Re: more than 1000 connections

On Wed, Aug 6, 2008 at 1:34 PM, Jorge Medina <jorge@bsdchile.cl> wrote:
> On Wed, Aug 6, 2008 at 1:38 PM, Scott Marlowe <scott.marlowe@gmail.com> wrote:
>> On Wed, Aug 6, 2008 at 11:29 AM, Jorge Medina <jorge@bsdchile.cl> wrote:
>>> On Wed, Aug 6, 2008 at 12:47 PM, Scott Marlowe <scott.marlowe@gmail.com> wrote:
>>>> On Wed, Aug 6, 2008 at 10:42 AM, Jorge Medina <jorge@bsdchile.cl> wrote:
>>>>>>
>>>>> I have many trouble's with server, because my webmail(roundcube) works
>>>>> with the db and the machine only have 2G of RAM but collapse with 60
>>>>> concurrent connections, I try with persistent connections and the same
>>>>> problem, I need configure a pool of connection or something.
>>>>> my config
>>>>> max_connections = 100;
>>>>> shared_buffer = 32MB
>>>>> increase to 460 connections and 128MB of shared buffers but it's the same
>>>>
>>>> What, exactly, are the symptoms of a collapse?  What do the logs
>>>> (pgsql, system, your application) have to say?
>>>>
>>> affect directly the performance
>>
>> I'm trying to help you here, but that answer helps no one.
>>
> I know, sorry but the logs don't show anything when many people try
> login from the webmail begin to grow connections to postgresql and the
> all system turn too slow.

I'm not trying to be difficult, but there's a huge difference between
the system slowing down a bit, slowing down a lot, slowing down to a
crawl, and actually collapsing (failing to respond.)

Are you running out of available connections?  Do you have a lot that
are idle? Do you run the machine out of memory?  What are the symptoms
of your failure?