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I've all but confirmed that it's specifically the @linkedin web page (that I had kept pinned in my chrome-for-windows) which was chewing up about 40% of my battery life. I closed everything and re-opened all but that, still normal battery draw. Here is the site idle at CPU 15.6%!
the @linkedin tab seems to only be doing some network traffic while as a background tab, so it only occasionally is spiking the CPU, the rest of the time sitting at 0%.
but as soon as I activate the tab, its CPU jumps up to around 10%, and constantly bounces between 8 and 25%.
but as soon as I activate the tab, its CPU jumps up to around 10%, and constantly bounces between 8 and 25%.
how could the site possibly be consuming 10-25% of my CPU at all times that the tab is active?
I mean, cliche, we say "oohhh, shitty JS and SPA sites". but no, like, seriously, how could you possibly be so poorly written to consume that much CPU?
I mean, cliche, we say "oohhh, shitty JS and SPA sites". but no, like, seriously, how could you possibly be so poorly written to consume that much CPU?
the @linkedin site is built on ember... in fact a number of their core devs work there, and they're a primary incubator/supporter of the framework.
one would presume this site is built somewhat "to spec" of how an ember site should be.
if so, that's horrifying.
one would presume this site is built somewhat "to spec" of how an ember site should be.
if so, that's horrifying.
If I wrote a super naive framework that re-rendered the whole page constantly, churning the DOM and everything, causing tons of GC thrashing, etc.... I'm still not sure if I could get it to consistently kill 10-25% of the CPU, constantly, just never ending.
if I was like rendering the entire web page in webgl and rotated in 3d, re-rendered 60fps, and did everything I could to avoid being able to have GPU acceleration, I am not sure if I'd chew through 10-25% CPU.
I'm just sorta stunned. I never could have guessed/admitted/accepted that one single web page could be the culprit of my laptop having literally HALF it's advertised battery life... ~4-5 hours instead of 9-10.
here's the worst part... I actually really like @linkedin, and I use it quite often throughout my day. It's my secondary social network after this one.
I'm not shitting on it because I want to make fun of them. I'm genuinely sad that I can no longer justify having it open.
I'm not shitting on it because I want to make fun of them. I'm genuinely sad that I can no longer justify having it open.
By contrast, I'm actively using twitter right now, installed PWA (chrome). I'm watching the chrome task manager, and seeing approx 1-3% CPU consistently being used while I'd writing these tweets.
Again, comparison was @linkedin just sitting there (idle foreground) at 10-25% CPU.
Again, comparison was @linkedin just sitting there (idle foreground) at 10-25% CPU.
