From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andi Kleen Subject: Re: Cost in sym vs. sym@plt Date: Wed, 31 Aug 2016 09:51:06 -0700 Message-ID: <8760qgrif9.fsf@tassilo.jf.intel.com> References: <2472727.a3qg7mcsuX@milian-kdab2> Mime-Version: 1.0 Content-Type: text/plain Return-path: Received: from mga01.intel.com ([192.55.52.88]:38976 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935292AbcHaQvg (ORCPT ); Wed, 31 Aug 2016 12:51:36 -0400 In-Reply-To: <2472727.a3qg7mcsuX@milian-kdab2> (Milian Wolff's message of "Tue, 30 Aug 2016 13:54:53 +0200") Sender: linux-perf-users-owner@vger.kernel.org List-ID: Cc: linux-perf-users@vger.kernel.org Milian Wolff writes: > > I'm asking, because I did not expect the cost of the @plt to be that large. Is > this maybe due to skid? I doubt that, since the above is from a cycles:ppp > profile on an Intel Haswell i5, which is supposedly accurate. There's no such thing as fully accurate profiling. -Andi