On Dec 11, 2007 1:49 PM, Richard Coleman <[EMAIL PROTECTED]> wrote:

> 1. Static content and dynamic are on the same server (that will change
> on production).  But they are on different apache virtual.  Mod_python
> is turned off for the static stuff.  Hitting only a static page is very
> fast (6500 requests per second).  Hitting the dynamic side is slow (300
> requests per second).
>
> 2. It's gigE between the web server and mysql server, on a dedicated
> switch.  The database is working pretty hard (7000 selects per second),
> but doesn't seem to be the bottleneck.  The webserver is hammered
> (typing any command takes a long time).
>

DB handling 7000 selects/sec while web server is serving 300 pages/sec
implies each page request is generating >20 select requests.  Does that seem
reasonable to you based on the content of the page you are serving?  (It
seems high to me.)  Brian Morton provided a pointer to the doc for
select_related, which could help to reduce the number of selects.  Even if
the database is keeping up, so many round-trips talking to it for a single
page request is going to add up.

Karen

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