On 06/14/17 14:42, Mick wrote: > On Wednesday 14 Jun 2017 13:10:16 Grant Edwards wrote: >> Starting a few months back, I've noticed that on some of my machines, >> Firefox has started to use rediculous amounts of CPU and memory. It >> will burn 100% of a CPU for minutes at a time while apparently doing >> nothing. Opening 2-3 tabs will use up 1-2 GB of RAM. Doing the same >> thing thing in Chrome uses 0% CPU (once pages are rendered) and less >> that 1/10 the RAM. >> >> I've got the same version of Firefox with the same set of extensions >> on other machines that don't seem to have issues. >> >> Is there any useful troubleshooting one can do (e.g. uninstalling >> extensions one at a time)? Or is it finally time to give up on >> Firefox? > > It may be hardware acceleration trouble. What video card are you using? I > have noticed hard lock ups on FF, LibreOffice and even Kmail (more rare) on > two different systems with AMD/Radeon video cards. The keyboard becomes > totally unresponsive. This has started since the last Xorg/Mesa update, but > I > haven't had the time to look into it. The logs do not show anything > meaningful. FF was particularly troublesome on version 45.8.0, but with > 52.1.0-r1 seems to have settled down.
I have one system with a fanless radeon card :: 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Cape Verde PRO [Radeon HD 7750/8740 / R7 250E] that goes blank, locks keyboard and requires a hard system reset, sporadically.Sometimes months, sometimes a few days. It always comes back fine after reboot. Numerous memory scans finds nothing wrong with ram. It locks up sporadically, unrelated to load/hardware usage, neither specific to an application. I suspect the video driver and associated codes, but have not found it. Then again, I have not looked in a robust manner. If you look at Phoronix, there is heavy work on most aspects of the greater AMD/radeon area of linux. I just hope some more modern fanless video cards (radeon) become available, as what I use is old. I was/am preparing to work on radeontop. Some folks boot windows and use vendor supplied diagnostic tools when a gremlin appears in the radeon hardware. My card(s) are so old, I'm waiting on newer fanless cards (have not looked lately to see what's is out there that is fanless, radeon and priced lower). All in all, I love radeon/AMD video cards; ymmv. radeontop needs tlc, so anyone could jump my efforts as that ebuild/code needs some updates. I'm not sure when I'll get to (proxy) fix it up; but it monitors the radeon cards by categories of GPU/resource utilization, if certain apps are killing your video/system. Not sure what new features are in the newer versions. I do have a plethora of older radeon cards to test, if somebody wanted to proxy maintain radeontop, as I'm not sure when I'll get to it. https://github.com/clbr/radeontop Bad year for this old fart, in several domains.... hth, James
