Planned Sitework Tuesday 13th Jan 2009, Starting performance tuning testing Options

[Imhotep]

Greetings.

Starting at 07:00 EST (12:00 GMT) on Tuesday, 13th Jan I'll be doing some tweaking on the server configuration to optimize speeds and page loads. I don't anticipate going more than 2 hours on it. During that period you might notice short intermittant "page cannot be displayed" or "internal server error" pages on the forums. The www site should only be minimally affected. Outages should be no longer than a minute or so as I load the new configuration and test whether it works or not. If it does then I run the benchmarking program against it and if it doesn't make things faster than revert the change. During benchmarking you should not notice any anomolies.

I

[Imhotep]

OK, couple of more tweaks and looks like another slight improvement in the numbers:
[root@c3po ~]# ab -c 10 -n 1000 -k -q forums.mosaicmusings.net/
This is ApacheBench, Version 2.3 <$Revision: 655654 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking forums.mosaicmusings.net (be patient).....done


Server Software: Apache/2.2.10
Server Hostname: forums.mosaicmusings.net
Server Port: 80

Document Path: /
Document Length: 124069 bytes

Concurrency Level: 10
Time taken for tests: 6.609 seconds
Complete requests: 1000
Failed requests: 404
(Connect: 0, Receive: 0, Length: 404, Exceptions: 0)
Write errors: 0
Keep-Alive requests: 0
Total transferred: 124422763 bytes
HTML transferred: 124063763 bytes
Requests per second: 151.31 [#/sec] (mean)
Time per request: 66.090 [ms] (mean)
Time per request: 6.609 [ms] (mean, across all concurrent requests)
Transfer rate: 18385.04 [Kbytes/sec] received

Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.0 0 0
Processing: 47 66 16.5 60 141
Waiting: 45 63 16.1 58 138
Total: 47 66 16.5 60 141

Percentage of the requests served within a certain time (ms)
50% 60
66% 68
75% 75
80% 79
90% 89
95% 99
98% 111
99% 122
100% 141 (longest request)
[root@c3po ~]#

(.3 seconds faster, 6.6 instead of 6.9 and the system handling 9 requests/second more than it did before).

I don't forsee any more 'internal server error' or 'page cannot be displayed' messages, but I'll be looking around to see if there's anything else to prod.

Enjoy.
I