From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: text/plain; charset="iso-8859-1" From: Roger Larsson Subject: Re: Another Mindcradt case? Date: Tue, 6 Feb 2001 23:02:01 +0100 References: <200102062024.VAA15550@front3.grolier.fr> In-Reply-To: <200102062024.VAA15550@front3.grolier.fr> MIME-Version: 1.0 Message-Id: <01020623020100.01503@dox> Content-Transfer-Encoding: 8bit Sender: owner-linux-mm@kvack.org Return-Path: To: Jean Francois Martinez , linux-mm@kvack.org List-ID: Hi, Please note that Moshe is (usually) very pro Linux (read his earlier columns). I guess that he had expected Linux 2.4 to really beat FreeBSD - it did not... /RogerL On Wednesday 07 February 2001 01:25, Jean Francois Martinez wrote: > Moshe Barr is claiming on Byte that sendmail and mysql are 30% faster on > FreeBSD than Linux 2.4. Now given that I don't think that mysql is > spending 30% of its time in kernel mode there are not many ways FreeBSD can > be 30% faster. > > 1) Compiler issues. Moshe Barr does not tell what distrib ha was using so > we don't know what distribution was used and with what > > 2) Driver problems, specally those related to enabling UltraDma since > without UltraDMA most disks are both very slow and CPU hogs. > > 3) Options not enabled. This a 2.2 Linux distrib with a 2.4 keernel > plastered on it and thus software has not been compiled to take advantage > of 2.4bfeatures and the boot sequence does not do a good job of tuning the > kernel through sysctl > > 4) Memory management. If FreeBSD is smarter than Linux about which page to > thow out it will be _much_ faster when memory is tight. > > > Now what about a Mindcraft-style reaction? Check what was wrong in the > test protocol, write an answer if it was due to the test and in case it was > not the test but a perfomance bottleneck fix it. > > Moshe (and a few other people will do the same) was wondering why to stay > with Linux so better fix the problems if we want Linux and not BSD reaching > world domination. > > > JF > Martinez > -- > To unsubscribe, send a message with 'unsubscribe linux-mm' in > the body to majordomo@kvack.org. For more info on Linux MM, > see: http://www.linux.eu.org/Linux-MM/ -- Home page: none currently -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux.eu.org/Linux-MM/