Re: [patch] zero-bounce block highmem I/O, #13

From: Jens Axboe (axboe@suse.de)
Date: Tue Aug 28 2001 - 05:55:20 EST


On Tue, Aug 28 2001, Christoph Rohland wrote:
> Hi Jens,
>
> I tested both #11 and #13 on my 8GB machine with sym53c8xx. The
> initialization of a SAP DB database takes 20 minutes with 2.4.9 and
> with 2.4.9+b13 it took nearly 2.5 hours :-(

DaveM hinted that it's probably the bounce test failing, so it's
bouncing all the time. That would explain the much worse performance.
Could you try with this incremental patch on top of b13 for 2.4.9? I
still want to see the boot detection info, btw.

THanks!

-- 
Jens Axboe


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