From: "Niels Christiansen" <nchr@us.ibm.com>
To: linux-ia64@vger.kernel.org
Subject: Re: [Linux-ia64] What's taking all the system time..?
Date: Wed, 30 Jan 2002 07:27:46 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590698805958@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590698805950@msgid-missing>
Oops, forgot to mention these two lines. They represent trace
overhead because my kernel is instrumented to trace all function
entry and exit points. All it means is that 9.92 + 9.33 percent
of the time spent in your process is trace overhead. It should
not skew the relative weight of the other profile data.
4696 9.92 2.38 kernel __cyg_profile_func_enter []
4416 9.33 2.24 kernel __cyg_profile_func_exit []
I also checked lock stats. You wait for and hold locks less
than 150 msecs. What I can't explain is why the system is 60%
busy (although I know that ACPI handlers keep one processor
100% busy).
-----------------------------------------------------------------
LTC Whydle Version 1.0.3 *** PROCESSOR TIME DISTRIBUTION
-----------------------------------------------------------------
Total TID-0 Other non-IRQ
CPU Idle % Busy % IRQ % IRQ % Busy %
--- ------- ------- ------- ------- -------
0 62.649 37.351 0.000 0.000 37.351
1 43.502 56.498 0.000 0.000 56.498
2 0.000 100.000 0.000 0.000 100.000
3 55.906 44.094 0.000 0.000 44.094
------- ------- ------- ------- -------
40.514 59.486 0.000 0.000 59.486
... Niels
next prev parent reply other threads:[~2002-01-30 7:27 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-01-30 5:48 [Linux-ia64] What's taking all the system time..? Duraid Madina
2002-01-30 6:21 ` Stephane Eranian
2002-01-30 6:26 ` Niels Christiansen
2002-01-30 6:44 ` duraid
2002-01-30 6:46 ` duraid
2002-01-30 6:54 ` Stephane Eranian
2002-01-30 6:58 ` Niels Christiansen
2002-01-30 7:02 ` Niels Christiansen
2002-01-30 7:27 ` Niels Christiansen [this message]
2002-01-30 9:36 ` duraid
2002-01-30 10:04 ` [Linux-ia64] What's taking all the system time..? The unaligned accesses are! Duraid Madina
2002-01-30 17:43 ` [Linux-ia64] What's taking all the system time..? Boehm, Hans
2002-01-30 17:49 ` Grant Grundler
2002-01-30 18:04 ` Niels Christiansen
2002-01-30 21:57 ` Jim Wilson
2002-02-01 21:28 ` David Mosberger
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