Hi, I am using the git kernel 2.6.30 on a dm6446 board based on the evm. I have a process copying files periodically over to a microSD card which has an ext3 filesystem. The copy rate is about 4 MB at a time followed by 40 seconds of sleep. When I have other processes also running on the board, which use about 40 % of the CPU on average, the copy call gets stuck after about 5 minutes. When I do a 'ps aux' I see that the copy is in an 'uninterruptible sleep state' :
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 9498 0.0 0.1 1452 376 pts/0 D+ 17:49 0:00 cp 1MBFile /mnt/usb/1.tst When I do a cat on /sys/class/mmcblk0/stat, the field indicating the number I/Os currently in progress is around 60 and does not come down. I am not able to kill the cp even with a SIGKILL. If I have no other processes running, I do not see this problem. I was able to recreate this issue, both on a 2GB microSD card and a 16GB microSDHC card. Is there any known issue with the SD/MMC driver which could be causing this? Do you think moving to the latest version kernel might fix this? Thanks, Arun
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