Re: [PERFORM] Regarding facing lot of time Consumed by Socket.Poll()

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: keshav upadhyaya <ukeshav2009(at)gmail(dot)com>
Cc: pgsql-novice(at)postgresql(dot)org
Subject: Re: [PERFORM] Regarding facing lot of time Consumed by Socket.Poll()
Date: 2009-10-17 10:56:56
Message-ID: 603c8f070910170356n1b146447x43e8cccf0aaabd77@mail.gmail.com
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On Thu, Oct 15, 2009 at 10:02 AM, keshav upadhyaya
<ukeshav2009(at)gmail(dot)com> wrote:
> Hi ,
>
> In my project I use Nhibernate to connect to Postgres.
> Currently it is very slow.
>
> I have used Yourkit profiller to get some key informaitons.
> In CPU profilling i have analyzed following  things : -
> Let me explain one by one : -
>
> 1- NHibernate.Impl.SessionImpl.DoLoad(Type, Object, Object, LockMode,
> Boolean)
>
> Takes lots of time .
>
> 2- Internally it calls thse function i am listing the last stack
>
> NpgsqlConnector.Open()
> Npgsql.NpgsqlConnectedState.Startup(NpgsqlConnector)
> Npgsql.NpgsqlState.ProcessBackendResponses(NpgsqlConnector)
> [Wall Time]  System.Net.Sockets.Socket.Poll(Int32, SelectMode)
>
> Finally in last the socket.poll takes most of the time .
>
>
> I want to know the probably causes of the socket.poll() consumes allot of
> time .
>
> Please help me out to know the places why in DoLoad,DoLoadByClass and
> Socket.Poll is taking lot of time .
>
> What are the scenario in which it might be getting slow down , Which i need
> to look .

I'm not sure that you're going to get too much help with this one on
this mailing list. It's not really a PostgreSQL question. You might
try the npgsql guys...

...Robert

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