I've done some experimenting, and something is definitely up with flashplugin-nonfree (9.0.21.78.2ubuntu1~edgy1).
If I remove it, firefox runs fine under maximum cpu-load. (regardless of it it's nice:d or not) If I have it installed, firefox is very laggy under max cpu-load, but only if the program that generates cpu uses nice. ./maxcpu contains "while true; do true; done" If I run "./maxcpu" or "nice -n 1 ./maxcpu" then firefox is still quite responsive. If I run "nice ./maxcpu" or "nice -n 19 ./maxcpu" then firefox is unusable, just showing my bookmarks when I click bookmarks from the menu can take like 20s. I'd try the old flashplugin-nonfree/edgy but it doesn't seem to install correctly any more. My current version is from edgy- backports/multiverse. The problem is only with firefox + flash. Games (at least xmoto) run fine regardless of how I run maxcpu. -- bittorrent eats CPU - Only FF becomes slow. https://launchpad.net/bugs/24876 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
