hyper threading.

[em1897 at aol.com]

I guess that depends on how you define "performance".


The MAX_INTS setting in the em driver essentially does
what polling does (in reducing interrupts) without the
overhead. So there is really no way that polling could
be better. With polling you have a lot of unnecessary
overhead. Setting MAX_INTS properly has zero overhead
for the O/S

-----Original Message-----
From: Anthony Atkielski <atkielski.anthony at wanadoo.fr>
To: freebsd-questions at freebsd.org
Sent: Mon, 28 Mar 2005 06:03:00 +0200
Subject: Re: hyper threading.

em1897 at aol.com writes:

> Polling is simply unecessary in most cases. You could get
> better performance using an em driver and setting max
> ints to whatever is optimal for your system. Polling adds
> latency and over head for no good reason.

Polling often provides better performance, at the expense of higher
overhead.

--
Anthony


_______________________________________________
freebsd-questions at freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to 
"freebsd-questions-unsubscribe at freebsd.org"