Am 29.10.2009 um 01:00 schrieb Lukasz Czarnowski:
> I had the same experience with kernel 2.6.22.x-vs2.2.x and pgsql 8.1
> - shmem is counted several times.
I played with the shared memory example shown at [1] and it seems,
that in general everything is working fine, except Postgres.
So, until someone is able to fix this, Linux vServer and Postgres ->
Don't do it! :(
guest1:/# /etc/init.d/postgresql-8.4 start
Starting PostgreSQL 8.4 database server: main.
guest1:/# ipcs
------ Shared Memory Segments --------
key shmid owner perms bytes nattch status
------ Semaphore Arrays --------
key semid owner perms nsems
------ Message Queues --------
key msqid owner perms used-bytes messages
guest1:/# ./shmserver
(from another console)
guest1:~# ipcs
------ Shared Memory Segments --------
key shmid owner perms bytes nattch status
0x0000162e 65537 root 666 27 1
------ Semaphore Arrays --------
key semid owner perms nsems
------ Message Queues --------
key msqid owner perms used-bytes messages
guest1:~# ./shmclient
abcdefghijklmnopqrstuvwxyz
q.e.d.
[1] http://www.cs.cf.ac.uk/Dave/C/node27.html
Received on Thu Oct 29 00:20:25 2009