linux-kernel - Re: [PATCH 1/3] taskstats-fork: Add a new taskstats command to get notification on fork/clone

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Message-ID: <3d8471ca0908301252j15cb33b1j913921bd8fc6704c@mail.gmail.com>
Date:	Sun, 30 Aug 2009 21:52:22 +0200
From:	Guillaume Chazarain <guichaz@...il.com>
To:	Nikanth Karthikesan <knikanth@...e.de>
Cc:	balbir@...ux.vnet.ibm.com, linux-kernel@...r.kernel.org,
	procps-feedback@...ts.sf.net, Albert Cahalan <albert@...rs.sf.net>
Subject: Re: [PATCH 1/3] taskstats-fork: Add a new taskstats command to get 
	notification on fork/clone

On Tue, Jul 21, 2009 at 8:24 AM, Nikanth Karthikesan<knikanth@...e.de> wrote:
> Ah.. proc-events was the exact thing, I was looking for! Thanks.

AFAICT proc-events can only be used by root, so that makes it
unsuitable for *top.

Anyway, iotop will always have to iterate over all threads to query
their taskstats and other attributes, so the O(nr_threads) complexity
is unavoidable.

Thanks.

-- 
Guillaume
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