Re: SO_SNDBUF size is small on win32?

From: Martijn van Oosterhout <kleptog(at)svana(dot)org>
Subject: Re: [HACKERS] SO_SNDBUF size is small on win32?
Date: Tue, 27 Jun 2006 18:13:18 +0200

> On Tue, Jun 27, 2006 at 11:45:53AM -0400, Andrew Dunstan wrote:
> > No, it says it occurs if this condition is met: "A single *send* call or
> > *WSASend* call fills the whole underlying socket send buffer."
> >
> > This will surely be true if the buffer sizes are the same. They
> > recommend making the socket buffer at least 1 byte bigger.
>
> Ok, but even then, are there any benchmarks to show it makes a
> difference. The articles suggests there should be but it would be nice
> to see how much difference it makes...

I see the problem in this environment.

* client
- Windows XP
- using ODBC driver

* server
- Windows XP
- 8.1.4

* query time
- original -> about 12sec.
- patch version -> about 3sec.

However, this problem did not occur when I changed a client
machine...

Regards,
--
Yoshiyuki Asaba
y-asaba(at)sraoss(dot)co(dot)jp