3 ms·

Maybe the linked page is not badly coded at all - maybe that is done on purpose. Has anyone debugged why the mentioned page [1] is consuming so much CPU time?

Maybe the linked page is not badly coded at all - maybe that is done on purpose. Has anyone debugged why the mentioned page [1] is consuming so much CPU time? [1] http://www.xe.com/currencycharts/?from=EUR&to=USD&view=1M http://www.xe.com/currencycharts/?from=EUR&to=USD&view=1M

rtkwe 11y ago
It wasn't for me. I've let it sit for a couple minutes too. I can get it up to about 20% if I'm sitting there mousing over the chart with 2 years of data but other wise it doesn't seem to do too much. I've noticed some site's scripts really don't like coming back from a long sleep so maybe it was some edge case like that causing it to eat so much CPU.
- primozcigler 11y ago
  Well, I can confirm this happens for me on laptop. When I came to work after writing this post, I checked the page mentioned in the article again on my ubuntu at work (desktop machine) and the metrics were nothing special.
- godshatter 11y ago
  When running Chrome, the CPU goes into the 15% to 20% range when running the mouse in circles over the chart on my Windows 7 box at work. When running Pale Moon, I get about 10% to 15%, even after allowing all javascript domains in NoScript. Of course, I'm still running an ad blocker and don't see the top and right-hand column ads which makes me wonder if the author happened to catch an ad that was coded badly.
  - rtkwe 11y ago
    That's pretty much my setup but with Windows 10 and uBlock and matches what I saw.
deleted 11y ago
[deleted]
primozcigler 11y ago
It is indeed the page for me. I profiled the page, even found the function. It seems like the events are fired again and again, multiple times per MILIsecond. Here is the screenshot http://awesomescreenshot.com/0375n2a4c4 http://awesomescreenshot.com/0375n2a4c4 And the CPU profile if anyone will analyse it further: https://dl.dropboxusercontent.com/u/47486136/CPU-20160217T172749.cpuprofile https://dl.dropboxusercontent.com/u/47486136/CPU-20160217T17...

rtkwe 11y ago

It wasn't for me. I've let it sit for a couple minutes too. I can get it up to about 20% if I'm sitting there mousing over the chart with 2 years of data but other wise it doesn't seem to do too much. I've noticed some site's scripts really don't like coming back from a long sleep so maybe it was some edge case like that causing it to eat so much CPU.

primozcigler 11y ago
Well, I can confirm this happens for me on laptop. When I came to work after writing this post, I checked the page mentioned in the article again on my ubuntu at work (desktop machine) and the metrics were nothing special.
godshatter 11y ago
When running Chrome, the CPU goes into the 15% to 20% range when running the mouse in circles over the chart on my Windows 7 box at work. When running Pale Moon, I get about 10% to 15%, even after allowing all javascript domains in NoScript. Of course, I'm still running an ad blocker and don't see the top and right-hand column ads which makes me wonder if the author happened to catch an ad that was coded badly.
- rtkwe 11y ago
  That's pretty much my setup but with Windows 10 and uBlock and matches what I saw.

deleted 11y ago

[deleted]

primozcigler 11y ago

It is indeed the page for me. I profiled the page, even found the function. It seems like the events are fired again and again, multiple times per MILIsecond. Here is the screenshot http://awesomescreenshot.com/0375n2a4c4 http://awesomescreenshot.com/0375n2a4c4 And the CPU profile if anyone will analyse it further: https://dl.dropboxusercontent.com/u/47486136/CPU-20160217T172749.cpuprofile https://dl.dropboxusercontent.com/u/47486136/CPU-20160217T17...