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

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Message-ID: <m18xd13996.fsf@ebiederm.dsl.xmission.com>
Date:	Mon, 09 Apr 2007 08:36:21 -0600
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Robin Holt <holt@....com>
Cc:	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

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?

I don't know that we have a problem in this regard but it feels like
you are seeing a lot more kernel threads per cpu than I would expect
from looking at small systems.

I am wondering if somewhere we are using per cpu kernel threads when
we should not be...

Eric
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