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From Christopher Schultz <>
Subject Re: [users@httpd] One page hanging entire server
Date Mon, 09 May 2016 20:26:19 GMT
Hash: SHA1


On 5/9/16 2:16 PM, D'Arcy J.M. Cain wrote:
> This weekend at various times my server was brought down.  I saw
> one process using over 99% of the CPU.  No pages could be served
> while this was going on.  I found the culprit.  It was a Wordpress
> site and the script was wp-cron.php.  I stopped it by adding a line
> to wp-config.php as
> and other sites suggested.
> However, I am still confused how this one process was able to block
> all other pages.  I have MaxClients set to 100 and 15 other cores
> that they can be run on.  Why didn't my server continue to serve
> requests?

What kind of response were you getting from your server when you
connected with another client? Timeout? 503? 500?

If you tried to hit another WordPress page, it probably ALSO called
wp-cron.php which tried to hit the db to check for outstanding tasks,
and that call probably got blocked by a db record or table lock.

I'm guessing this is really a question for the WordPress community.

- -chris
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