On 4/13/2013 1:59 AM, Mike Hommey wrote:
On Sat, Apr 13, 2013 at 10:28:47AM +0200, Mike Hommey wrote:
I think we need to start thinking how to make PGO opt-in instead of
opt-out, while keeping performance where it is now.
I have a really basic question. Is PGO's performance gains something
users are actually going to notice or are we mostly talking about
synthetic benchmark pissing contests here? What's PGO's impact on
start-up time or new window time or the loading of a Twitter or Facebook
web page?
I've also seen over the years that we have a really difficult time
diagnosing and fixing some high profile crashes because of PGO and if we
can eliminate those or make them easier to diagnose and fix and all it
costs us is a some points on Sunspider, I'm wondering if it doesn't make
sense to just drop PGO and focus on finding performance wins elsewhere.
- A
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