diff options
Diffstat (limited to 'tools/power/x86/turbostat/turbostat.8')
| -rw-r--r-- | tools/power/x86/turbostat/turbostat.8 | 43 |
1 files changed, 31 insertions, 12 deletions
diff --git a/tools/power/x86/turbostat/turbostat.8 b/tools/power/x86/turbostat/turbostat.8 index 8e7b29af78f6..0fc7a11f300e 100644 --- a/tools/power/x86/turbostat/turbostat.8 +++ b/tools/power/x86/turbostat/turbostat.8 @@ -4,17 +4,11 @@ turbostat \- Report processor frequency and idle statistics .SH SYNOPSIS .ft B .B turbostat -.RB [ "\-s" ] -.RB [ "\-v" ] -.RB [ "\-m MSR#" ] -.RB [ "\-M MSR#" ] +.RB [ Options ] .RB command .br .B turbostat -.RB [ "\-s" ] -.RB [ "\-v" ] -.RB [ "\-m MSR#" ] -.RB [ "\-M MSR#" ] +.RB [ Options ] .RB [ "\-i interval_sec" ] .SH DESCRIPTION \fBturbostat \fP reports processor topology, frequency @@ -37,11 +31,13 @@ The \fB-p\fP option limits output to the 1st thread in each package. .PP The \fB-v\fP option increases verbosity. .PP -The \fB-m MSR#\fP option dumps the specified 32-bit MSR, -in addition to the usual frequency and idle statistics. +The \fB-d MSR#\fP option includes the delta of the specified 32-bit MSR counter. .PP -The \fB-M MSR#\fP option dumps the specified 64-bit MSR, -in addition to the usual frequency and idle statistics. +The \fB-D MSR#\fP option includes the delta of the specified 64-bit MSR counter. +.PP +The \fB-m MSR#\fP option includes the the specified 32-bit MSR value. +.PP +The \fB-M MSR#\fP option includes the the specified 64-bit MSR value. .PP The \fB-i interval_sec\fP option prints statistics every \fiinterval_sec\fP seconds. The default is 5 seconds. @@ -155,6 +151,29 @@ Note that turbostat reports average GHz of 3.63, while the arithmetic average of the GHz column above is lower. This is a weighted average, where the weight is %c0. ie. it is the total number of un-halted cycles elapsed per time divided by the number of CPUs. +.SH SMI COUNTING EXAMPLE +On Intel Nehalem and newer processors, MSR 0x34 is a System Management Mode Interrupt (SMI) counter. +Using the -m option, you can display how many SMIs have fired since reset, or if there +are SMIs during the measurement interval, you can display the delta using the -d option. +.nf +[root@x980 ~]# turbostat -m 0x34 +cor CPU %c0 GHz TSC MSR 0x034 %c1 %c3 %c6 %pc3 %pc6 + 1.41 1.82 3.38 0x00000000 8.92 37.82 51.85 17.37 0.55 + 0 0 3.73 2.03 3.38 0x00000055 1.72 48.25 46.31 17.38 0.55 + 0 6 0.14 1.63 3.38 0x00000056 5.30 + 1 2 2.51 1.80 3.38 0x00000056 15.65 29.33 52.52 + 1 8 0.10 1.65 3.38 0x00000056 18.05 + 2 4 1.16 1.68 3.38 0x00000056 5.87 24.47 68.50 + 2 10 0.10 1.63 3.38 0x00000056 6.93 + 8 1 3.84 1.91 3.38 0x00000056 1.36 50.65 44.16 + 8 7 0.08 1.64 3.38 0x00000056 5.12 + 9 3 1.82 1.73 3.38 0x00000056 7.59 24.21 66.38 + 9 9 0.09 1.68 3.38 0x00000056 9.32 + 10 5 1.66 1.65 3.38 0x00000056 15.10 50.00 33.23 + 10 11 1.72 1.65 3.38 0x00000056 15.05 +^C +[root@x980 ~]# +.fi .SH NOTES .B "turbostat " |