Re: N900 battery duration
All, for what it is worth. battery charge duration is appearing as an issue with the Motorola Droid as well. I have started using a Droid and I notice that I need to charge it every night, and, if I fail to do that, then the next day it runs low on battery charge. Here is the url to some advice posted on the Verizon Wireless www site concerning battery duration related issues: http://search.vzw.com/?do=viewdocid=27662 Of course the Verizon Wireless Droid uses EVDO for Internet access which may be more or less power efficient than HSDPA as implemented on the N900, I am not sure. One think I like about the Droid is that there is a way for the user to be informed of WHAT is consuming the power on the device in each of 9 categories including Display Voice Calls Phone Idle Wi-Fi Cell Standby Browser Android System Bluetooth Android OS Best Regards, John Holmblad Acadia Secure Networks, LLC * * Alberto Garcia wrote: On Fri, Oct 16, 2009 at 10:48:27AM +0200, Andrea Grandi wrote: after some days using the N900 (with already lot of charge/discharge cicles) I'd like to compare my battery duration with other people. During the first days I used the N900 a lot, including browsing the web, instant messaging, e-mail, etc. The battery didn't last much more than a day, so I had to recharge it everyday at night. But then I wanted to compare its battery life with that of my old phone, so I started using it in a more conservative way: phone calls, text messages, calendar, alarm clock and occasionally as a media player. I also used the camera to take some pictures here and there and I connected to the Internet a few times to read my e-mail or check a couple of websites, but only for a 2-3 minutes each time. I charged the N900 on Wednesday night, and it's almost exhausted now, so it lasted for ~4 days, which is quite good, I think, to get an idea. Berto ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Any smartphone with a fair amount use is going to require charging everyday. If I'm really working it, I can kill mine in a couple hours. I have a charger in my car, at my desk at work and at home, so it's never that much of an issue. On Sat, Nov 28, 2009 at 3:03 PM, John B. Holmblad jholmb...@hotmail.comwrote: All, for what it is worth. battery charge duration is appearing as an issue with the Motorola Droid as well. I have started using a Droid and I notice that I need to charge it every night, and, if I fail to do that, then the next day it runs low on battery charge. Here is the url to some advice posted on the Verizon Wireless www site concerning battery duration related issues: http://search.vzw.com/?do=viewdocid=27662 Of course the Verizon Wireless Droid uses EVDO for Internet access which may be more or less power efficient than HSDPA as implemented on the N900, I am not sure. One think I like about the Droid is that there is a way for the user to be informed of WHAT is consuming the power on the device in each of 9 categories including Display Voice Calls Phone Idle Wi-Fi Cell Standby Browser Android System Bluetooth Android OS Best Regards, John Holmblad Acadia Secure Networks, LLC * * Alberto Garcia wrote: On Fri, Oct 16, 2009 at 10:48:27AM +0200, Andrea Grandi wrote: after some days using the N900 (with already lot of charge/discharge cicles) I'd like to compare my battery duration with other people. During the first days I used the N900 a lot, including browsing the web, instant messaging, e-mail, etc. The battery didn't last much more than a day, so I had to recharge it everyday at night. But then I wanted to compare its battery life with that of my old phone, so I started using it in a more conservative way: phone calls, text messages, calendar, alarm clock and occasionally as a media player. I also used the camera to take some pictures here and there and I connected to the Internet a few times to read my e-mail or check a couple of websites, but only for a 2-3 minutes each time. I charged the N900 on Wednesday night, and it's almost exhausted now, so it lasted for ~4 days, which is quite good, I think, to get an idea. Berto ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users -- In Vino Veritas http://rubbernecking.info ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Tuomas Kulve wrote: I repeated three runs with ffvorbis and got a bit over three hours more battery life with the headset connected compared to my earlier ffvorbis tests without the headset. And now I repeated the test runs with Flac. The battery lasted roughly 1.5 hours longer than while playing MP3. -- Tuomas ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
On Wed, Nov 25, 2009 at 6:54 PM, Tuomas Kulve tuo...@kulve.fi wrote: Tuomas Kulve wrote: I repeated three runs with ffvorbis and got a bit over three hours more battery life with the headset connected compared to my earlier ffvorbis tests without the headset. And now I repeated the test runs with Flac. The battery lasted roughly 1.5 hours longer than while playing MP3. Xiph's FLAC decoder? -- Felipe Contreras ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Felipe Contreras wrote: On Wed, Nov 25, 2009 at 6:54 PM, Tuomas Kulve tuo...@kulve.fi wrote: Tuomas Kulve wrote: I repeated three runs with ffvorbis and got a bit over three hours more battery life with the headset connected compared to my earlier ffvorbis tests without the headset. And now I repeated the test runs with Flac. The battery lasted roughly 1.5 hours longer than while playing MP3. Xiph's FLAC decoder? Yes. -- Tuomas ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
On Tue, 10 Nov 2009, Tuomas Kulve wrote: Aniello Del Sorbo wrote: An N8x0 in offline mode (idle) consumes much less energy in a night than its minutes-long start up. Does somebody have any data on this? Here is some data: http://talk.maemo.org/showpost.php?p=361648postcount=23 Abstract: The often repeated claim that a reboot cycle wastes a lot of battery is incorrect. -- Matan. ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
2009/11/10 Tuomas Kulve tuo...@kulve.fi: Aniello Del Sorbo wrote: An N8x0 in offline mode (idle) consumes much less energy in a night than its minutes-long start up. Does somebody have any data on this? I don't, but I do remember an e-mail or thread somewhere long ago about this. I was reporting it by memory. -- anidel Sent from London, Eng, United Kingdom ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
2009/11/11 Matan Ziv-Av ma...@svgalib.org: On Tue, 10 Nov 2009, Tuomas Kulve wrote: Aniello Del Sorbo wrote: An N8x0 in offline mode (idle) consumes much less energy in a night than its minutes-long start up. Does somebody have any data on this? Here is some data: http://talk.maemo.org/showpost.php?p=361648postcount=23 Abstract: The often repeated claim that a reboot cycle wastes a lot of battery is incorrect. To have a fair comparison you should now check the battery-status before going to sleep and when waking up again so to compare how much battery went down in one night. Interesting results nonetheless. Thanks! -- anidel ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Matan Ziv-Av wrote: Here is some data: http://talk.maemo.org/showpost.php?p=361648postcount=23 Abstract: The often repeated claim that a reboot cycle wastes a lot of battery is incorrect. Hmm, you proved you can drain battery in 44 reboot cycles in 2 and half hours. To me it says reboot wastes a lot of battery :-) You can play video or surf the web longer than 2.5 hours. In fact there is not many things that could drain battery faster than reboots, is it? I have posted my findings with one spare N810 to that thread. I got like 30 days with N810 sitting completely idle. That would roughly mean one reboot is 16 hours of standby (with no wi-fi). Frantisek ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
2009/11/11 Frantisek Dufka duf...@seznam.cz: Matan Ziv-Av wrote: Here is some data: http://talk.maemo.org/showpost.php?p=361648postcount=23 Abstract: The often repeated claim that a reboot cycle wastes a lot of battery is incorrect. Hmm, you proved you can drain battery in 44 reboot cycles in 2 and half hours. To me it says reboot wastes a lot of battery :-) You can play video or surf the web longer than 2.5 hours. In fact there is not many things that could drain battery faster than reboots, is it? I have posted my findings with one spare N810 to that thread. I got like 30 days with N810 sitting completely idle. That would roughly mean one reboot is 16 hours of standby (with no wi-fi). Frantisek The issue was (abstract) if a reboot would consume more energy than a night-long idle. If you swap reboots with nights and assume night consumption = reboot consumption then you should be able to squeeze up to 44 nights out of a charged battery. -- anidel Sent from London, Eng, United Kingdom ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Frantisek Dufka wrote: I have posted my findings with one spare N810 to that thread. I got like 30 days with N810 sitting completely idle. That would roughly mean one reboot is 16 hours of standby (with no wi-fi). 30 days. That's quite nice. Any idea why n900 gets only to 4 days then? What makes the difference so big? I didn't run it on offline mode though. -- Tuomas ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Aniello Del Sorbo wrote: The issue was (abstract) if a reboot would consume more energy than a night-long idle. As I said - by Matan's equation in the forum post, one reboot is 16 hours of standby. So at least with wi-fi off, keeping it idle looks better. I was thinking about testing with wi-fi but my router cannot keep connection for so long so it would be a bit mor complex than just keeping it in the drawer. you should be able to squeeze up to 44 nights out of a charged battery. I guess with 30 full days I could do 60 nights ;-) But I somehow need to keep it powered off during daytime. Maybe I could shut it down in the morning and boot it in the evening to save power ;-) Frantisek ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
2009/11/11 Frantisek Dufka duf...@seznam.cz: Aniello Del Sorbo wrote: The issue was (abstract) if a reboot would consume more energy than a night-long idle. As I said - by Matan's equation in the forum post, one reboot is 16 hours of standby. So at least with wi-fi off, keeping it idle looks better. I was thinking about testing with wi-fi but my router cannot keep connection for so long so it would be a bit mor complex than just keeping it in the drawer. you should be able to squeeze up to 44 nights out of a charged battery. I guess with 30 full days I could do 60 nights ;-) But I somehow need to keep it powered off during daytime. Maybe I could shut it down in the morning and boot it in the evening to save power ;-) Frantisek Yeah, that's true. So far it looks like a reboot is mostly equal to a night-long idle consumption. To me at least. 44 reboots and 60 nights, considering a difference in how old a battery is, could very well be the case. I also take a bit into account battery heat dissipation (in the case of 44 consecutive reboot). So, I would guess that leaving it on in offline is better than turning it off and than on during the night (it's faster to switch between offline/online than actually rebooting). But rebooting ensures and memory leak gets a workaround. oh well.. -- anidel Sent from London, Eng, United Kingdom ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
On Wed, 11 Nov 2009, Frantisek Dufka wrote: Matan Ziv-Av wrote: Here is some data: http://talk.maemo.org/showpost.php?p=361648postcount=23 Abstract: The often repeated claim that a reboot cycle wastes a lot of battery is incorrect. Hmm, you proved you can drain battery in 44 reboot cycles in 2 and half hours. To me it says reboot wastes a lot of battery :-) You can play video or surf the web longer than 2.5 hours. In fact there is not many things that could drain battery faster than reboots, is it? I cannot play video for 2.5 hours on my almost 2 years old N810. I can hardly read an ebook for this long. In addition I have dual boot, including 30s delay. During this delay screen is on maximum brightness, and I don't know which power saving features are enabled, so without this delay, a few more reboots might be possible. I have posted my findings with one spare N810 to that thread. I got like 30 days with N810 sitting completely idle. That would roughly mean one reboot is 16 hours of standby (with no wi-fi). This must be very atypical. In similar tests on a new N800 I never even managed two weeks (in offline mode). The main reason I suggest turning off when the device is not going to be used for long periods (such as a night sleep) is the non-slim chance that something might cause break power saving (metalayer-crawler, router incompatible with power saving, forgetting to disconnect bluetooth, etc.) and you wake up to see a dead device. -- Matan. ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Matan Ziv-Av wrote: I cannot play video for 2.5 hours on my almost 2 years old N810. I can hardly read an ebook for this long. In addition I have dual boot, including 30s delay. During this delay screen is on maximum brightness, and I don't know which power saving features are enabled, so without this delay, a few more reboots might be possible. Good points. I have posted my findings with one spare N810 to that thread. I got like 30 days with N810 sitting completely idle. That would roughly mean one reboot is 16 hours of standby (with no wi-fi). This must be very atypical. In similar tests on a new N800 I never even managed two weeks (in offline mode). N800 is worse, see Igor's post here http://lists.maemo.org/pipermail/maemo-users/2008-February/009409.html My numbers is from my own measurements I did later. The extra N810 was new at that time. The main reason I suggest turning off when the device is not going to be used for long periods (such as a night sleep) is the non-slim chance that something might cause break power saving (metalayer-crawler, router incompatible with power saving, forgetting to disconnect bluetooth, etc.) and you wake up to see a dead device. Yes, definitely. I was trying to solve this by send SIGSTOP to offending processes (browser in particular) when keyboard and screen is locked and it somehow worked. It is relatively easy to do it as powerlaunch script. With nice UI that would allow to picks up offenders by monitoring CPU usage this could be useful tool for poor man's suspend. Basically by locking screen and keys every process except few critical onces could be stopped and later resumed (SIGSTOP,SIGCONT) when device is unlocked. Would not solve keeping audio open etc. Frantisek ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
On Wed, Nov 11, 2009 at 5:58 AM, Frantisek Dufka duf...@seznam.cz wrote: Aniello Del Sorbo wrote: The issue was (abstract) if a reboot would consume more energy than a night-long idle. As I said - by Matan's equation in the forum post, one reboot is 16 hours of standby. So at least with wi-fi off, keeping it idle looks better. I was thinking about testing with wi-fi but my router cannot keep connection for so long so it would be a bit mor complex than just keeping it in the drawer. you should be able to squeeze up to 44 nights out of a charged battery. I guess with 30 full days I could do 60 nights ;-) But I somehow need to keep it powered off during daytime. Maybe I could shut it down in the morning and boot it in the evening to save power ;-) Frantisek The absurdity knows know bounds. You're saying a battery will last longer with a device turned on in sleep mode than it is even capable keeping a charge sitting all by itself out of the device on a counter. Give me a break. We're talking real-world usage here. If you actually *use* the device, rather than just letting it sit idle doing nothing (in which case why do you even own the thing?!?!?!), you're not going to get anything like that kind of battery duration. I've tried putting my N800 in offline sleep mode at night, and never got more than 3 days out of it, even with very little usage during the day. If I turn it off when I'm not using it and turn it on and back off 2-4 times a day, I can get 1 to 2 weeks out of it. Even if the N810s are better, there are too many variables to defend such outrageous claims, especially if you (again) actually use the thing and install any apps that run in the background. Let's leave theory to the theorists and take a dose of reality, okay? Mark ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Hi, ext Tuomas Kulve wrote: Tuomas Kulve wrote: igor.sto...@nokia.com wrote: There is a bug in the cellmo SW related to absence of SIM: the current is higher when the SIM is not in. So in real life use case (i assume people who will buy it will actually use it as a phone) the use time will be longer. I guess I need to do more testing then :) Although I'm not sure how to accomplish that as I need my SIM for the daily use.. The previous test was without a SIM card. The device was very idle and run for 93.75 hours (with a guessed few hour error marginal). After charging the battery I inserted the SIM card, rebooted and started a new test. Why reboot? I would expect most people just to charge without shutting down the device. (You may remember that e.g. N8x0 use less battery if it's put to offline-mode instead of being shut down for the night.) I received two calls (hung up immediately), I received two SMS messages and sent one, and the notifier led was blinking for 45 mins at one point. Otherwise the device was idle and run for 93.62 hours. So pretty close to the test without a SIM card. I have a small shell script running there that writes a log every 60 seconds. After writing the log it runs the sync command and starts the loop again. I'm assuming it doesn't affect the total run time much in an otherwise idle device. - Eero ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
On Tue, 10 Nov 2009 15:56:13 +0200 Eero Tamminen eero.tammi...@nokia.com wrote: I would expect most people just to charge without shutting down the device. (You may remember that e.g. N8x0 use less battery if it's put to offline-mode instead of being shut down for the night.) heh? why is that? ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
2009/11/10 Dieter Plaetinck die...@plaetinck.be: On Tue, 10 Nov 2009 15:56:13 +0200 Eero Tamminen eero.tammi...@nokia.com wrote: I would expect most people just to charge without shutting down the device. (You may remember that e.g. N8x0 use less battery if it's put to offline-mode instead of being shut down for the night.) heh? why is that? Well in the case of the N8x0 when booting up the screen brightness was up to its maximum. When booting up all the tablets chips and fishes uses maximum energy until the PM kicks in and takes control of everything. This consumes A LOT of energy. An N8x0 in offline mode (idle) consumes much less energy in a night than its minutes-long start up. -- anidel ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Eero Tamminen wrote: The previous test was without a SIM card. The device was very idle and run for 93.75 hours (with a guessed few hour error marginal). After charging the battery I inserted the SIM card, rebooted and started a new test. Why reboot? So that I know the start scenario is the same. Not rebooting and doing several tests in a row easily leads to increased memory consumption, dying processes and weird behaviour. I would expect most people just to charge without shutting down the device. Of course. I'm not booting the device in normal usage. (You may remember that e.g. N8x0 use less battery if it's put to offline-mode instead of being shut down for the night.) How's that possible? Offline mode shuts down the wireless stuff but still runs the cpu. And, afaik, shutting down the device shuts down the cpu etc. as well (not sure what happens if you have alarms there). Do you happen to have a pointer to some old discussions or wherever this has been explained? -- Tuomas ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Aniello Del Sorbo wrote: An N8x0 in offline mode (idle) consumes much less energy in a night than its minutes-long start up. Does somebody have any data on this? -- Tuomas ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
On Tue, Nov 10, 2009 at 8:22 AM, Tuomas Kulve tuo...@kulve.fi wrote: Eero Tamminen wrote: (You may remember that e.g. N8x0 use less battery if it's put to offline-mode instead of being shut down for the night.) How's that possible? Offline mode shuts down the wireless stuff but still runs the cpu. And, afaik, shutting down the device shuts down the cpu etc. as well (not sure what happens if you have alarms there). Do you happen to have a pointer to some old discussions or wherever this has been explained? -- Tuomas This is just one of many myths regarding the tablets. What is true is that if you turn your tablet off and on *many* times during a day, you will experience shorter battery duration than if you just put it to sleep. The reasons are as stated: when starting up and shutting down you are running the machine at full blast for a significant length of time, which rarely happens otherwise. However, if you only turn it on once or twice a day, your battery will last many more days if you shut it down than if you leave it on, even at maximum power savings. Mark ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
igor.sto...@nokia.com wrote: Tuomas Kulve wrote: igor.sto...@nokia.com wrote: Running the test with a headset plugged in would get rid of the offset. Offset? Is that something that affects the MP3 in a different manner than Ogg? It should be the same, but since you are interested in the power consumption of the decoding activity - if i understood correctly - then you get an unknown term, which can also have 2nd order effects due to the different timing and choices that both cpuidle and cpufreq could make. iow, if you have time, it might be interesting to run the test again with an headset. I repeated three runs with ffvorbis and got a bit over three hours more battery life with the headset connected compared to my earlier ffvorbis tests without the headset. -- Tuomas ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
I wrote a blog post about my ogg vs. mp3 measurements: http://tuomas.kulve.fi/blog/2009/11/07/n900-battery-duration-ogg-vs-mp3/ -- Tuomas ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
On Saturday 07 November 2009 11:55:52 Tuomas Kulve wrote: I wrote a blog post about my ogg vs. mp3 measurements: http://tuomas.kulve.fi/blog/2009/11/07/n900-battery-duration-ogg-vs-mp3/ Wow, awseome! thanks for that very interessting blog entry. Regards, Max ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
RE: N900 battery duration
hi, From: maemo-users-boun...@maemo.org [maemo-users-boun...@maemo.org] On Behalf Of ext Tuomas Kulve [tuo...@kulve.fi] Sent: 07 November 2009 12:55 To: maemo-users@maemo.org Subject: Re: N900 battery duration I. wrote a blog post about my ogg vs. mp3 measurements: http://tuomas.kulve.fi/blog/2009/11/07/n900-battery-duration-ogg-vs-mp3/ Sorry to again make these comments after you have run the measurement. But in your cases you are seeing an offset due to the speaker protection algorythms. Running the test with a headset plugged in would get rid of the offset. igor ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
igor.sto...@nokia.com wrote: Sorry to again make these comments after you have run the measurement. But in your cases you are seeing an offset due to the speaker protection algorythms. Running the test with a headset plugged in would get rid of the offset. Offset? Is that something that affects the MP3 in a different manner than Ogg? -- Tuomas ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
RE: N900 battery duration
Tuomas Kulve wrote: igor.sto...@nokia.com wrote: Running the test with a headset plugged in would get rid of the offset. Offset? Is that something that affects the MP3 in a different manner than Ogg? It should be the same, but since you are interested in the power consumption of the decoding activity - if i understood correctly - then you get an unknown term, which can also have 2nd order effects due to the different timing and choices that both cpuidle and cpufreq could make. iow, if you have time, it might be interesting to run the test again with an headset. igpr ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
igor.sto...@nokia.com wrote: It should be the same, but since you are interested in the power consumption of the decoding activity - if i understood correctly - then you get an unknown term, which can also have 2nd order effects due to the different timing and choices that both cpuidle and cpufreq could make. iow, if you have time, it might be interesting to run the test again with an headset. I was more interested to know the difference between the mp3 and ogg. But I'm also interested to know the difference between the headphones connected and not connected. -- Tuomas ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Hello, igor.sto...@nokia.com a écrit : Tuomas Kulve wrote: igor.sto...@nokia.com wrote: Running the test with a headset plugged in would get rid of the offset. Offset? Is that something that affects the MP3 in a different manner than Ogg? It should be the same, but since you are interested in the power consumption of the decoding activity - if i understood correctly - then you get an unknown term, which can also have 2nd order effects due to the different timing and choices that both cpuidle and cpufreq could make. But how the speaker protection algorythms can make a difference between ffvorbis and libvorbis since the output should be exactly the same ? Jean-Christian ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
RE: N900 battery duration
Tuomas Kulve wrote: I was more interested to know the difference between the mp3 and ogg. Then i think it's more appropriate to do it with headset. Unless yourl typical usecase is really to listen from the speakers - in which case i'd rather recommend to use the fm transmitter and larger speakers from a radio. igor ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
RE: N900 battery duration
Jean-Christian de Rivaz wrote: But how the speaker protection algorythms can make a difference between ffvorbis and libvorbis since the output should be exactly the same ? both cpuidle and cpufreq target the next state based on activity and idleness thresholds. if the algos add just enough to cross any limit that otherwise would not be passed, they can have quite an influence. especially if the performance of the 2 decoders is isgnificantly different. Think about a thrshold-based tax system, if you want a (loose) analogy. igor ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
I just managed to keep my n900 online for about 92 hours. how? - no wifi, 3g, edge or bluetooth - a few short calls. not more then 10 mins in total - about 5 hours of media player + FM transmitter (!) usage (playing mp3 files) - I shut it down every evening and started it each morning, writing down the exact time. so the 92 hours is actually spread over 6 days. it's no suprise that turning off wifi/edge/3G/bluetooth is good for battery saving, but i found it great to learn that the FM transmitter doesn't need much juice. Dieter ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
RE: N900 battery duration
From: maemo-users-boun...@maemo.org [maemo-users-boun...@maemo.org] On Behalf Of ext Tuomas Kulve [tuo...@kulve.fi] Sent: 30 October 2009 07:41 To: maemo-users@maemo.org Subject: Re: N900 battery duration Tuomas Kulve wrote: So pretty close to the test without a SIM card. Even if the duration might be the same, the SIM card actually triggers network activity. Depending on the operator having firewalls or not, this also makes the phone spend more energy when stuff like port scans are coming. igor ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
igor.sto...@nokia.com wrote: Even if the duration might be the same, the SIM card actually triggers network activity. Depending on the operator having firewalls or not, this also makes the phone spend more energy when stuff like port scans are coming. I didn't have data connection open, so no IP network traffic was transferred. -- Tuomas ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Tuomas Kulve wrote: igor.sto...@nokia.com wrote: There is a bug in the cellmo SW related to absence of SIM: the current is higher when the SIM is not in. So in real life use case (i assume people who will buy it will actually use it as a phone) the use time will be longer. I guess I need to do more testing then :) Although I'm not sure how to accomplish that as I need my SIM for the daily use.. The previous test was without a SIM card. The device was very idle and run for 93.75 hours (with a guessed few hour error marginal). After charging the battery I inserted the SIM card, rebooted and started a new test. I received two calls (hung up immediately), I received two SMS messages and sent one, and the notifier led was blinking for 45 mins at one point. Otherwise the device was idle and run for 93.62 hours. So pretty close to the test without a SIM card. I have a small shell script running there that writes a log every 60 seconds. After writing the log it runs the sync command and starts the loop again. I'm assuming it doesn't affect the total run time much in an otherwise idle device. -- Tuomas ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Andrew Flegg wrote: On Sat, Oct 17, 2009 at 12:34, Tuomas Kulve tuo...@kulve.fi wrote: This is now run on a 41-10 release without SIM, without WLAN, without charger, with only ogg-support and sshd installed (default widgets on the desktop), and display blanked via the lock button: C4 | 99.5% | 2297.0ms | Bet it'll last for *ges* :-) 93.75 hours. I'm not going to repeat that test but based on my other tests, I would guess that it wouldn't fluctuate more than a few hours. -- Tuomas ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
RE: N900 battery duration
There is a bug in the cellmo SW related to absence of SIM: the current is higher when the SIM is not in. So in real life use case (i assume people who will buy it will actually use it as a phone) the use time will be longer. I would also assume that the sshd makes a difference. I have no data to back it, but i'm quite sure it has not been profiled for mobile usage. igor From: maemo-users-boun...@maemo.org [maemo-users-boun...@maemo.org] On Behalf Of ext Tuomas Kulve [tuo...@kulve.fi] Sent: 25 October 2009 13:45 To: Andrew Flegg Cc: maemo users Subject: Re: N900 battery duration Andrew Flegg wrote: On Sat, Oct 17, 2009 at 12:34, Tuomas Kulve tuo...@kulve.fi wrote: This is now run on a 41-10 release without SIM, without WLAN, without charger, with only ogg-support and sshd installed (default widgets on the desktop), and display blanked via the lock button: C4 | 99.5% | 2297.0ms | Bet it'll last for *ges* :-) 93.75 hours. I'm not going to repeat that test but based on my other tests, I would guess that it wouldn't fluctuate more than a few hours. -- Tuomas ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
igor.sto...@nokia.com wrote: There is a bug in the cellmo SW related to absence of SIM: the current is higher when the SIM is not in. So in real life use case (i assume people who will buy it will actually use it as a phone) the use time will be longer. I guess I need to do more testing then :) Although I'm not sure how to accomplish that as I need my SIM for the daily use.. I would also assume that the sshd makes a difference. I have no data to back it, but i'm quite sure it has not been profiled for mobile usage. I assumed sshd wouldn't do anything if there are no connections to it. -- Tuomas ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
On Fri, Oct 16, 2009 at 10:48:27AM +0200, Andrea Grandi wrote: after some days using the N900 (with already lot of charge/discharge cicles) I'd like to compare my battery duration with other people. During the first days I used the N900 a lot, including browsing the web, instant messaging, e-mail, etc. The battery didn't last much more than a day, so I had to recharge it everyday at night. But then I wanted to compare its battery life with that of my old phone, so I started using it in a more conservative way: phone calls, text messages, calendar, alarm clock and occasionally as a media player. I also used the camera to take some pictures here and there and I connected to the Internet a few times to read my e-mail or check a couple of websites, but only for a 2-3 minutes each time. I charged the N900 on Wednesday night, and it's almost exhausted now, so it lasted for ~4 days, which is quite good, I think, to get an idea. Berto ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Hi, ext Andrea Grandi wrote: 2009/10/17 Felipe Contreras felipe.contre...@gmail.com: On Fri, Oct 16, 2009 at 10:18 PM, Andrea Grandi a.gra...@gmail.com wrote: 2009/10/16 Andrew Flegg and...@bleb.org: What widgets do you have on the desktop? RSS? Facebook? Foreca? I've Facebook, Calendar, Forecast and two shortcut to start Phone and Contacts. Try removing the third party ones: facebook and forecast. This test was done with these situation: connected to home wifi, facebook ON, forecast ON, pressing sometimes the main menu to keep the light always ON --- http://pastebin.ca/1625155 This other test is the same as previous but without facebook and forecast: http://pastebin.ca/1625163 Do you have RD-mode or RD-flags enabled? Are you charging your device until the led shows green? - Eero ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Hi, 2009/10/20 Eero Tamminen eero.tammi...@nokia.com: Do you have RD-mode or RD-flags enabled? how can I know it? I just installed the utility to become root (sudo gainroot) Are you charging your device until the led shows green? yes -- Andrea Grandi email: a.grandi [AT] gmail [DOT] com website: http://www.andreagrandi.it PGP Key: http://www.andreagrandi.it/pgp_key.asc ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Hi, ext Andrea Grandi wrote: Do you have RD-mode or RD-flags enabled? how can I know it? I just installed the utility to become root (sudo gainroot) cal-tool --get-rd-mode --get-rd-flags - Eero ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
2009/10/20 Andrea Grandi a.gra...@gmail.com: Hi, 2009/10/20 Eero Tamminen eero.tammi...@nokia.com: Do you have RD-mode or RD-flags enabled? how can I know it? I just installed the utility to become root (sudo gainroot) You know it, because you've got to enable it via flasher :) So if you don't know, probably you didn't enable it :P anidel ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Hi, 2009/10/20 Eero Tamminen eero.tammi...@nokia.com: Hi, ext Andrea Grandi wrote: Do you have RD-mode or RD-flags enabled? how can I know it? I just installed the utility to become root (sudo gainroot) cal-tool --get-rd-mode --get-rd-flags it replies: disabled by the way: I've seen that connecting to Simyo UMTS/HSDPA (which is ALWAYS in roaming, since it's a virtual operator and it uses Orange network) it takes a lot of battery. If I keep connected to my home's wifi, battery last much much more. I'll be able to test with Italian 3Hg carrier once I'll come back in Italy... but this will be for Christmas holiday :\ -- Andrea Grandi email: a.grandi [AT] gmail [DOT] com website: http://www.andreagrandi.it PGP Key: http://www.andreagrandi.it/pgp_key.asc ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Hi, ext Andrea Grandi wrote: Do you have RD-mode or RD-flags enabled? how can I know it? I just installed the utility to become root (sudo gainroot) cal-tool --get-rd-mode --get-rd-flags it replies: disabled by the way: I've seen that connecting to Simyo UMTS/HSDPA (which is ALWAYS in roaming, since it's a virtual operator and it uses Orange network) it takes a lot of battery. If I keep connected to my home's wifi, battery last much much more. I'll be able to test with Italian 3Hg carrier once I'll come back in Italy... but this will be for Christmas holiday :\ Phone side needs much longer idle network traffic periods than WLAN, to be able to power down. It's best if you can track the network traffic to find out whether something causes it to be always up (some process in the device[1], traffic in the phone network). - Eero [1] This could help, the Debian package builds fine for the device: http://packages.debian.org/squeeze/nethogs ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Andrea Grandi wrote: Anyway, here is the result of powertop execution on my N900: http://pastebin.ca/1624111 In the PID activity list there are quite many skyhost prosesses, some of which are quite active. Those may also keep the WLAN busy as the wl12xx process is very active as well. Skyhost seems to be a part of skype. Try disabling the Skype login and see what the powertop says after that? -- Tuomas ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
On Fri, Oct 16, 2009 at 10:18 PM, Andrea Grandi a.gra...@gmail.com wrote: Hi, 2009/10/16 Andrew Flegg and...@bleb.org: What widgets do you have on the desktop? RSS? Facebook? Foreca? I've Facebook, Calendar, Forecast and two shortcut to start Phone and Contacts. Try removing the third party ones: facebook and forecast. -- Felipe Contreras ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Hi, 2009/10/17 Felipe Contreras felipe.contre...@gmail.com: On Fri, Oct 16, 2009 at 10:18 PM, Andrea Grandi a.gra...@gmail.com wrote: Hi, 2009/10/16 Andrew Flegg and...@bleb.org: What widgets do you have on the desktop? RSS? Facebook? Foreca? I've Facebook, Calendar, Forecast and two shortcut to start Phone and Contacts. Try removing the third party ones: facebook and forecast. This test was done with these situation: connected to home wifi, facebook ON, forecast ON, pressing sometimes the main menu to keep the light always ON --- http://pastebin.ca/1625155 This other test is the same as previous but without facebook and forecast: http://pastebin.ca/1625163 -- Andrea Grandi email: a.grandi [AT] gmail [DOT] com website: http://www.andreagrandi.it PGP Key: http://www.andreagrandi.it/pgp_key.asc ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
On Fri, 16 Oct 2009 10:48:27 +0200 Andrea Grandi a.gra...@gmail.com wrote: Hi all, after some days using the N900 (with already lot of charge/discharge cicles) I'd like to compare my battery duration with other people. At least for me, battery doesn't last so much... for example one day I charged it at 10:30 and it lasted only until 18:30 without using GPS, fotocamera, wifi, bluetooth, ecc just 20 minutes connected in UMTS/HSDPA and the rest of the time keeping it in my pocket. I don't have any particular application installed... I only use one virtual desktop and the widget are: calendar, facebook, forecast. Nothing more. Another day the battery only lasted 6 hours... browsing a little more (30 minutes in total). Anyone else is experiencing the same problem? p.s: today I'm not going to use it to connect to internet, just using it as media player (I'm in the university library) listening it with my headset. I'm playing mp3 songs since 1 hour and the battery is still displayed as full. Not bad. for me it lasts about 30hours. i don't use 3g/edge/.. just cellular and some wifi. 2 vdesktops, same widgets as you but no facebook. Dieter ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Hallo! Around 2, possible 2 1/2 days, with device beeing around 12 hours per day in Wifi. No special application running besides EMail program. A higher number of EMail receives with partial soundplayingand vibrating. Active SIM card but no traffic. -- Gruß... Tim ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
On Fri, Oct 16, 2009 at 10:48:27AM +0200, Andrea Grandi wrote: after some days using the N900 (with already lot of charge/discharge cicles) I'd like to compare my battery duration with other people. At least for me, battery doesn't last so much... for example one day I charged it at 10:30 and it lasted only until 18:30 without using GPS, fotocamera, wifi, bluetooth, ecc just 20 minutes connected in UMTS/HSDPA and the rest of the time keeping it in my pocket. That sounds a bit low. Not that I've seen longer life on mine, but I use mine a lot. A day or two ago it survived from 8 AM to 2 PM while online using 3G (and later WiFi), with almost constant web browsing, email checking, note taking and GPS usage. I started charging it before I saw the 'low battery' warning. I don't have any particular application installed... I only use one virtual desktop and the widget are: calendar, facebook, forecast. Nothing more. Have you tried disabling facebook and forecast? Have you tried running powertop in an xterm and looking at the output? Another day the battery only lasted 6 hours... browsing a little more (30 minutes in total). Anyone else is experiencing the same problem? p.s: today I'm not going to use it to connect to internet, just using it as media player (I'm in the university library) listening it with my headset. I'm playing mp3 songs since 1 hour and the battery is still displayed as full. Not bad. Marius Gedminas -- (mental note: stop installing red hat. everytime i do so, it takes ages to fix my system again.) -- from the sig of Martin H�gman signature.asc Description: Digital signature ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Hi, 2009/10/16 Marius Gedminas mar...@pov.lt: Not that I've seen longer life on mine, but I use mine a lot. A day or two ago it survived from 8 AM to 2 PM while online using 3G (and later WiFi), with almost constant web browsing, email checking, note taking and GPS usage. I started charging it before I saw the 'low battery' warning. I wish I had the same duration :( Have you tried disabling facebook and forecast? I can try, but... today, having them enabled, I'm listening to mp3 songs, only using media player and the battery is still full charge. Have you tried running powertop in an xterm and looking at the output? command not found... do I have to install it? -- Andrea Grandi email: a.grandi [AT] gmail [DOT] com website: http://www.andreagrandi.it PGP Key: http://www.andreagrandi.it/pgp_key.asc ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
On Fri, Oct 16, 2009 at 10:02, Andrea Grandi a.gra...@gmail.com wrote: Have you tried running powertop in an xterm and looking at the output? command not found... do I have to install it? No, you have to be root. -- Andrew Flegg -- mailto:and...@bleb.org | http://www.bleb.org/ ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Hi, 2009/10/16 Andrew Flegg and...@bleb.org: On Fri, Oct 16, 2009 at 10:02, Andrea Grandi a.gra...@gmail.com wrote: Have you tried running powertop in an xterm and looking at the output? command not found... do I have to install it? No, you have to be root. this is what I get: # powertop Powertop 1.13.3 status: Unknown job: pmtrackerdaemon Mounting debugfs...FAILED it doesn't sound good :P -- Andrea Grandi email: a.grandi [AT] gmail [DOT] com website: http://www.andreagrandi.it PGP Key: http://www.andreagrandi.it/pgp_key.asc ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Hi, Andrea Grandi wrote: At least for me, battery doesn't last so much... for example one day I charged it at 10:30 and it lasted only until 18:30 without using GPS, fotocamera, wifi, bluetooth, ecc just 20 minutes connected in UMTS/HSDPA and the rest of the time keeping it in my pocket. My experience is that it lasts fine from plugging out the charger until I get home in the evening around 20h or 21h. If I don't plug it in, I tend to be out of battery around midday the following day. That said, there have been days when it hasn't lasted a day, especially with wifi on a lot, and when I've made several phone calls. I had a problem with syncing my contact list (which I'll be reporting as soon as I get time) which caused me issues during the week, so for the time being I've moved back to my old phone for cellphone calls, but I move to the N900 as often as I can in the office. I installed quite a few apps from extras and etras-testing, but nothing which is on all the time, except sync for exchange - and to reduce battery usage there I've reduced sync frequency to once every 4 hours there. Web browsing seems to be the major issue, especially on JS or Flash heavy sites. Cheers, Dave. -- maemo.org docsmaster Email: dne...@maemo.org Jabber: bo...@jabber.org ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
On Friday 16 October 2009 10:48:27 Andrea Grandi wrote: after some days using the N900 (with already lot of charge/discharge cicles) I'd like to compare my battery duration with other people. I get a little over a day, so if I forget to charge it at night, it's game over somewhere early next day (have a spare battery or a microUSB source on the ready if you're as forgetful as I am). Intensive web and OpenGL sucks it dry real quick, but haven't yet measured it for exact numbers. I also suspect having 5 IM accounts with ~700 contacts doesn't help either. Have not tried a video marathon (yet). Wifi always on, GPS off, and I don't use GSM/3G data at all (actually disabled 3G in the data options in hope of better battery times). Completely different battery use-case than the N8x0, much more like a phone (whereas my N810 used to last me 3-4 days). PS. Somebody also made it possible to charge when battery completely dry (not always possible on previous tablets :( ), thanks for that :) ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Hi Andrea, I've been using the N900 since last Saturday as my main mobile phone and messaging device and for some light browsing and blog reading. I use the always on Internet connection option and while I'm in the office the N900 frequently switches between Wifi and Edge (no 3G here in the middle of nowhere). I also installed quite a few apps and I use all the virtual desktops. So far the battery has usually lasted between a full day and one and a half days. Compared to what I've seen some of my friends getting out of their iPhone batteries and what I've read in the Palm Pre reviews - since the 3GS and the Pre use the same CPU - I think getting about thirty hours out of the battery is not too bad. Much less with moderate usage looks like a problem with the battery to me. Cheers, Kai Am Freitag, den 16.10.2009, 10:48 +0200 schrieb Andrea Grandi: Hi all, after some days using the N900 (with already lot of charge/discharge cicles) I'd like to compare my battery duration with other people. At least for me, battery doesn't last so much... for example one day I charged it at 10:30 and it lasted only until 18:30 without using GPS, fotocamera, wifi, bluetooth, ecc just 20 minutes connected in UMTS/HSDPA and the rest of the time keeping it in my pocket. I don't have any particular application installed... I only use one virtual desktop and the widget are: calendar, facebook, forecast. Nothing more. Another day the battery only lasted 6 hours... browsing a little more (30 minutes in total). Anyone else is experiencing the same problem? p.s: today I'm not going to use it to connect to internet, just using it as media player (I'm in the university library) listening it with my headset. I'm playing mp3 songs since 1 hour and the battery is still displayed as full. Not bad. ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
On Fri, Oct 16, 2009 at 19:56, Kai Thomsen thoms...@t-online.de wrote: So far the battery has usually lasted between a full day and one and a half days. What widgets do you have on the desktop? RSS? Facebook? Foreca? Thanks in advance, Andrew -- Andrew Flegg -- mailto:and...@bleb.org | http://www.bleb.org/ ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Hi, 2009/10/16 Andrew Flegg and...@bleb.org: What widgets do you have on the desktop? RSS? Facebook? Foreca? I've Facebook, Calendar, Forecast and two shortcut to start Phone and Contacts. p.s: about services, when I go online I register to: Skype, SIP number and Gtalk. Thanks in advance, thanks to you for the help :) -- Andrea Grandi email: a.grandi [AT] gmail [DOT] com website: http://www.andreagrandi.it PGP Key: http://www.andreagrandi.it/pgp_key.asc ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
I have the calendar and Facebook widgets on the desktop. And since the last reboot (yeah, there are still some stability issues ;-)) two days ago the Email, Messaging, RSS, Phone, and Internet apps are open. Cheers, Kai Am Freitag, den 16.10.2009, 20:15 +0100 schrieb Andrew Flegg: On Fri, Oct 16, 2009 at 19:56, Kai Thomsen thoms...@t-online.de wrote: So far the battery has usually lasted between a full day and one and a half days. What widgets do you have on the desktop? RSS? Facebook? Foreca? Thanks in advance, Andrew ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Hmm, Skype and apps like that might suck quite a bit of battery, depending on how chatty they might become in their idle states. Knowing a bit about Skype from monitoring a large company network, especially when it does not get a connection or an unreliable connection it tries to connect to the next Supernode very often, at least once a minute. Wireshark might help you to find out how chatty your N900 is... If I have some time over the weekend, I could run some tests with Wireshark and Skype/Foreca/Facebook and whatever else is usually running on my N900 to see how often these apps actually send traffic in their idle states. Cheers, Kai Am Freitag, den 16.10.2009, 21:18 +0200 schrieb Andrea Grandi: Hi, 2009/10/16 Andrew Flegg and...@bleb.org: What widgets do you have on the desktop? RSS? Facebook? Foreca? I've Facebook, Calendar, Forecast and two shortcut to start Phone and Contacts. p.s: about services, when I go online I register to: Skype, SIP number and Gtalk. Thanks in advance, thanks to you for the help :) ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Hi, 2009/10/16 Kai Thomsen thoms...@t-online.de: Hmm, Skype and apps like that might suck quite a bit of battery, depending on how chatty they might become in their idle states. Knowing a bit about Skype from monitoring a large company network, especially when it does not get a connection or an unreliable connection it tries to connect to the next Supernode very often, at least once a minute. Wireshark might help you to find out how chatty your N900 is... If I have some time over the weekend, I could run some tests with Wireshark and Skype/Foreca/Facebook and whatever else is usually running on my N900 to see how often these apps actually send traffic in their idle states. it would be great! Anyway, here is the result of powertop execution on my N900: http://pastebin.ca/1624111 I hope it can help you to understand what's happening :) -- Andrea Grandi email: a.grandi [AT] gmail [DOT] com website: http://www.andreagrandi.it PGP Key: http://www.andreagrandi.it/pgp_key.asc ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Hi p.s: my N900 was connected to charger during this test... do I have to disconnect it before doing the test? 2009/10/16 Andrea Grandi a.gra...@gmail.com: Hi, 2009/10/16 Kai Thomsen thoms...@t-online.de: Hmm, Skype and apps like that might suck quite a bit of battery, depending on how chatty they might become in their idle states. Knowing a bit about Skype from monitoring a large company network, especially when it does not get a connection or an unreliable connection it tries to connect to the next Supernode very often, at least once a minute. Wireshark might help you to find out how chatty your N900 is... If I have some time over the weekend, I could run some tests with Wireshark and Skype/Foreca/Facebook and whatever else is usually running on my N900 to see how often these apps actually send traffic in their idle states. it would be great! Anyway, here is the result of powertop execution on my N900: http://pastebin.ca/1624111 I hope it can help you to understand what's happening :) -- Andrea Grandi email: a.grandi [AT] gmail [DOT] com website: http://www.andreagrandi.it PGP Key: http://www.andreagrandi.it/pgp_key.asc -- Andrea Grandi email: a.grandi [AT] gmail [DOT] com website: http://www.andreagrandi.it PGP Key: http://www.andreagrandi.it/pgp_key.asc ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Andrea Grandi wrote: Hi p.s: my N900 was connected to charger during this test... do I have to disconnect it before doing the test? The charger seems to mess up the numbers at least somewhat. I'll do more testing with powertop later. -- Tuomas ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Tuomas Kulve wrote: The charger seems to mess up the numbers at least somewhat. I'll do more testing with powertop later. Well, I did a quite test right away. This is Media Player playing 192kbps VBR Ogg/Vorbis without charger: C# | Ratio | Avg/dura | Frequency | Ratio ++--+---++ C0 | 66.3% | | 600 MHz | 16.5% | C1 | 0.0% |3.1ms | 550 MHz | 0.0% | C2 | 7.4% |3.3ms | 500 MHz | 50.6% | C3 | 26.3% |7.6ms | 250 MHz | 32.9% | C4 | 0.0% | | And the same with charger: C# | Ratio | Avg/dura | Frequency | Ratio ++--+---++ C0 | 65.6% | | 600 MHz | 15.8% | C1 | 0.0% |0.1ms | 550 MHz | 1.3% | C2 | 8.8% |2.7ms | 500 MHz | 52.7% | C3 | 25.7% |7.5ms | 250 MHz | 30.2% | C4 | 0.0% | | No change there. Not sure what I did with an ealier firmware as there I did saw a clear distinction. Maybe I just messed something else up.. -- Tuomas ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
When I think back to the N900 hardware lighting talk and the warning about not fixing the CPU's clock to one of the high frequencies, I guess that connecting the N900 to a charger should not change the power settings of the system, i.e. not like with a laptop CPU that's behaving differently when running on batteries. But that's just a guess, someone with more knowledge of the ARM Cortex 8 architecture or even better the N900's architecture (Nokian's, where are you?) should have the right answer to that. Am Freitag, den 16.10.2009, 21:59 +0200 schrieb Andrea Grandi: Hi p.s: my N900 was connected to charger during this test... do I have to disconnect it before doing the test? 2009/10/16 Andrea Grandi a.gra...@gmail.com: Hi, 2009/10/16 Kai Thomsen thoms...@t-online.de: Hmm, Skype and apps like that might suck quite a bit of battery, depending on how chatty they might become in their idle states. Knowing a bit about Skype from monitoring a large company network, especially when it does not get a connection or an unreliable connection it tries to connect to the next Supernode very often, at least once a minute. Wireshark might help you to find out how chatty your N900 is... If I have some time over the weekend, I could run some tests with Wireshark and Skype/Foreca/Facebook and whatever else is usually running on my N900 to see how often these apps actually send traffic in their idle states. it would be great! Anyway, here is the result of powertop execution on my N900: http://pastebin.ca/1624111 I hope it can help you to understand what's happening :) -- Andrea Grandi email: a.grandi [AT] gmail [DOT] com website: http://www.andreagrandi.it PGP Key: http://www.andreagrandi.it/pgp_key.asc ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Andrea Grandi wrote: Anyway, here is the result of powertop execution on my N900: http://pastebin.ca/1624111 I hope it can help you to understand what's happening :) Copy paste from the link above: C# | Ratio | Avg/dura | Frequency | Ratio ++--+---++ C0 | 27.3% | | 600 MHz | 19.1% | C1 | 0.0% |0.2ms | 550 MHz | 0.0% | C2 | 8.8% |3.0ms | 500 MHz | 21.8% | C3 | 63.7% | 34.2ms | 250 MHz | 59.1% | C4 | 0.1% |6.0ms | Was that an idle device? It really doesn't look like that. Here's a same set from my idle device: C# | Ratio | Avg/dura | Frequency | Ratio ++--+---++ C0 | 0.7% | | 600 MHz | 0.0% | C1 | 0.0% | | 550 MHz | 0.0% | C2 | 0.2% |1.2ms | 500 MHz | 0.0% | C3 | 99.2% | 211.0ms | 250 MHz | 100.0% | C4 | 0.0% | | C-state is the sleep state of the CPU (afaik) and the frequency is the Mhz the cpufreq chooses the run the device based on the cpu load. I don't know what it takes to get to C4. -- Tuomas ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
Hi, 2009/10/16 Tuomas Kulve tuo...@kulve.fi: Was that an idle device? It really doesn't look like that. Here's a same set from my idle device: no, it wasn't idle: I was connected to SSH and executed command from my PC, wifi was ON, connected to Skype, GTalk, SIP account. Facebook, Forecast widgets ON. -- Andrea Grandi email: a.grandi [AT] gmail [DOT] com website: http://www.andreagrandi.it PGP Key: http://www.andreagrandi.it/pgp_key.asc ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 battery duration
OK, I'll do some sniffing over the weekend with a Wifi connection and post the results on Monday. Am Freitag, den 16.10.2009, 21:58 +0200 schrieb Andrea Grandi: Hi, 2009/10/16 Kai Thomsen thoms...@t-online.de: Hmm, Skype and apps like that might suck quite a bit of battery, depending on how chatty they might become in their idle states. Knowing a bit about Skype from monitoring a large company network, especially when it does not get a connection or an unreliable connection it tries to connect to the next Supernode very often, at least once a minute. Wireshark might help you to find out how chatty your N900 is... If I have some time over the weekend, I could run some tests with Wireshark and Skype/Foreca/Facebook and whatever else is usually running on my N900 to see how often these apps actually send traffic in their idle states. it would be great! Anyway, here is the result of powertop execution on my N900: http://pastebin.ca/1624111 I hope it can help you to understand what's happening :) ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
