Re: [PATCH] superbh, fractured blocks, and grouped io

From: Joel Becker (Joel.Becker@oracle.com)
Date: Tue Oct 15 2002 - 14:33:49 EST

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On Tue, Oct 15, 2002 at 09:44:23AM +0200, Jens Axboe wrote:
> We don't want to make them too large anyway, and I think that 64k-1 is
> more than enough. Maybe it would even be better to simply use an even
> 32kb. Consider someone writing in chunks of 64kb. It would simply suck
> to get one 65024b request followed by a 512b one.

Well, 64K-1 is really 64K-hardsect_size. In practice, it will
probably be 32K, as folks like power-of-two buffers. Some people would
claim that larger sizes (128K, 512K) can improve throughput.

Joel

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Joel Becker Senior Member of Technical Staff Oracle Corporation E-mail: joel.becker@oracle.com Phone: (650) 506-8127 - 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/

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