lkml.org 
[lkml]   [2002]   [Jan]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: how many cpus can linux support for SMP?
On 17 Jan 2002, Robert Love wrote:

| On Thu, 2002-01-17 at 01:59, Barry Wu wrote:
|
| > I am new to this mail list. I do not know how many CPUs linux can
| > support well using SMP. If some one knows, please give me
| > a reply. Thanks.
|
| 32.
|
| "well" though may mean many things and the answer depends on your
| workload.

On x86, using APICs, Pentium III maximum is 15 due to APIC addressing.
The IBM multiquad patch uses different APIC addressing (physical vs.
logical), so it goes beyond 15.
Pentium 4 APICs have addressing up to 255 IIRC, so they can do more
than P-III's 15.

--
~Randy

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:15    [W:0.082 / U:0.076 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site