On Thu, Feb 25, 2016 at 11:30:05PM +0000, Eric Wheeler wrote:
> On Thu, 25 Feb 2016, Marc MERLIN wrote:
>
> > On Thu, Feb 25, 2016 at 07:29:36AM +0000, Eric Wheeler wrote:
> > > Try this patch. It adds some error handling:
> >
> > Thanks, applied. I'll report back if I get output from it.
> >
> > I think one reason I'm having problem on that server is that I run
> > zoneminder which requires a lot of shared memory:
> > kernel.shmall = 234217728
> > kernel.shmmax = 234217728
> >
> > Is there a chance that's putting memory pressure in the wrong memory
> > pool on the system?
>
> Perhaps, though I'm thinking your shm values are far too large. Those are
> in units of pages, so with 4k pages you have set almost 900GB of shared
> memory limit. Does this machine have 1TB of ram?
Indeed, no.
> I like to set vm.min_free_kbytes = 262144 on my machines. Its <1% on our
> systems and we never have memory issues, even with high memory pressure
> and zram for swap.
Very good catch. I'll fix that.
I use zoneminder which requires stupid amounts of shared memory, but not 1TB
:)
Thanks,
Marc
--
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Microsoft is to operating systems ....
.... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/
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