Thread

1. shared memory blocks?

   rocael@usa.net — 2000-11-09T07:26:11Z

   Hi,
   how can I  configure my kernel to make it work with shared memory blocks of
   8Mb?
   I'm using RedHat 6.2
   
   Thank you for your help!
   Rocael.
   
   Tom Lane <tgl@sss.pgh.pa.us> wrote:
   <rocael@usa.net> writes:
   > /usr/local/pgsql/bin/postmaster -B 1000 -o "-S 2000" -S -D
   > /usr/local/pgsql/data
   
   > and it says:
   > IpcMemoryCreate: shmget failed (Invalid argument) key=5432001,
   > size=8899584,permission=600
   > This type of erro is usually caused by an improper shared memory or System
   V
   > IPC semaphore configuration. Form more information....
   
   Most likely your kernel isn't set to allow shared memory blocks as
   large as 8M.
   
   			regards, tom lane
   
   
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2. Re: shared memory blocks?

   Poul L. Christiansen <poulc@cs.auc.dk> — 2000-11-09T16:45:40Z

   This line will set the maximum shared memory in Linux to 64MB:
   echo 67108864 > /proc/sys/kernel/shmmax
   
   You can see your default maximum shared memory with this command:
   cat /proc/sys/kernel/shmmax
   
   You should probably set this line in /etc/rd.d/init.d/postgresql or
   somewhere else, before PostgreSQL starts because the change will be set
   back to the default value when Linux restarts.
   
   Poul L. Christiansen
   
   rocael@usa.net wrote:
   > 
   > Hi,
   > how can I  configure my kernel to make it work with shared memory blocks of
   > 8Mb?
   > I'm using RedHat 6.2
   > 
   > Thank you for your help!
   > Rocael.
   > 
   > Tom Lane <tgl@sss.pgh.pa.us> wrote:
   > <rocael@usa.net> writes:
   > > /usr/local/pgsql/bin/postmaster -B 1000 -o "-S 2000" -S -D
   > > /usr/local/pgsql/data
   > 
   > > and it says:
   > > IpcMemoryCreate: shmget failed (Invalid argument) key=5432001,
   > > size=8899584,permission=600
   > > This type of erro is usually caused by an improper shared memory or System
   > V
   > > IPC semaphore configuration. Form more information....
   > 
   > Most likely your kernel isn't set to allow shared memory blocks as
   > large as 8M.
   > 
   >                         regards, tom lane
   > 
   > ____________________________________________________________________
   > Get free email and a permanent address at http://www.netaddress.com/?N=1