Sure it's a meta bug, but for me 12309 is still actual, and I don't use any tuning for I/O subsystem at all.
Not as bad as years ago when it happens for the first time, but I still have to throttle rtorrent to download at 2.5MB/sec maximum instead of usual 10MB/s if I like to view films in mplayer at same time without jitter/freeze/lag. And that's on powerful and modern enough system with kernel 4.19.27, CPU i7-2600K @ 4.5GHz, RAM 24GB, and HDD 3TB Western Digital Caviar Green WD30EZRX-00D. This is annoying, and I remember time before 12309 when rtorrent without any throttling won't make mplayer to freeze on less powerful hardware. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/336652 Title: Poor system performance under I/O load To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/336652/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs