Hello
I am using a haswell box. (E3-1231 v3). HT enabled.
perf stat -e \{cycles,r148,r1000248,r8d1,r40d1\} -- sleep 1
with ubuntu version of perf
Performance counter stats for 'sleep 1':
756066 cycles
5740 r1000248
5516 r8d1
9064 r40d1
0 r148
1.001770249 seconds time elapsed
with relatively new tip of perf/core:
Performance counter stats for 'sleep 1':
729403 cycles
7250 r1000248
5628 r8d1
9273 r40d1
<not supported> r148
1.001674174 seconds time elapsed
from https://download.01.org/perfmon/HSW/
SMT on
SMT off
cpu_clk_unhalted.thread cycles Fixed counter 2 Fixed counter 2
ld_blocks.no_sr r803 0,1,2,3
0,1,2,3,4,5,6,7
mem_load_uops_retired.l1_miss r8d1 0,1,2,3 0,1,2,3
mem_load_uops_retired.hit_lfb r40d1 0,1,2,3 0,1,2,3
l1d_pend_miss.pending r148 2 2
Seems these five events couldn't be counting at the same time,
although in terms of hardware they should get along. Is this a bug or
a limitation I should be aware of? Thank you so much.
Yuanfang
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