And Joe Walsh has a Maserati that does 185 . . . Does those platforms use the same exact drivers ?
On Mon, Dec 16, 2013 at 6:47 PM, liyaoshi <[email protected]> wrote: > I got over 30MB/s read speed on freescale iMX6 with 8bit eMMC 4.4 spec > @49.5M :) > > > 2013/12/17 William Hermans <[email protected]> > >> The device tree file for the BBB shows it in 8bit mode. >> >> What I am thinking is that perhaps the low level block device driver in >> the kernel needs optimizing. That and it is not specific to the eMMC >> either. I have no proof here, I have just been noticing a trend with 21MB/s >> about the ceiling for storage speeds. Booting from USB also shows hdparm >> speeds max of 21MB/s( writes ) with reads at 10MB/s. The write / read >> speeds seems to be swapped when compared to an x86 Windows, or Linux >> system. So yeah, seems a bit fishy to me. >> >> >> On Mon, Dec 16, 2013 at 1:12 PM, Gerald Coley <[email protected]>wrote: >> >>> I agree.I suspect that the eMMC is actually set to 4bit in some of the >>> kernels and there may be other issues going on as well.. >>> >>> Gerald >>> >>> >>> On Mon, Dec 16, 2013 at 12:52 PM, John Syne <[email protected]>wrote: >>> >>>> >>>> >>>> From: Gerald Coley <[email protected]> >>>> Reply-To: <[email protected]> >>>> Date: Monday, December 16, 2013 at 6:34 AM >>>> To: "[email protected]" <[email protected]> >>>> Cc: <[email protected]> >>>> Subject: Re: [beagleboard] Boot Android from eMMC without Micro SD ?? >>>> >>>> eMMC runs at 48MHZ. >>>> uSD runs at 48MHz. >>>> eMMC is 8bit. >>>> uSD is 4bit. >>>> >>>> Hi Gerald, >>>> >>>> Based on the specs, you would think that eMMC would run faster, but it >>>> doesn’t. Run the following Linux command to test the speed of each device: >>>> sudo hdparm –tT /dev/mmc0blk0p1 >>>> >>>> SDCard 21MB/s >>>> eMMC 12MB/s >>>> >>>> This doesn’t make sense, but perhaps there is something else going on. >>>> >>>> Regards, >>>> John >>>> >>>> >>>> Gerald >>>> >>>> >>>> >>>> On Mon, Dec 16, 2013 at 8:29 AM, Efecan Yilmaz < >>>> [email protected]> wrote: >>>> >>>>> I'm not an expert but I think, If you want speed, you should use an SD >>>>> cards like this: >>>>> >>>>> >>>>> http://www.samsung.com/uk/consumer/memory-cards-hdd-odd/memory-cards-accessories/micro-sd-plus-accessories/MB-MPAGA/EU?subsubtype=micro-sd-plus-accessories >>>>> >>>>> or something which has min 30 mb/s read speed. I'm using the one in >>>>> the link and my Beaglebone is working without a problem with TI's Android >>>>> image. Don't waste your time trying to boot Beaglebone from eMMC. If you >>>>> use a high speed SD card you'll get better performance. >>>>> >>>>> >>>>> On Monday, 16 December 2013 08:22:58 UTC+2, [email protected]: >>>>>> >>>>>> Hi Gerald, >>>>>> >>>>>> Could you please tell us how this is possible as i also want to flash >>>>>> android or even ubuntu desktop on eMMC. b'coz i want to speed up the OS. >>>>>> I >>>>>> have ubuntu on sdCard but it is very slow. >>>>>> >>>>>> On Monday, September 2, 2013 5:19:33 PM UTC+5:30, Gerald wrote: >>>>>> >>>>>>> Oh, I understand totally. But, the idea is to make sure the board is >>>>>>> OK and functioning, so that is what I suggest going back to the factory >>>>>>> image to make sure. Then work the Android issue. I don't know of anyone >>>>>>> that has flashed the eMMC with an Android image. everything i have seen >>>>>>> so >>>>>>> far is SD card booting only. But it should be possible. >>>>>>> >>>>>>> Gerald >>>>>>> >>>>>>> >>>>>>> >>>>>>> On Mon, Sep 2, 2013 at 3:50 AM, Efecan Yilmaz >>>>>>> <[email protected]>wrote: >>>>>>> >>>>>>>> Hi Gerald. Thanks for the answer. But I'm not trying to boot >>>>>>>> Android from SD card. I'm trying to flash Android files into onboard >>>>>>>> eMMC. >>>>>>>> I want to boot Android without SD card. >>>>>>>> >>>>>>>> >>>>>>>> On Thursday, 29 August 2013 17:29:52 UTC+3, Gerald wrote: >>>>>>>> >>>>>>>>> Did you look here? >>>>>>>>> >>>>>>>>> http://circuitco.com/support/index.php?title=Android >>>>>>>>> >>>>>>>>> Gerald >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> On Thu, Aug 29, 2013 at 9:17 AM, Efecan Yilmaz < >>>>>>>>> [email protected]> wrote: >>>>>>>>> >>>>>>>>>> I'm trying to flash Android into eMMC. I wrote an Angstrom image >>>>>>>>>> into an SD card. I booted BBB wtih that SD card. I create three >>>>>>>>>> partions on >>>>>>>>>> eMMC for Android via terminal in Angstrom. From this point, I'm not >>>>>>>>>> sure >>>>>>>>>> which files I must copy to eMMC's boot and rootfs partitions. And I >>>>>>>>>> think I >>>>>>>>>> must modify some files because I used an image which runs on SD card >>>>>>>>>> (I >>>>>>>>>> think I must change mmcblk0 references to mmcblk1). Long story short: >>>>>>>>>> >>>>>>>>>> 1) Which files I need to copy to eMMC's which partitions? >>>>>>>>>> 2) Which files should I modify for my image to run on eMMC? >>>>>>>>>> (mmcblk0 to mmcblk1 problem) >>>>>>>>>> >>>>>>>>>> If you can help me, I'll be grateful :) >>>>>>>>>> And sorry for my English :) >>>>>>>>>> >>>>>>>>>> -- >>>>>>>>>> For more options, visit http://beagleboard.org/discuss >>>>>>>>>> --- >>>>>>>>>> You received this message because you are subscribed to the >>>>>>>>>> Google Groups "BeagleBoard" group. >>>>>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>>>>> send an email to [email protected]. >>>>>>>>>> >>>>>>>>>> For more options, visit https://groups.google.com/groups/opt_out. >>>>>>>>>> >>>>>>>>> >>>>>>>>> -- >>>>>>>> For more options, visit http://beagleboard.org/discuss >>>>>>>> --- >>>>>>>> You received this message because you are subscribed to the Google >>>>>>>> Groups "BeagleBoard" group. >>>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>>> send an email to [email protected]. >>>>>>>> For more options, visit https://groups.google.com/groups/opt_out. >>>>>>>> >>>>>>> >>>>>>> -- >>>>> For more options, visit http://beagleboard.org/discuss >>>>> --- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "BeagleBoard" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an email to [email protected]. >>>>> For more options, visit https://groups.google.com/groups/opt_out. >>>>> >>>> >>>> -- >>>> For more options, visit http://beagleboard.org/discuss >>>> --- >>>> You received this message because you are subscribed to the Google >>>> Groups "BeagleBoard" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to [email protected]. >>>> For more options, visit https://groups.google.com/groups/opt_out. >>>> >>>> -- >>>> For more options, visit http://beagleboard.org/discuss >>>> --- >>>> You received this message because you are subscribed to the Google >>>> Groups "BeagleBoard" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to [email protected]. >>>> For more options, visit https://groups.google.com/groups/opt_out. >>>> >>> >>> -- >>> For more options, visit http://beagleboard.org/discuss >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "BeagleBoard" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> For more options, visit https://groups.google.com/groups/opt_out. >>> >> >> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to the Google Groups >> "BeagleBoard" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> For more options, visit https://groups.google.com/groups/opt_out. >> > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
