Date: Tue, 21 Aug 2001 16:22:53 +0300 (EEST) From: Giorgos Verigakis <verigak@algol.vtrip-ltd.com> To: Mike Silbersack <silby@silby.com> Cc: <freebsd-hackers@freebsd.org> Subject: Re: Zope's performance issues Message-ID: <Pine.LNX.4.30.0108211617510.24969-100000@algol.vtrip-ltd.com> In-Reply-To: <Pine.BSF.4.30.0108210906380.16880-100000@niwun.pair.com>
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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
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