linux-kernel - Performance Events hangs with Intel P4 system

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Date:	Fri, 14 May 2010 03:47:55 +0530
From:	Jaswinder Singh Rajput <jaswinderlinux@...il.com>
To:	Cyrill Gorcunov <gorcunov@...il.com>, Ingo Molnar <mingo@...e.hu>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Performance Events hangs with Intel P4 system

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.
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