Re: surprisingly slow accept/connect cycle time
From: Chris Wedgwood (cw_at_f00f.org)
Date: 05/25/05
- Previous message: Stephen Rothwell: "[PATCH] ppc64: fix initialisation of gettimeofday calculations"
- In reply to: Clifford T. Matthews: "surprisingly slow accept/connect cycle time"
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Date: Tue, 24 May 2005 20:44:18 -0700 To: "Clifford T. Matthews" <ctm@ardi.com>
On Tue, May 24, 2005 at 02:54:05PM -0600, Clifford T. Matthews wrote:
> static void
> listen_or_die (int fd, int backlog)
> {
> DIE_IF (listen (fd, backlog) != 0);
>
> }
[...]
> listen_or_die (accept_fd, 10);
the backlog is 10, so my guess is that the parent does 10+ connection
attempts before the child can accept them so some SYN packets get
dropped --- and you have to wait for TCP to retry hence the delay you
see
a larger backlog would make things seem to go faster, as would
tweaking the TCP timers
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- Previous message: Stephen Rothwell: "[PATCH] ppc64: fix initialisation of gettimeofday calculations"
- In reply to: Clifford T. Matthews: "surprisingly slow accept/connect cycle time"
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
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