[bitbake-devel] [dizzy 5/7] cooker: Improve pyinotify performance
Alex DAMIAN
alexandru.damian at intel.com
Fri Apr 10 14:57:05 UTC 2015
From: Richard Purdie <richard.purdie at linuxfoundation.org>
Benchmarks show that the introduction of pyinotify regressed
performance. This patch ensures we only call the add_watch() function
for new entries, not ones we've already processed which does improve
performance as measured by "time bitbake -p".
This doesn't completely remove the overhead but it does substantially
reduce it.
(Bitbake rev: 493361f35f6cc332d4ea359a2695622c2c91a9c2)
Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
---
lib/bb/cooker.py | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/lib/bb/cooker.py b/lib/bb/cooker.py
index e965bcc..3909dc0 100644
--- a/lib/bb/cooker.py
+++ b/lib/bb/cooker.py
@@ -122,11 +122,13 @@ class BBCooker:
self.configuration = configuration
self.configwatcher = pyinotify.WatchManager()
+ self.configwatcher.bbseen = []
self.confignotifier = pyinotify.Notifier(self.configwatcher, self.config_notifications)
self.watchmask = pyinotify.IN_CLOSE_WRITE | pyinotify.IN_CREATE | pyinotify.IN_DELETE | \
pyinotify.IN_DELETE_SELF | pyinotify.IN_MODIFY | pyinotify.IN_MOVE_SELF | \
pyinotify.IN_MOVED_FROM | pyinotify.IN_MOVED_TO
self.watcher = pyinotify.WatchManager()
+ self.watcher.bbseen = []
self.notifier = pyinotify.Notifier(self.watcher, self.notifications)
@@ -180,7 +182,7 @@ class BBCooker:
if not watcher:
watcher = self.watcher
for i in deps:
- f = os.path.dirname(i[0])
+ f = i[0]
if f in watcher.bbseen:
continue
watcher.bbseen.append(f)
@@ -194,6 +196,7 @@ class BBCooker:
except pyinotify.WatchManagerError as e:
if 'ENOENT' in str(e):
f = os.path.dirname(f)
+ watcher.bbseen.append(f)
continue
raise
--
1.9.1
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