Re: Another Mindcradt case?

Roger Larsson
2001-02-06T22:02:01Z

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
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