| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20070803030436.GO11166@waste.org> Date: Thu, 2 Aug 2007 22:04:36 -0500 From: Matt Mackall <mpm@...enic.com> To: Ingo Molnar <mingo@...e.hu> Cc: Roman Zippel <zippel@...ux-m68k.org>, Mike Galbraith <efault@....de>, Linus Torvalds <torvalds@...ux-foundation.org>, Andrew Morton <akpm@...ux-foundation.org>, linux-kernel@...r.kernel.org Subject: Re: CFS review On Wed, Aug 01, 2007 at 01:22:29PM +0200, Ingo Molnar wrote: > > * Roman Zippel <zippel@...ux-m68k.org> wrote: > > > [...] e.g. in this example there are three tasks that run only for > > about 1ms every 3ms, but they get far more time than should have > > gotten fairly: > > > > 4544 roman 20 0 1796 520 432 S 32.1 0.4 0:21.08 lt > > 4545 roman 20 0 1796 344 256 R 32.1 0.3 0:21.07 lt > > 4546 roman 20 0 1796 344 256 R 31.7 0.3 0:21.07 lt > > 4547 roman 20 0 1532 272 216 R 3.3 0.2 0:01.94 l > > Mike and me have managed to reproduce similarly looking 'top' output, > but it takes some effort: we had to deliberately run a non-TSC > sched_clock(), CONFIG_HZ=100, !CONFIG_NO_HZ and !CONFIG_HIGH_RES_TIMERS. ..which is pretty much the state of play for lots of non-x86 hardware. -- Mathematics is the supreme nostalgia of our time. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists