From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S269841AbUH0BOY (ORCPT ); Thu, 26 Aug 2004 21:14:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S269856AbUH0A74 (ORCPT ); Thu, 26 Aug 2004 20:59:56 -0400 Received: from mail16.syd.optusnet.com.au ([211.29.132.197]:28304 "EHLO mail16.syd.optusnet.com.au") by vger.kernel.org with ESMTP id S269818AbUH0A4D (ORCPT ); Thu, 26 Aug 2004 20:56:03 -0400 Message-ID: <412E868E.7070808@kolivas.org> Date: Fri, 27 Aug 2004 10:55:42 +1000 From: Con Kolivas User-Agent: Mozilla Thunderbird 0.7.1 (X11/20040626) X-Accept-Language: en-us, en MIME-Version: 1.0 To: "Martin J. Bligh" Cc: Nuno Silva , "Rafael J. Wysocki" , Andrew Morton , linux-kernel@vger.kernel.org, Rick Lindsley Subject: Re: 2.6.9-rc1-mm1 References: <20040826014745.225d7a2c.akpm@osdl.org> <412DC47B.4000704@kolivas.org> <200408261636.06857.rjw@sisk.pl> <412E11ED.7040300@kolivas.org> <52540000.1093553736@flay> <412E7004.3070503@kolivas.org> <412E824F.90704@vgertech.com> <412E8475.5000505@kolivas.org> <93300000.1093567895@flay> In-Reply-To: <93300000.1093567895@flay> X-Enigmail-Version: 0.84.1.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enigB21E78ACF1CFAD9BC13163E3" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigB21E78ACF1CFAD9BC13163E3 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Martin J. Bligh wrote: > --On Friday, August 27, 2004 10:46:45 +1000 Con Kolivas wrote: > > >>Nuno Silva wrote: >> >>>Con Kolivas wrote: >>> >>>>If you're talking about using the embedded image viewer in kde, that >>>>spins on wait and wastes truckloads of cpu (a perfect example of poor >>>>coding). Try loading it an external viewer and it will be 1000 times >>>>faster. If you're talking about it keeping the disk too busy on the >>>>other hand, that's I/O scheduling. >>>> >>> >>>The question is: "can a poorly coded app hang the system for 30secs?" >>> >>>That's a DoS ;-) >> >>It does not hang the system, only it's dependant tasks (ie other kde thingies) > > > the display app (not KDE), however, at least seems to deny X of enough time > that the mouse cursor won't move. Much badness! ;-) Yes, priority inversion is a nasty thing indeed. Cheers, Con --------------enigB21E78ACF1CFAD9BC13163E3 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFBLoaQZUg7+tp6mRURAqIUAJ42W+UobsWzBH1rErooXajKhfkbKQCggEB1 Wo+xKgGkoUiU6oAnci/wy2k= =xfiN -----END PGP SIGNATURE----- --------------enigB21E78ACF1CFAD9BC13163E3--