From: "H. Peter Anvin" <hpa@zytor.com>
To: "Calin A. Culianu" <calin@ajvar.org>
Cc: Stevie O <stevie@qrpff.net>, linux-kernel@vger.kernel.org
Subject: Re: Asynchronous CDROM Events in Userland
Date: Mon, 04 Feb 2002 20:47:52 -0800 [thread overview]
Message-ID: <3C5F63F8.90808@zytor.com> (raw)
In-Reply-To: <Pine.LNX.4.30.0202042341030.31336-100000@rtlab.med.cornell.edu>
Calin A. Culianu wrote:
>>>
>>Does it spin up the CD-ROM doing so?
>>
>
> Probably it doesn't, but just having the cpu be non-idle when it could
> otherwise be idle does add up over time. In linux, polling the cdrom
> *seems* inexpensive enough, but if you look at 'top' it seems to average
> out to like 1-2% cpu time! (Ok, these stats aren't super-accurate,
> they're just from running 'top' with the kde autorun tool running).
>
> [Admitedly, the autorun tool is written kind of strangely (it does one
> redundant ioctl, plus it wait()s on its children constantly rather than
> installing a signal handler), but still.. it would be nice to get those
> extra cycles for quake3 or wolfenstein...]
>
That just indicates a bullsh*t program. It's also pretty certain that
these kinds of things don't belong in the GUI; one of the things I'd
like to do at some point is to write a daemon to mount things on insert
(vold).
-hpa
next prev parent reply other threads:[~2002-02-05 4:48 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-02-04 4:41 Asynchronous CDROM Events in Userland Calin A. Culianu
2002-02-04 5:07 ` H. Peter Anvin
2002-02-04 5:19 ` Calin A. Culianu
2002-02-04 12:43 ` john slee
2002-02-04 15:23 ` Calin A. Culianu
2002-02-04 16:20 ` H. Peter Anvin
2002-02-04 7:04 ` Erik Andersen
2002-02-04 7:57 ` Jens Axboe
2002-02-04 9:33 ` Gregor Jasny
2002-02-04 9:39 ` Jens Axboe
2002-02-04 14:05 ` hugang
2002-02-05 7:43 ` Jens Axboe
2002-02-04 12:16 ` Alan Cox
2002-02-04 20:51 ` oops booting 2.4.18-pre7-ac3 Todd M. Roy
2002-02-05 4:04 ` Asynchronous CDROM Events in Userland Stevie O
2002-02-05 4:28 ` H. Peter Anvin
2002-02-05 4:44 ` Calin A. Culianu
2002-02-05 4:47 ` H. Peter Anvin [this message]
[not found] ` <a3l4uc@cesium.transmeta.com>
2002-02-06 14:22 ` Pavel Machek
2002-02-06 22:48 ` H. Peter Anvin
-- strict thread matches above, loose matches on Subject: below --
2002-02-05 13:17 David Balazic
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