Subject: Re: Thread benchmarks, round 2
To: None <>
From: Christos Zoulas <>
List: tech-kern
Date: 10/05/2007 17:53:45
In article <>,
Thor Lancelot Simon  <> wrote:
>On Fri, Oct 05, 2007 at 11:18:24AM +0200, Kris Kennaway wrote:
>> Here is the initial run with CVS HEAD sources (I took out the obvious 
>> things from GENERIC.MP like I386_CPU support, etc, and removed the 
>> default datasize and stack size limits).  Same benchmark config that 
>> Andrew is using, etc.
>Is this system running an amd64 kernel, or an i386 kernel?  One thing I
>noticed when comparing NetBSD and FreeBSD performance for a very diferent
>workload recently was that NetBSD/amd64 is missing even the most recent
>optimized i386 versions of some fairly basic stuff like memset, memcpy,
>copyin/copyout, much less versions tuned for modern processors (e.g. for
>set and copy SSE2 instructions can be used if you know they're present, as
>we do know on amd64).  I suspect FreeBSD/amd64 is better about this.

NetBSD's amd64 performance sucks right now. My DELL WS 470, runs a *lot*
slower with NetBSD/amd64 than running NetBSD/i386...