[ic] never ending IC process

[Christian Brink]

Ron Phipps wrote:
> Hello,
> 
> I've been seeing something weird on a site we built, an interchange
> process is running for a long time and eating up processor and memory,
> here is a capture from top:
> 
>   PID USER     PRI  NI  SIZE  RSS SHARE STAT %CPU %MEM   TIME CPU
> COMMAND
> 30930 ic50      15   0 36476  35M  2232 R    98.1  2.3 103:59   0
> interchange
> 
> As you can see it's taking a lot of CPU time and eating up a lot of the
> available CPU.  If we let it run long enough the site will no longer
> respond and an Internal error is presented in a web browser.
> 
> Is there a way to see what IC is doing?  Perhaps some debugging
> statements in key places will let us know what IC is doing and why it's
> taking so much CPU?  This state happens even after a restart and is
> pretty sporadic how long after a restart it occurs.
> 

Check for bots. I have seen this when rude bots (10-15 hits/sec) hit a 
slower system.

Which led me to ban the bots from alexa.com. (which did not follow my 
robots.txt)

Christian