On Mon, Dec 1, 2014 at 12:30 AM, Andrei Mikhailovsky <andrei@xxxxxxxxxx> wrote:
>
> Ilya, further to your email I have switched back to the 3.18 kernel that
> you've sent and I got similar looking dmesg output as I had on the 3.17
> kernel. Please find it attached for your reference. As before, this is the
> command I've ran on the client:
>
>
> time dd if=/dev/zero of=4G00 bs=4M count=5K oflag=direct & time dd
> if=/dev/zero of=4G11 bs=4M count=5K oflag=direct &time dd if=/dev/zero
> of=4G22 bs=4M count=5K oflag=direct &time dd if=/dev/zero of=4G33 bs=4M
> count=5K oflag=direct & time dd if=/dev/zero of=4G44 bs=4M count=5K
> oflag=direct & time dd if=/dev/zero of=4G55 bs=4M count=5K oflag=direct
> &time dd if=/dev/zero of=4G66 bs=4M count=5K oflag=direct &time dd
> if=/dev/zero of=4G77 bs=4M count=5K oflag=direct &
Can you run that command again - on 3.18 kernel, to completion - and
paste
- the entire dmesg
- "time" results for each dd
?
Compare those to your results with four dds (or any other number which
doesn't trigger page allocation failures).
Thanks,
Ilya
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