linux-kernel - Re: New filesystem for Linux

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Message-ID: <20061104193916.GA11717@irc.pl>
Date:	Sat, 4 Nov 2006 20:39:16 +0100
From:	Tomasz Torcz <zdzichu@....pl>
To:	linux-kernel@...r.kernel.org
Subject: Re: New filesystem for Linux

On Sat, Nov 04, 2006 at 07:40:13PM +0100, Mikulas Patocka wrote:
> >The problem with a per_cpu biglock is that you may consume a lot of RAM 
> >for big NR_CPUS. Count 32 KB per 'biglock' if NR_CPUS=1024
> 
> Does one Linux kernel run on system with 1024 cpus? I guess it must fry 
> spinlocks... (or even lockup due to spinlock livelocks)

  SGI Altix systems comes to mind. I believe that Itanium even comes in
dual core flavor, that would give 2048 CPUs.

-- 
Tomasz Torcz                                                       72->|   80->|
zdzichu@....-nie.spam-.pl                                          72->|   80->|

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