Bug#485413: apache2/lenny/amd64 eats up all RAM
On Monday 15 August 2011, Thorsten Glaser wrote:
> Can please someone recommend a different ulimit,
> or some other suggestion?
You could provide some more information:
- How much memory does your machine have, how much is actually
available for apache (i.e. not used by other processes).
- Which MPM do you use?
- What are your settings for StartServers, MaxRequestsPerChild,
- How large do the apache2 processes grow? (RSS) How quickly do they
- How many apache2 are running during normal operation?
Tune the above settings. If processes grow slowly, you may be hitting
a memory leak. Setting MaxRequestsPerChild to non-zero (e.g. to 500)
If that doesn't help, try setting 'MaxMemFree 4'. If that doesn't help
enough, add 'export MALLOC_MMAP_THRESHOLD_=8000' to
/etc/apache2/envvars (the trailing underscore is not a typo). These
options lower performance, though.
Please report back about the results.