From owner-freebsd-performance@FreeBSD.ORG Wed Sep 21 05:48:59 2011 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id EAE14106566C for ; Wed, 21 Sep 2011 05:48:59 +0000 (UTC) (envelope-from gofp-freebsd-performance@m.gmane.org) Received: from lo.gmane.org (lo.gmane.org [80.91.229.12]) by mx1.freebsd.org (Postfix) with ESMTP id A78398FC0A for ; Wed, 21 Sep 2011 05:48:59 +0000 (UTC) Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1R6Fg2-0004sR-Le for freebsd-performance@freebsd.org; Wed, 21 Sep 2011 07:48:58 +0200 Received: from 178.214.36.169 ([178.214.36.169]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 21 Sep 2011 07:48:58 +0200 Received: from citrin by 178.214.36.169 with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 21 Sep 2011 07:48:58 +0200 X-Injected-Via-Gmane: http://gmane.org/ To: freebsd-performance@freebsd.org From: Anton Yuzhaninov Date: Wed, 21 Sep 2011 05:48:46 +0000 (UTC) Organization: Vega Lines: 13 Sender: Anton Yuzhaninov Message-ID: References: X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: 178.214.36.169 X-Comment-To: Adrian Chadd User-Agent: tin/1.8.3-20070201 ("Scotasay") (UNIX) (FreeBSD/9.0-BETA2 (i386)) X-Mailman-Approved-At: Wed, 21 Sep 2011 11:14:15 +0000 Subject: Re: hwpmc overflow X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 21 Sep 2011 05:49:00 -0000 On Wed, 21 Sep 2011 09:27:33 +0800, Adrian Chadd wrote: AC> Is this an AMD class CPU? AC> AC> The way the counters work on some platforms is that they count _up_ to AC> an overflow value, trigger the overflow interrupt, and PMC then is AC> supposed to calculate what the original value was. AC> It sounds like maybe that isn't working correctly for a certain class AC> of counters? CPU: Intel(R) Xeon(R) CPU E5645 @ 2.40GHz -- Anton Yuzhaninov