[Bug 198149] [hwpmc] pmcstat -P -t (top mode, process sampling) stops after a while

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=198149

ganbold at gmail.com changed:

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                 CC|                            |ganbold at gmail.com

--- Comment #1 from ganbold at gmail.com ---
Maybe it is related to VM. When I run pmcstat (top mode) in VM it behaves same
as Adrian observed.

However when I tried pmcstat in real hardware, sampling seems working providing
events.
I tried both commands:

pmcstat -P CPU_CLK_UNHALTED_CORE -T -w 1 -t 1030
pmcstat -P INSTR_RETIRED_ANY -T -w 1 -t 1030

where 1030 is nginx worker process pid.

I'm running FreeBSD 11.0-CURRENT #4 r281075M: Sat Apr  4 22:27:29 ULAST 2015.

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