Messages in this thread | | | Subject | Re: [RFCv2 00/48] perf tools: Add threads to record command | From | Alexey Budankov <> | Date | Mon, 24 Sep 2018 10:02:56 +0300 |
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Hi,
On 23.09.2018 22:30, Jiri Olsa wrote: > On Fri, Sep 21, 2018 at 09:13:08AM +0300, Alexey Budankov wrote: > > SNIP > >> Events: >> cpu/period=P,event=0x3c/Duk;CPU_CLK_UNHALTED.THREAD >> cpu/period=P,umask=0x3/Duk;CPU_CLK_UNHALTED.REF_TSC >> cpu/period=P,event=0xc0/Duk;INST_RETIRED.ANY >> cpu/period=0xaae61,event=0xc2,umask=0x10/uk;UOPS_RETIRED.ALL >> cpu/period=0x11171,event=0xc2,umask=0x20/uk;UOPS_RETIRED.SCALAR_SIMD >> cpu/period=0x11171,event=0xc2,umask=0x40/uk;UOPS_RETIRED.PACKED_SIMD >> >> ================================================= >> >> Command: >> /usr/bin/time /tmp/vtune_amplifier_2019.574715/bin64/perf.thr record --threads=T \ >> -a -N -B -T -R --call-graph dwarf,1024 --user-regs=ip,bp,sp \ >> -e cpu/period=P,event=0x3c/Duk,\ >> cpu/period=P,umask=0x3/Duk,\ >> cpu/period=P,event=0xc0/Duk,\ >> cpu/period=0x30d40,event=0xc2,umask=0x10/uk,\ >> cpu/period=0x4e20,event=0xc2,umask=0x20/uk,\ >> cpu/period=0x4e20,event=0xc2,umask=0x40/uk \ >> --clockid=monotonic_raw -- ./matrix.(icc|gcc) > > hum, so I guess the results suck because of the -a option, > getting extra samples for all the perf record threads > > could you try without the -a? you monitor only user events, > so you're interested only in ./matrix.* samples, right?
Ok, trying without -a, in per-process mode. VTune collects as user as kernel mode samples, using /uk modifiers set. The set can be extended to collect in VM host and guests as well.
Thanks, Alexey
> > thanks, > jirka >
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