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SubjectRe: [RFCv2 00/48] perf tools: Add threads to record command
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?

thanks,
jirka

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