Hello Amit, Actually, I ran it on the same machine with the same command again and these time the output has frequency information-
$ sudo ./idlestat --trace -t 5 -f /tmp/myoutput -- top Log is 4.999547 secs long with 710 events clusterA@state hits total(us) avg(us) min(us) max(us) C6-SNB 174 4953094.00 28466.06 0.00 183909.00 cpu0@state hits total(us) avg(us) min(us) max(us) C1-SNB 1 630.00 630.00 630.00 630.00 C6-SNB 111 4995205.00 45001.85 8.00 279064.00 cpu0 wakeups name count irq040 eth0 50 cpu1@state hits total(us) avg(us) min(us) max(us) C6-SNB 54 4997809.00 92552.02 125.00 323888.00 cpu1 wakeups name count irq018 ata_piix 10 cpu2@state hits total(us) avg(us) min(us) max(us) C1-SNB 35 19993.00 571.23 121.00 11699.00 C6-SNB 48 4957068.00 103272.25 51.00 323891.00 3101 8 487.00 60.88 1.00 291.00 1600 78 14303.00 183.37 1.00 6144.00 cpu2 wakeups name count cpu3@state hits total(us) avg(us) min(us) max(us) C1-SNB 4 379.00 94.75 25.00 128.00 C6-SNB 59 4997441.00 84702.39 60.00 323878.00 cpu3 wakeups name count So, output sometimes contains frequency information and sometimes it doesn't with the same command. When it does not, trace file does not contain any cpu_frequency entry. So, the problem may not be with idlestat tool since it just parses trace file. Is it possible there is any bug in kernel tracing code? -- Best Regards Salman Ahmed On Friday, 20 June 2014, 11:26, Salman Ahmed <salman...@yahoo.com> wrote: I am running it on Intel x86 platform and the output of 'cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies' is 3101000 3100000 2800000 2600000 2400000 2200000 2000000 1800000 1600000 --Thanks, Salman On Friday, 20 June 2014, 10:26, Amit Kucheria <amit.kuche...@linaro.org> wrote: On Fri, Jun 20, 2014 at 9:47 AM, Salman Ahmed <salman...@yahoo.com> wrote: > Hello Amit, > > I have pulled changes and run with your suggested following command > sudo ./idlestat --trace -t 5 -f /tmp/myoutput -- top > > But still it came up with the output without any frequency information. What platform are you running this on? Is cpufreq enabled? What is the output of 'cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies' ? > Total trace buffer: 153896 kB > Log is 4.999537 secs long with 702 events > clusterA@state hits total(us) avg(us) min(us) max(us) > C6-SNB 175 4964449.00 28368.28 0.00 183908.00 > cpu0@state hits total(us) avg(us) min(us) max(us) > C6-SNB 105 4995794.00 47578.99 49.00 223927.00 > cpu0 wakeups name count > irq040 eth0 39 > cpu1@state hits total(us) avg(us) min(us) max(us) > C1-SNB 5 852.00 170.40 41.00 446.00 > C6-SNB 64 4996275.00 78066.80 113.00 323886.00 > cpu1 wakeups name count > irq018 ata_piix 14 > cpu2@state hits total(us) avg(us) min(us) max(us) > C1-SNB 35 9158.00 261.66 121.00 1396.00 > C6-SNB 51 4969643.00 97443.98 51.00 323897.00 > cpu2 wakeups name count > cpu3@state hits total(us) avg(us) min(us) max(us) > C1-SNB 4 383.00 95.75 26.00 129.00 > C6-SNB 49 4997267.00 101985.04 67.00 319905.00 > cpu3 wakeups name count > > The problem probably is not in idlestat tool. There is no cpu_frequency line > in the trace file. > > -- > Best Regards > Salman Ahmed _______________________________________________ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
