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From: Ed Tomlinson <edt@aei.ca>
To: Evaldo Gardenali <evaldo@gardenali.biz>
Cc: Dave Jones <davej@redhat.com>, linux-kernel@vger.kernel.org
Subject: Re: buggy raid checksumming selection?
Date: Fri, 23 Jan 2004 10:16:45 -0500	[thread overview]
Message-ID: <200401231016.45225.edt@aei.ca> (raw)
In-Reply-To: <20040123141352.GA19002@redhat.com>

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

  parent reply	other threads:[~2004-01-23 15:17 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-01-23 13:40 buggy raid checksumming selection? Evaldo Gardenali
2004-01-23 13:58 ` John Bradford
2004-01-23 14:13 ` Dave Jones
2004-01-23 14:22   ` Nick Piggin
2004-01-23 14:38     ` Dave Jones
2004-01-23 15:16   ` Ed Tomlinson [this message]
  -- strict thread matches above, loose matches on Subject: below --
2004-01-23 14:27 Randal, Phil

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