perfboot.py: Add --end-tag option
The current behavior, which is to use tags[-1] for end_tag, is good
enough in most cases, but sometime it makes more sense to use a
different one as end_tag.
For example, when optimizing APK scanning code in package manager,
using 'boot_progress_pms_scan_end' as end_tag would give us quicker
benchmark iterations as well as more relevant numbers possibly with
a smaller standard deviation.
Change-Id: Ic6371c936b36d1d87e9742502fd8958682a3b7d5
diff --git a/init/perfboot.py b/init/perfboot.py
index b0efb11..2a17ab6 100755
--- a/init/perfboot.py
+++ b/init/perfboot.py
@@ -408,7 +408,10 @@
parser.add_argument('-t', '--tags', help='Specify the filename from which '
'event tags are read. Every line contains one event '
'tag and the last event tag is used to detect that '
- 'the device has finished booting.')
+ 'the device has finished booting unless --end-tag is '
+ 'specified.')
+ parser.add_argument('--end-tag', help='An event tag on which the script '
+ 'stops measuring the boot time.')
parser.add_argument('--apk-dir', help='Specify the directory which contains '
'APK files to be installed before measuring boot time.')
return parser.parse_args()
@@ -439,10 +442,14 @@
record_list = []
event_tags = filter_event_tags(read_event_tags(args.tags), device)
+ end_tag = args.end_tag or event_tags[-1]
+ if end_tag not in event_tags:
+ sys.exit('%s is not a valid tag.' % end_tag)
+ event_tags = event_tags[0 : event_tags.index(end_tag) + 1]
init_perf(device, args.output, record_list, event_tags)
interval_adjuster = IntervalAdjuster(args.interval, device)
event_tags_re = make_event_tags_re(event_tags)
- end_tag = event_tags[-1]
+
for i in range(args.iterations):
print 'Run #%d ' % i
record = do_iteration(