Try taking a look at YSlow parameters and see what is holding up from Drupal's front. Also, with top command you can also identify the memory and CPU being used by an individual apache process and if that is huge, you might just need to optimize your apache settings a little. If you use devel module, you can identify the queries that are running slow and can act accordingly. You can also enable slow query log in your mysql settings and turn it on for a while to understand the slow queries..
I would also suggest to switch on CSS optimization..
On Tue, Apr 13, 2010 at 2:00 AM, Luke drupal@lists.tacticus.com wrote:
All requests on a D6 (latest) site, from simply viewing a page (cached), to performing an administrative action, to running a drush command, are painfully slow.
It took about 12 seconds to load the homepage from a remote location today; 1-2 seconds is normal for static content, and 3-5 for java generated dynamic content, for non-drupal areas of this apache2 installation.
I disabled the nodetype module via drush (took about 25 seconds to give me the confirmation prompt).
It is now taking 5-8 seconds to load each administrative page. The slight speedup suggests that modules are potentially causing the issue here.
I have attached a module list from drush, but is there anything else i should be looking at on the drupal side, to provide some kind of speedup?
JS optimization is enabled; CSS optimization is not. Caching is standard (block caching enabled but may not be being used). I am currently trying page compression; it was previously disabled.
Thanks for any ideas.
Luke
[ Drupal support list | http://lists.drupal.org/ ]