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Date: Sun, 05 Nov 2006 01:58:56 +0000 From: Alan Cox <alan@...rguk.ukuu.org.uk> To: Mikulas Patocka <mikulas@...ax.karlin.mff.cuni.cz> Cc: Eric Dumazet <dada1@...mosbay.com>, linux-kernel@...r.kernel.org 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. Alan - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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