Running 102 parallel "zfs destroy -r" commands on an X4500 running S10U4 has
resulted in "No more processes" errors in existing login shells for several
minutes of time, but then fork() calls started working again. However, none
of the zfs destroy processes have actually completed yet, which is odd since
some of the filesystems are trivially small.
After fork() started working there where hardly any other processes than
the 102 "zfs destroy" running on the system, i.e.,
# ps -ef | wc -l
154
Here is a snapshot of top that looks resonable, note especially that
"free swap" is 16GB and that the "last pid" is still in the range of
the ~100 zfs commands being run.
Is this a known issue? Any ideas on what resource lots of zfs commands use
up to prevent fork() from working?
Thanks.
last pid: 11473; load avg: 0.35, 0.87, 0.68; up 9+00:21:42
18:56:38
148 processes: 146 sleeping, 1 zombie, 1 on cpu
CPU states: 94.2% idle, 0.0% user, 5.8% kernel, 0.0% iowait, 0.0% swap
Memory: 16G phys mem, 1029M free mem, 16G total swap, 16G free swap
PID USERNAME LWP PRI NICE SIZE RES STATE TIME CPU COMMAND
11333 root 1 59 0 3188K 772K cpu/3 0:01 0.02% top
622 noaccess 28 59 0 172M 4528K sleep 4:28 0.01% java
528 root 1 59 0 20M 5092K sleep 2:44 0.01% Xorg
431 root 11 59 0 5620K 1248K sleep 0:01 0.01% syslogd
565 root 1 59 0 10M 1384K sleep 0:53 0.00% dtgreet
206 root 1 100 -20 2068K 1128K sleep 0:21 0.00% xntpd
10864 root 1 59 0 7416K 1216K sleep 0:00 0.00% sshd
7 root 14 59 0 12M 680K sleep 0:05 0.00% svc.startd
158 root 33 59 0 6864K 1616K sleep 0:15 0.00% nscd
312 root 1 59 0 1112K 660K sleep 0:00 0.00% utmpd
340 root 3 59 0 3932K 1312K sleep 0:00 0.00% inetd
582 root 22 59 0 17M 2028K sleep 5:49 0.00% fmd
11432 root 1 59 0 4556K 1496K sleep 0:30 0.00% zfs
11449 root 1 59 0 4556K 1496K sleep 0:27 0.00% zfs
11360 root 1 59 0 4552K 1492K sleep 0:26 0.00% zfs
--
Stuart Anderson [EMAIL PROTECTED]
http://www.ligo.caltech.edu/~anderson
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