Hello,
Today we started noticing slow tcp response from sendmail running on
Tru64 5.1A. The behavior is basically slow to no(timed out) response on
tcp port 25. The logs don't show anything. It is a 2 processor DS20
with a load avg of around 1. The CPU's don't do much.
vmstat, iostat, netstat all show normal, expected information. There
are no page outs. Disk IO seems normal. There are no network errors or
collisions.
The mailq has about 1700 messages waiting in it, but most are to
deferred hosts, etc. There is usually around 21 sendmail processes
running, processing the queue at any given time.
Even a 'telnet localhost 25' will occasionally time out, even though now
it is 5:30pm, off our peak hours, so our load is under .5.
If anyone has any clues or pointers I would appreciate it.
--
Jay R. Wren
Systems Programmer
Oakland University
Rochester, Michigan
Received on Tue Apr 30 2002 - 21:20:47 NZST