Messages in this thread | ![/](/images/icornerl.gif) | | Date | Thu, 1 Aug 2002 04:14:01 -0300 (BRT) | From | Marcelo Tosatti <> | Subject | Re: Linux v2.4.19-rc5 |
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On Thu, 1 Aug 2002, Jens Axboe wrote:
> On Thu, Aug 01 2002, Marcelo Tosatti wrote: > > <akpm@zip.com.au> (02/08/01 1.663) > > [PATCH] disable READA > > Since -rc5 is not to be found yet, I don't know what version of this > made it in. Is READA just being disabled on SMP, or was it the general > #if 0 change that got included?
Its being disabled on UP and SMP. I dont like having such readahead IO mode working only for UP.
> I'm asking since plain disabling READA might have nasty performance > effects. Andrew, I bet you did some numbers on this, care to share?
If thats true (the performance effects) I'll release -final with IMO not very coherent READA semantics :)
Anyway, lets wait for the numbers.
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