stuck TIME_WAIT sockets
is at rambler-co.ru
Fri Oct 2 15:38:26 UTC 2009
On Fri, Oct 02, 2009 at 05:06:46PM +0400, Igor Sysoev wrote:
> The TIME_WAIT sockets suddenly started to grow on a host running
> FreeBSD 7.2-STABLE, date=2009.09.06.23.59.59
> Usually there are 3,000-5,000 TIME_WAIT sockets on the host.
> However, today they stared to grow, have reached 110,000 sockets in hour
> and still remain on this level.
> net.inet.tcp.msl is 30000.
> The host uptime is 24 days, 21:53.
> I have saved a coredump and may try to help to debug the issue.
There are also 10 stuck LAST_ACK sockets.
"swi4: clock sio" is usually idle, however, if I run
netstat -an | grep TIME_WAIT | wc -l
then swi4 gets some CPU:
PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND
11 root 1 171 ki31 0K 16K CPU1 1 112.0H 98.29% idle: cpu1
12 root 1 171 ki31 0K 16K RUN 0 116.8H 94.78% idle: cpu0
14 root 1 -32 - 0K 16K WAIT 0 13:11 1.66% swi4: clock
26 root 1 -68 - 0K 16K WAIT 0 334:11 0.00% irq19: bge0
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