Date: Fri, 3 Feb 2006 17:51:14 -0500 From: Kris Kennaway <kris@obsecurity.org> To: Andrew Gallatin <gallatin@cs.duke.edu> Cc: freebsd-current@freebsd.org Subject: Re: machdep.cpu_idle_hlt and SMP perf? Message-ID: <20060203225114.GA9845@xor.obsecurity.org> In-Reply-To: <17379.56708.421007.613310@grasshopper.cs.duke.edu> References: <17379.56708.421007.613310@grasshopper.cs.duke.edu>
next in thread | previous in thread | raw e-mail | index | archive | help
[-- Attachment #1 --] On Fri, Feb 03, 2006 at 05:47:32PM -0500, Andrew Gallatin wrote: > > Why dooes machdep.cpu_idle_hlt=1 drop my 10GbE network rx > performance by a considerable amount (7.5Gbs -> 5.5Gbs)? I don't know, but I've set this to 0 on my machines because I also noticed a significant performance drop on general workloads with it set to 1. Kris [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (FreeBSD) iD8DBQFD495iWry0BWjoQKURAnuYAKDuYnmj/z5HBk5WoTrI39GjyKOdNQCeMk8X pURIPg/GUVQOdHc3wtetsYo= =YSkR -----END PGP SIGNATURE-----
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20060203225114.GA9845>