[Users] Problem in 3.3 with shmmax configuration
Sandro Bonazzola
sbonazzo at redhat.com
Mon Nov 4 10:43:11 UTC 2013
Il 02/11/2013 17:51, Bob Doolittle ha scritto:
> Hi,
>
> I'm setting up Engine for the 2nd time - the first time I answered a configuration question wrong. So I did:
>
> engine-setup
> engine-cleanup
> engine-setup
>
> Things worked, until I rebooted the system. I found that postgresql would not startup, and was failing with "could not create shared memory segment:
> Invalid Argument".
>
> I resolved this issue by creating a file /etc/sysctl.d/10-shmmax.conf, containing the line:
> kernel.shmmax = 1000000000
>
> (I read somewhere that postgresql recommends setting shmmax to 1/4 of physical memory, and I have 4GB)
>
> 1. Is this a known bug? If not, should I file one? If so, how do I do that? :)
Which version are you installing?
Can you please attach all 3 logs from above sequence (setup, cleanup, setup)?
I think something may have gone wrong on second setup execution while setting shmmax.
> 2. Is there a better fix than the one I settled on? Does the normal configuration wind up increasing shmmax, or reducing postgresql's limits? What are
> the default values for this in a normal engine configuration?
No better fix, engine-setup just do something like that, setting shmmax to 35554432.
>
> Thanks,
> Bob
>
>
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--
Sandro Bonazzola
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