Hi.
I am running ubuntu on BBB rev C and I have a USB disk attached. I am having trouble accessing large files on the USB disk over sftp and ftp. When I start a transfer it starts fine but after some minutes CPU is at 100% and the transfer slows to a crawl. I have tried different ftp servers but it makes no difference. I think I have narrowed the problem down to a problem of reading from the USB disk. If I make a large file: dd if=/dev/zero of=file.txt count=1024 bs=4000000 (which seem to be no problem) and try to read it with time sh -c "dd if=file.txt bs=4k" the same thing happens. After a while CPU reaches 100%. I have tried using nice and oinice on the process but it doesn't help. I found a discussion of a similar problem (https://bbs.archlinux.org/viewtopic.php?id=112846&p=4) where it was suggested to set /sys/kernel/mm/transparent_hugepage/defrag to madvise. But I could not figure out how to do that on the BBB (transparent_hugepage doesn't exist and cannot be created). Any ideas for what I can do? -- 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/d/optout.
