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 PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Mon, 13 Nov 2006 17:03:14 -0700 From: ebiederm@...ssion.com (Eric W. Biederman) To: tim.c.chen@...ux.intel.com Cc: Adrian Bunk <bunk@...sta.de>, Linus Torvalds <torvalds@...l.org>, Andrew Morton <akpm@...l.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: 2.6.19-rc5: known regressions Tim Chen <tim.c.chen@...ux.intel.com> writes: > On Wed, 2006-11-08 at 22:10 -0700, Eric W. Biederman wrote: > >> >> Cool. I'm glad to know it was simply a buggy lmbench. >> >> What is sysconf(_SN_NPROCESSORS_ONLN) doing that it slows down as the >> number of irqs increase? It is a slow path certainly but possibly >> something we should fix. My hunch is cat /proc/cpuinfo... >> > > The increase in time of sysconf(_SN_NPROCESSORS_ONLN) call > is within "show_stat" function after looking at profiling data. > There are a couple of loops that iterate over kstat_irqs > interrupt statistics and depend on NR_IRQS. Doesn't > look like something we need to fix. Thanks. Eric - 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