From mboxrd@z Thu Jan 1 00:00:00 1970 From: Han Pingtian Subject: [BUG] perf kmem: Processed 0 events and LOST 75691! Date: Tue, 2 Aug 2011 11:59:14 +0800 Message-ID: <20110802035914.GA6626@hpt.nay.redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mx1.redhat.com ([209.132.183.28]:4364 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753775Ab1HBD65 (ORCPT ); Mon, 1 Aug 2011 23:58:57 -0400 Content-Disposition: inline Sender: linux-perf-users-owner@vger.kernel.org List-ID: To: linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org Hello, I got this with 3.0 perf, but the running kernel is a old one: [root@hp-dl580g7-01 perf]# ./perf kmem record sleep 1 [ perf record: Woken up 0 times to write data ] [ perf record: Captured and wrote 21.789 MB perf.data (~951977 samples) ] Processed 0 events and LOST 76148! Check IO/CPU overload! [root@hp-dl580g7-01 perf]# ./perf kmem stat Processed 0 events and LOST 76148! Check IO/CPU overload! SUMMARY ======= Total bytes requested: 5725028 Total bytes allocated: 6291512 Total bytes wasted on internal fragmentation: 566484 Internal fragmentation: 9.003941% Cross CPU allocations: 28/84295 Is this a bug? Thanks. -- Han Pingtian Quality Engineer hpt @ #kernel-qe Red Hat, Inc Freedom ... courage ... Commitment ... ACCOUNTABILITY