diff options
| author | Ian Rogers <[email protected]> | 2024-02-20 23:07:53 -0800 |
|---|---|---|
| committer | Namhyung Kim <[email protected]> | 2024-02-22 08:57:09 -0800 |
| commit | a59fb796a36bb6c2b7e6e256a9e5f9ba18109937 (patch) | |
| tree | c8cd6369418cfa273ca4d5f993e54d2348bb0bdd /tools/testing/selftests/bpf/progs/recvmsg_unix_prog.c | |
| parent | eee41e6b287e2adfefbe3b6fc80c66097c076f89 (diff) | |
perf metrics: Compute unmerged uncore metrics individually
When merging counts from multiple uncore PMUs the metric is only
computed for the metric leader. When merging/aggregation is disabled,
prior to this patch just the leader's metric would be computed. Fix
this by computing the metric for each PMU.
On a SkylakeX:
Before:
```
$ perf stat -A -M memory_bandwidth_total -a sleep 1
Performance counter stats for 'system wide':
CPU0 82,217 UNC_M_CAS_COUNT.RD [uncore_imc_0] # 9.2 MB/s memory_bandwidth_total
CPU18 0 UNC_M_CAS_COUNT.RD [uncore_imc_0] # 0.0 MB/s memory_bandwidth_total
CPU0 61,395 UNC_M_CAS_COUNT.WR [uncore_imc_0]
CPU18 0 UNC_M_CAS_COUNT.WR [uncore_imc_0]
CPU0 0 UNC_M_CAS_COUNT.RD [uncore_imc_1]
CPU18 0 UNC_M_CAS_COUNT.RD [uncore_imc_1]
CPU0 0 UNC_M_CAS_COUNT.WR [uncore_imc_1]
CPU18 0 UNC_M_CAS_COUNT.WR [uncore_imc_1]
CPU0 81,570 UNC_M_CAS_COUNT.RD [uncore_imc_2]
CPU18 113,886 UNC_M_CAS_COUNT.RD [uncore_imc_2]
CPU0 62,330 UNC_M_CAS_COUNT.WR [uncore_imc_2]
CPU18 66,942 UNC_M_CAS_COUNT.WR [uncore_imc_2]
CPU0 75,489 UNC_M_CAS_COUNT.RD [uncore_imc_3]
CPU18 27,958 UNC_M_CAS_COUNT.RD [uncore_imc_3]
CPU0 55,864 UNC_M_CAS_COUNT.WR [uncore_imc_3]
CPU18 38,727 UNC_M_CAS_COUNT.WR [uncore_imc_3]
CPU0 0 UNC_M_CAS_COUNT.RD [uncore_imc_4]
CPU18 0 UNC_M_CAS_COUNT.RD [uncore_imc_4]
CPU0 0 UNC_M_CAS_COUNT.WR [uncore_imc_4]
CPU18 0 UNC_M_CAS_COUNT.WR [uncore_imc_4]
CPU0 75,423 UNC_M_CAS_COUNT.RD [uncore_imc_5]
CPU18 104,527 UNC_M_CAS_COUNT.RD [uncore_imc_5]
CPU0 57,596 UNC_M_CAS_COUNT.WR [uncore_imc_5]
CPU18 56,777 UNC_M_CAS_COUNT.WR [uncore_imc_5]
CPU0 1,003,440,851 ns duration_time
1.003440851 seconds time elapsed
```
After:
```
$ perf stat -A -M memory_bandwidth_total -a sleep 1
Performance counter stats for 'system wide':
CPU0 88,968 UNC_M_CAS_COUNT.RD [uncore_imc_0] # 9.5 MB/s memory_bandwidth_total
CPU18 0 UNC_M_CAS_COUNT.RD [uncore_imc_0] # 0.0 MB/s memory_bandwidth_total
CPU0 59,498 UNC_M_CAS_COUNT.WR [uncore_imc_0]
CPU18 0 UNC_M_CAS_COUNT.WR [uncore_imc_0]
CPU0 0 UNC_M_CAS_COUNT.RD [uncore_imc_1] # 0.0 MB/s memory_bandwidth_total
CPU18 0 UNC_M_CAS_COUNT.RD [uncore_imc_1] # 0.0 MB/s memory_bandwidth_total
CPU0 0 UNC_M_CAS_COUNT.WR [uncore_imc_1]
CPU18 0 UNC_M_CAS_COUNT.WR [uncore_imc_1]
CPU0 88,635 UNC_M_CAS_COUNT.RD [uncore_imc_2] # 9.5 MB/s memory_bandwidth_total
CPU18 117,975 UNC_M_CAS_COUNT.RD [uncore_imc_2] # 11.5 MB/s memory_bandwidth_total
CPU0 60,829 UNC_M_CAS_COUNT.WR [uncore_imc_2]
CPU18 62,105 UNC_M_CAS_COUNT.WR [uncore_imc_2]
CPU0 82,238 UNC_M_CAS_COUNT.RD [uncore_imc_3] # 8.7 MB/s memory_bandwidth_total
CPU18 22,906 UNC_M_CAS_COUNT.RD [uncore_imc_3] # 3.6 MB/s memory_bandwidth_total
CPU0 53,959 UNC_M_CAS_COUNT.WR [uncore_imc_3]
CPU18 32,990 UNC_M_CAS_COUNT.WR [uncore_imc_3]
CPU0 0 UNC_M_CAS_COUNT.RD [uncore_imc_4] # 0.0 MB/s memory_bandwidth_total
CPU18 0 UNC_M_CAS_COUNT.RD [uncore_imc_4] # 0.0 MB/s memory_bandwidth_total
CPU0 0 UNC_M_CAS_COUNT.WR [uncore_imc_4]
CPU18 0 UNC_M_CAS_COUNT.WR [uncore_imc_4]
CPU0 83,595 UNC_M_CAS_COUNT.RD [uncore_imc_5] # 8.9 MB/s memory_bandwidth_total
CPU18 110,151 UNC_M_CAS_COUNT.RD [uncore_imc_5] # 10.5 MB/s memory_bandwidth_total
CPU0 56,540 UNC_M_CAS_COUNT.WR [uncore_imc_5]
CPU18 53,816 UNC_M_CAS_COUNT.WR [uncore_imc_5]
CPU0 1,003,353,416 ns duration_time
```
Signed-off-by: Ian Rogers <[email protected]> |
Acked-by: Namhyung Kim <[email protected]>
Cc: K Prateek Nayak <[email protected]>
Cc: Stephane Eranian <[email protected]>
Cc: Kaige Ye <[email protected]>
Cc: Kajol Jain <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: John Garry <[email protected]>
Signed-off-by: Namhyung Kim <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Diffstat (limited to 'tools/testing/selftests/bpf/progs/recvmsg_unix_prog.c')
0 files changed, 0 insertions, 0 deletions