ipcs in FreeBSD is a little ... tricky.
ipcs -M
ipcs -m
ipcs -am
could be your friends
On Δευ 05 Νοε 2012 11:22:46 Frank Broniewski wrote:
> Hi,
>
> I am running a PostgreSQL server on FreeBSD. The system has 32GB memory.
> Usually I use top to examine the memory usage of the system. After a
> while, a part, approximately 5GB, vanish from top, so that the memory
> rounds up to 27GB. After restarting PostgreSQL, I have all 32GB again
> available, but then it's already slightly decreasing. It's a standalone
> database server. It has an OpenStreetMap world database running with
> 353GB data (with indices).
>
> Some system information:
> # uname -r
> 9.0-RELEASE-p3
> # pg_ctl --version
> pg_ctl (PostgreSQL) 9.1.6
>
> # cat /boot/loader.conf
> ...
> kern.ipc.semmni=256
> kern.ipc.semmns=512
> kern.ipc.semmnu=256
> kern.ipc.semumr=200
> vm.pmap.shpgperproc=400
> vm.pmap.pv_entry_max=50331648
> ...
>
> # cat /pgdata/data/postgresql.conf
> ...
> default_statistics_target = 50 # pgtune wizard 2012-04-04
> maintenance_work_mem = 4GB # pgtune wizard 2012-04-04
> constraint_exclusion = on # pgtune wizard 2012-04-04
> checkpoint_completion_target = 0.9 # pgtune wizard 2012-04-04
> effective_cache_size = 24GB # pgtune wizard 2012-04-04
> work_mem = 768MB # pgtune wizard 2012-04-04
> wal_buffers = 16MB # pgtune wizard 2012-04-04
> checkpoint_segments = 60 # 20
> shared_buffers = 8GB # pgtune wizard 2012-04-04
> max_connections = 100
> synchronous_commit = off
>
>
> So any help finding out why my system "looses" some RAM is greatly
> appreciated :-) If more information is needed I will gladly provide it.
>
> Frank
>
>
>
>
-
Achilleas Mantzios
IT DEPT