[kmail2] [Bug 316541] akonadi_imap_resource uses 50% of one core even while KMail is shut down

[Guillaume Castagnino]

https://bugs.kde.org/show_bug.cgi?id=316541

--- Comment #5 from Guillaume Castagnino <casta at xwing.info> ---
Created attachment 78355
  --> https://bugs.kde.org/attachment.cgi?id=78355&action=edit
network traffic when akonadi_imap_resource CPU usage is high

I noticed that the CPU usage seems to be bounded to bandwidth usage.

In my case (connection to an imap4 exchange connector with poor quality because
the exchange server is not very stable), when the CPU starts to grow, it's in
sync with significant bandwidth usage. I get around 120kB/s both direction of
IMAP traffic (it's on my employer's local network), see the rrd screenshot
attached. All the traffic shown is IMAP related. When the network taffic drops
down, it's because I restarted akonadi...
You can relink this with the strace I reported earlier. All of those events are
coming in sync.
And It's quite systematically reproducible. CPU/Network usage is always growing
around half an hour after I restart akonadi server.

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