mirror of
https://github.com/gelldur/EventBus.git
synced 2024-12-27 12:21:02 +08:00
Performace
This is maybe not perfect but can show something. All result are run using RELESE build.
Why?
Sample DEBUG run:
Run on (8 X 3600 MHz CPU s)
2017-08-05 12:44:53
***WARNING*** Library was built as DEBUG. Timings may be affected.
---------------------------------------------------------------
Benchmark Time CPU Iterations
---------------------------------------------------------------
checkSimpleNotification 293 ns 293 ns 2319171
Sample RELEASE run:
Run on (8 X 3600 MHz CPU s)
2017-08-05 12:45:43
---------------------------------------------------------------
Benchmark Time CPU Iterations
---------------------------------------------------------------
checkSimpleNotification 6 ns 6 ns 116492914
So below all numbers are in release.
This library as you can read in main README.md was inspired by CCNotificationCenter from cocos2d-x game engine.
So I want to present comparision of performance of this two. Of course this is only showcase.
I don't want to add submodule of cocos2d-x so simply I run it only and present results. Cocos2d-x was also build as release. If you want to repeat it, here are steps I followed:
cd performance # From root of this project
git clone -b v2 https://github.com/cocos2d/cocos2d-x.git #this can take some time :/ it need to download ~900 MB
# Uncomment line in CMakeLists.txt which INCLUDE(Cocos2dxCompare.cmake)
# Apply patch CCNotificationCenterPerformance.patch
cd cocos2d-x
git apply ../CCNotificationCenterPerformance.patch
Run on (8 X 3600 MHz CPU s)
2017-08-06 17:03:13
------------------------------------------------------------------------------------------------------------------------------------------
Benchmark Time CPU Iterations UserCounters Faster
------------------------------------------------------------------------------------------------------------------------------------------
call1kLambdas_compare 2125 ns 2124 ns 319355 sum=1.18969G Compare with check1kListeners overhead is super small
------------------------------------------------------------------------------------------------------------------------------------------
checkSimpleNotification 5 ns 5 ns 147012577 sum=560.808M x 34.4
checkSimpleNotification_CCNotificationCenter 172 ns 172 ns 4193935 sum=15.9986M
------------------------------------------------------------------------------------------------------------------------------------------
check10Listeners 23 ns 23 ns 30960962 sum=1.15339G x 13.2
check10Listeners_CCNotificationCenter 305 ns 305 ns 2208720 sum=84.256M
------------------------------------------------------------------------------------------------------------------------------------------
check100Listeners 210 ns 209 ns 3373926 sum=1.25689G x 8.4
check100Listeners_CCNotificationCenter 1758 ns 1758 ns 398100 sum=151.863M
------------------------------------------------------------------------------------------------------------------------------------------
check1kListeners 2170 ns 2170 ns 326478 sum=1.21623G x 7.8
check1kListeners_CCNotificationCenter 17001 ns 16999 ns 41548 sum=158.493M
------------------------------------------------------------------------------------------------------------------------------------------
check10NotificationsFor1kListeners 267 ns 267 ns 2632700 sum=-1.79305G x 52.3
check10NotificationsFor1kListeners_CCNotificationCenter 13987 ns 13986 ns 51560 sum=44.2743M
------------------------------------------------------------------------------------------------------------------------------------------
check100NotificationsFor1kListeners 101 ns 101 ns 7100579 sum=-1.44982G x 120
check100NotificationsFor1kListeners_CCNotificationCenter 12128 ns 12127 ns 54017 sum=51.181M
------------------------------------------------------------------------------------------------------------------------------------------
check1kNotificationsFor1kListeners 102 ns 102 ns 6714698 sum=-1.74812G x 117
check1kNotificationsFor1kListeners_CCNotificationCenter 11940 ns 11939 ns 57722 sum=55.2338M
------------------------------------------------------------------------------------------------------------------------------------------
check100NotificationsFor10kListeners 305 ns 305 ns 2301484 sum=1.21936G x 420
check100NotificationsFor10kListeners_CCNotificationCenter 128244 ns 128233 ns 5297 sum=49.5221M
------------------------------------------------------------------------------------------------------------------------------------------
checkNotifyFor10kListenersWhenNoOneListens 2 ns 2 ns 392590976 sum=0 x 63694 ;)
checkNotifyFor10kListenersWhenNoOneListens_CCNotificationCenter 127388 ns 127378 ns 5460 sum=0
So comparing to CCNotificationCenter, EventBus is something like ~10x FASTER especially when we have more unique notifications.