From owner-freebsd-hackers Tue Aug 21 6:11:31 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from niwun.pair.com (niwun.pair.com [209.68.2.70]) by hub.freebsd.org (Postfix) with SMTP id 015CF37B406 for ; Tue, 21 Aug 2001 06:11:28 -0700 (PDT) (envelope-from silby@silby.com) Received: (qmail 19117 invoked by uid 3193); 21 Aug 2001 13:11:26 -0000 Received: from localhost (sendmail-bs@127.0.0.1) by localhost with SMTP; 21 Aug 2001 13:11:26 -0000 Date: Tue, 21 Aug 2001 09:11:26 -0400 (EDT) From: Mike Silbersack X-Sender: To: Giorgos Verigakis Cc: Subject: Re: Zope's performance issues In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Tue, 21 Aug 2001, Giorgos Verigakis wrote: > Hello, I'm using Zope application server (www.zope.org) on FreeBSD > and I'm experiencing some serious performance issues. > Since I hadn't noticed any problems at the past with Linux, I did > some benchmarks to investigate it a little. > > I've written a small program that connects to Zope and tries to > retrieve a non-existant URL (source code appended). While Linux > performed almost linearly depending on the number of hits/sec, > FreeBSD (and OpenBSD) performed exponential. I allready sent > a mail to the zope-list but I did not get much info. > Since Zope is a threaded application I was wondering maybe it > was related with the thread implementation (the scheduling maybe?) I suspect that the reload time spiking is due to our initial sequence number generation scheme, which is currently shared with OpenBSD. This will be changing RSN, which will likely change how your benchmarks look. (They should look better after the change.) I'm curious about the reload time, though. Is it really in seconds? What is it measuring? Oops, I just noticed the source below... I'll read it and try out the test to see if my above theory is correct later today. Mike "Silby" Silbersack To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message