[arch-general] KDE plasma, baloo and UI/video playback freezes
frapox at gmail.com
Tue May 8 16:04:22 UTC 2018
My problem is: when I'm watching a video, running Konversation in the
background with logging on disk enabled, the playback of video slows
down, freezes for a while.
Running iotop and ksysguard I found that baloo_file_extractor is writing
on disk a big amount of data, filling the write queue; balooct monitor
shows baloo is indexing Konversation's logs file changes. Peaks of 60-90
MB/s of data on mechanical hdd are generated and the playback of videos
(or audio, or other GUI-related tasks) slow down or freeze. Very very
I'm running updated versions of: KDE plasma (5.12.5), kernel (4.16.7),
baloo (5.45); CFQ I/O scheduler on sda.
On the same machine, the same version of softwares, the same
configurations (of programs, mounts, IO scheduler) BUT on a Debian sid
install (home is shared between installs) is NOT showing the same issue.
On Debian, playback is running smootly even if baloo_file_extractor is
heavly loading IO writes queue.
On each installation I added this tweaks, to improve Vm management by
[frapox at tungsteno ~]$ cat /etc/sysctl.d/local.conf
vm.dirty_background_ratio = 2
vm.dirty_ratio = 5
vm.vfs_cache_pressure = 60
I also tried to recompile the Arch kernel with
CONFIG_PREEMPT_VOLUNTARY=y, to reflect the same default compile setting
of Debian, but the issue wasn't solved.
So i'm wondering which other config files or settings/tweaks I can look
into to overcome this issue on Arch linux (I'd really love to keep on
use Arch as my main OS).
Thanks in advance.
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