From: Mark_H_Johnson@raytheon.com
To: Ingo Molnar <mingo@elte.hu>
Cc: Amit Shah <amit.shah@codito.com>,
Karsten Wiese <annabellesgarden@yahoo.de>,
Bill Huey <bhuey@lnxw.com>, Adam Heath <doogie@debian.org>,
emann@mrv.com, Gunther Persoons <gunther_persoons@spymac.com>,
"K.R. Foley" <kr@cybsft.com>,
linux-kernel@vger.kernel.org,
Florian Schmidt <mista.tapas@gmx.net>,
Fernando Pablo Lopez-Lezcano <nando@ccrma.Stanford.EDU>,
Lee Revell <rlrevell@joe-job.com>,
Rui Nuno Capela <rncbc@rncbc.org>,
Shane Shrybman <shrybman@aei.ca>,
Esben Nielsen <simlo@phys.au.dk>,
Thomas Gleixner <tglx@linutronix.de>,
Michal Schmidt <xschmi00@stud.feec.vutbr.cz>
Subject: Re: [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm2-V0.7.32-0
Date: Fri, 3 Dec 2004 16:33:20 -0600 [thread overview]
Message-ID: <OFAD4DDF01.33613E58-ON86256F5F.007AE759@raytheon.com> (raw)
Comparison of .32-0 and .31-15 results
within 100 usec
CPU loop (%) Elapsed Time (sec) 2.4
Test 32-0 31-15 32-0 31-15 | CPU Elapsed
X 94.58 99.22 67 68 | 97.20 70
top 95.29 97.96 39 34 | 97.48 29
neto 94.24 99.98 360 360 | 96.23 36
neti 94.83 98.31 360 350 | 95.86 41
diskw 90.77 99.57 360 360 * | 77.64 29
diskc 93.47 97.49 360 360 | 84.12 77
diskr 93.49 98.35 320 180 | 90.66 86
total 1866 1712 | 368
* wide variation in audio duration
Grr. This appears that .32-0 is MUCH WORSE than 31.15 at
keeping the relatively small (100 usec) latencies down.
Probably due to the CPU task switch that prevents the
longer ones from occurring. The MAX CPU latencies are down
in most cases (over 4 msec down to about 3 msec) which
is a good result.
The long elapsed times appear to indicate that we are
starving the "stress test" application (and likely
running the niced, non RT cpu_burn instead).
--Mark H Johnson
<mailto:Mark_H_Johnson@raytheon.com>
next reply other threads:[~2004-12-03 22:34 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-03 22:33 Mark_H_Johnson [this message]
-- strict thread matches above, loose matches on Subject: below --
2004-12-06 15:59 [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm2-V0.7.32-0 Mark_H_Johnson
2004-12-07 14:07 ` Ingo Molnar
2004-12-06 14:40 Mark_H_Johnson
2004-12-06 15:34 ` Ingo Molnar
2004-11-11 21:51 [patch] Real-Time Preemption, -RT-2.6.10-rc1-mm3-V0.7.25-1 Ingo Molnar
2004-11-16 12:54 ` [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm1-V0.7.27-0 Ingo Molnar
2004-11-16 13:09 ` [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm1-V0.7.27-1 Ingo Molnar
2004-11-16 13:40 ` [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm1-V0.7.27-3 Ingo Molnar
2004-11-17 12:42 ` [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm1-V0.7.28-0 Ingo Molnar
2004-11-18 12:35 ` [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm1-V0.7.28-1 Ingo Molnar
2004-11-18 16:46 ` [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm2-V0.7.29-0 Ingo Molnar
2004-11-22 0:54 ` [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm2-V0.7.30-2 Ingo Molnar
2004-11-23 17:58 ` [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm2-V0.7.30-9 Ingo Molnar
2004-11-24 10:16 ` [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm2-V0.7.30-10 Ingo Molnar
2004-12-03 20:58 ` [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm2-V0.7.32-0 Ingo Molnar
2004-12-03 21:04 ` Ingo Molnar
2004-12-04 22:32 ` Rui Nuno Capela
2004-12-04 22:46 ` Ingo Molnar
2004-12-04 23:38 ` Rui Nuno Capela
2004-12-04 23:55 ` K.R. Foley
2004-12-05 3:10 ` Gene Heskett
2004-12-05 3:05 ` Gene Heskett
2004-12-05 23:14 ` Esben Nielsen
2004-12-06 13:14 ` Ingo Molnar
2004-12-06 15:01 ` Esben Nielsen
2004-12-06 15:27 ` Ingo Molnar
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