This section describes the various pieces of information available via perfdump, defining what each field represents, and shows how to tune each field, if possible.
First, here is a sample of the perfdump output from our site:
ListenSocket #0: ------------------ Address https://INADDR_ANY:80 ActiveThreads 487 WaitingThreads 47 BusyThreads 440 IdleThreads 14 Thread limits 48/512 KeepAliveInfo: ------------------ KeepAliveCount 196/200 KeepAliveHits 2030795 KeepAliveFlushes 840657 CacheInfo: ------------------ enabled yes CacheEntries 4096/4096 CacheSize(bytes) 10394342/10485760 Hit Ratio 6806487/8457088 ( 80.48) pollInterval 5 maxFileSize 537600 Server DNS cache disabled
If you are running a 3.0 server, you might notice that there are a few fields which are not described here. These fields are obsolete and will go away in the next release. They do not provide any useful information for tuning the web server. The names of the obsolete fields are listed at the end of each section.
The first subtopic in the perfdump screen is the ListenSocket information. For each hardware virtual server you have enabled in your web server, you will find one ListenSocket structure. For most sites, this means only one listen socket will be listed.
This field contains the base address which this listen socket is listening to. For most sites which are not using hardware virtual servers, the URL will be http://INADDR_ANY:80. “INADDR_ANY” is a constant ...