hudgens@ray.met.fsu.edu (Jim Hudgens) (02/15/89)
MACHINE: Sun3/280
OS: SunOS 4.0.1
DESCRIPTION:
One of the 4 nfsd's appears to go into a long deep sleep. The most
visible evidence is that the load average on an idle system is near 1.0,
instead of 0.0. I have seen this situation several times, and have found
no correlation with any other activity. In the ps output below, the
system had been up 10 hours. Screenblank, dbx, and several shelltools
were running on an idle login.
This is real intermittent, and somehow seems to correct itself. However,
the process seems to stay in this state for hours.
There is no harm in this situation at all, as far as I know. Anyone knows
what might cause this? In following listing, process 92 is somehow
blocked. Ethernet problems? Disk problems?
# ps -aux
USER PID %CPU %MEM SZ RSS TT STAT START TIME COMMAND
root 91 0.0 0.0 40 0 ? S 10:56 4:18 (nfsd)
root 92 0.0 0.0 40 0 ? D 10:56 0:51 (nfsd)
# ps axl
F UID PID PPID CP PRI NI SZ RSS WCHAN STAT TT TIME COMMAND
8001 0 91 89 0 1 0 40 0 socket S ? 4:18 (nfsd)
8001 0 92 89 0 -2 0 40 0 kernelma D ? 0:51 (nfsd)
# vmstat
procs memory page faults cpu
r b w avm fre re at pi po fr de sr x0 x1 d2 d3 in sy cs us sy id
0 1 0 0 6864 0 3 10 3 6 0 0 2 1 0 0 21 35 25 22 5 73
Jim Hudgens
hudgens@ray.met.fsu.edu