From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 31827 invoked by alias); 15 Jan 2008 20:06:32 -0000 Received: (qmail 31743 invoked by uid 48); 15 Jan 2008 20:05:49 -0000 Date: Tue, 15 Jan 2008 20:06:00 -0000 Message-ID: <20080115200549.31742.qmail@sourceware.org> From: "wcohen at redhat dot com" To: systemtap@sources.redhat.com In-Reply-To: <20071003062709.5094.srinivasa@in.ibm.com> References: <20071003062709.5094.srinivasa@in.ibm.com> Reply-To: sourceware-bugzilla@sourceware.org Subject: [Bug testsuite/5094] gtod.exp fails on ppc64 X-Bugzilla-Reason: AssignedTo Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org X-SW-Source: 2008-q1/txt/msg00072.txt.bz2 ------- Additional Comments From wcohen at redhat dot com 2008-01-15 20:05 ------- I noticed a similar failure on an i686 machine running a stock kernel, 2.6.18-53.1.4EL with the current stap_snap_testing (20080112). The gtod.exp test has the following matching: -re {^[0-9]+ \:([0-9]+) appl\r\n[0-9]+ \:\1 kern\r\n[0-9]+ \:\1 prog\r\n} { incr ok; exp_continue } the \1 before "kern" and "prog" expect need something like the following to match: 1200411986605858 :00 appl 1200411986605862 :00 kern 1200411986605873 :00 prog However, there are places in the output where the number entries are not grouped together (notice the 78 before the last 77 and the 79 between the 78's): 1200411986606250 :77 kern 1200411986606252 :77 appl 1200411986606255 :78 kern 1200411986606256 :77 prog 1200411986606257 :78 appl 1200411986606260 :79 kern 1200411986606261 :78 prog 1200411986606262 :79 appl 1200411986606265 :79 prog It appears that the get_time_of_day is not being monotonic. The particular i686 machine was a laptop, which could have changes in the clock frequency. I wonder if the hypervisor on the ppc64 could be skewing the results. -- http://sourceware.org/bugzilla/show_bug.cgi?id=5094 ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee.