Lee Whatley, Contractor wrote:
Pete Wyckoff wrote:
I think it's best if I get around to doing the event-driven bmi_ib
rather than polling and see if that magically fixes it. Playing
thread scheduling tricks will get us in trouble, as Nathan points
out.
Well, I'm hoping to upgrade this cluster from RHEL3 (2.4 kernel) to
RHEL4 (2.6 kernel) sometime in the next few months. I have a feeling
alot of my problems will go away once that is done.
Hey Pete,
FYI I was finally cleared to upgrade my cluster to RHEL4 (2.6 kernel).
Unfortunately this doesn't look like it fixed my problem. Doing any
operations on a pvfs2 filesystem over native infiniband (i.e. not tcp or
IPoIB) are extermely slow. Just a simple "ls" on a pvfs2 filesystem
with a handful of files and directories takes 5-10 seconds and the
pvfs2-server process takes up 98% of the CPU.
Because of the operational demands of the users on this cluster I can't
change the filesystems back from tcp to ib and get you some debug info
right this moment. I'm hoping I can set up some playspace where I can
give you some more details later this week.
I'll keep you posted,
-Lee
_______________________________________________
Pvfs2-developers mailing list
[email protected]
http://www.beowulf-underground.org/mailman/listinfo/pvfs2-developers
