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Merge branch 'pm-tools'
* pm-tools: tools/power turbostat: bugfix: TDP MSRs print bits fixing tools/power turbostat: correct output for MSR_NHM_SNB_PKG_CST_CFG_CTL dump tools/power turbostat: call __cpuid() instead of __get_cpuid() tools/power turbostat: indicate SMX and SGX support tools/power turbostat: detect and work around syscall jitter tools/power turbostat: show GFX%rc6 tools/power turbostat: show GFXMHz tools/power turbostat: show IRQs per CPU tools/power turbostat: make fewer systems calls tools/power turbostat: fix compiler warnings tools/power turbostat: add --out option for saving output in a file tools/power turbostat: re-name "%Busy" field to "Busy%" tools/power turbostat: Intel Xeon x200: fix turbo-ratio decoding tools/power turbostat: Intel Xeon x200: fix erroneous bclk value tools/power turbostat: allow sub-sec intervals tools/power turbostat: Decode MSR_MISC_PWR_MGMT tools/power turbostat: decode HWP registers x86 msr-index: Simplify syntax for HWP fields tools/power turbostat: CPUID(0x16) leaf shows base, max, and bus frequency tools/power turbostat: decode more CPUID fields
This commit is contained in:
Rafael J. Wysocki
commit
0d571b62dd
@ -230,10 +230,10 @@
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#define HWP_PACKAGE_LEVEL_REQUEST_BIT (1<<11)
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/* IA32_HWP_CAPABILITIES */
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#define HWP_HIGHEST_PERF(x) (x & 0xff)
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#define HWP_GUARANTEED_PERF(x) ((x & (0xff << 8)) >>8)
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#define HWP_MOSTEFFICIENT_PERF(x) ((x & (0xff << 16)) >>16)
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#define HWP_LOWEST_PERF(x) ((x & (0xff << 24)) >>24)
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#define HWP_HIGHEST_PERF(x) (((x) >> 0) & 0xff)
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#define HWP_GUARANTEED_PERF(x) (((x) >> 8) & 0xff)
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#define HWP_MOSTEFFICIENT_PERF(x) (((x) >> 16) & 0xff)
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#define HWP_LOWEST_PERF(x) (((x) >> 24) & 0xff)
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/* IA32_HWP_REQUEST */
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#define HWP_MIN_PERF(x) (x & 0xff)
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@ -34,7 +34,10 @@ name as necessary to disambiguate it from others is necessary. Note that option
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\fB--debug\fP displays additional system configuration information. Invoking this parameter
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more than once may also enable internal turbostat debug information.
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.PP
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\fB--interval seconds\fP overrides the default 5-second measurement interval.
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\fB--interval seconds\fP overrides the default 5.0 second measurement interval.
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.PP
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\fB--out output_file\fP turbostat output is written to the specified output_file.
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The file is truncated if it already exists, and it is created if it does not exist.
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.PP
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\fB--help\fP displays usage for the most common parameters.
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.PP
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@ -61,7 +64,7 @@ displays the statistics gathered since it was forked.
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.nf
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\fBCPU\fP Linux CPU (logical processor) number. Yes, it is okay that on many systems the CPUs are not listed in numerical order -- for efficiency reasons, turbostat runs in topology order, so HT siblings appear together.
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\fBAVG_MHz\fP number of cycles executed divided by time elapsed.
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\fB%Busy\fP percent of the interval that the CPU retired instructions, aka. % of time in "C0" state.
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\fBBusy%\fP percent of the interval that the CPU retired instructions, aka. % of time in "C0" state.
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\fBBzy_MHz\fP average clock rate while the CPU was busy (in "c0" state).
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\fBTSC_MHz\fP average MHz that the TSC ran during the entire interval.
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.fi
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@ -83,13 +86,14 @@ Note that multiple CPUs per core indicate support for Intel(R) Hyper-Threading T
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\fBRAM_%\fP percent of the interval that RAPL throttling was active on DRAM.
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.fi
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.PP
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.SH EXAMPLE
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.SH PERIODIC EXAMPLE
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Without any parameters, turbostat displays statistics ever 5 seconds.
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(override interval with "-i sec" option, or specify a command
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for turbostat to fork).
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Periodic output goes to stdout, by default, unless --out is used to specify an output file.
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The 5-second interval can be changed with th "-i sec" option.
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Or a command may be specified as in "FORK EXAMPLE" below.
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.nf
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[root@hsw]# ./turbostat
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CPU Avg_MHz %Busy Bzy_MHz TSC_MHz
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CPU Avg_MHz Busy% Bzy_MHz TSC_MHz
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- 488 12.51 3898 3498
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0 0 0.01 3885 3498
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4 3897 99.99 3898 3498
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@ -145,7 +149,7 @@ cpu0: MSR_IA32_THERM_STATUS: 0x88340000 (48 C +/- 1)
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cpu1: MSR_IA32_THERM_STATUS: 0x88440000 (32 C +/- 1)
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cpu2: MSR_IA32_THERM_STATUS: 0x88450000 (31 C +/- 1)
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cpu3: MSR_IA32_THERM_STATUS: 0x88490000 (27 C +/- 1)
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Core CPU Avg_MHz %Busy Bzy_MHz TSC_MHz SMI CPU%c1 CPU%c3 CPU%c6 CPU%c7 CoreTmp PkgTmp PkgWatt CorWatt GFXWatt
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Core CPU Avg_MHz Busy% Bzy_MHz TSC_MHz SMI CPU%c1 CPU%c3 CPU%c6 CPU%c7 CoreTmp PkgTmp PkgWatt CorWatt GFXWatt
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- - 493 12.64 3898 3498 0 12.64 0.00 0.00 74.72 47 47 21.62 13.74 0.00
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0 0 4 0.11 3894 3498 0 99.89 0.00 0.00 0.00 47 47 21.62 13.74 0.00
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0 4 3897 99.98 3898 3498 0 0.02
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@ -171,14 +175,16 @@ The --debug option adds additional columns to the measurement ouput, including C
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See the field definitions above.
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.SH FORK EXAMPLE
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If turbostat is invoked with a command, it will fork that command
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and output the statistics gathered when the command exits.
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and output the statistics gathered after the command exits.
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In this case, turbostat output goes to stderr, by default.
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Output can instead be saved to a file using the --out option.
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eg. Here a cycle soaker is run on 1 CPU (see %c0) for a few seconds
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until ^C while the other CPUs are mostly idle:
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.nf
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root@hsw: turbostat cat /dev/zero > /dev/null
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^C
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CPU Avg_MHz %Busy Bzy_MHz TSC_MHz
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CPU Avg_MHz Busy% Bzy_MHz TSC_MHz
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- 482 12.51 3854 3498
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0 0 0.01 1960 3498
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4 0 0.00 2128 3498
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@ -192,12 +198,12 @@ root@hsw: turbostat cat /dev/zero > /dev/null
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.fi
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Above the cycle soaker drives cpu5 up its 3.9 GHz turbo limit.
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The first row shows the average MHz and %Busy across all the processors in the system.
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The first row shows the average MHz and Busy% across all the processors in the system.
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Note that the Avg_MHz column reflects the total number of cycles executed
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divided by the measurement interval. If the %Busy column is 100%,
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divided by the measurement interval. If the Busy% column is 100%,
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then the processor was running at that speed the entire interval.
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The Avg_MHz multiplied by the %Busy results in the Bzy_MHz --
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The Avg_MHz multiplied by the Busy% results in the Bzy_MHz --
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which is the average frequency while the processor was executing --
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not including any non-busy idle time.
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@ -233,7 +239,7 @@ in the brand string in /proc/cpuinfo. On a system where
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the TSC stops in idle, TSC_MHz will drop
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below the processor's base frequency.
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%Busy = MPERF_delta/TSC_delta
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Busy% = MPERF_delta/TSC_delta
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Bzy_MHz = TSC_delta/APERF_delta/MPERF_delta/measurement_interval
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