From: Ed Tomlinson <edt@aei.ca>
Organization: me
To: Evaldo Gardenali <evaldo@gardenali.biz>
Subject: Re: buggy raid checksumming selection?
Date: Fri, 23 Jan 2004 10:16:45 -0500
User-Agent: KMail/1.5.93
Cc: Dave Jones <davej@redhat.com>, linux-kernel@vger.kernel.org
References: <40112465.8040801@gardenali.biz> <20040123141352.GA19002@redhat.com>
In-Reply-To: <20040123141352.GA19002@redhat.com>
MIME-Version: 1.0
Content-Disposition: inline
Content-Type: text/plain;
  charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
Message-Id: <200401231016.45225.edt@aei.ca>
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 721
Lines: 17

On January 23, 2004 09:13 am, Dave Jones wrote:
> On Fri, Jan 23, 2004 at 11:40:53AM -0200, Evaldo Gardenali wrote:
>  > Uhh. correct me if I am wrong, but shouldnt it select the fastest
>  > algorithm?
>
> No, if it can choose a function which avoids polluting the cache over
> one that doesn't, it will.  Even if that means slightly less raw throughput

In this case it is half the throughput.  When is it reasonable to use the 
fast method?  If never, why even test it?

Ed
-
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/