Re: Connections "Startup"

Hi

2015-12-22 8:59 GMT+01:00 Artem Tomyuk <admin(at)leboutique(dot)com>:

> Hi.
>
> I've noticed huge decrease in performance.
> During this in htop i see a lot (200 - 300) of connections in state
> "startup", each of them eats 3-3% of CPU time. This processes are not
> visible in pg_stat_activity so i cant understand what they are doing, and i
> cant kill them. I cant see the bottleneck in Disk IO to. The logs of
> postgres says nothing to. I am confused.....
> What can be the cause of huge amount of "startup" connections....
> Maybe its better to start use connection pooler such as pgbouncer?
> Thanks a lot.
>

What is your max_connections? Can you ran "perf top" ? What is there.

Too high number can enforce system overloading. You cannot to see these
connections in pg_stat_activity because the process in this state isn't
fully initialized.

There was lot of bugfix releases after 9.1.2 - currently there is
PostgreSQL 9.2.19. Try to upgrade first.

Regards

Pavel

>
> PS.
> Server config is:
> 2 * Intel Xeon 2660 CPU with 64 gigs of RAM.
> Hardware RAID10.
> Centos 6.6, PostgreSQL 9.1.2
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