Date: Tue, 26 Jan 2016 08:57:29 -0600 (CST) From: Christoph Lameter <cl@...ux.com> To: Laura Abbott <labbott@...oraproject.org> cc: Pekka Enberg <penberg@...nel.org>, David Rientjes <rientjes@...gle.com>, Joonsoo Kim <js1304@...il.com>, Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org, linux-kernel@...r.kernel.org, kernel-hardening@...ts.openwall.com, Kees Cook <keescook@...omium.org> Subject: Re: [RFC][PATCH 0/3] Speed up SLUB poisoning + disable checks On Mon, 25 Jan 2016, Laura Abbott wrote: > slub_debug=-: 7.437 > slub_debug=-: 7.932 So thats an almost 10% performance regression if the feature is not used. The reason that posoning is on the slow path is because it is impacting performance. Focus on optimizing the debug path without impacting the fast path please.
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