From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx175.postini.com [74.125.245.175]) by kanga.kvack.org (Postfix) with SMTP id AB9656B002B for ; Thu, 11 Oct 2012 19:11:13 -0400 (EDT) From: Andi Kleen Subject: Re: [Q] Default SLAB allocator References: Date: Thu, 11 Oct 2012 16:10:40 -0700 In-Reply-To: (David Rientjes's message of "Thu, 11 Oct 2012 15:59:19 -0700 (PDT)") Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-linux-mm@kvack.org List-ID: To: David Rientjes Cc: Ezequiel Garcia , Linux Kernel Mailing List , linux-mm@kvack.org, Tim Bird , celinux-dev@lists.celinuxforum.org David Rientjes writes: > On Thu, 11 Oct 2012, Andi Kleen wrote: > >> > While I've always thought SLUB was the default and recommended allocator, >> > I'm surprise to find that it's not always the case: >> >> iirc the main performance reasons for slab over slub have mostly >> disappeared, so in theory slab could be finally deprecated now. >> > > SLUB is a non-starter for us and incurs a >10% performance degradation in > netperf TCP_RR. When did you last test? Our regressions had disappeared a few kernels ago. -Andi -- ak@linux.intel.com -- Speaking for myself only -- 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