I have noticed, that while working with VMs my system starts swapping after a while. I tried the -rc7 with Mathieus patch (Comment #160) and my system seems to be useable. There is still the non fair io scheduling between processes, but it's another problem. I am using a kernel without "Group CPU Scheduler" and "Control Group Support" and writing this text in firefox at load avg 12.
To reach such high load avg, I have to run eight concurrent dd write operations.
for i in 1 2 3 4 5 6 7 8; do \
dd if=/dev/zero of=test-$i bs=1M count=4K oflag=direct & echo test-$i; \
done
Copying big files with nautilus makes my system from time to time unusable. With known symptoms such as "Unable to switch desktop" and "mouse freezes".
And finally, I have not seen the complete io freeze with -rc7 kernel on xfs, ext3 and ext4.
I have noticed, that while working with VMs my system starts swapping after a while. I tried the -rc7 with Mathieus patch (Comment #160) and my system seems to be useable. There is still the non fair io scheduling between processes, but it's another problem. I am using a kernel without "Group CPU Scheduler" and "Control Group Support" and writing this text in firefox at load avg 12.
To reach such high load avg, I have to run eight concurrent dd write operations.
for i in 1 2 3 4 5 6 7 8; do \
dd if=/dev/zero of=test-$i bs=1M count=4K oflag=direct & echo test-$i; \
done
Copying big files with nautilus makes my system from time to time unusable. With known symptoms such as "Unable to switch desktop" and "mouse freezes".
And finally, I have not seen the complete io freeze with -rc7 kernel on xfs, ext3 and ext4.