Re: Cap on network speed in CURRENT?

From: Robert Watson <rwatson_at_freebsd.org>
Date: Tue, 1 Jun 2004 22:21:50 -0400 (EDT)
On Tue, 1 Jun 2004, Luke wrote:

> This is indeed a very slow host, by modern standards.  It's a fussy old
> Pentium 166MHz that I've put through hell for the last eight years or
> so. 
> 
> I'm building a kernel with witness and invariants turned off.  Building
> a kernel usually takes overnight.  I'll try it out tomorrow and see how
> it goes.  If those testing programs don't require X, I'll see about
> installing one of them to help me figure out what's going on.  The iperf
> site looks like it's got some helpful information that I should read
> too. 

Also, try disabling SMP and possibly APIC support if it's a UP box. 
There's a measurable performance overhead to compiling with SMP support,
since mutexes have to be compiled with locked instructions. 

Robert N M Watson             FreeBSD Core Team, TrustedBSD Projects
robert_at_fledge.watson.org      Senior Research Scientist, McAfee Research
Received on Tue Jun 01 2004 - 17:22:32 UTC

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