Messages in this thread Patch in this message | | | From | Leo Yan <> | Subject | [PATCH v1 10/11] perf c2c: Update documentation for new display option 'peer' | Date | Wed, 27 Apr 2022 23:50:12 +0800 |
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Since the new display option 'peer' is introduced, this patch is to update the documentation to reflect it.
Signed-off-by: Leo Yan <leo.yan@linaro.org> Tested-by: Ali Saidi <alisaidi@amazon.com> --- tools/perf/Documentation/perf-c2c.txt | 22 +++++++++++++++++----- 1 file changed, 17 insertions(+), 5 deletions(-)
diff --git a/tools/perf/Documentation/perf-c2c.txt b/tools/perf/Documentation/perf-c2c.txt index b39e3f3df272..aa560ce1a192 100644 --- a/tools/perf/Documentation/perf-c2c.txt +++ b/tools/perf/Documentation/perf-c2c.txt @@ -109,7 +109,8 @@ REPORT OPTIONS -d:: --display:: - Switch to HITM type (rmt, lcl) to display and sort on. Total HITMs as default. + Switch to HITM type (rmt, lcl) or peer snooping type (peer) to display + and sort on. Total HITMs (tot) as default. --stitch-lbr:: Show callgraph with stitched LBRs, which may have more complete @@ -174,12 +175,18 @@ For each cacheline in the 1) list we display following data: Cacheline - cacheline address (hex number) - Rmt/Lcl Hitm + Rmt/Lcl Hitm (For display with HITM types) - cacheline percentage of all Remote/Local HITM accesses + Snoop Peer (For display with peer type) + - cacheline percentage of peer access + LLC Load Hitm - Total, LclHitm, RmtHitm - count of Total/Local/Remote load HITMs + Snoop Peer + - count of peer access + Total records - sum of all cachelines accesses @@ -211,6 +218,9 @@ For each offset in the 2) list we display following data: HITM - Rmt, Lcl - % of Remote/Local HITM accesses for given offset within cacheline + Snoop Peer + - % of peer accesses for given offset within cacheline + Store Refs - L1 Hit, L1 Miss, Any Lvl - % of store accesses that hit L1, missed L1 and any cache level for given offset within cacheline @@ -227,8 +237,9 @@ For each offset in the 2) list we display following data: Code address - code address responsible for the accesses - cycles - rmt hitm, lcl hitm, load - - sum of cycles for given accesses - Remote/Local HITM and generic load + cycles - rmt hitm, lcl hitm, load, peer + - sum of cycles for given accesses - Remote/Local HITM, generic load and + peer access cpu cnt - number of cpus that participated on the access @@ -251,7 +262,8 @@ The 'Node' field displays nodes that accesses given cacheline offset. Its output comes in 3 flavors: - node IDs separated by ',' - node IDs with stats for each ID, in following format: - Node{cpus %hitms %stores} + Node{cpus %hitms %stores} (For display with HITM types) + Node{cpus %peers %stores} (For display with "peer" type) - node IDs with list of affected CPUs in following format: Node{cpu list} -- 2.25.1
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