From: Andrew Morton <akpm@zip.com.au>
To: Lorenzo Allegrucci <lenstra@tiscalinet.it>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Huge console switching lags
Date: Tue, 02 Oct 2001 09:57:22 -0700 [thread overview]
Message-ID: <3BB9F1F2.B6873DFD@zip.com.au> (raw)
In-Reply-To: <3.0.6.32.20011002111131.02693d90@pop.tiscalinet.it>
Lorenzo Allegrucci wrote:
>
> I've experienced huge (4/5 seconds) console switching lags with
> 2.4.10 running this [1], never seen before with any kernel.
In 2.4.10, the console switching code moved from interrupt context
into process context. So if your system is taking a long time to
schedule processes (in this case, keventd) then yes, console
switching will take a long time.
> 2.4.10-ac2 is even worse, it can take up to 10/20 seconds and longer
> to switch from a console to another (CTRL+F1,F2 etc) while running
> the beast below:
>
> [1]
> #!/bin/sh
> bomb(){bomb|bomb&};bomb
>
The simple ones are always the best ones, aren't they?
-
next prev parent reply other threads:[~2001-10-02 16:57 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-02 9:11 Huge console switching lags Lorenzo Allegrucci
2001-10-02 16:57 ` Andrew Morton [this message]
2001-10-02 17:12 ` James Simmons
2001-10-02 18:10 ` Ricky Beam
2001-10-02 18:22 ` Andrew Morton
2001-10-02 18:24 ` Alan Cox
2001-10-02 18:32 ` Ricky Beam
2001-10-02 18:43 ` Alan Cox
2001-10-02 18:50 ` James Simmons
2001-10-02 22:39 ` Alan Cox
2001-10-02 22:50 ` James Simmons
2001-10-02 22:57 ` Alan Cox
2001-10-02 23:13 ` James Simmons
2001-10-03 10:19 ` Benjamin Herrenschmidt
2001-10-03 16:58 ` James Simmons
2001-10-03 17:27 ` Paul Mundt
2001-10-04 7:41 ` Geert Uytterhoeven
2001-10-04 16:49 ` James Simmons
2001-10-02 18:56 ` Chris Wedgwood
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