From: "Rafael J. Wysocki" <rjw@rjwysocki.net>
To: Linux PM <linux-pm@vger.kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>,
Viresh Kumar <viresh.kumar@linaro.org>,
Juri Lelli <juri.lelli@arm.com>,
Vincent Guittot <vincent.guittot@linaro.org>,
Patrick Bellasi <patrick.bellasi@arm.com>,
Joel Fernandes <joelaf@google.com>,
Morten Rasmussen <morten.rasmussen@arm.com>,
Ingo Molnar <mingo@redhat.com>
Subject: Re: [RFC][PATCH 2/2] cpufreq: schedutil: Force max frequency on busy CPUs
Date: Sun, 19 Mar 2017 22:24:24 +0100 [thread overview]
Message-ID: <135462462.sTWZ8TCakW@aspire.rjw.lan> (raw)
In-Reply-To: <2185243.flNrap3qq1@aspire.rjw.lan>
[-- Attachment #1: Type: text/plain, Size: 3957 bytes --]
On Sunday, March 19, 2017 02:34:32 PM Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
>
> The PELT metric used by the schedutil governor underestimates the
> CPU utilization in some cases. The reason for that may be time spent
> in interrupt handlers and similar which is not accounted for by PELT.
>
> That can be easily demonstrated by running kernel compilation on
> a Sandy Bridge Intel processor, running turbostat in parallel with
> it and looking at the values written to the MSR_IA32_PERF_CTL
> register. Namely, the expected result would be that when all CPUs
> were 100% busy, all of them would be requested to run in the maximum
> P-state, but observation shows that this clearly isn't the case.
> The CPUs run in the maximum P-state for a while and then are
> requested to run slower and go back to the maximum P-state after
> a while again. That causes the actual frequency of the processor to
> visibly oscillate below the sustainable maximum in a jittery fashion
> which clearly is not desirable.
In case you are wondering about the actual numbers, attached are two turbostat
log files from two runs of the same workload, without (before.txt) and with (after.txt)
the patch applied.
The workload is essentially "make -j 5" in the kernel source tree and the
machine has an SSD storage and a quad-core Intel Sandy Bridge processor.
The P-states available for each core are between 8 and 31 (0x1f) corresponding
to 800 MHz and 3.1 GHz, respectively. All cores can run sustainably at 2.9 GHz
at the same time, although that is not a guaranteed sustainable frequency
(it may be dropped occasionally for thermal reasons, for example).
The interesting columns are Bzy_MHz (and specifically the rows with "-" under
CPU that correspond to the entire processor), which is the avreage frequency
between iterations based on the numbers read from feedback registers, and
the rightmost one, which is the values written to the P-state request register
(the 3rd and 4th hex digits from the right represent the requested P-state).
The turbostat data collection ran every 2 seconds and I looked at the last 30
iterations in each case corresponding to about 1 minute of the workload run
during which all of the cores were around 100% busy.
Now, if you look at after.txt (the run with the patch applied), you'll notice that
during those last 30 iterations P-state 31 (0x1f) had been requested on all
cores pretty much 100% of the time (meaning: as expected in that case) and
the average processor frequency (computed by taking the average from
all of the 30 "-" rows) was 2899.33 MHz (apparently, the hardware decided to
drop it from 2.9 GHz occasionally).
In the before.txt case (without the patch) the average frequency over the last
30 iterations was 2896.90 MHz which is about 0.8% slower than with the patch
applied (on the average). That already is quite a measurable difference, but it
would have been much worse if the processor had not coordinated P-states in
hardware (such that if any core requested 31, the processor would pick that
one or close to it for the entire package regardless of the requests from the
other cores).
Namely, if you look at the P-states requested for different cores (during the last
30 iterations of the before.txt run), which essentially is what should be used
according to the governor, the average of them is 27.25 (almost 4 bins lower
than the maximum) and the standard deviation is 6, so it is not like they are a
little off occasionally. At least some of them are way off most of the time.
Honestly, if the processor had been capable of doing per-core P-states, that
would have been a disaster and there are customers who wouldn't look at
schedutil again after being confronted with these numbers.
So this is rather serious.
BTW, both intel_pstate in the active mode and ondemand request 0x1f on
all cores for that workload, like in the after.txt case.
Thanks,
Rafael
[-- Attachment #2: before.txt --]
[-- Type: text/plain, Size: 15917 bytes --]
CPUID(7): No-SGX
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 93 11.26 826 2494 0x00000000
0 61 7.56 808 2494 0x00000800
2 90 10.87 832 2494 0x00000800
1 130 15.79 822 2494 0x00000800
3 90 10.83 837 2494 0x00000800
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 54 6.63 811 2494 0x00000000
0 46 5.68 816 2494 0x00000800
2 55 6.87 804 2494 0x00000800
1 79 9.77 806 2494 0x00000800
3 35 4.20 828 2494 0x00000800
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 305 36.58 835 2494 0x00000000
0 332 39.69 838 2494 0x00000800
2 307 36.95 833 2494 0x00000800
1 248 29.82 832 2494 0x00000800
3 333 39.87 836 2494 0x00000c00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 357 38.08 940 2495 0x00000000
0 424 36.72 1158 2495 0x00000800
2 312 36.27 862 2495 0x00000800
1 407 46.72 874 2494 0x00000800
3 284 32.62 874 2494 0x00000800
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2017 92.64 2183 2494 0x00000000
0 2041 94.65 2162 2494 0x00000800
2 2032 93.65 2175 2494 0x00001200
1 2024 92.33 2197 2494 0x00001f00
3 1972 89.92 2198 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2455 99.21 2480 2494 0x00000000
0 2450 98.95 2482 2494 0x00000900
2 2457 99.29 2480 2494 0x00000900
1 2453 99.11 2481 2494 0x00001000
3 2461 99.49 2479 2494 0x00000d00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2308 99.14 2333 2494 0x00000000
0 2309 99.04 2337 2494 0x00001f00
2 2307 99.12 2333 2494 0x00001200
1 2305 99.03 2333 2494 0x00001600
3 2310 99.39 2329 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2613 99.22 2639 2494 0x00000000
0 2614 99.32 2638 2494 0x00000800
2 2589 98.19 2643 2494 0x00001200
1 2623 99.60 2640 2494 0x00001800
3 2624 99.76 2637 2494 0x00000a00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2687 98.70 2729 2494 0x00000000
0 2700 99.24 2727 2494 0x00000800
2 2707 99.48 2728 2494 0x00001f00
1 2643 97.09 2728 2494 0x00001c00
3 2699 99.01 2733 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 99.98 2900 2494 0x00000000
0 2892 99.96 2900 2494 0x00001f00
2 2892 99.96 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001b00
2 2893 100.00 2900 2494 0x00001800
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00000800
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001a00
2 2893 100.00 2900 2494 0x00000d00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001900
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2886 100.00 2893 2494 0x00000000
0 2886 100.00 2893 2494 0x00001f00
2 2886 100.00 2893 2494 0x00001f00
1 2886 100.00 2893 2494 0x00001900
3 2886 100.00 2893 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001b00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001c00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001900
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2890 99.99 2897 2494 0x00000000
0 2890 100.00 2897 2494 0x00001f00
2 2890 100.00 2897 2494 0x00001800
1 2890 100.00 2897 2494 0x00000e00
3 2889 99.97 2897 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001600
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2892 100.00 2898 2494 0x00000000
0 2892 100.00 2898 2494 0x00001f00
2 2892 100.00 2898 2494 0x00001f00
1 2892 100.00 2898 2494 0x00000a00
3 2892 100.00 2898 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2890 100.00 2897 2494 0x00000000
0 2890 100.00 2897 2494 0x00001f00
2 2890 100.00 2897 2494 0x00001f00
1 2890 100.00 2897 2494 0x00001b00
3 2890 100.00 2897 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2870 99.94 2878 2494 0x00000000
0 2872 100.00 2878 2494 0x00001f00
2 2867 99.84 2878 2494 0x00001f00
1 2872 100.00 2878 2494 0x00001f00
3 2870 99.92 2879 2494 0x00001200
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2892 100.00 2898 2494 0x00000000
0 2892 100.00 2898 2494 0x00000f00
2 2892 100.00 2898 2494 0x00001b00
1 2892 100.00 2898 2494 0x00001f00
3 2892 100.00 2898 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2891 99.94 2899 2494 0x00000000
0 2893 100.00 2899 2494 0x00001f00
2 2887 99.78 2899 2494 0x00001f00
1 2893 100.00 2899 2494 0x00001f00
3 2893 100.00 2899 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001d00
2 2893 100.00 2900 2494 0x00001c00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2889 100.00 2895 2494 0x00000000
0 2889 100.00 2895 2494 0x00001f00
2 2889 100.00 2895 2494 0x00001600
1 2889 100.00 2895 2494 0x00001c00
3 2889 100.00 2895 2494 0x00000b00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001800
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001600
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00000800
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 99.99 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001200
3 2892 99.96 2900 2494 0x00001300
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2891 99.99 2898 2494 0x00000000
0 2892 100.00 2898 2494 0x00001f00
2 2891 99.97 2898 2494 0x00001f00
1 2892 100.00 2898 2494 0x00001f00
3 2892 100.00 2898 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2892 99.99 2899 2494 0x00000000
0 2892 100.00 2899 2494 0x00001f00
2 2892 100.00 2899 2494 0x00001100
1 2891 99.96 2899 2494 0x00001f00
3 2892 100.00 2899 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2886 100.00 2893 2494 0x00000000
0 2886 100.00 2893 2494 0x00000f00
2 2886 100.00 2893 2494 0x00000900
1 2886 100.00 2893 2494 0x00001300
3 2886 100.00 2893 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2892 100.00 2898 2495 0x00000000
0 2892 100.00 2898 2495 0x00001f00
2 2892 100.00 2898 2495 0x00001700
1 2892 100.00 2898 2494 0x00001f00
3 2892 100.00 2898 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001700
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00000d00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2892 100.00 2899 2494 0x00000000
0 2892 99.98 2899 2494 0x00001f00
2 2892 100.00 2899 2494 0x00001f00
1 2892 100.00 2899 2494 0x00001f00
3 2892 100.00 2899 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2879 100.00 2885 2494 0x00000000
0 2879 100.00 2885 2494 0x00001500
2 2879 100.00 2885 2494 0x00000900
1 2878 99.99 2885 2494 0x00001f00
3 2879 100.00 2885 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2883 100.00 2889 2494 0x00000000
0 2883 100.00 2889 2494 0x00001f00
2 2883 100.00 2889 2494 0x00001f00
1 2883 100.00 2889 2494 0x00001f00
3 2883 100.00 2889 2494 0x00001600
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001400
1 2893 100.00 2900 2494 0x00001b00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001100
2 2893 100.00 2900 2494 0x00001000
1 2893 100.00 2900 2494 0x00001f00
3 2893 99.98 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001300
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001500
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2899 2494 0x00000000
0 2893 100.00 2899 2494 0x00001f00
2 2893 100.00 2899 2494 0x00001c00
1 2893 100.00 2899 2494 0x00001f00
3 2893 100.00 2899 2494 0x00001c00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001b00
3 2893 100.00 2900 2494 0x00001d00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2879 100.00 2886 2494 0x00000000
0 2879 100.00 2886 2494 0x00001200
2 2879 100.00 2886 2494 0x00001f00
1 2879 100.00 2886 2494 0x00001f00
3 2879 100.00 2886 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 99.99 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2892 99.98 2900 2494 0x00001300
3 2893 100.00 2900 2494 0x00001000
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2892 100.00 2898 2495 0x00000000
0 2892 100.00 2898 2495 0x00001f00
2 2892 100.00 2898 2495 0x00000800
1 2892 100.00 2898 2495 0x00001b00
3 2892 100.00 2898 2494 0x00001600
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 99.99 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001b00
1 2892 99.96 2900 2494 0x00001f00
3 2893 99.99 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2891 99.99 2898 2494 0x00000000
0 2892 100.00 2898 2494 0x00001a00
2 2892 100.00 2898 2494 0x00001f00
1 2892 100.00 2898 2494 0x00001f00
3 2890 99.95 2898 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001600
2 2893 100.00 2900 2494 0x00001100
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2892 100.00 2898 2494 0x00000000
0 2892 100.00 2898 2494 0x00001f00
2 2892 100.00 2898 2494 0x00001f00
1 2892 100.00 2898 2494 0x00001f00
3 2892 100.00 2898 2494 0x00001c00
[-- Attachment #3: after.txt --]
[-- Type: text/plain, Size: 18461 bytes --]
CPUID(7): No-SGX
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 171 20.00 854 2496 0x00000000
0 182 21.23 858 2496 0x00000800
2 170 19.93 855 2496 0x00000800
1 173 20.54 845 2496 0x00000800
3 157 18.32 858 2494 0x00000800
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 222 25.57 872 2494 0x00000000
0 210 23.66 889 2494 0x00000800
2 200 23.20 865 2494 0x00000800
1 189 21.33 886 2494 0x00000800
3 291 34.09 856 2494 0x00000800
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 132 16.37 808 2494 0x00000000
0 131 16.19 811 2494 0x00000800
2 215 26.87 801 2494 0x00000800
1 107 13.33 803 2494 0x00000800
3 76 9.08 834 2494 0x00000800
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 503 47.44 1063 2494 0x00000000
0 510 48.60 1051 2494 0x00000a00
2 482 45.17 1070 2494 0x00000800
1 512 48.94 1048 2494 0x00000a00
3 508 47.06 1082 2494 0x00000800
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 447 40.48 1108 2494 0x00000000
0 444 39.85 1117 2494 0x00000800
2 422 38.66 1093 2494 0x00000a00
1 440 38.68 1140 2494 0x00000800
3 484 44.75 1084 2494 0x00000a00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 405 34.24 1185 2494 0x00000000
0 422 33.63 1258 2494 0x00000800
2 435 35.97 1211 2494 0x00000800
1 296 26.52 1118 2494 0x00000800
3 468 40.85 1147 2494 0x00000800
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 155 19.07 813 2494 0x00000000
0 161 19.92 809 2494 0x00000800
2 156 19.31 810 2494 0x00000800
1 119 14.79 809 2494 0x00000800
3 183 22.26 823 2494 0x00000800
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 632 36.32 1744 2494 0x00000000
0 1237 58.35 2125 2494 0x00001f00
2 503 31.16 1617 2494 0x00000800
1 396 28.29 1403 2494 0x00000800
3 392 27.50 1430 2494 0x00000800
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 799 36.92 2168 2494 0x00000000
0 1935 77.42 2505 2494 0x00000800
2 386 22.32 1733 2494 0x00000800
1 474 25.39 1870 2494 0x00000800
3 400 22.53 1778 2494 0x00000800
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 1856 82.07 2267 2494 0x00000000
0 1850 82.38 2251 2494 0x00000900
2 1836 81.44 2260 2494 0x00001500
1 1850 80.66 2299 2494 0x00001700
3 1889 83.80 2259 2494 0x00000a00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2601 95.10 2741 2494 0x00000000
0 2625 96.00 2740 2494 0x00001200
2 2573 93.94 2746 2494 0x00001000
1 2635 96.58 2734 2494 0x00000c00
3 2570 93.87 2744 2494 0x00000b00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2488 92.91 2684 2494 0x00000000
0 2475 92.17 2692 2494 0x00000b00
2 2525 94.49 2678 2494 0x00001c00
1 2506 93.54 2685 2494 0x00001f00
3 2446 91.43 2682 2494 0x00000800
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2508 94.52 2659 2494 0x00000000
0 2551 96.11 2661 2494 0x00001200
2 2525 95.10 2661 2494 0x00001f00
1 2531 95.48 2657 2494 0x00001f00
3 2423 91.40 2657 2494 0x00001400
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2616 94.99 2760 2494 0x00000000
0 2577 93.80 2754 2494 0x00001f00
2 2653 96.61 2753 2494 0x00001f00
1 2606 94.38 2767 2494 0x00001f00
3 2626 95.17 2765 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2851 98.63 2897 2494 0x00000000
0 2823 97.66 2897 2494 0x00000f00
2 2854 98.71 2898 2494 0x00001600
1 2881 99.69 2897 2494 0x00001f00
3 2845 98.44 2897 2494 0x00001900
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2871 99.23 2900 2494 0x00000000
0 2884 99.68 2900 2494 0x00001900
2 2868 99.11 2900 2494 0x00001f00
1 2875 99.35 2900 2494 0x00001f00
3 2858 98.78 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2892 99.96 2900 2494 0x00000000
0 2893 99.97 2900 2494 0x00001f00
2 2892 99.93 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2892 99.94 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 99.99 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 99.97 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2892 100.00 2898 2494 0x00000000
0 2892 100.00 2898 2494 0x00001f00
2 2892 100.00 2898 2494 0x00001f00
1 2892 100.00 2898 2494 0x00001f00
3 2892 100.00 2898 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 99.99 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 99.97 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2892 100.00 2898 2494 0x00000000
0 2892 100.00 2898 2494 0x00001f00
2 2892 100.00 2898 2494 0x00001f00
1 2892 100.00 2898 2494 0x00001f00
3 2892 100.00 2898 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 99.99 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 99.98 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2892 100.00 2898 2495 0x00000000
0 2892 100.00 2898 2495 0x00001f00
2 2892 100.00 2898 2495 0x00001f00
1 2892 100.00 2898 2495 0x00001f00
3 2892 100.00 2898 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2892 100.00 2898 2494 0x00000000
0 2892 100.00 2898 2494 0x00001f00
2 2892 100.00 2898 2494 0x00001f00
1 2892 100.00 2898 2494 0x00001f00
3 2892 100.00 2898 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 99.99 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2892 99.94 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2891 99.99 2898 2494 0x00000000
0 2892 100.00 2898 2494 0x00001f00
2 2892 100.00 2898 2494 0x00001f00
1 2890 99.95 2898 2494 0x00001f00
3 2892 100.00 2898 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 99.99 2900 2494 0x00000000
0 2892 99.96 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 99.98 2900 2494 0x00000000
0 2892 99.97 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2892 99.95 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 99.99 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 99.98 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2894 100.00 2900 2494 0x00000000
0 2894 100.00 2900 2495 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2890 100.00 2897 2494 0x00000000
0 2890 100.00 2897 2494 0x00001f00
2 2890 100.00 2897 2494 0x00001f00
1 2890 100.00 2897 2494 0x00001f00
3 2890 100.00 2897 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 99.99 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2892 99.96 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2888 99.99 2895 2494 0x00000000
0 2888 100.00 2895 2494 0x00001f00
2 2888 100.00 2895 2494 0x00001f00
1 2888 100.00 2895 2494 0x00001f00
3 2888 99.98 2895 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2892 100.00 2898 2494 0x00000000
0 2892 100.00 2898 2494 0x00001f00
2 2892 100.00 2898 2494 0x00001f00
1 2892 100.00 2898 2494 0x00001f00
3 2892 100.00 2898 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2892 100.00 2898 2494 0x00000000
0 2892 100.00 2898 2494 0x00001f00
2 2892 100.00 2898 2494 0x00001f00
1 2892 100.00 2898 2494 0x00001f00
3 2892 100.00 2898 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2892 100.00 2898 2494 0x00000000
0 2892 100.00 2898 2494 0x00001f00
2 2892 100.00 2898 2494 0x00001f00
1 2892 100.00 2898 2494 0x00001f00
3 2892 100.00 2898 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 99.99 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2892 99.96 2900 2494 0x00000000
0 2889 99.84 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2893 100.00 2900 2494 0x00000000
0 2893 100.00 2900 2494 0x00001f00
2 2893 100.00 2900 2494 0x00001f00
1 2893 100.00 2900 2494 0x00001f00
3 2893 100.00 2900 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2886 99.81 2898 2494 0x00000000
0 2892 100.00 2898 2494 0x00001f00
2 2890 99.95 2898 2494 0x00001f00
1 2872 99.30 2898 2494 0x00001f00
3 2891 99.98 2898 2494 0x00001f00
CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199
- 2889 99.90 2898 2494 0x00000000
0 2891 99.98 2898 2494 0x00001f00
2 2892 100.00 2898 2494 0x00001f00
1 2880 99.61 2898 2494 0x00001f00
3 2892 100.00 2898 2494 0x00001f00
next prev parent reply other threads:[~2017-03-19 21:30 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-19 13:21 [PATCH 0/2] cpufreq: schedutil: Fix and optimization Rafael J. Wysocki
2017-03-19 13:30 ` [PATCH 1/2] cpufreq: schedutil: Fix per-CPU structure initialization in sugov_start() Rafael J. Wysocki
2017-03-20 3:28 ` Viresh Kumar
2017-03-20 12:36 ` Rafael J. Wysocki
2017-03-19 13:34 ` [RFC][PATCH 2/2] cpufreq: schedutil: Force max frequency on busy CPUs Rafael J. Wysocki
2017-03-19 21:24 ` Rafael J. Wysocki [this message]
2017-03-19 21:42 ` Rafael J. Wysocki
2017-03-20 10:38 ` Peter Zijlstra
2017-03-20 12:31 ` Rafael J. Wysocki
2017-03-20 3:57 ` Viresh Kumar
2017-03-20 8:26 ` Vincent Guittot
2017-03-20 12:34 ` Patrick Bellasi
2017-03-22 23:56 ` Joel Fernandes
2017-03-23 22:08 ` Vincent Guittot
2017-03-25 3:48 ` Joel Fernandes
2017-03-27 6:59 ` Vincent Guittot
2017-03-20 12:59 ` Rafael J. Wysocki
2017-03-20 13:20 ` Vincent Guittot
2017-03-20 12:48 ` Rafael J. Wysocki
2017-03-20 10:36 ` Peter Zijlstra
2017-03-20 12:35 ` Rafael J. Wysocki
2017-03-20 12:50 ` Peter Zijlstra
2017-03-20 13:04 ` Rafael J. Wysocki
2017-03-20 13:06 ` Patrick Bellasi
2017-03-20 13:05 ` Rafael J. Wysocki
2017-03-20 14:13 ` Patrick Bellasi
2017-03-20 21:46 ` [RFC][PATCH v2 2/2] cpufreq: schedutil: Avoid decreasing frequency of " Rafael J. Wysocki
2017-03-21 6:40 ` Viresh Kumar
2017-03-21 12:30 ` Rafael J. Wysocki
2017-03-21 8:50 ` Vincent Guittot
2017-03-21 11:56 ` Patrick Bellasi
2017-03-21 13:22 ` Peter Zijlstra
2017-03-21 13:37 ` Vincent Guittot
2017-03-21 14:03 ` Peter Zijlstra
2017-03-21 14:18 ` Vincent Guittot
2017-03-21 14:25 ` Patrick Bellasi
[not found] ` <CAKfTPtALorn7HNpz4LOfWWSc3u+9y5iHB5byzfTHGQXDA+tVJQ@mail.gmail.com>
2017-03-21 14:58 ` Peter Zijlstra
2017-03-21 17:00 ` Vincent Guittot
2017-03-21 17:01 ` Vincent Guittot
2017-03-21 14:26 ` Rafael J. Wysocki
2017-03-21 14:38 ` Patrick Bellasi
2017-03-21 14:46 ` Rafael J. Wysocki
2017-03-21 14:50 ` Rafael J. Wysocki
2017-03-21 15:04 ` Peter Zijlstra
2017-03-21 15:18 ` Rafael J. Wysocki
2017-03-21 17:00 ` Peter Zijlstra
2017-03-21 17:17 ` Rafael J. Wysocki
2017-03-21 15:08 ` Patrick Bellasi
2017-03-21 15:18 ` Peter Zijlstra
2017-03-21 19:28 ` Patrick Bellasi
2017-03-21 15:02 ` Peter Zijlstra
2017-03-21 11:50 ` Patrick Bellasi
2017-03-21 23:08 ` [RFC][PATCH v3 2/2] cpufreq: schedutil: Avoid reducing frequency of busy CPUs prematurely Rafael J. Wysocki
2017-03-22 9:26 ` Peter Zijlstra
2017-03-22 9:54 ` Viresh Kumar
2017-03-23 1:04 ` Joel Fernandes
2017-03-23 19:26 ` Sai Gurrappadi
2017-03-23 20:48 ` Sai Gurrappadi
2017-03-24 1:39 ` Rafael J. Wysocki
2017-03-24 19:08 ` Sai Gurrappadi
2017-03-25 1:14 ` Sai Gurrappadi
2017-03-25 1:39 ` Rafael J. Wysocki
2017-03-27 7:04 ` Vincent Guittot
2017-03-27 21:01 ` Sai Gurrappadi
2017-03-27 21:11 ` Rafael J. Wysocki
2017-05-08 3:49 ` Wanpeng Li
2017-05-08 4:01 ` Viresh Kumar
2017-05-08 5:15 ` Wanpeng Li
2017-05-08 22:16 ` Rafael J. Wysocki
2017-05-08 22:36 ` Wanpeng Li
2017-05-08 23:01 ` Rafael J. Wysocki
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=135462462.sTWZ8TCakW@aspire.rjw.lan \
--to=rjw@rjwysocki.net \
--cc=joelaf@google.com \
--cc=juri.lelli@arm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pm@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=morten.rasmussen@arm.com \
--cc=patrick.bellasi@arm.com \
--cc=peterz@infradead.org \
--cc=srinivas.pandruvada@linux.intel.com \
--cc=vincent.guittot@linaro.org \
--cc=viresh.kumar@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).