Hello,
I have made some consecutive test on my site and I receive very different and confusing results.
1.[url]http://www.webpagetest.org/result/100820_3A87/[/url]
2.[url]http://www.webpagetest.org/result/100820_3A8A/[/url]
3.[url]http://www.webpagetest.org/result/100820_3A8D/[/url]
4.[url]http://www.webpagetest.org/result/100820_3A8J/[/url]
5.[url]http://www.webpagetest.org/result/100820_3A8N/[/url]
Beside the very different Start Render time are other very strange things.
1.Why somethimes the Reapeat View is slower than the Firs View (see test 1 and 3) :huh::huh:
2.Why for test 4 the reqests are paralellized 2 by 2 and for others they aren’t? :huh:
It is because the hosting server or because my site code ???
You have quite a bit of variability in your first byte times (back-end code/server performance). From under a second to over 6 seconds. It looks like whatever code serves you css and js is having similar variability.
Without knowing how your site is put together I’d hazard a guess that most of it is caused by hosting but that your code could possibly be making things worse depending on what it is doing.
For your question #2, the requests in all of the tests are parallelized 2 by 2 (may be easier to see if you go down to the connection view waterfall). That is because IE 7 opens up 2 connections per domain and browsers can only have one request at a time open on a given connection. ou can make it more parallel by sharding the static objects across domains but your real bang for your buck will come with getting your back-end performance under control.
btw, if you open the advanced settings you can run up to 10 tests without having to submit them separately.