As I've mentioned before, there's a large instance of FlexWiki running here at
Microsoft with over a thousand namespaces and over 20000 topics. This is a
valuable test bed to compare 1.8 versus 2.0 performance. I've started this
testing and I'm getting some early results.
I am looking at (1) how long it takes to return a page the first time and (2)
how long it takes for subsequent hits.
* First hit
o 10000 of 20000 pages when hit for the first time are slower in 2.0 than 1.8
o Of these, on average 2.0 is three times slower
o 2500 of these 10000 are at least twice as slow under 2.0 as under 1.8
o 1600 of these 10000 are at least three times as slow under 2.0 than 1.8
o 1200 of these 10000 are at least four times as slow under 2.0 than 1.8
o 130 of these are more than ten times slower under 2.0 than 1.8
* Subsequent hits
o 1800 of 20000 pages are slower in 2.0 than 1.8
o Of these, on average 2.0 is two times slower
o 230 of these 1800 are at least twice as slow under 2.0 as under 1.8
o 125 of these 1800 are at least three times as slow under 2.0 than 1.8
o 50 of these 1800 are at least four times as slow under 2.0 than 1.8
o 12 of these are more than five times slower under 2.0 than 1.8
The 2.0 code base I ran against is about a week old, so I'm going to be doing a
new run overnight tonight (yes it takes a few hours) to get Craig's latest perf
changes.
Also, one of the things I'm going to do next is probably filter out all pages
that take less than a second on the theory that we don't' really care that much
about pages that are several times slower but are still fast enough...
/David
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