Vim & Vision
[ #65 ] Throttling Apache Permalink
There is a module called mod_throttle that apparently works for Apache 1.3 (but I'm on 2) but that's not what I'm talking about in this post anyway. I'm talking about limiting memory usage of the httpd processes. You can do this by adding:
RLimitMEM 307200 358400
... to the httpd.conf file. (Numbers are measured in bytes.)
The first parameter sets the soft resource limit for all processes and the second parameter sets the maximum resource limit. Either parameter can be a number, or max to indicate to the server that the limit should be set to the maximum allowed by the operating system configuration. Raising the maximum resource limit requires that the server is running as root, or in the initial startup phase.
Hopefully this will stop some run-away mod_perl processes on my low-memory VM from eating up all the memory and swapping heavily (to the extent that I can't even type into the console when it happens.) We'll see how it works out!
Colophon
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