Re: [gentoo-user] Hard Disk going a lot slower now...
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Richard Fish wrote: > On 11/27/06, Chris Walters <[EMAIL PROTECTED]> wrote: >> showed a write speed as quoted above, and a read speed of about 280 MB >> per second... > > This seems more like the SATA-II interface speed of ~300MB/s... > >> Though the same one reported a read speed of about 900+ >> MB per second for my USB drive (not really possible, since the maximum >> speed for USB 2.0 is about 480 MB / second). > > Yeah, bogus. And remember that 480 is megabits/sec (Mb/s)...actually > more like 60MiB/s maximum throughput (although I have yet to get more > than 29MiB/s from any USB drive). > >> This is very frustrating. At first the drive was quite fast, under >> windows and now it is extremely slow... I asked about this in a windows >> xp pro group, and so far no one is touching it. > > Well I would first poke around in the device manager for the SATA > interface and make sure it is not in PIO mode. Then check the > property pages of the disk and make sure that write caching is > enabled. Hello Richard, I am beginning to suspect that the quality on those "FreshDevices" is quite low, and will probably remove them. I checked the drive and my IDE/ATAPI drivers - there are exactly two primary channels and two secondary channels. On each of the primary channels is a device in slot 0. The first one is operating in DMA 4 mode (I suspect that this is my DVD-RW drive), while the second one is operating in PIO mode. I couldn't find a way to change that from the device manager, since it is set to use "DMA if available". So that is very likely the problem with the windows slow down. Any ideas on how I can fix this without using the "rescue disc" that came with the computer? Regards, Chris -BEGIN PGP SIGNATURE- iD8DBQFFa7YhUx1jS/ORyCsRCOxoAJ0Uq2qO6GoR3EobMfBP/mVMdq+DVgCghJ0k xbxOJ3fbKqcj3i4V1jd8HXQ= =VPA3 -END PGP SIGNATURE- -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Hard Disk going a lot slower now...
On 11/27/06, Chris Walters <[EMAIL PROTECTED]> wrote: showed a write speed as quoted above, and a read speed of about 280 MB per second... This seems more like the SATA-II interface speed of ~300MB/s... Though the same one reported a read speed of about 900+ MB per second for my USB drive (not really possible, since the maximum speed for USB 2.0 is about 480 MB / second). Yeah, bogus. And remember that 480 is megabits/sec (Mb/s)...actually more like 60MiB/s maximum throughput (although I have yet to get more than 29MiB/s from any USB drive). This is very frustrating. At first the drive was quite fast, under windows and now it is extremely slow... I asked about this in a windows xp pro group, and so far no one is touching it. Well I would first poke around in the device manager for the SATA interface and make sure it is not in PIO mode. Then check the property pages of the disk and make sure that write caching is enabled. -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Hard Disk going a lot slower now...
Ken Gypen wrote: I would assume that the two benchmark programs I am using to measure the drive performance under windows go through windows, and thus the NTFS interface. They are Dr. Hardware and FreshDiagnose. The second one showed a write speed as quoted above, and a read speed of about 280 MB per second... Though the same one reported a read speed of about 900+ MB per second for my USB drive (not really possible, since the maximum speed for USB 2.0 is about 480 MB / second). Hi Chris, A more realistic speed for a HD is about 60-90MB/second... It's hardware limited. So your values are quite off, regardless of the OS and the filesystem. Yeah - when doing this sort of thing ensure you are using files at least 2x(size of RAM) - otherwise you can end up just measuring memory access speed. Cheers Mark -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Hard Disk going a lot slower now...
I would assume that the two benchmark programs I am using to measure the drive performance under windows go through windows, and thus the NTFS interface. They are Dr. Hardware and FreshDiagnose. The second one showed a write speed as quoted above, and a read speed of about 280 MB per second... Though the same one reported a read speed of about 900+ MB per second for my USB drive (not really possible, since the maximum speed for USB 2.0 is about 480 MB / second). Hi Chris, A more realistic speed for a HD is about 60-90MB/second... It's hardware limited. So your values are quite off, regardless of the OS and the filesystem. Greets Glider -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Hard Disk going a lot slower now...
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Richard Fish wrote: > On 11/26/06, Chris Walters <[EMAIL PROTECTED]> wrote: >> Well, in Gentoo, the results of "hdparm -t /dev/sda" were around 65 MB / >> second. dmesg shows the drive in UDMA/133 mode, and I didn't bother >> with lspci. In Windows, however, the benchmarks are quite different - >> around 4300-4600 KB / second. At least I know the problem is not with >> the drive. > > Well one thing to keep in mind here is that disk throughput is not > constant everywhere. That 65MB/s is on low-numbered cylinders, > typically near the outside edge of the drive, where the linear > velocity is highest. That same drive may only give 20-30MB/s on the > inside cylinders. > > What are you using to benchmark the drive under windows? Is it > measuring raw disk throughput, or through the NTFS filesystem? > > -Richard Hello Richard, I would assume that the two benchmark programs I am using to measure the drive performance under windows go through windows, and thus the NTFS interface. They are Dr. Hardware and FreshDiagnose. The second one showed a write speed as quoted above, and a read speed of about 280 MB per second... Though the same one reported a read speed of about 900+ MB per second for my USB drive (not really possible, since the maximum speed for USB 2.0 is about 480 MB / second). This is very frustrating. At first the drive was quite fast, under windows and now it is extremely slow... I asked about this in a windows xp pro group, and so far no one is touching it. Regards, Chris -BEGIN PGP SIGNATURE- iD8DBQFFa2XjUx1jS/ORyCsRCKLNAJ9zw1OjMaoR0jUs7HUoPtqRMm8eAQCggSuA t7LgUJ4TeZySBTFP0R76wJc= =Z/2j -END PGP SIGNATURE- -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Hard Disk going a lot slower now...
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Richard Fish wrote: > On 11/26/06, Chris Walters <[EMAIL PROTECTED]> wrote: >> I suspect that what I did in Linux turned off DMA for this drive, though >> it could be something else. Any ideas or suggestions would be welcome. > > DMA is always enabled for SATA drives. There is nothing special > needed to enable it, although you do need to make sure that you have > the right driver compiled in your kernel for the IO chipset. What > does "hdparm -t /dev/sda" report? If this seems low, post the outputs > of lspci and dmesg. > > -Richard Hi Richard, Well, in Gentoo, the results of "hdparm -t /dev/sda" were around 65 MB / second. dmesg shows the drive in UDMA/133 mode, and I didn't bother with lspci. In Windows, however, the benchmarks are quite different - around 4300-4600 KB / second. At least I know the problem is not with the drive. That must be where the problem lies, since the 65 MB / s is about what Windows was reporting before I repartitioned it and installed Gentoo - the change wasn't immediate, but it was soon after. This is one of the things I hate about Windows... Regards, Chris -BEGIN PGP SIGNATURE- iD8DBQFFakmXUx1jS/ORyCsRCO+CAJ9YAMSAx+RC5aoXxFp+xuVX99ux4gCff+MM Ga0Z/fDEgDN/XxWIy+7TtOA= =mY8c -END PGP SIGNATURE- -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Hard Disk going a lot slower now...
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Hi Aniruddha, The output of: # hdparm -d /dev/sda (I assume you meant my hard drive - /dev/hda is my DVD RW drive) is just the location of the drive, as follows: /dev/sda: Oh and thanks for the link, I will read it when I get a chance. Regards, Chris Aniruddha wrote: > What is the output of: > > # hdparm -d /dev/hda > > Please check here for more tips and info: > http://gentoo-wiki.com/HOWTO_Use_hdparm_to_improve_IDE_device_performance > > grtz, > > Aniruddha -BEGIN PGP SIGNATURE- iD8DBQFFakcBUx1jS/ORyCsRCI/8AJ9aYUeIbm9lNMKsbqy3QJBbjv8HQQCfSgsG NvRUS7J/htdnMcHETaW5vpw= =fz6C -END PGP SIGNATURE- -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Hard Disk going a lot slower now...
On 11/26/06, Chris Walters <[EMAIL PROTECTED]> wrote: I suspect that what I did in Linux turned off DMA for this drive, though it could be something else. Any ideas or suggestions would be welcome. DMA is always enabled for SATA drives. There is nothing special needed to enable it, although you do need to make sure that you have the right driver compiled in your kernel for the IO chipset. What does "hdparm -t /dev/sda" report? If this seems low, post the outputs of lspci and dmesg. -Richard -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Hard Disk going a lot slower now...
What is the output of: # hdparm -d /dev/hda Please check here for more tips and info: http://gentoo-wiki.com/HOWTO_Use_hdparm_to_improve_IDE_device_performance grtz, Aniruddha On Sunday 26 November 2006 15:34, Chris Walters wrote: > Hello Everyone, > > My secondary computer recently got fried, so I had to either rebuild my > first computer from scratch (almost), or just buy an off the shelf > model. Since I've been ill lately, I decided on option #2. I bought a > Gateway system with an AMD Athlon 64 X2 Processor 4200+ (Dual Core), 2 > GB of RAM, an integrated nVidia GeForce 6100 video chipset, and a > Seagate 250 GB SATA II HDD. It has other features, but they are not > important, right now. Oh, and it came preloaded with Windows XP Media > Center Edition. > > What is important is that I used Arconis Disk Director Suite to resize > the massive Windows partition (there are actually two, I didn't resize > the "rescue" partition), and move them so I could have about 128 MB of > unallocated space right at the beginning of the drive, and a lot of > space at the end. > > The reason for this was to create a dual boot system with Windows and > Linux. For a little while, there was no slowdown - the drive was still > quite fast. Then I tried to use hdparm (a Linux tool for viewing and > setting drive parameters). I noticed that DMA was turned off in Linux, > so I tried to turn it on, and got an error. Since then, this drive has > been going very slow - much more slowly than my USB hard drives (and > they are limited to 480 MB / s). > > I suspect that what I did in Linux turned off DMA for this drive, though > it could be something else. Any ideas or suggestions would be welcome. > > Regards, > Chris > > PS: I thought I'd post this here because it involves both Gentoo and > Windows. -- gentoo-user@gentoo.org mailing list
[gentoo-user] Hard Disk going a lot slower now...
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Hello Everyone, My secondary computer recently got fried, so I had to either rebuild my first computer from scratch (almost), or just buy an off the shelf model. Since I've been ill lately, I decided on option #2. I bought a Gateway system with an AMD Athlon 64 X2 Processor 4200+ (Dual Core), 2 GB of RAM, an integrated nVidia GeForce 6100 video chipset, and a Seagate 250 GB SATA II HDD. It has other features, but they are not important, right now. Oh, and it came preloaded with Windows XP Media Center Edition. What is important is that I used Arconis Disk Director Suite to resize the massive Windows partition (there are actually two, I didn't resize the "rescue" partition), and move them so I could have about 128 MB of unallocated space right at the beginning of the drive, and a lot of space at the end. The reason for this was to create a dual boot system with Windows and Linux. For a little while, there was no slowdown - the drive was still quite fast. Then I tried to use hdparm (a Linux tool for viewing and setting drive parameters). I noticed that DMA was turned off in Linux, so I tried to turn it on, and got an error. Since then, this drive has been going very slow - much more slowly than my USB hard drives (and they are limited to 480 MB / s). I suspect that what I did in Linux turned off DMA for this drive, though it could be something else. Any ideas or suggestions would be welcome. Regards, Chris PS: I thought I'd post this here because it involves both Gentoo and Windows. -BEGIN PGP SIGNATURE- iD8DBQFFaaXpUx1jS/ORyCsRCBulAJ9WXiuOYnoGBMb7xFBOFkWYh7eDzgCfZgXA uf6GA+sO6638f0Nb67JrY9M= =fUYd -END PGP SIGNATURE- -- gentoo-user@gentoo.org mailing list
