Date: Wed, 22 Sep 2010 17:04:56 -0400 From: John Baldwin <jhb@freebsd.org> To: freebsd-hackers@freebsd.org Cc: Curtis Penner <curtis.penner2@gmail.com> Subject: Re: Bumping MAXCPU on amd64? Message-ID: <201009221704.56514.jhb@freebsd.org> In-Reply-To: <4C9A380E.7070807@gmail.com> References: <4C99DC48.1020208@FreeBSD.org> <201009220937.13155.jhb@freebsd.org> <4C9A380E.7070807@gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Wednesday, September 22, 2010 1:08:30 pm Curtis Penner wrote: > MAXCPU at 32 has been good in the 32bit days. Soon there will be (if > not already) systems that will have 16cores/socket or more, and > motherboards that have 4 sockets or more. Combining this with > hyper-threading, you have gone significantly beyond the limits of > feasible server. My point was in response to Maxim's mail about bumping it from 16. Going higher than 32 is a bigger project (but in progress-ish) as it involves transitioning away from a simple int to hold CPU ID bitmasks (cpumask_t) and using cpuset_t instead. -- John Baldwin
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201009221704.56514.jhb>