24 Jan
2003
24 Jan
'03
6:49 a.m.
I have been having NFS performance problems with our F820 / 6.2.1R2 for quite some time now. The filer has a GigE card, but when we start pushing about 10MB/sec ( 50 % CPU load ) we get numerous NFS timeouts from solaris clients mounting the filer via tcp. None of the filer stats (statit et all) show any bottleneck on any of the disks. Looking at network traces from a mirrored port, I see the filer at some point reducing tcp window size to 0, down from its normal value - 26280. Looks like it is running out of juice. Any ideas what might be causing this ?
Pawel
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