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  • From: "Fillmore, Tom" <address@concealed>
  • To: address@concealed
  • Subject: [sympa-users] 6.2.3 - enormous cpu usage by web interface / Apache config?
  • Date: Thu, 24 Sep 2015 15:14:43 -0700

Hi, all -

I am at present running a server with about 50 lists and 10,000 users.  Until I got to about 30 lists the web interface loaded quickly, but it has slowed down to a crawl as more lists have been added.  Now its takes no less than 20 seconds to reply, and ultimately causes 500 errors about one-half the time.  During that time CPU usage always goes over 95%. 

I am using Apache2, fcgid and have the value for that set to '1' in sympa.conf.  I've reviewed my Apache configs and they seem to be OK.

Machine specs:  Dual core mac mini, Debian 8.1, MySQL, 6GB RAM.  It's on a virtualbox VM, which some might say is the problem, but in the past I've run on VirtualBox vm's with the same basic configuration and triple the number of lists, users and traffic.

Based on what I've read online in posts + the docs it seems that the problem lies in one or more of these areas:
1) The new web interface is massively slower
2) There is something wrong with my Apache configs
3) There is a problem with the cgi code that generates the web interface
4) fcgid is a dog, speed-wise

Out of these three items I really can only control 2 & 4

I'm open to all ideas, but can a few folks send me their Apache config files that work?  Please be sure to indicate the location where they are installed (eg /etc/apache2/... , /home/sympa/..., etc)

Other than this problem everything is working just fine.

Thanks!

Tom Fillmore




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