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  • From: address@concealed
  • To: address@concealed
  • Subject: [sympa-users] WWSympa performance problem
  • Date: Wed, 29 Sep 2004 20:20:16 +0200


We have recently migrated 800 sympa lists to a much faster server/connection,
but rendering the sympa web pages is very slow. MySQL seems to be configured
OK - indices in-place, etc ... apache is quick to build pages outside of
sympa's realm ... fcgi is running without errors ... the only clue that I can
see is that perl is taking a huge amount of CPU when a sympa page is accessed
-nearly 100%. The size of the perl (5.8.4) binary itself is very large:

-rwxr-xr-x 2 root root 1057324 2004-09-26 /usr/bin/perl

...compared to the previous perl (5.8.0):

-rwxr-xr-x 2 root root 12572 Aug 13 2003 /usr/bin/perl

...but that could be an anomaly. As you can see, a snapshot of "top" shows
how perl takes over the cpu when a webpage is hit:

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
21309 sympa 17 0 38580 37m 2288 R 88.7 4.3 0:03.81 perl5.8.4
26917 sympa 16 0 67140 61m 2380 S 10.3 6.9 12:38.86 task_manager.pl
912 root 9 0 628 616 544 S 0.3 0.1 9:20.31 syslogd
26893 sympa 9 0 36748 32m 2416 S 0.3 3.7 3:28.32 sympa.pl


Any thoughts would be much appreciated.

-Dean



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