more then 2G shm on RELENG_7
phoemix at harmless.hu
Wed Dec 5 14:59:36 PST 2007
On Wed, Dec 05, 2007 at 11:01:02AM -0600, Mark Tinguely wrote:
> on Wed Dec 5 12:11:15 2007, Gergely Czuczy asks:
> > I'm to test PostgreSQL on a 7-BETA3. The box has 12GB of memory in it,
> > I've adjusted the sysctls, but postgresql always fails to allocate the
> > SHM if it's bigger then 2GB.
> > How can I make it to allocate more SHM than 2G at once?
> > sysctl.conf:
> > kern.ipc.shmall=3D1572864
> > kern.ipc.shmmax=3D6442450944
> > kern.ipc.semmap=3D1024
> > kern.ipc.shm_use_phys=3D1
> > /boot/loader.conf:
> > zfs_load=3D"YES"
> > vm.kmem_size=3D"1073741824"
> > vm.kmem_size_max=3D"1073741824"
> > kern.ipc.semmni=3D1024
> > kern.ipc.semmns=3D2048
> > kern.ipc.semmnu=3D1024
> > I've also hit a similar issue with qemu, but that wasn't shared memory,
> > I had just tried to make it allocate more than 2GBs for a single vm, but
> > that also failed. Still haven't figured out why was that.
> Is this an i386 or amd64 arch?
> What is the returned error code? (this might tell a lot).
> I notice that the allocation size for the syscall is an "int".
Amd64, of course.
Dec 5 11:43:11 sqltest postgres: [1-1] FATAL: could not create shared memory segment: Cannot allocate memory
Dec 5 11:43:11 sqltest postgres: [1-2] DETAIL: Failed system call was shmget(key=5432001, size=2151309312, 03600).
That's all I got from the logs.
mailto: gergely.czuczy at harmless.hu
Weenies test. Geniuses solve problems that arise.
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