Ok.
My speed benchmark result was.
Environment:
USB stick memory 1GB. FAT32 formated
mount command: mount -t vfat -o sync /dev/sda1 /mnt/sda1
1. 2.6.23 GIT w/o DMA (PIO mode)
Read: 7MB/sec
Write: 0.4MB/sec
2. MVL 2.6.10 + TI patch 45 (with DMA and without DMA)
Read: 17MB/sec
Write: 10MB/sec
3. My PC (CentOS 4.5)
Read: 17MB/sec
Write: 10MB/sec
does this make it clear?
2008/4/26, frank xue <[EMAIL PROTECTED]>:
>
>
> Lee,
>
> Thank you! I really appreciate this. I got the patch from the
> URL you mentioned. Now I'm trying port these patches to git kernel.
>
> BTW:
> You said USB performance is *VERY GOOD*, so would you please let
> us know the speed of read/write? Thx
>
>
> From: Ashuaria Lee
> Receiver: frank.xue
> Time: 2008-04-25, 10:42:54
> Subject: Re: Davinci-EVM USB issue at git tree 2.6.23
>
>
>
>
> Hi
>
> You should have a look on the TI's patch for MVL 2.6.10
> I had the same problem on GIt 2.6.23.
> Now I'm running MVL 2.6.10 + TI patch level 45 and it rocks!!!
> USB performance is VERY good on 'MVL 2.6.10 + TI patch'
>
> I wonder if it is possible to port the TI patch to GIT kernel.
>
> ps. SDHC works perfect on 'MVL 2.6.10 + TI patch' =-)
> ps2. Oh, The Link I forgot to mention
> http://wiki.davincidsp.com/index.php?title=Linux_patches
> refer the bottom side.
>
> Good luck!
>
> 2008/4/25, frank xue <[EMAIL PROTECTED]>:
> > Hello All,
> > I'm using Davinci EVM for developing multimedia product. I'm trying to use
> > 2.6.23 kernel cut from git tree. In the default configuration of the
> kernel,
> > the usb driver mode is "USB peripheral", I changed it to "USB Host".
> > re-build the kernel and boot. I noticed the usb driver is unstable. I did
> the
> > following test:
> >
> > #mount /dev/sda1 /mnt
> >
> > (1) read from U-disk
> > #while [ 1 ]; do cp /mnt/test.gz /tmp/test.gz; sync; rm -f /tmp/test.gz;
> done;
> >
> > It's ok.
> >
> > (2) write to U-disk, some errors occured:
> > #while [ 1 ]; do cp /tmp/test.gz /mnt/test.gz; sync; rm -f /mnt/test.gz;
> done;
> >
> > ERROR Message:
> >
> > usb 1-1: reset high speed USB device using musb_hdrc and address 2
> > usb 1-1: reset high speed USB device using musb_hdrc and address 2
> > sd 0:0:0:0: [sda] Result: hostbyte=0x07 driverbyte=0x00
> > end_request: I/O error, dev sda, sector 130650
> > usb 1-1: reset high speed USB device using musb_hdrc and address 2
> > usb 1-1: reset high speed USB device using musb_hdrc and address 2
> > sd 0:0:0:0: [sda] Result: hostbyte=0x07 driverbyte=0x00
> > end_request: I/O error, dev sda, sector 194
> > FAT: FAT read failed (blocknr 162)
> > cp: usb 1-1: reset high speed USB device using musb_hdrc and address 2
> > writing `/mnt/kav7_1.rar': Input/output error
> > usb 1-1: reset high speed USB device using musb_hdrc and address 2
> > ..........
> > usb 1-1: reset high speed USB device using musb_hdrc and address 2
> > sd 0:0:0:0: [sda] Result: hostbyte=0x07 driverbyte=0x00
> > end_request: I/O error, dev sda, sector 187
> > Buffer I/O error on device sda1, logical block 155
> > lost page write due to I/O error on sda1
> > Buffer I/O error on device sda1, logical block 156
> > lost page write due to I/O error on sda1
> > Buffer I/O error on device sda1, logical block 157
> > lost page write due to I/O error on sda1
> > Buffer I/O error on device sda1, logical block 158
> > lost page write due to I/O error on sda1
> > Buffer I/O error on device sda1, logical block 159
> > lost page write due to I/O error on sda1
> > Buffer I/O error on device sda1, logical block 160
> > lost page write due to I/O error on sda1
> > usb 1-1: reset high speed USB device using musb_hdrc and address 2
> >
> >
> > Can anybody help me out for solving this issue? What should i do the next
> step?
> > Thanks.
> >
> >
> >
> > Frank Xue
> >
> > _______________________________________________
> > Davinci-linux-open-source mailing list
> > Davinci-linux-open-source@linux.davincidsp.com
> >
> http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
> >
> >
>
>
> --
> Regards,
> Ashuaria Lee
>
> __________ Information from ESET Smart Security, version of virus signature
> database 3053 (20080424) __________
>
> The message was checked by ESET Smart Security.
>
> http://www.eset.com
>
>
>
--
Regards,
Ashuaria Lee
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