#25 CPU hog bug

[Travis Reitter]

When involuntarily disconnected from a server
(either kick or entire server shut down), an action
causes the CPU usage from < 0.1% to 95% or
more.

[Misha Nasledov]

Logged In: YES
user_id=6597

I can't reproduce this ... Can you provide me an exact
method for reproducing this?

[Travis Reitter]

Logged In: YES
user_id=346641

I'll try to produce it when I get home today.

I think that it could have to do with a long-term (several
days to a week or more) connections, if you weren't
able to reproduce it (assuming you logged into a server
and tried having someone kick you).
The server I've had it happen on has a lot of chat and a
very large News, and is running server 1.2.3, if that
helps. Maybe a loop isn't terminated on kick under
certain circumstances.. I'll try to have a look at the code
when I can.

[Travis Reitter]

Logged In: YES
user_id=346641

OK: Did a little scientific experimentation:

Joining the server I mentioned in the last post (large news,
constant chat [though I don't think chat is a factor], 1.2.3
server), I kicked a copy of myself. Instantly, the CPU usage
surged.

Then, I connected to my own server (running HXD) twice. I
kicked myself, and there was an instant spike of CPU, but
then it dwindled down to nothing just as quickly, though
really short spikes (maybe < 3%) continually showed up until
the application was quit.

-------

OK.. a little more testing. I connected remotely to myself
(rather than looped through address 0 directly), loaded the
news to 10 MB without any added stress. I think HXD only
loads so much news, regardless of the news size (since the
other server loads a lot more news at once, and most of the
news file was cut off). So, it still may be an issue with
the news on some servers being to large for GtkHx to handle
when kicked.

Sidenote: kicking directly through 0 (127.0.0.1) caused the
same amount of stress as remotely (through my domain name).

[Misha Nasledov]

Logged In: YES
user_id=6597

Hmm I'm still confused.

I tried kicking myself off remote servers, off local
servers, killing local servers abruptly, suspending them and
then disconnecting myself or waiting to time out...I
honestly find no bug. I don't notice any increase in GtkHx's
CPU usage, GtkHx does not lock up and I don't have to quit
it and restart it or anything. It seems to handle
connections perfectly fine for me! It recognizes when it's
been kicked and everything! News/chat are not factors. There
aren't any busy loops I created. I am simply using GTK+'s
main loop with its gdk_input code that does select() on my
file descriptors and its own events.