From owner-freebsd-performance@FreeBSD.ORG  Tue Apr 17 19:17:05 2012
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Date: Tue, 17 Apr 2012 12:17:04 -0700
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From: Adrian Chadd <adrian@freebsd.org>
To: Richard Kojedzinszky <krichy@tvnetwork.hu>
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Cc: Garrett Cooper <yanegomi@gmail.com>, freebsd-security@freebsd.org,
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Subject: Re: ufs multilabel performance (fwd)
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On 16 April 2012 23:31, Richard Kojedzinszky <krichy@tvnetwork.hu> wrote:
>
> So now reactions here, creating files with multilabel is still slow.
>
> I would like to use multilabel access control on my /tmp, for example, my
> web server places it's session files there in a subdirectory. Of course, I
> would like to assign a label for that subdir, but with this slow file
> creation, that is not the way to go. I may then use a different filesystem
> for that. In this case, can I assign a root mac label for a mount point?

Hi,

This is a perfect job for hwpmc / dtrace.

Would you be able to load up either of those and get some CPU usage
statistics whilst you're running your benchmark?

It's either that, or it's (massive) locking contention.


Adrian