Re: LDAP consumes memory

[Matt <openldap@chilitech.com>]

Perhaps 20meg.. however if you add all the 1.9% up it comes out to
around 67% !!!

At any rate I will play with the thread size and see what happens.. yes
I am running Linux.

On Thu, 2003-04-03 at 15:33, Andrew Findlay wrote:
> On Thu, Apr 03, 2003 at 02:01:07PM -0500, Matt wrote:
> 
> > Am I missing something in my config?
> > Slapd seems to be consuming a hord of Memory...  CPU is not a problem...
> 
> > Mem:  1030560K av,  987304K used,   43256K free,       0K shrd,  147448K
> > buff
> > Swap: 2040244K av,   25768K used, 2014476K free                  530016K
> > cached
> > 
> >   PID USER     PRI  NI  SIZE  RSS SHARE STAT %CPU %MEM   TIME COMMAND
> >  4438 nobody    15   0 70480  68M  2312 S     0.0  6.8   0:30 httpd
> > 16559 root      17   0 20224  19M 13548 S     0.0  1.9   0:00 slapd
> > 16560 root      15   0 20224  19M 13548 S     0.0  1.9   0:23 slapd
> > 16561 root      15   0 20224  19M 13548 S     0.0  1.9  49:14 slapd
> > 16565 root      15   0 20224  19M 13548 S     0.0  1.9   7:16 slapd
> > 16638 root      15   0 20224  19M 13548 S     0.0  1.9   7:32 slapd
> > 16749 root      15   0 20224  19M 13548 S     0.0  1.9   7:16 slapd
> > 17122 root      15   0 20224  19M 13548 S     0.0  1.9   7:08 slapd
> > 17541 root      16   0 20224  19M 13548 S     0.0  1.9   7:10 slapd
> > 17844 root      15   0 20224  19M 13548 S     0.0  1.9   7:33 slapd
> .......
> 
> Notice that they all show *exactly* the same size? My guess is that
> you are running on Linux, and that those are all threads in a single
> process. It is probably using a total of 20MB, which is a very small
> proportion of the 1GB you have installed! The rest of the 'used'
> memory is probably file blocks in the buffer cache, as was mentioned
> in another message earlier today.
> 
> Having said that, you do seem to have rather a lot of threads running
> and you may actually get better performance with less. You don't say
> what version of slapd you are running so I don't know what the
> default is for certain, but it is likely to be 32. A discussion on Feb
> 16th suggested that 9 threads was good for a dual P200, and someone
> else suggested 20 on an UltraSPARC. It all depends on the balance
> between your CPU and disk system so you may need to experiment: see
> slapd.conf(5) for the threads directive, and make sure you are running
> 2.1.16 as well...
> 
> Andrew
-- 
Matt <openldap@chilitech.com>