[Bug 203217] Re: fast-user-switch heavy cpu usage

[David Erosa]

I'm still getting high CPU usage after a few hours of usage.

The system is using LDAP with just 5 users right now as It is a
developmnet environment. In production there will be hundreds of users.

strace shows an infinite print:

strace -p `pidof fast-user-switch-applet`

##########################
...
poll([{fd=25, events=POLLIN|POLLPRI|POLLERR|POLLHUP}], 1, -1) = 1 ([{fd=25, revents=POLLIN|POLLERR|POLLHUP}])
poll([{fd=25, events=POLLIN|POLLPRI|POLLERR|POLLHUP}], 1, -1) = 1 ([{fd=25, revents=POLLIN|POLLERR|POLLHUP}])
poll([{fd=25, events=POLLIN|POLLPRI|POLLERR|POLLHUP}], 1, -1) = 1 ([{fd=25, revents=POLLIN|POLLERR|POLLHUP}])
poll([{fd=25, events=POLLIN|POLLPRI|POLLERR|POLLHUP}], 1, -1) = 1 ([{fd=25, revents=POLLIN|POLLERR|POLLHUP}])
poll([{fd=25, events=POLLIN|POLLPRI|POLLERR|POLLHUP}], 1, -1) = 1 ([{fd=25, revents=POLLIN|POLLERR|POLLHUP}])
poll([{fd=25, events=POLLIN|POLLPRI|POLLERR|POLLHUP}], 1, -1) = 1 ([{fd=25, revents=POLLIN|POLLERR|POLLHUP}])
...
##########################

Using lsof, the file descriptor 25 is:

##########################
COMMAND    PID    USER   FD   TYPE     DEVICE    SIZE    NODE NAME
...
fast-user 3552 usuario   25u  sock        0,4           13075 can't identify protocol
...
##########################

f-u-s-a version is:

fast-user-switch-applet 2.24.0-0ubuntu13

-- 
fast-user-switch heavy cpu usage
https://bugs.launchpad.net/bugs/203217
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