[PVFS2-developers] runaway aio thread

[Nathan Poznick]

Thus spake Pete Wyckoff:
> Not that I know.  My work around makes me happy (except at configure cvs
> update time).  One other concerned user contacted me directly about the
> same thing last week.  Perhaps it doesn't happen on anything other than
> RHEL3 in which case I'm not motivated to figure out the problem, just to
> hack around it in the configure if detected, if some other developer
> runs into this issue too and can corroborate.

Just a note, I set up a single-node PVFS2 volume on a machine running
RHEL3 with update 2, and I don't see this behavior.  When I did a
pvfs2-cp of a file into the volume, the leaders in CPU usage were
pvfs2-cp, pvfs2-server, but keventd (I guess that's what handles the aio
calls into the kernel) was leading the pack (~25%).  It only took 11
seconds to copy the ~500mb file in, and once that was done the CPU usage
of everything involved dropped back to zero.

kernel-smp-2.4.21-15.EL
glibc-2.3.2-95.20

-- 
Nathan Poznick <poznick at conwaycorp.net>

Broad-minded is just another way of saying a fellow's too lazy to form
an opinion. - Will Rogers

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