how about you make the indicator (ab)use upstart for this, it has file watchers already and could send an event the indicator could pick up (hoping that systemd offers something equivalent indeed)
-- You received this bug notification because you are a member of DX Packages, which is subscribed to indicator-messages in Ubuntu. Matching subscriptions: dx-packages https://bugs.launchpad.net/bugs/1308130 Title: indicator-messages-service is waking up every 4 seconds adding inotifies on paths that don't exist Status in “indicator-messages” package in Ubuntu: Confirmed Bug description: I've observed that an "idle" indicator-messages-services is waking up every 4 seconds on a poll() and doing two inotify_add_watch() calls on paths that don't exist, which wastes power on devices such as phones. strace shows: clock_gettime(CLOCK_MONOTONIC, {10117, 224455428}) = 0 poll([{fd=8, events=POLLIN}, {fd=9, events=POLLIN}], 2, 3991) = 0 (Timeout) clock_gettime(CLOCK_MONOTONIC, {10121, 224516469}) = 0 inotify_add_watch(9, "/usr/local/share/applications", IN_MODIFY|IN_ATTRIB|IN_CLOSE_WRITE|IN_MOVED_FROM|IN_MOVED_TO|IN_CREATE|IN_DELETE|IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT|IN_ONLYDIR) = -1 ENOENT (No such file or directory) inotify_add_watch(9, "/usr/share/ubuntu-touch/applications", IN_MODIFY|IN_ATTRIB|IN_CLOSE_WRITE|IN_MOVED_FROM|IN_MOVED_TO|IN_CREATE|IN_DELETE|IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT|IN_ONLYDIR) = -1 ENOENT (No such file or directory) clock_gettime(CLOCK_MONOTONIC, {10121, 232085521}) = 0 poll([{fd=8, events=POLLIN}, {fd=9, events=POLLIN}], 2, 3984) = 0 (Timeout) clock_gettime(CLOCK_MONOTONIC, {10125, 222593684}) = 0 inotify_add_watch(9, "/usr/local/share/applications", IN_MODIFY|IN_ATTRIB|IN_CLOSE_WRITE|IN_MOVED_FROM|IN_MOVED_TO|IN_CREATE|IN_DELETE|IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT|IN_ONLYDIR) = -1 ENOENT (No such file or directory) inotify_add_watch(9, "/usr/share/ubuntu-touch/applications", IN_MODIFY|IN_ATTRIB|IN_CLOSE_WRITE|IN_MOVED_FROM|IN_MOVED_TO|IN_CREATE|IN_DELETE|IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT|IN_ONLYDIR) = -1 ENOENT (No such file or directory) clock_gettime(CLOCK_MONOTONIC, {10125, 229094524}) = 0 Can these redundant polling checks be reduced or removed? Polling every 4 seconds is a little bit heavy handed IMHO. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/indicator-messages/+bug/1308130/+subscriptions -- Mailing list: https://launchpad.net/~dx-packages Post to : dx-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~dx-packages More help : https://help.launchpad.net/ListHelp
