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Message-ID: <AANLkTimCjt0R7A23xTrmToTqTcF4ZW4sNWtjMwjVIVqe@mail.gmail.com> Date: Fri, 14 May 2010 09:55:12 +0530 From: Jaswinder Singh Rajput <jaswinderlinux@...il.com> To: Cyrill Gorcunov <gorcunov@...il.com> Cc: Ingo Molnar <mingo@...e.hu>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: Performance Events hangs with Intel P4 system Hello Cyrill, On Fri, May 14, 2010 at 8:49 AM, Cyrill Gorcunov <gorcunov@...il.com> wrote: > On Friday, May 14, 2010, Jaswinder Singh Rajput > <jaswinderlinux@...il.com> wrote: >> Hello, >> >> I am testing Performance Events on P4 with HT: >> >> [ 0.002243] Performance Events: Netburst events, Netburst P4/Xeon PMU driver. >> [ 0.002432] ... version: 0 >> [ 0.002545] ... bit width: 40 >> [ 0.002659] ... generic registers: 18 >> [ 0.002772] ... value mask: 000000ffffffffff >> [ 0.002887] ... max period: 0000007fffffffff >> [ 0.003004] ... fixed-purpose events: 0 >> [ 0.003118] ... event mask: 000000000003ffff >> >> dmesg : http://userweb.kernel.org/~jaswinder/P4_HT/dmesg-2634-rc7-tip.txt >> config : http://userweb.kernel.org/~jaswinder/P4_HT/config-2634-rc7-tip.txt >> >> [jaswinder@ht perf]$ ./perf stat -e cycles ls > /dev/null >> >> Performance counter stats for 'ls': >> >> <not counted> cycles >> >> 0.003447053 seconds time elapsed >> >> [jaswinder@ht perf]$ ./perf stat -e cycles,instructions ls > /dev/null >> >> Performance counter stats for 'ls': >> >> <not counted> cycles >> 1862188 instructions # 0.000 IPC (scaled >> from 54.91%) >> >> 0.003419230 seconds time elapsed >> >> [jaswinder@ht perf]$ ./perf stat -e >> cycles,instructions,cache-references ls > /dev/null >> >> <<this dumps on screen and hangs the systems>> >> >> How can I fix this problem. >> >> Thanks, >> -- >> Jaswinder Singh. >> > > thanks for testing. Is there any issue in dmesg for first two perf > calls before it hangs? There is no issue in dmesg for first two perf calls. > And is there a chance for screen dump (photo or > netconsole)? > Here is netconsole : [jaswinder@ht perf]$ ./perf stat -e cycles,instructions,cache-references ls > /dev/null Message from syslogd@ht at May 14 09:39:32 ... kernel:[ 314.908284] general protection fault: 0000 [#1] PREEMPT SMP Message from syslogd@ht at May 14 09:39:32 ... kernel:[ 314.908296] last sysfs file: /sys/class/net/eth1/statistics/collisions Message from syslogd@ht at May 14 09:39:32 ... kernel:[ 314.908346] Process ls (pid: 2726, ti=edac2000 task=ed9eb240 task.ti=edac2000) Message from syslogd@ht at May 14 09:39:32 ... kernel:[ 314.908349] Stack: Message from syslogd@ht at May 14 09:39:32 ... kernel:[ 314.908387] Call Trace: Message from syslogd@ht at May 14 09:39:32 ... kernel:[ 314.908549] Code: cb 89 d1 e8 89 c7 13 00 8b 75 dc 8b 45 e4 8b 55 d0 23 15 68 37 58 c1 8b b6 c4 00 00 00 01 75 f0 f7 d8 8b 4d f0 23 05 64 37 58 c1 <0f> 30 8b 45 dc e8 a4 63 06 00 8b 45 ec 83 c4 30 5b 5e 5f 5d c3 Message from syslogd@ht at May 14 09:39:32 ... kernel:[ 314.908612] EIP: [<c100ccca>] x86_perf_event_set_period+0x19d/0x1b2 SS:ESP 0068:edac3d70 If you need more information, please let me know. Thanks, -- Jaswinder Singh. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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