[Freeipa-users] 389-ds memory usage

[Sigbjorn Lie]

On Mon, April 23, 2012 20:38, Rich Megginson wrote:

> Ok.  The current theory is that the memory growth is caused by the churn
> of entries being added to and removed from the entry cache.  It's not yet known why this growth is
> seen.  It could be just that the memory is getting fragmented, or there is a real yet undetected
> memory leak. That's why entry cache sizing and monitoring is very important, to see
> if you are churning entries in/out of the cache, and if that is correlated with the memory growth.
>


This memory issue is still occuring in the production environment after increasing the max entry
cache size to 256MB, and it is impacting performance. See below for an output of the memory usage
and the current size and hitratio of the cache on the 3 production IPA servers.

How do you suggest moving forward to troubleshoot this issue?





Mem:   8050880k total,  7893612k used,   157268k free,     1924k buffers
Swap: 14811120k total,  3738640k used, 11072480k free,    38032k cached

dn: cn=monitor,cn=userRoot,cn=ldbm database,cn=plugins,cn=config
entrycachehitratio: 97
maxentrycachesize: 268435456
currententrycachesize: 14047758
currententrycachecount: 3062



Mem:   8059224k total,  7907904k used,   151320k free,     9060k buffers
Swap: 14811120k total,  2507796k used, 12303324k free,    58104k cached

dn: cn=monitor,cn=userRoot,cn=ldbm database,cn=plugins,cn=config
entrycachehitratio: 99
maxentrycachesize: 268435456
currententrycachesize: 13963883
currententrycachecount: 3062



Mem:   8062240k total,  7932268k used,   129972k free,      864k buffers
Swap:  2097144k total,  2097144k used,        0k free,    16788k cached

dn: cn=monitor,cn=userRoot,cn=ldbm database,cn=plugins,cn=config
entrycachehitratio: 99
maxentrycachesize: 268435456
currententrycachesize: 13809438
currententrycachecount: 3066


Rgds,
Siggi