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Date:	Sun, 05 Nov 2006 01:58:56 +0000
From:	Alan Cox <>
To:	Mikulas Patocka <>
Cc:	Eric Dumazet <>,
Subject: Re: New filesystem for Linux

Ar Sad, 2006-11-04 am 19:40 +0100, ysgrifennodd Mikulas Patocka:
> > 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)

Altix goes that big and bigger. 

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