On Thu, 25 Feb 2016, Marc MERLIN wrote:

On Thu, Feb 25, 2016 at 07:29:36AM +0000, Eric Wheeler wrote:

quoted

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?

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.

-Eric

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/                         | PGP 1024R/763BE901
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