linux-kernel - Re: [RFC, PATCH 1/3] introduce SYS_CLONE

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Message-ID: <20070409145204.GB20130@lnx-holt.americas.sgi.com>
Date:	Mon, 9 Apr 2007 09:52:04 -0500
From:	Robin Holt <holt@....com>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	Robin Holt <holt@....com>, Oleg Nesterov <oleg@...sign.ru>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Davide Libenzi <davidel@...ilserver.org>,
	Ingo Molnar <mingo@...e.hu>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Roland McGrath <roland@...hat.com>,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Subject: Re: [RFC, PATCH 1/3] introduce SYS_CLONE_MASK

On Mon, Apr 09, 2007 at 08:36:21AM -0600, Eric W. Biederman wrote:
> Robin Holt <holt@....com> writes:
> 
> > I would say this is more a benefit than a problem.  With a couple of these
> > systems we are testing, the number of kernel threads is far greater than
> > the number of user processes and having pstree not normally show them, but
> > maybe have an option we add later to show them again would be beneficial.
> 
> Sure.
> 
> Robin how many kernel thread per cpu are you seeing?

10.

FYI, pid 1539 is kthread.

a01:~ # ps -ef | egrep "\[.*\/255\]" 
root       512     1  0 Apr08 ?        00:00:00 [migration/255]
root       513     1  0 Apr08 ?        00:00:00 [ksoftirqd/255]
root      1281     1  0 Apr08 ?        00:00:02 [events/255]
root      2435  1539  0 Apr08 ?        00:00:00 [kblockd/255]
root      3159  1539  0 Apr08 ?        00:00:00 [aio/255]
root      4007  1539  0 Apr08 ?        00:00:00 [cqueue/255]
root      8653  1539  0 Apr08 ?        00:00:00 [ata/255]
root     17438  1539  0 Apr08 ?        00:00:00 [xfslogd/255]
root     17950  1539  0 Apr08 ?        00:00:00 [xfsdatad/255]
root     18426  1539  0 Apr08 ?        00:00:00 [rpciod/255]


Thanks,
Robin
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