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From: Bill Davidsen <davidsen@tmr.com>
To: Chris Friesen <cfriesen@nortel.com>
Cc: linux-kernel@vger.kernel.org,
	Jim Nance <jlnance@sdf.lonestar.org>,
	Dave Jones <davej@redhat.com>, Willy Tarreau <willy@w.ods.org>,
	Andrew Morton <akpm@osdl.org>, Ricky Beam <jfbeam@bluetronic.net>,
	nico-kernel@schottelius.org
Subject: Re: /proc/cpuinfo format - arch dependent!
Date: Tue, 10 May 2005 12:21:20 -0400	[thread overview]
Message-ID: <4280DF80.9010409@tmr.com> (raw)
In-Reply-To: <427FC366.1000506@nortel.com>

Chris Friesen wrote:
> Bill Davidsen wrote:
> 
>> Might I suggest that if you like the "we know best just trust us" 
>> approach, there is another OS to use. Making information available to 
>> good applications will improve system performance, or at least allow 
>> better limitation of requests for resources
> 
> 
> What will you do with the information?  The kernel is doing all the 
> resource allocation and scheduling.
> 
>  From a higher-level, the application wants the best performance. 
> Doesn't it make more sense to have an API that lets you query things 
> like: how many cores do I have, how many separate memory interfaces do I 
> have, how many cores handle interrupts, etc.
> 
> Based on that information you tell the system: "I've got 4 processes, 
> please put them all on cores with separate memory connectivity since 
> they're all memory-intensive. Now please put these other two threads on 
> the same cpu since they share memory but serialize each other by design."

Unless you actually have such a feature, saying "let's not make what we 
have useful because we could have something better someday" seems to be 
a needless sacrifice of electrons.

  parent reply	other threads:[~2005-05-10 16:21 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-04-19 12:15 Nico Schottelius
2005-04-19 13:24 ` Lennart Sorensen
2005-04-19 19:17   ` Lee Revell
2005-04-19 20:00     ` Nico Schottelius
2005-04-19 20:02       ` David S. Miller
2005-04-19 20:12       ` Lennart Sorensen
2005-04-19 20:42       ` Lee Revell
2005-04-19 20:54         ` Nico Schottelius
2005-04-19 21:12           ` Grzegorz Kulewski
2005-04-20 20:31   ` Ralf Baechle
2005-05-07  3:37 ` Ricky Beam
2005-05-07  4:01   ` Stefan Smietanowski
2005-05-07  7:55     ` Ricky Beam
2005-05-07 17:51       ` Stefan Smietanowski
2005-05-07 18:05         ` Ricky Beam
2005-05-07 18:46           ` Dr. David Alan Gilbert
2005-05-07  4:14   ` Andrew Morton
2005-05-07  7:58     ` Willy Tarreau
2005-05-07 16:53       ` Dave Jones
2005-05-07 17:05         ` Willy Tarreau
2005-05-07 17:20           ` Dave Jones
2005-05-07 17:18             ` Willy Tarreau
2005-05-08  1:25             ` Jim Nance
2005-05-08 16:11               ` John Kacur
2005-05-09 18:14               ` Bill Davidsen
2005-05-09 20:09                 ` Chris Friesen
2005-05-09 20:26                   ` Lennart Sorensen
2005-05-09 21:25                     ` Brian O'Mahoney
2005-05-10 16:21                   ` Bill Davidsen [this message]
2005-05-10 16:34                     ` Chris Friesen
2005-05-10  2:23                 ` Jim Nance
2005-05-10  4:12                   ` Willy Tarreau
2005-05-10  7:13                   ` Paul Jackson
2005-05-10 16:34                   ` Bill Davidsen
2005-05-07 17:54       ` Stefan Smietanowski
2005-05-07 18:05         ` Willy Tarreau
2005-05-09 18:03     ` Bill Davidsen
2005-05-10  7:21     ` Paul Jackson
2005-05-10 14:38       ` Lennart Sorensen
2005-05-10 16:37         ` Bill Davidsen
2005-05-09 18:00   ` Bill Davidsen
2005-05-09 19:58     ` Lennart Sorensen
2005-05-10 16:49       ` Bill Davidsen
     [not found] <3UZS7-5ue-17@gated-at.bofh.it>
     [not found] ` <41ouh-4QE-1@gated-at.bofh.it>
     [not found]   ` <41oXl-5hl-7@gated-at.bofh.it>
     [not found]     ` <41sxX-8cN-11@gated-at.bofh.it>
     [not found]       ` <41BL4-7l7-15@gated-at.bofh.it>
2005-05-07 23:33         ` Bodo Eggert <harvested.in.lkml@posting.7eggert.dyndns.org>
2005-05-08 13:24           ` Andi Kleen

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