On 3 March 2014 13:27, Sorin Sbârnea <sorin.sbar...@gmail.com> wrote:
> I have the same problem with latest LTS Ubuntu, and the proper solution > is to set BOTH SHMMAX and SHMALL to the same value, the best is ¼ of > total memory. > > kernel.shmmax = xxx > kernel.shmall = xxx > > Still, I would consider this an real bug, especially because the > postgres error is misleading and incomplete. SHMALL is measured in pages, whereas SHMMAX is measured in bytes. They shouldn't be set to the same values as one another. Regards Thom -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to postgresql-common in Ubuntu. https://bugs.launchpad.net/bugs/264336 Title: pgsql fails to start due to shared buffer setting greater than kernel allows Status in “linux” package in Ubuntu: Won't Fix Status in “postgresql-8.3” package in Ubuntu: Won't Fix Status in “postgresql-9.1” package in Ubuntu: Confirmed Status in “postgresql-common” package in Ubuntu: Invalid Status in “linux” source package in Jaunty: Won't Fix Status in “postgresql-8.3” source package in Jaunty: Won't Fix Status in “postgresql-9.1” source package in Jaunty: Invalid Status in “postgresql-common” source package in Jaunty: Invalid Bug description: Binary package hint: postgresql-8.3 Freshly installed pgsql 8.3 on hardy got me this error when restarting: 2008-09-03 09:16:39 EDT DETAIL: Failed system call was shmget(key=5432001, size=38207488, 03600). 2008-09-03 09:16:39 EDT HINT: This error usually means that PostgreSQL's request for a shared memory segment exceeded your kernel's SHMMAX parameter. You can either reduce the request size or reconfigure the kernel with larger SHMMAX. To reduce the request size (currently 38207488 bytes), reduce PostgreSQL's shared_buffers parameter (currently 4096) and/or its max_connections parameter (currently 103). If the request size is already small, it's possible that it is less than your kernel's SHMMIN parameter, in which case raising the request size or reconfiguring SHMMIN is called for. The PostgreSQL documentation contains more information about shared memory configuration. Checking the kernel settings: sudo sysctl -a | grep -i shm kernel.shmmax = 33554432 kernel.shmall = 2097152 kernel.shmmni = 4096 The shared_buffers setting defaults to 32MB. I changed this down to 25MB to test and then the server would start right up. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/264336/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
