Thanks :)
2014-08-27 13:30 GMT-04:00 Julien Desfossez <[email protected]>: > Hi, > > On 14-08-26 11:21 PM, Jessica Foest wrote: > > Hi > > > > i tried to retrieve system calls traces with all perf context parameters > > . the problem is that only a few PERF counters are activated and lttng > > fails to activate the other perf context parameters. > > how can i solve it ? > > There is a hardware limit on the number perf PMU counters that can be > activated at the same time. It depends on the CPU and if you are on a > virtual machine. > If I remember correctly it is 3 or 4 on the i7. > > Julien >
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