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October 20, 2006
IE 7 Benchmarking
Zimbra has benchmarked IE7 and found some big improvements. I am seeing similar things on QEDWiki: IE 7 is much more performant in heavy "Ajax" situations, though it lags behind Mozilla. Firefox 2 (Mozilla 1.8.1) seems to be a bit more faster that 1.5 on it, and hopefully Mozilla 1.9 will offer real speed improvements.
Posted by doron at October 20, 2006 6:54 AM
Comments
IE uses Profile Guided Optimization which probably
results in an 8% performance improvement with no
additional coding changes. They're probably getting
some benefit from VS2005 for building too.
There are a few Mozilla unofficial builders building
with PGO and it does make a difference. Building
with PGO is a pain in the neck as you have to go
through an instrumentation phase which would take
some work to automate. If that were doable.
It requires VS2005 and 2.0 is based on VS2003.
Posted by: Michael Moy at October 20, 2006 11:11 AM
Is there a bug for using profile-guided optimization for Firefox nightlies and releases?
Posted by: Jesse Ruderman at October 20, 2006 4:54 PM
As far as I know one of the main reasons JS performance improved in IE is because they solved issues with leaking and slowdown with large numbers of objects.
Posted by: Laurens Holst at October 20, 2006 10:00 PM