linux-kernel - Re: [PATCH 3/3 v3] mm/vmalloc: Cache the vmalloc memory info

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Message-ID: <877fol5bd6.fsf@rasmusvillemoes.dk>
Date:	Mon, 24 Aug 2015 10:39:17 +0200
From:	Rasmus Villemoes <linux@...musvillemoes.dk>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	George Spelvin <linux@...izon.com>, dave@...1.net,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	peterz@...radead.org, riel@...hat.com, rientjes@...gle.com,
	torvalds@...ux-foundation.org
Subject: Re: [PATCH 3/3 v3] mm/vmalloc: Cache the vmalloc memory info

On Mon, Aug 24 2015, Ingo Molnar <mingo@...nel.org> wrote:

>
> Thanks, is the fixed up changelog below better?
>

Yes, though Linus specifically referred to "make test" (but I guess one
could/should consider that part of the build process).

Rasmus


> mm/vmalloc: Cache the vmalloc memory info
>
> Linus reported that for scripting-intense workloads such as the
> Git build, glibc's qsort will read /proc/meminfo for every process
> created (by way of get_phys_pages()), which causes the Git build 
> to generate a surprising amount of kernel overhead.
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