Hello everyone!

I got a problem with a website of mine (www.blogfever.de).
The site is hosted on virtual server and is shared among
10 users (at least that's what the provider STRATO says).
The server runs Apache2 with PHP5 und MySQL5.

My problem is that the server often has very long
response times, even if the actual script that generates
the page only takes 200 ms. Apart from that the overall
speed of the website is VERY fluctuant. Sometimes the
same page takes less than 100ms, and other times again
it takes more than second to generate it.

Basically I'd would like to ask how to find out what
is responsible for this.

The website has approx. 6 requests per second causing
an average of 21 MySQL queries per second. The average
execution time of all pages lies around 240 ms.

Some information about the server:
- GenuineIntel, Intel(R) Pentium(R) 4 CPU 2.80GHz
- psa v8.1.1_build81070322.17 os_SuSE 10.1
- Linux 2.6.9-023stab044.16-enterprise
- min. 512 MB RAM, dynamically up to 1024 MB,
the page, however, currently only uses around 400 MB of it.

For some hints on how to find the cause of the slow speed
I'd be very grateful.


Thanks,

Mathias K.