From owner-freebsd-hackers Tue Aug 21 6:25:59 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from algol.vtrip-ltd.com (algol.vtrip-ltd.com [139.91.200.19]) by hub.freebsd.org (Postfix) with ESMTP id 6481C37B40D for ; Tue, 21 Aug 2001 06:25:51 -0700 (PDT) (envelope-from verigak@vtrip-ltd.com) Received: from verigak (helo=localhost) by algol.vtrip-ltd.com with local-esmtp (Exim 3.12 #1 (Debian)) id 15ZBUb-0006oD-00; Tue, 21 Aug 2001 16:22:53 +0300 Date: Tue, 21 Aug 2001 16:22:53 +0300 (EEST) From: Giorgos Verigakis To: Mike Silbersack 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, Mike Silbersack wrote: > > 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 don't understand. How is it related with the initial sequence number? > > I'm curious about the reload time, though. Is it really in seconds? What > is it measuring? Yes it's in seconds. What I wanted to measure was the time a page needs to be loaded, because the results I was getting were unexpectable. > > 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