PID USERNAME PRI NICE SIZE RES STATE TIME WCPU CPU COMMAND 55651 mysql 8 12 138M 33524K nanslp 0:21 0.00% 0.00% mysqld 55649 mysql 20 14 138M 33524K pause 0:21 0.00% 0.00% mysqld 55866 mysql 4 14 138M 33524K sbwait 0:12 0.00% 0.00% mysqld
Ya, since you're using linuxthreads, these are all really one process with one single 138MB address space; note that SIZE and RES are identical all the way down.
76746 squid 96 0 90756K 38016K select 4:16 0.00% 0.00% squid 56725 pmx4 96 0 36524K 34908K select 0:01 0.00% 0.00% perl 56724 pmx4 96 0 36172K 34560K select 0:00 0.00% 0.00% perl
Try running "ps axlm", which will show all the processes sorted by memory usage. If there are more of those perl scripts running, they may be a contributing factor. Apache with script modules (perl/php etc) can also suck up lots of memory if you get lots of hits at once.
You learn something new every day. It seems the culprit actually was our anti-spam engines + apache/mod_fastcgi.
We're down to 100MB Swap used and 100MB free MEM - big difference. We'll need to get a upgrade though, we must be able to carry the load...
Thanks for the help
-- Chris.
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