From: Christoph Hellwig <hch@infradead.org>
To: Howard Chu <hyc@symas.com>
Cc: linux-kernel <linux-kernel@vger.kernel.org>, linux-mm@kvack.org
Subject: Re: swap map
Date: Tue, 30 Jan 2007 11:20:24 +0000 [thread overview]
Message-ID: <20070130112024.GA18705@infradead.org> (raw)
In-Reply-To: <45BF2823.2090005@symas.com>
On Tue, Jan 30, 2007 at 03:12:35AM -0800, Howard Chu wrote:
> In the it-would-be-nice department... While I was twiddling with swappiness
> and benchmarking some code, I thought it would be pretty cool if there was
> a node in /proc/<pid> that would show which pages of a process are resident
> or nonresident. I'm not sure that it would be useful very often, but I was
> thinking one could get a snapshot of that, correlated with traces from a
> malloc profiler, to show what portions of a program's memory usage was in
> active use vs idle.
That's be a remote mincore(). This should be more or less trivial,
do_mincore would need a mm_struct argument instead of always using
current->mm and we'd need a simple seq_file interface iterating over it.
Any volunteers?
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@infradead.org>
To: Howard Chu <hyc@symas.com>
Cc: linux-kernel <linux-kernel@vger.kernel.org>, linux-mm@kvack.org
Subject: Re: swap map
Date: Tue, 30 Jan 2007 11:20:24 +0000 [thread overview]
Message-ID: <20070130112024.GA18705@infradead.org> (raw)
In-Reply-To: <45BF2823.2090005@symas.com>
On Tue, Jan 30, 2007 at 03:12:35AM -0800, Howard Chu wrote:
> In the it-would-be-nice department... While I was twiddling with swappiness
> and benchmarking some code, I thought it would be pretty cool if there was
> a node in /proc/<pid> that would show which pages of a process are resident
> or nonresident. I'm not sure that it would be useful very often, but I was
> thinking one could get a snapshot of that, correlated with traces from a
> malloc profiler, to show what portions of a program's memory usage was in
> active use vs idle.
That's be a remote mincore(). This should be more or less trivial,
do_mincore would need a mm_struct argument instead of always using
current->mm and we'd need a simple seq_file interface iterating over it.
Any volunteers?
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next prev parent reply other threads:[~2007-01-30 11:20 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-30 11:12 swap map Howard Chu
2007-01-30 11:20 ` Christoph Hellwig [this message]
2007-01-30 11:20 ` Christoph Hellwig
2007-01-30 11:33 ` Nick Piggin
2007-01-30 11:33 ` Nick Piggin
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