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 _______________________________________________ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source