On 2013-01-31 11:43 AM, Kyle Huey wrote:
On Wed, Jan 30, 2013 at 8:03 PM, Ehsan Akhgari <[email protected] <mailto:[email protected]>> wrote:We then tried to get a sense of how much of a win the PGO optimizations are. Thanks to a series of measurements by dmandelin, we know that disabling PGO/LTCG will result in a regression of about 10-20% on benchmarks which examine DOM and layout performance such as Dromaeo and guimark2 (and 40% in one case), but no significant regressions in the startup time, and gmail interactions. Thanks to a series of telemetry measurements performed by Vladan on a Nightly build we did last week which had PGO/LTCG disabled, there are no telemetry probes which show a significant regression on builds without PGO/LTCG. Vladan is going to try to get this data out of a Tp5 run tomorrow as well, but we don't have any evidence to believe that the results of that experiments will be any different. Isn't PGO worth something like 15% on Ts?
That was what I thought, but local measurements performed by dmandelin proved otherwise.
Cheers, Ehsan _______________________________________________ dev-platform mailing list [email protected] https://lists.mozilla.org/listinfo/dev-platform
