Frustrating Drupal perfomance i've started using Drupal few days ago and from the start i've noticed very slow page load, right after installation, i though it's normal and forgot for a while about this problem.
I am running Apache 2.2 and PHP 5.3 on local PC (Core2Duo 2.4, 3GB Ram)
with Drupal 7.14. I have tried using shared hosting (5% of some Xeon CPU, 256Mb Ram for PHP) - same problem, pages took ages to load, not to mention Admin pages loading for 3-5sec, sometimes - minutes. Sometimes UI and Pages are very good, sometimes it hangs for few seconds, minutes even. Always using Ctrl+R for page reload to skip caching on browser side.
Today I've installed Performance module and did the test on shared host with a little content on page and on blank installation of Drupal at local machine mentioned above.
Results on Local: http://s14.postimage.org/ij1isbh33/Drupal_7_Local_default.jpg
Results on Shared: http://s11.postimage.org/asjhasu29/Drupal_7_shared_content.jpg
On local - first time its default installation, second time logging disabled, caching everything, aggregation etc.
Therese a phpBB3 default running on shared and local - very responsive, no hangs, page loads in a few ms.
Also, the amount of Queries, is this normal for Drupal to have 30-200 Queries?
What could be the problem with this issue?
Things to try:
http://groups.drupal.org/node/242443
http://groups.drupal.org/node/210683

But in reality we don't know until you can profile the code.
http://getmuhammad.blogspot.com/2011/08/installing-xdebug-and-webgrind-on.html