We have tried to optimize our webpage ibutikk.no
It pulls lots of data from provider and as you might see its a comparison site for products.
I am testing with this link: www.ibutikk.no/cat/digitale-kamera/124901
And result you can see here: http://www.webpagetest.org/result/120915_KQ_AG0/
We run a VPS server with 5gig ram and 4 cpu on fast UK lines
I would really appreciate any help you can give.
Thank you
You are going to have to use something like New Relic or add some instrumentation to your back-end to get the details on the long first byte times. Since you already mentioned that you are pulling data from a provider, do you know what the performance characteristics of the calls for that data is?
Do you make one call to the provider to fetch all of the data or do you have to make several?
How long does each call to the provider take?
Do you have SLA’s?
Are you allowed to cache the responses?
Blocking back-end calls to an external data provider are performance killers even when done right.