[Bug 198723] [hwpmc] pmcstat -p (process counting) gets corrupted even if pinned to a CPU
bugzilla-noreply at freebsd.org
bugzilla-noreply at freebsd.org
Sat Apr 18 07:04:22 UTC 2015
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=198723
ganbold at gmail.com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ganbold at gmail.com
--- Comment #1 from ganbold at gmail.com ---
It seems like PARTIAL_RAT_STALLS.SLOW_LEA_WINDOW and
PARTIAL_RAT_STALLS.MUL_SINGLE_UOP related to Sandybridge CPUs. Since I don't
have real hardware I tried it in VM:
root at bsd:/home/tsgan/himenobmtxpa/src # cpuset -l 0 pmcstat -w 1 -p
CPU_CLK_UNHALTED_CORE -p PARTIAL_RAT_STALLS.SLOW_LEA_WINDOW -p
PARTIAL_RAT_STALLS.MUL_SINGLE_UOP ./himenobmtxpa M 384
For example:
Grid-size= XS (32x32x64)
S (64x64x128)
M (128x128x256)
L (256x256x512)
XL (512x512x1024)
Grid-size = # p/CPU_CLK_UNHALTED_CORE p/PARTIAL_RAT_STALLS.SLOW_LEA_WINDOW
p/PARTIAL_RAT_STALLS.MUL_SINGLE_UOP
3026657 17021
0
0 0
0
0 0
0
0 0
0
0 0
0
0 0
0
0 0
0
0 0
0
0 0
0
0 0
0
0 0
0
0 0
0
0 0
0
0 0
0
0 0
0
0 0
0
0 0
0
0 0
0
0 0
0
0 0
0
0 0
0
0 0
0
0 0
0
0 0
0
0 0
0
0 0
0
0 0
0
0 0
0
0 0
0
0 0
0
0 0
0
0 0
0
0 0
0
...
Not sure whether my setup is correct or not, but I don't see such big numbers.
How many and what type of CPUs do you have? What else is running on your
system? How can I test it in Xeon system?
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