From: Giuliano Pochini <pochini@shiny.it>
To: Giuliano Pochini <pochini@shiny.it>
Cc: linuxppc-dev@ozlabs.org
Subject: Re: 2 CPUs, but only one is used
Date: Wed, 20 Dec 2006 00:35:45 +0100 [thread overview]
Message-ID: <20061220003545.7053b05c.pochini@shiny.it> (raw)
In-Reply-To: <20061217144127.579f01f0.pochini@shiny.it>
On Sun, 17 Dec 2006 14:41:27 +0100
Giuliano Pochini <pochini@shiny.it> wrote:
> I have a dual G4 MDD mac running linux 2.6.19. When I boot with maxcpus=1 and
> then I issue "echo 1 >/sys/devices/system/cpu/cpu1/online" the second CPU is
> put online without errors, but it stays idle+wait=100% and of course
> user+system+nice=0%. It works fine without maxcpus=1. No problems with 2.6.18.
>
> I saw that there are some cpu hotplug related changes in 2.6.19, but I have
> no access to a non-ppc dual cpu box to check if the problem also affects
> other architectures right now.
I tried to reproduce the problem on an intel box, but I couldn't. /sys
contains only the cpu0 file if it boots with maxcpus=1.
--
Giuliano.
next prev parent reply other threads:[~2006-12-19 23:47 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-17 13:41 2 CPUs, but only one is used Giuliano Pochini
2006-12-19 23:35 ` Giuliano Pochini [this message]
2006-12-20 4:14 ` Haren Myneni
2006-12-20 14:16 ` Nathan Lynch
2006-12-21 22:33 ` Giuliano Pochini
2006-12-24 16:58 ` Giuliano Pochini
2006-12-25 5:52 ` Nathan Lynch
2006-12-25 10:53 ` Giuliano Pochini
2006-12-29 16:51 ` Giuliano Pochini
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