Can you put it on an illumOS based system temporarily and get DTracing?
At the very least this would tell you if its infrastructure or application.
Spin up a Joyent SmartOS or do a local install of OpenIndiana.
Then install your app
This d script will show you when garbage collection is starting and how
long it takes.
node*:::gc-start
{
self->ts = timestamp;
}
node*:::gc-done
{
printf("Garbage Collection - [%Y] - %d",
walltimestamp,
timestamp - self->ts);
self->ts = 0
}
Anton
On Wednesday, November 14, 2012 9:08:04 AM UTC, Dor Tzur wrote:
>
> We're having a problem where every once in a while one of our environments
> our node app runs on 100% CPU. The server isn't very active and usually
> runs on 0%-2% CPU.
> I was wondering what are the common issues that might cause this problem
> and what would be the best way to find out what causing this issue.
>
> technical spec:
> node version 0.8.14
> ubuntu 11.10
> Intel(R) Xeon(R) CPU E5645 @ 2.40GHz
>
> gems used:
> "express" : 2.5.x, "log" : "1.2.x", "redis" : "0.8.x", "socket.io" :
> "0.9.x", "mongodb": ">= 0.9.6-7", "passport" : "0.x.x", "passport-local" :
> "0.x.x",
>
>
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