On some sites, the CPU usage goes to 100% (one core) and it freezes any activity inside the browser. For example I can move the window, but not click the tabs or in the page, and if I do, the actions are delayed.
One site in particular, izismile.com, can make this 100% usage to go for tens of seconds, even a minute or so. The network activity doesn't seem high, a few KB (LAN included), so I thought maybe it struggles with communicating with relays, but sometimes it is possible to have a few seconds break, during which if I open up other sites, tor.se for example, they open up fast, no glitches.
Why is this happening and should I worry? I am using the latest Tor Borwser (9.5) on Archlinux x64, with javascript disabled, no tracking, some extra about:config
changes, all coming from privacytools.io. Also uBlock Origin, the only foreign thing added.
top
orps axw
, the only processes that might show 100% usage areBrowser/firefox.real
, orWeb Content
, which seems just another name forBrowser/firefox.real -contentproc -childID 1 -isForBrowser -prefsLen 1 -prefMa
(for example). Would these two be used behind the scene for cryptocurrency-related activity? Also, this only lasts 10s of sec, then everything goes back to normal. It might happen again when opening up a link in their page, sometime in the future, might not, but in rest, everything seems fine. Still, I had to ask.