I have the problem, that some times one request takes around 10 seconds to the first byte. One of this tests could be found here: test.
Some times it is the .html-Page to request, some times it is one of the images or other files. There is no rule, which file take so long.
I do not know, where this extreme wait time come from. The server has a load of 0.00, around 100% idle time and a lot of free Memory. I enabled yesterday mod_mem_cache and mod_cache to keep the files in memory, but the bad responses are always there, as you see.
Could someone help me?
Virtual Server with Debian lenny
Dell PowerEdge™ or HP Proliant
1 GB of RAM; 2 GB dynamically
50 GB diskspace in a RAID 10
Apache 2.2 with mod_alias, mod_auth_basic, mod_autoindex, mod_cache, mod_cgi, mod_deflate, mod_dir, mod_env, mod_expires, mod_headers, mod_mem_cache, mod_mime, mod_negotation, mod_php5, mod_rewrite, mod_setenvif