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| author | Ralph Boehme <slow@samba.org> | 2017-07-26 14:29:33 +0200 |
|---|---|---|
| committer | Ralph Boehme <slow@samba.org> | 2017-08-11 14:19:24 +0200 |
| commit | b2f2ce0acc305f6ec99edf948c5994d7180c08a6 (patch) | |
| tree | 42751ecff10068361701f9872ac7bf7abdd02c01 | |
| parent | 62925cfa6e796c546f9450846bb9e110f29139c0 (diff) | |
| download | samba-b2f2ce0acc305f6ec99edf948c5994d7180c08a6.tar.gz | |
examples: add cache effectiveness stats to gencache.stp
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Fri Aug 11 14:19:24 CEST 2017 on sn-devel-144
| -rwxr-xr-x | examples/systemtap/gencache.stp | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/examples/systemtap/gencache.stp b/examples/systemtap/gencache.stp index 225f0aefd71..95fcff34acc 100755 --- a/examples/systemtap/gencache.stp +++ b/examples/systemtap/gencache.stp @@ -18,6 +18,7 @@ # global running, intervals +global cache_misses, cache_hits, neg_cache_hits probe begin { printf("Collecting data, press ctrl-C to stop... ") @@ -37,6 +38,18 @@ probe process(@1).library("*").function("gencache_parse").return { duration = end - begin intervals["gencache_parse"] <<< duration + + if ($return == 0) { + cache_misses++ + } else { + cache_hits++ + } +} + +probe process(@1).library("*").function("gencache_get_data_blob_parser") { + if ($timeout == 0) { + neg_cache_hits++ + } } probe process(@1).library("*").function("gencache_get_data_blob") { @@ -106,6 +119,16 @@ probe process(@1).library("*").function("gencache_stabilize").return { probe end { printf("\n\n") + printf("Summary of cache access stats\n") + printf("=============================\n\n") + printf("%-10s %-10s %-10s\n", + "Hits", "Misses", "Negative-Hits"); + printf("--------------------------------------\n") + printf("%-10d %-10d %-10d\n", + cache_hits, cache_misses, neg_cache_hits); + + printf("\n") + foreach ([name] in intervals) { printf("%-30s count: %d sum: %d us (min: %d us avg: %d us max: %d us)\n", name, |