Date: Tue, 01 Apr 1997 15:48:34 -0800 From: David Greenman <dg@root.com> To: Robert Withrow <witr@rwwa.com> Cc: hackers@freebsd.org Subject: Re: Can anyone here help these people? Message-ID: <199704012348.PAA20241@root.com> In-Reply-To: Your message of "Tue, 01 Apr 1997 17:16:05 EST." <199704012216.RAA04747@spooky.rwwa.com>
next in thread | previous in thread | raw e-mail | index | archive | help
>There is an order of magnitude difference in the performance of >postgress between FreeBSD and Linux, with FreeBSD loosing. Here >is a ktrace that shows the problem... ... >Here it's almost 1/5 of a second between getting the "Pblank" (I don't >know what that signifies, maybe it's a clue to something.) after the The problem is caused by the Nagle Congestion Avoidence algorithm. See pages 269-270 of TCP/IP Illustrated, Volume 1. The problem can be eliminated by setting the TCP_NODELAY socket option. -DG David Greenman Core-team/Principal Architect, The FreeBSD Project
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199704012348.PAA20241>