| From: | Martijn van Oosterhout <kleptog(at)svana(dot)org> |
|---|---|
| To: | Yoshiyuki Asaba <y-asaba(at)sraoss(dot)co(dot)jp> |
| Cc: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: SO_SNDBUF size is small on win32? |
| Date: | 2006-06-27 15:31:20 |
| Message-ID: | 20060627153120.GD16840@svana.org |
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| Lists: | pgsql-hackers pgsql-patches |
On Wed, Jun 28, 2006 at 12:23:13AM +0900, Yoshiyuki Asaba wrote:
> Hi,
>
> I see a performance issue on win32. This problem is causes by the
> following URL.
>
> http://support.microsoft.com/kb/823764/EN-US/
>
> On win32, default SO_SNDBUF value is 8192 bytes. And libpq's buffer is
> 8192 too.
Ok, so there's a difficiency in Windows TCP code. Do you have any
benchmarks to show this actually makes a difference. According to the
URL you give, the problem occurs if the libpq buffer is *bigger* than
the socket buffer, which it isn't...
Have a nice day,
--
Martijn van Oosterhout <kleptog(at)svana(dot)org> http://svana.org/kleptog/
> From each according to his ability. To each according to his ability to litigate.
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