Re: High SYS CPU - need advise
| От | Vlad |
|---|---|
| Тема | Re: High SYS CPU - need advise |
| Дата | |
| Msg-id | CAKeSUqWdscuKRwX-ZeK=LQQ-EudPdZLCGqAB6LV4A7DuQjG-UQ@mail.gmail.com обсуждение исходный текст |
| Ответ на | Re: High SYS CPU - need advise (John R Pierce <pierce@hogranch.com>) |
| Список | pgsql-general |
it's session mode and the pool size is 1200 (cause I need to grantee that in the worst case we have enough slots for all possible clients), however even at the times preceding high-cpu-sys-stall, the number postmasters are like 15-20. When stall happens, it starts to raise but that's the result of DB not answering in timely manner.
-- Vlad
as far as data - yes, I can probably clean up names and provide some data with same queries, though - we are not able to cause a stall just with those queries & pgbench; we are able to make the situation worse and stall much likely when it's overlapped with regular queries coming from our app.
-- Vlad
On Wed, Nov 21, 2012 at 10:45 AM, Merlin Moncure <mmoncure@gmail.com> wrote:
On Wed, Nov 21, 2012 at 10:43 AM, Jeff Janes <jeff.janes@gmail.com> wrote:also, what mode.
> On Wed, Nov 21, 2012 at 7:29 AM, Vlad Marchenko <marchenko@gmail.com> wrote:
>
>> update on my problem: despite pgbouncer, the problem still occures on my
>> end.
>
> As Merlin asked, how big is the pool? Maybe you are using a large
> enough pool so as to defeat the purpose of restricting the number of
> connections.
merlin
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