linux-kernel - Re: init's children list is long and slows reaping children.

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

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 10 Apr 2007 02:53:38 -0400
From:	Jeff Garzik <jeff@...zik.org>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Robin Holt <holt@....com>, Ingo Molnar <mingo@...e.hu>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	Jack Steiner <steiner@...ricas.sgi.com>
Subject: Re: init's children list is long and slows reaping children.

Eric W. Biederman wrote:
> At 10 kernel threads per cpu there may be a little bloat but it isn't
> out of control.  It is mostly that we are observing the kernel as
> NR_CPUS approaches infinity.  4096 isn't infinity yet but it's easily
> a 1000 fold bigger then most people are used to :)


I disagree there is only a little bloat:  the current mechanism in place 
does not scale as NR_CPUS increases, as this thread demonstrates.

Beyond a certain point, on an 8-CPU box, it gets silly.  You certainly 
don't need eight kblockd threads or eight ata threads.

	Jeff


-
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/