From: Nick Piggin <nickpiggin@yahoo.com.au>
To: John Richard Moser <nigelenki@comcast.net>
Cc: linux-kernel@vger.kernel.org
Subject: Re: ORMAP
Date: Thu, 16 Mar 2006 10:31:40 +1100 [thread overview]
Message-ID: <4418A3DC.9010809@yahoo.com.au> (raw)
In-Reply-To: <44183E75.3080406@comcast.net>
John Richard Moser wrote:
>Nick Piggin wrote:
>
>>2.6 has an object based rmap system working nicely for quite
>>a while now (though it was probably not exactly what you saw
>>in the -wli tree, but a derivative).
>>
>>It would be surprising if that made your system boot 3 times
>>faster though (unless it was on the edge of a swap storm or
>>something)
>>
>
>Dramatization. It was probably around 30 seconds faster on a 2-3 minute
>boot sequence (I had a lot in rc.d), but it was noticeable :P
>
>I was wondering about that stuff. There used to be a few cute things
>out there but I can't remember any of it now. Page clustering etc etc.
>
>
Well I don't think any of that stuff was simply forgotten. Page
clustering for
i386, for example became less important because of objrmap, reductions
in size
of struct page, and the demise of insane highmem machines (due to x86-64).
Nick
--
Send instant messages to your online friends http://au.messenger.yahoo.com
next prev parent reply other threads:[~2006-03-15 23:31 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-15 3:04 ORMAP John Richard Moser
2006-03-15 12:24 ` ORMAP Nick Piggin
2006-03-15 16:19 ` ORMAP John Richard Moser
2006-03-15 23:31 ` Nick Piggin [this message]
2006-03-15 23:47 ` ORMAP John Richard Moser
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