From: Con Kolivas <kernel@kolivas.org>
To: "Martin J. Bligh" <mbligh@aracnet.com>
Cc: Nuno Silva <nuno.silva@vgertech.com>,
"Rafael J. Wysocki" <rjw@sisk.pl>, Andrew Morton <akpm@osdl.org>,
linux-kernel@vger.kernel.org, Rick Lindsley <ricklind@us.ibm.com>
Subject: Re: 2.6.9-rc1-mm1
Date: Fri, 27 Aug 2004 10:55:42 +1000 [thread overview]
Message-ID: <412E868E.7070808@kolivas.org> (raw)
In-Reply-To: <93300000.1093567895@flay>
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Martin J. Bligh wrote:
> --On Friday, August 27, 2004 10:46:45 +1000 Con Kolivas <kernel@kolivas.org> 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
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next prev parent reply other threads:[~2004-08-27 1:14 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-26 8:47 2.6.9-rc1-mm1 Andrew Morton
2004-08-26 11:07 ` 2.6.9-rc1-mm1 Con Kolivas
2004-08-26 14:28 ` 2.6.9-rc1-mm1 Jurriaan
2004-08-26 18:25 ` 2.6.9-rc1-mm1 Thomas Davis
2004-08-26 14:36 ` 2.6.9-rc1-mm1 Rafael J. Wysocki
2004-08-26 14:45 ` 2.6.9-rc1-mm1 Felipe Alfaro Solana
2004-08-26 15:35 ` 2.6.9-rc1-mm1 Rafael J. Wysocki
2004-08-26 16:38 ` 2.6.9-rc1-mm1 Con Kolivas
2004-08-26 20:36 ` 2.6.9-rc1-mm1 Rafael J. Wysocki
2004-08-26 20:55 ` 2.6.9-rc1-mm1 Martin J. Bligh
2004-08-26 23:19 ` 2.6.9-rc1-mm1 Con Kolivas
2004-08-26 23:43 ` 2.6.9-rc1-mm1 Martin J. Bligh
2004-08-27 0:37 ` 2.6.9-rc1-mm1 Nuno Silva
2004-08-27 0:46 ` 2.6.9-rc1-mm1 Con Kolivas
2004-08-27 0:51 ` 2.6.9-rc1-mm1 Martin J. Bligh
2004-08-27 0:55 ` Con Kolivas [this message]
2004-08-27 0:58 ` 2.6.9-rc1-mm1 Rick Lindsley
2004-08-27 20:54 ` 2.6.9-rc1-mm1 Rafael J. Wysocki
2004-08-27 21:54 ` 2.6.9-rc1-mm1 Rick Lindsley
2004-08-27 22:29 ` 2.6.9-rc1-mm1 Rafael J. Wysocki
2004-09-03 21:11 ` schedstat-2.6.8.1 [was: Re: 2.6.9-rc1-mm1] Rafael J. Wysocki
2004-09-08 7:09 ` Rick Lindsley
2004-09-04 18:35 ` 2.6.9-rc1-mm1 Rafael J. Wysocki
2004-09-08 8:10 ` 2.6.9-rc1-mm1 Rick Lindsley
2004-09-04 23:10 ` latency.c [was: Re: 2.6.9-rc1-mm1] Rafael J. Wysocki
2004-09-08 8:12 ` Rick Lindsley
2004-09-08 12:02 ` Rafael J. Wysocki
2004-08-26 20:51 ` 2.6.9-rc1-mm1 Martin J. Bligh
2004-08-27 1:43 ` 2.6.9-rc1-mm1 Nick Piggin
2004-08-26 12:06 ` 2.6.9-rc1-mm1 Denis Vlasenko
2004-08-26 19:40 ` 2.6.9-rc1-mm1 Sam Ravnborg
2004-08-26 17:58 ` 2.6.9-rc1-mm1 (compile stats) John Cherry
2004-08-26 18:53 ` 2.6.9-rc1-mm1 - undefined references - [PATCH] Paolo Ornati
2004-08-28 8:54 ` Adrian Bunk
2004-08-28 9:45 ` Paolo Ornati
2004-08-26 22:46 ` 2.6.9-rc1-mm1 Rafael J. Wysocki
2004-08-26 22:50 ` 2.6.9-rc1-mm1 Andrew Morton
2004-08-26 23:53 ` 2.6.9-rc1-mm1 Tomasz Torcz
[not found] ` <20040827043132.GJ2793@holomorphy.com>
2004-08-27 21:42 ` 2.6.9-rc1-mm1 William Lee Irwin III
2004-08-28 5:26 ` [0/4] standardized waitqueue hashing William Lee Irwin III
2004-08-28 5:31 ` [1/4] standardize bit waiting data type William Lee Irwin III
2004-08-28 5:35 ` [2/4] consolidate bit waiting code patterns William Lee Irwin III
2004-08-28 5:37 ` [3/4] eliminate bh waitqueue hashtable William Lee Irwin III
2004-08-28 5:38 ` [4/4] eliminate inode " William Lee Irwin III
2004-08-28 6:17 ` [1/4] standardize bit waiting data type Andrew Morton
2004-08-28 6:34 ` William Lee Irwin III
2004-08-28 6:40 ` Andrew Morton
2004-08-28 6:48 ` William Lee Irwin III
2004-08-28 9:20 ` William Lee Irwin III
2004-08-28 9:22 ` [2/4] consolidate bit waiting code patterns William Lee Irwin III
2004-08-28 9:23 ` [3/4] eliminate bh waitqueue hashtable William Lee Irwin III
2004-08-28 9:24 ` [4/4] eliminate inode " William Lee Irwin III
2004-08-28 9:43 ` [3/4] eliminate bh " Andrew Morton
2004-08-28 9:34 ` [2/4] consolidate bit waiting code patterns Andrew Morton
2004-08-28 9:51 ` William Lee Irwin III
2004-08-28 9:39 ` Andrew Morton
2004-08-28 9:51 ` William Lee Irwin III
2004-08-28 9:18 ` [1/4] standardize bit waiting data type Christoph Hellwig
2004-08-28 9:20 ` William Lee Irwin III
2004-08-28 9:06 ` [patch] 2.6.9-rc1-mm1: megaraid_mbox.c compile error with gcc 3.4 Adrian Bunk
-- strict thread matches above, loose matches on Subject: below --
2004-08-28 14:14 2.6.9-rc1-mm1 Sid Boyce
2004-08-28 15:22 ` 2.6.9-rc1-mm1 Hugh Dickins
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