[horde] Sessions consuming CPU

[Michael M Slusarz]

Quoting Simon Wilson <simon at simonandkate.net>:
>
> 2011-11-04T01:04:11+10:00 ERR: HORDE [imp] Server does not support  
> TLS connections. [pid 22050 on line 340 of  
> "/var/www/horde4/imp/lib/Imap.php"]

This can be safely ignored.  Although, you should configure IMP NOT to  
use TLS connections, because it will need to go through the overhead  
on every login of trying to first use a TLS connection.

> This message hits /var/log/horde up to 25 times per second, during  
> which CPU usage remains at 100%.
>
> Still no incoming requests for httpd in httpd/access_log, or errors  
> in httpd/error_log.
>
> The exact second that Horde logs that error, CPU hits 100%. Stop  
> httpd, restart it, reproduce it. Did this several times over an  
> hour, producing the exact same result - still ZERO http requests  
> made of horde, 100% CPU at the same point the error gets logged.

You should check imp imap debug logs (see imp/config/backends.php).   
This really sounds like the issue where a user's browser is using old  
cached javascript.

michael

___________________________________
Michael Slusarz [slusarz at horde.org]