From 39f43177442d44d8a945c3ff6a8c08f481539763 Mon Sep 17 00:00:00 2001 From: Jeff Hostetler Date: Mon, 15 Apr 2019 13:39:44 -0700 Subject: trace2: add absolute elapsed time to start event Add elapsed process time to "start" event to measure the performance of early process startup. Signed-off-by: Jeff Hostetler Signed-off-by: Junio C Hamano --- Documentation/technical/api-trace2.txt | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) (limited to 'Documentation') diff --git a/Documentation/technical/api-trace2.txt b/Documentation/technical/api-trace2.txt index f37fccf1da..baaa1153bb 100644 --- a/Documentation/technical/api-trace2.txt +++ b/Documentation/technical/api-trace2.txt @@ -60,7 +60,7 @@ git version 2.20.1.155.g426c96fcdb ------------ $ cat ~/log.perf 12:28:42.620675 common-main.c:38 | d0 | main | version | | | | | 2.20.1.155.g426c96fcdb -12:28:42.621001 common-main.c:39 | d0 | main | start | | | | | git version +12:28:42.621001 common-main.c:39 | d0 | main | start | | 0.001173 | | | git version 12:28:42.621111 git.c:432 | d0 | main | cmd_name | | | | | version (version) 12:28:42.621225 git.c:662 | d0 | main | exit | | 0.001227 | | | code:0 12:28:42.621259 trace2/tr2_tgt_perf.c:211 | d0 | main | atexit | | 0.001265 | | | code:0 @@ -79,7 +79,7 @@ git version 2.20.1.155.g426c96fcdb ------------ $ cat ~/log.event {"event":"version","sid":"1547659722619736-11614","thread":"main","time":"2019-01-16 17:28:42.620713","file":"common-main.c","line":38,"evt":"1","exe":"2.20.1.155.g426c96fcdb"} -{"event":"start","sid":"1547659722619736-11614","thread":"main","time":"2019-01-16 17:28:42.621027","file":"common-main.c","line":39,"argv":["git","version"]} +{"event":"start","sid":"1547659722619736-11614","thread":"main","time":"2019-01-16 17:28:42.621027","file":"common-main.c","line":39,"t_abs":0.001173,"argv":["git","version"]} {"event":"cmd_name","sid":"1547659722619736-11614","thread":"main","time":"2019-01-16 17:28:42.621122","file":"git.c","line":432,"name":"version","hierarchy":"version"} {"event":"exit","sid":"1547659722619736-11614","thread":"main","time":"2019-01-16 17:28:42.621236","file":"git.c","line":662,"t_abs":0.001227,"code":0} {"event":"atexit","sid":"1547659722619736-11614","thread":"main","time":"2019-01-16 17:28:42.621268","file":"trace2/tr2_tgt_event.c","line":163,"t_abs":0.001265,"code":0} @@ -601,6 +601,7 @@ from all events and the `time` field is only present on the "start" and { "event":"start", ... + "t_abs":0.001227, # elapsed time in seconds "argv":["git","version"] } ------------ @@ -1118,7 +1119,7 @@ $ git status $ cat ~/log.perf d0 | main | version | | | | | 2.20.1.160.g5676107ecd.dirty -d0 | main | start | | | | | git status +d0 | main | start | | 0.001173 | | | git status d0 | main | def_repo | r1 | | | | worktree:/Users/jeffhost/work/gfw d0 | main | cmd_name | | | | | status (status) ... @@ -1163,7 +1164,7 @@ $ git status ... $ cat ~/log.perf d0 | main | version | | | | | 2.20.1.162.gb4ccea44db.dirty -d0 | main | start | | | | | git status +d0 | main | start | | 0.001173 | | | git status d0 | main | def_repo | r1 | | | | worktree:/Users/jeffhost/work/gfw d0 | main | cmd_name | | | | | status (status) ... @@ -1219,7 +1220,7 @@ $ git status ... $ cat ~/log.perf d0 | main | version | | | | | 2.20.1.156.gf9916ae094.dirty -d0 | main | start | | | | | git status +d0 | main | start | | 0.001173 | | | git status d0 | main | def_repo | r1 | | | | worktree:/Users/jeffhost/work/gfw d0 | main | cmd_name | | | | | status (status) d0 | main | region_enter | r1 | 0.001791 | | index | label:do_read_index .git/index -- cgit v1.2.3