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Re: pagebuf_prepare_write doesn't kmap the page

To: Steve Lord <lord@xxxxxxx>
Subject: Re: pagebuf_prepare_write doesn't kmap the page
From: Jens Axboe <axboe@xxxxxxx>
Date: Wed, 31 Jan 2001 18:31:17 +0100
Cc: Marcelo Tosatti <marcelo@xxxxxxxxxxxxxxxx>, linux-xfs@xxxxxxxxxxx
In-reply-to: <200101311643.f0VGhgR26778@xxxxxxxxxxxxxxxxxxxx>; from lord@xxxxxxx on Wed, Jan 31, 2001 at 10:43:42AM -0600
References: <lord@xxxxxxx> <200101311643.f0VGhgR26778@xxxxxxxxxxxxxxxxxxxx>
Sender: owner-linux-xfs@xxxxxxxxxxx
On Wed, Jan 31 2001, Steve Lord wrote:
> 
> To follow up on my own message - running some micro benchmarks, every single
> individual operation got faster, but dbench got slower.....

Dbench being slower in 2.4.1 vs 2.4.0 would be quite normal, and
I wouldn't be alarmed if it's the only one disturbed by this. The
easy way to get screamer dbench numbers is to completely ignore
latency and finish one process I/O at the time only.

-- 
Jens Axboe


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