Cap on network speed in CURRENT?

Robert Watson rwatson at
Tue Jun 1 19:22:32 PDT 2004

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      Senior Research Scientist, McAfee Research

More information about the freebsd-current mailing list