The branch, master has been updated
via b2f2ce0 examples: add cache effectiveness stats to gencache.stp
from 62925cf README.Coding: add "Error and out logic"
https://git.samba.org/?p=samba.git;a=shortlog;h=master
- Log -----------------------------------------------------------------
commit b2f2ce0acc305f6ec99edf948c5994d7180c08a6
Author: Ralph Boehme <s...@samba.org>
Date: Wed Jul 26 14:29:33 2017 +0200
examples: add cache effectiveness stats to gencache.stp
Signed-off-by: Ralph Boehme <s...@samba.org>
Reviewed-by: Stefan Metzmacher <me...@samba.org>
Autobuild-User(master): Ralph Böhme <s...@samba.org>
Autobuild-Date(master): Fri Aug 11 14:19:24 CEST 2017 on sn-devel-144
-----------------------------------------------------------------------
Summary of changes:
examples/systemtap/gencache.stp | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
Changeset truncated at 500 lines:
diff --git a/examples/systemtap/gencache.stp b/examples/systemtap/gencache.stp
index 225f0ae..95fcff3 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,
--
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