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From Greg Huber <gregh3...@gmail.com>
Subject Re: Service killed by signal 9
Date Sat, 11 Nov 2017 08:49:33 GMT
Coty,

I will try and set it back to 256k, I am using centos 7 on the latest
kernel.

It is an older PC and has 4gb of memory but only reports 3gb.

I can see from top that the memory is not good (gkreallm reports 800mb free)

top - 08:35:40 up  2:25,  1 user,  load average: 0.50, 0.18, 0.14
Tasks: 258 total,   1 running, 257 sleeping,   0 stopped,   0 zombie
%Cpu(s): 13.4 us,  2.2 sy,  0.0 ni, 84.1 id,  0.2 wa,  0.0 hi,  0.2 si,
0.0 st
KiB Mem :  3036956 total,   236104 free,  2216104 used,   584748 buff/cache
KiB Swap:  2113532 total,  1912644 free,   200888 used.   516460 avail Mem

 PID  USER  PR  NI  VIRT       RES       SHR S  %CPU %MEM  TIME+   COMMAND
 1292 user    20   0    3435632 476088   6560 S   0.3     15.7
4:43.96  jsvc

Cheers Greg


On 10 November 2017 at 15:06, Coty Sutherland <csutherl@redhat.com> wrote:

> On Fri, Nov 10, 2017 at 4:31 AM, Greg Huber <gregh3269@gmail.com> wrote:
> > Since switching to jsvc, randomly I am getting tomcat restarting, looking
> > at the logs I see that the jsvc is using alot of memory total-vm:  and
> > being killed by the system.
> >
> > Nov  9 13:11:11 prodbox kernel: Out of memory: Kill process 1287 (jsvc)
> > score 121 or sacrifice child
> > Nov  9 13:11:11 prodbox kernel: Killed process 1287 (jsvc)
> > total-vm:3453120kB, anon-rss:378280kB, file-rss:0kB, shmem-rss:0kB
> >
> > I am using the below on properties on the startup (from previous version
> > statup scripts):
> >
> > -Xms256M -Xmx768m -Xss1280k -XX:+UseParallelGC -XX:MaxGCPauseMillis=1500
> > -XX:GCTimeRatio=9 -server -XX:+DisableExplicitGC
> >
> > (I replaced -Xss256k with -Xss1280k to stop crashing see
> > https://issues.apache.org/jira/browse/DAEMON-365)
>
> The root cause for that broke a lot of things, so I imagine your OS
> has fixed the kernel problem by now. If you tell me which OS I can try
> and see if it's fixed for you. I'd suggest that you try reducing your
> Xss back to 256k and see if that shrinks your process size enough to
> keep it off of oom-killer's radar.
>
> > Is there a way to limit the total-vm or find out why its got so big?
> > -XX:+DisableExplicitGC ??
> >
> > Standard tomcat install with apache/modjk.
> >
> > Cheers Greg
>
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