[mod_python] modpython, mysqldb best paractice

Jim Gallacher jpg at jgassociates.ca
Wed Jul 19 15:41:36 EDT 2006

Martijn Moeling wrote:
> On 7/19/06, Martijn Moeling <martijn at xs4us.nu> wrote:
> We suspect that mysql is the problem here since the only thing we can
> see is
> mysql is consuming more and more swapspace and at some point it runs out
> of
> resources and starts looping. At that point the system (Linux) keeps
> running
> but with a 100% cpu utilization and we are unable to login and
> investigate.
> --------------------------------
> This sounds somewhat like a problem I had with my cheap-and-dodgy
> leased server, where after a few days running, database access (and
> indeed disk access and other system calls in general) would cause the
> machine to grind to a halt. The fix was an updated kernel;the one I
> had been using didn't like something on the motherboard.
> Rob
> -----------------------------------------
> Hmm we have a Dell 19" rack server with raid and all, and tried one
> exactly the same, a new Kernel I'll have a look into it, Thanx

A couple of other things to consider:

CentOS kernel issues resulting in similar problem (but not just mysql):

Mysql bug in copy to tmp table and bad query optimizer behaviour for
some complex queries:


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