From: | keshav upadhyaya <ukeshav2009(at)gmail(dot)com> |
---|---|
To: | Matthew Wakeling <mnw21(at)cam(dot)ac(dot)uk> |
Cc: | pgsql-novice(at)postgresql(dot)org |
Subject: | Re: [PERFORM] Regarding facing lot of time Consumed by Socket.Poll() |
Date: | 2009-10-15 14:40:00 |
Message-ID: | d40c44910910150740w4cb805b4j8bdf0a87abf5d39c@mail.gmail.com |
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Lists: | pgsql-novice pgsql-performance |
Thanks Matthew for your quick reply .
Let me make my self more clear.
Suppose While doing one operation in my project, total time taken is 41
min .
in this 41 min around 35 min is takne by this call --
NHibernate.Impl.SessionImpl.DoLoad(Type, Object, Object, LockMode, Boolean)
and DoLoadbyClass().
And i believe internally these calls used
System.Net.Sockets.Socket.Poll(Int32, SelectMode)
Which take most of the time not a bit* time .
And when i Use *MSSQL *no such kind of polling happens and it work in aound
2-3 mins .
So i believe Nhibernate config filles or some other configuration w.r.t.
Postgres is not proper or improvement required.
Thanks,
keshav
On Thu, Oct 15, 2009 at 7:39 PM, Matthew Wakeling <mnw21(at)cam(dot)ac(dot)uk> wrote:
> On Thu, 15 Oct 2009, keshav upadhyaya wrote:
>
>> [Wall Time] System.Net.Sockets.Socket.Poll(Int32, SelectMode)
>>
>
> RTFM. Socket.Poll *waits* for a socket. Obviously it's going to spend quite
> a bit of time.
>
> Note that it is "wall time", not "CPU time".
>
> You would be better investigating whatever is at the other end of the
> socket, which I presume is Postgres. Look at what the queries actually are,
> and try EXPLAIN ANALYSE on a few.
>
> Matthew
>
> --
> It is better to keep your mouth closed and let people think you are a fool
> than to open it and remove all doubt. -- Mark Twain
--
Thanks,
Keshav Upadhyaya
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