On macOS 10.12.4 and Chrome 58.0.3029, it appears that my test suite is slow down if Chrome is in the background. #64 should have fixed it a long ago, but a comment is mentioning the --disable-renderer-backgrounding flag, so I gave it a try, and it does fix my issue:
Before (Angular CLI project using Karma/Chrome):
05 05 2017 10:44:24.333:INFO [launcher]: Starting browser Chrome
05 05 2017 10:44:25.105:INFO [Chrome 58.0.3029 (Mac OS X 10.12.4)]: Connected on socket xKymjhyLh5832m9sAAAA with id 81470424
Chrome 58.0.3029 (Mac OS X 10.12.4): Executed 102 of 102 SUCCESS (5.512 secs / 5.473 secs)
Chrome 58.0.3029 (Mac OS X 10.12.4): Executed 102 of 102 SUCCESS (29.198 secs / 29.164 secs)
Chrome 58.0.3029 (Mac OS X 10.12.4): Executed 102 of 102 SUCCESS (27.1 secs / 26.266 secs)
Chrome 58.0.3029 (Mac OS X 10.12.4): Executed 102 of 102 SUCCESS (28.606 secs / 27.676 secs)
First run is fast, the following are really slow.
After, with this karma.conf.js using the --disable-renderer-backgrounding flag:
customLaunchers: {
chromeBackground: {
base: 'Chrome',
flags: ['--disable-renderer-backgrounding']
}
},
browsers: ['chromeBackground'],The tests run faster:
05 05 2017 10:42:54.681:INFO [Chrome 58.0.3029 (Mac OS X 10.12.4)]: Connected on socket cAPHozikOSfUEEnpAAAA with id 83636627
Chrome 58.0.3029 (Mac OS X 10.12.4): Executed 102 of 102 SUCCESS (5.666 secs / 5.628 secs)
Chrome 58.0.3029 (Mac OS X 10.12.4): Executed 102 of 102 SUCCESS (6.864 secs / 6.831 secs)
Chrome 58.0.3029 (Mac OS X 10.12.4): Executed 102 of 102 SUCCESS (7.129 secs / 7.109 secs)
This may be related to the Chrome issue https://bugs.chromium.org/p/chromium/issues/detail?id=605498#c1
On macOS 10.12.4 and Chrome 58.0.3029, it appears that my test suite is slow down if Chrome is in the background. #64 should have fixed it a long ago, but a comment is mentioning the
--disable-renderer-backgroundingflag, so I gave it a try, and it does fix my issue:Before (Angular CLI project using Karma/Chrome):
First run is fast, the following are really slow.
After, with this
karma.conf.jsusing the--disable-renderer-backgroundingflag:The tests run faster:
This may be related to the Chrome issue https://bugs.chromium.org/p/chromium/issues/detail?id=605498#c1