Technical issues on Linux
Rich Braun
richb at pioneer.ci.net
Thu Aug 8 15:56:55 EDT 1996
I'm looking for hints on fixing any of three technical problems associated
with managing high-volume Linux servers...
1) The TCP connect() system call apparently never times out in current
versions of Linux. This caused mail server crashes here during the AOL
outage Tuesday (hundreds of sendmail processes building up, waiting
indefinitely for the AOL server to come back up).
2) Packet fragmentation problems lead to frequent complaints that the
web pages can't be viewed without glitches (this includes www.bcs.org).
3) I notice syslogd taking up an inordinate amount of processor time,
causing slowdowns in POP3 email access and logins (ftp, etc). Sometimes
it takes upwards of a minute for an item to get logged, if a lot of
system activity is taking place, during which the syslogd process (on a
P-133, mind you) is racking up 80% or more of CPU usage.
-rich
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