From: Ingo Molnar <mingo@elte.hu>
To: "Jeff V. Merkey" <jmerkey@vger.timpanogas.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: 2.2.18Pre Lan Performance Rocks!
Date: Mon, 30 Oct 2000 09:39:37 +0100 (CET) [thread overview]
Message-ID: <Pine.LNX.4.21.0010300934200.872-100000@elte.hu> (raw)
In-Reply-To: <20001030002019.B19136@vger.timpanogas.org>
On Mon, 30 Oct 2000, Jeff V. Merkey wrote:
> Is there an option to map Linux into a flat address space [...]
nope, Linux is fundamentally multitasked.
what you can do to hack around this is to not switch to the idle thread
after having done work in nfsd. Some simple & stupid thing in schedule:
if (next == idle_task) {
while (nr_running)
barrier();
goto repeat_schedule;
}
(provided you are testing this on a UP system.) This way we do not destroy
the TLB cache when we wait a few microseconds for the next network
interrupt.
we do this in 2.4 already - ie. nfsd doesnt have to mark itself lazy-MM,
the idle thread will automatically 'inherit' the MM of nfsd, and is going
to switch CR3 only if the next process is not nfsd. So you can get an
apples to apples comparison by using 2.4.
Ingo
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next prev parent reply other threads:[~2000-10-30 7:30 UTC|newest]
Thread overview: 152+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-10-29 23:19 2.2.18Pre Lan Performance Rocks! Jeff V. Merkey
[not found] ` <E13q2R7-0006S7-00@the-village.bc.nu>
2000-10-30 1:35 ` Jeff V. Merkey
2000-10-30 6:47 ` Andi Kleen
2000-10-30 6:58 ` Jeff V. Merkey
2000-10-30 7:08 ` Andi Kleen
2000-10-30 7:16 ` Jeff V. Merkey
2000-10-30 7:38 ` Andi Kleen
2000-10-30 8:04 ` Jeff V. Merkey
2000-10-30 8:16 ` Andi Kleen
2000-10-30 12:47 ` Alan Cox
2000-10-30 12:50 ` Andi Kleen
2000-10-30 8:26 ` Ingo Molnar
2000-10-30 7:20 ` Jeff V. Merkey
2000-10-30 8:39 ` Ingo Molnar [this message]
2000-10-30 8:08 ` Jeff V. Merkey
2000-10-30 9:52 ` Ingo Molnar
2000-10-30 8:55 ` Jeff V. Merkey
2000-10-30 10:13 ` Ingo Molnar
2000-10-30 9:11 ` Jeff V. Merkey
2000-10-30 10:41 ` Ingo Molnar
2000-10-30 9:33 ` Jeff V. Merkey
2000-10-30 10:56 ` Ingo Molnar
2000-10-30 9:45 ` Jeff V. Merkey
2000-10-30 11:04 ` Ingo Molnar
2000-10-30 9:56 ` Jeff V. Merkey
2000-10-30 11:13 ` Ingo Molnar
2000-10-30 10:08 ` Jeff V. Merkey
2000-10-30 17:41 ` Andrea Arcangeli
2000-10-30 17:58 ` Chris Evans
2000-10-30 18:01 ` Jeff V. Merkey
2000-10-30 18:21 ` Andrea Arcangeli
2000-10-30 17:59 ` Jeff V. Merkey
2000-10-31 8:08 ` Ingo Molnar
2000-10-31 20:04 ` Jeff V. Merkey
2000-10-30 19:11 ` Dan Hollis
2000-10-31 18:59 ` Pavel Machek
2000-10-30 10:27 ` Ingo Molnar
2000-10-30 9:20 ` Jeff V. Merkey
2000-10-30 10:44 ` Ingo Molnar
2000-10-30 9:38 ` Jeff V. Merkey
2000-10-30 11:01 ` Ingo Molnar
2000-10-30 9:54 ` Jeff V. Merkey
2000-10-30 11:12 ` Ingo Molnar
2000-10-30 10:06 ` Jeff V. Merkey
2000-10-30 10:56 ` john slee
2000-10-30 18:04 ` Jeff V. Merkey
2000-10-30 11:31 ` Ingo Molnar
2000-10-30 12:57 ` Alan Cox
2000-10-30 17:55 ` Jeff V. Merkey
2000-10-30 18:34 ` Alan Cox
2000-10-30 21:17 ` Jeff V. Merkey
2000-10-31 9:25 ` Erik Andersen
2000-10-31 18:50 ` Pavel Machek
2000-10-31 20:06 ` Jeff V. Merkey
2000-10-31 20:13 ` Jeff V. Merkey
2000-10-31 21:31 ` Ingo Molnar
2000-10-31 21:56 ` Ingo Molnar
2000-10-31 21:57 ` Jeff V. Merkey
2000-11-01 0:27 ` Ingo Molnar
2000-10-31 23:18 ` Jeff V. Merkey
2000-11-01 0:47 ` Ingo Molnar
2000-11-01 0:56 ` Davide Libenzi
[not found] ` <20001102031546.B10806@cerebro.laendle>
[not found] ` <20001101212835.A2425@vger.timpanogas.org>
[not found] ` <20001102043332.A27126@fuji.laendle>
[not found] ` <3A0195DA.DDEBAC51@timpanogas.org>
[not found] ` <20001102194323.D2790@cerebro.laendle>
[not found] ` <3A01CBB5.48C3094A@timpanogas.org>
[not found] ` <20001102214903.F2790@cerebro.laendle>
[not found] ` <3A01E71A.778BD898@timpanogas.org>
[not found] ` <20001102232210.H2790@cerebro.laendle>
[not found] ` <3A01ECD2.76DE10FF@timpanogas.org>
2000-11-02 22:46 ` Jeff V. Merkey
2000-11-03 0:12 ` Davide Libenzi
2000-11-02 23:00 ` Jeff V. Merkey
2000-10-31 21:34 ` Ingo Molnar
2000-10-31 21:52 ` Jeff V. Merkey
2000-10-31 22:05 ` Andi Kleen
2000-10-31 22:23 ` Jeff V. Merkey
2000-10-31 22:45 ` Jeff V. Merkey
2000-10-31 22:44 ` David Lang
2000-10-31 22:57 ` Jeff V. Merkey
2000-10-31 22:52 ` David Lang
2000-10-31 23:02 ` Alan Cox
2000-10-31 23:03 ` Jeff V. Merkey
2000-11-01 0:08 ` Ingo Molnar
2000-10-31 22:59 ` Jeff V. Merkey
2000-11-01 2:30 ` Horst von Brand
2000-10-31 23:05 ` Richard B. Johnson
2000-10-31 23:14 ` Jeff V. Merkey
2000-11-01 0:32 ` Ingo Molnar
2000-10-31 23:23 ` Jeff V. Merkey
2000-11-01 0:55 ` Ingo Molnar
2000-10-31 23:54 ` Ingo Molnar
2000-10-31 22:47 ` Jeff V. Merkey
2000-10-31 22:56 ` Larry McVoy
2000-10-31 22:55 ` Jeff V. Merkey
2000-11-01 0:10 ` Ingo Molnar
2000-11-01 5:38 ` Daniel Phillips
2000-11-03 6:42 ` Daniel Phillips
2000-10-31 22:59 ` Michael H. Warfield
2000-10-31 23:12 ` Ingo Molnar
2000-10-31 22:28 ` Jeff V. Merkey
2000-11-01 5:01 ` Peter Samuelson
2000-11-01 5:09 ` Larry McVoy
2000-11-01 5:20 ` Peter Samuelson
2000-10-30 10:50 ` Ingo Molnar
2000-10-30 9:40 ` Jeff V. Merkey
2000-10-30 23:26 ` David Woodhouse
2000-10-30 23:49 ` Jeff V. Merkey
2000-10-31 23:34 ` Roger Larsson
2000-10-31 15:18 ` Reto Baettig
2000-10-31 20:26 ` Alan Cox
2000-10-31 15:30 ` Reto Baettig
2000-10-31 20:37 ` Alan Cox
2000-10-31 20:48 ` Jesse Pollard
2000-10-31 20:58 ` Alan Cox
2000-11-01 1:33 ` Horst von Brand
2000-11-01 3:42 ` Jesse Pollard
2000-11-01 13:26 ` Horst von Brand
2000-10-31 21:43 ` Jeff V. Merkey
2000-10-31 21:50 ` Jeff V. Merkey
2000-10-31 20:36 ` Rik van Riel
2000-10-31 15:47 ` Reto Baettig
2000-10-31 21:05 ` Rik van Riel
2000-10-31 21:33 ` Jeff V. Merkey
2000-10-31 21:48 ` Rik van Riel
2000-10-31 16:54 ` Reto Baettig
2000-10-31 21:58 ` Rik van Riel
2000-10-31 21:53 ` Jeff V. Merkey
[not found] <200010300823.BAA19834@vger.timpanogas.org>
2000-10-30 8:36 ` Jeff V. Merkey
2000-10-31 21:44 Jeff V. Merkey
2000-10-31 21:36 ` Paul Menage
2000-10-31 21:44 ` David S. Miller
2000-10-31 23:21 ` Matti Aarnio
2000-10-31 23:39 ` David Weinehall
2000-10-31 22:05 ` Larry McVoy
2000-10-31 22:15 ` Jeff V. Merkey
2000-10-31 22:27 ` Larry McVoy
2000-10-31 22:38 ` Jeff V. Merkey
2000-10-31 22:48 ` Rik van Riel
2000-10-31 22:50 ` Jeff V. Merkey
2000-10-31 22:49 ` Larry McVoy
2000-10-31 22:53 ` Jeff V. Merkey
2000-10-31 23:15 ` Nathan Paul Simons
2000-10-31 23:20 ` Jeff V. Merkey
2000-11-01 0:00 ` Michael H. Warfield
2000-11-01 0:07 ` Alan Cox
2000-11-01 0:13 ` Michael H. Warfield
2000-11-01 1:30 ` Andrea Arcangeli
[not found] ` <20001031183809.C9733@.timpanogas.org>
2000-11-01 15:41 ` Andrea Arcangeli
2000-11-01 17:25 ` Jeff V. Merkey
2000-11-01 17:35 ` Jeff V. Merkey
2000-11-01 18:07 ` Andrea Arcangeli
2000-11-01 18:34 ` Jeff V. Merkey
2000-11-01 21:13 ` Daniel Phillips
2000-11-01 21:32 ` Jeff V. Merkey
2000-11-01 11:13 ` David Woodhouse
2000-11-01 15:00 ` Andrea Arcangeli
2000-11-01 9:51 ` Anton Altaparmakov
2000-11-01 17:28 ` Jeff V. Merkey
2000-11-02 21:58 ` Anton Altaparmakov
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