From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lb0-f178.google.com (mail-lb0-f178.google.com [209.85.217.178]) by kanga.kvack.org (Postfix) with ESMTP id 813526B0038 for ; Mon, 24 Aug 2015 04:39:23 -0400 (EDT) Received: by lbbpu9 with SMTP id pu9so75275494lbb.3 for ; Mon, 24 Aug 2015 01:39:22 -0700 (PDT) Received: from mail-la0-x229.google.com (mail-la0-x229.google.com. [2a00:1450:4010:c03::229]) by mx.google.com with ESMTPS id h6si12581099lbz.7.2015.08.24.01.39.20 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 24 Aug 2015 01:39:21 -0700 (PDT) Received: by labia3 with SMTP id ia3so8288149lab.3 for ; Mon, 24 Aug 2015 01:39:20 -0700 (PDT) From: Rasmus Villemoes Subject: Re: [PATCH 3/3 v3] mm/vmalloc: Cache the vmalloc memory info References: <20150823060443.GA9882@gmail.com> <20150823064603.14050.qmail@ns.horizon.com> <20150823081750.GA28349@gmail.com> <87lhd1wwtz.fsf@rasmusvillemoes.dk> <20150824065809.GA13082@gmail.com> Date: Mon, 24 Aug 2015 10:39:17 +0200 In-Reply-To: <20150824065809.GA13082@gmail.com> (Ingo Molnar's message of "Mon, 24 Aug 2015 08:58:09 +0200") Message-ID: <877fol5bd6.fsf@rasmusvillemoes.dk> MIME-Version: 1.0 Content-Type: text/plain Sender: owner-linux-mm@kvack.org List-ID: To: Ingo Molnar Cc: George Spelvin , dave@sr71.net, linux-kernel@vger.kernel.org, linux-mm@kvack.org, peterz@infradead.org, riel@redhat.com, rientjes@google.com, torvalds@linux-foundation.org On Mon, Aug 24 2015, Ingo Molnar 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. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org