https://bugs.kde.org/show_bug.cgi?id=433796
Bug ID: 433796
Summary: kio_http_cache_cleaner is busy waiting
Product: frameworks-kio
Version: git master
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: HTTP
Assignee: kio-bugs-n...@kde.org
Reporter: sit...@kde.org
CC: kdelibs-b...@kde.org
Target Milestone: ---
SUMMARY
(this is very poorly researched, but if I don't write it down I'll forget
tomorrow)
kio_http_cache_cleaner has a loop that is basically always true and inside it
waits for 100ms and then either talks to sockets (on the other end I guess is
the http.so) or not. it wraps around and the dance continues.
This effectively is causing entirely pointless CPU load. Not that big a deal on
desktops but in the >0.5% range on plasma mobile. Always. Even when idle. My
poor battery :(
STEPS TO REPRODUCE
1. run the cleaner
OBSERVED RESULT
watch it doing stuff when there is nothing to do (at least I think there isn't)
EXPECTED RESULT
be completely idle unless there's work to be done
ADDITIONAL INFORMATION
This actually was made worse in a change a while ago that reduced the sleep
time from 1s to 100ms because the cleaner wasn't shutting down properly. That
did make me wonder why it is busy looping at all though. The application can
simply run an eventloop and attach to QLocalServer::newConnection (which I
presume will not busy wait) thereby being able to exit somewhat immediately and
having zero need for any amount of while(true){} looping.
--
You are receiving this mail because:
You are watching all bug changes.
