https://bugs.kde.org/show_bug.cgi?id=422747
Bug ID: 422747
Summary: ksysguard and netspeed widget stutter during CIFS file
transfer
Product: ksysguard
Version: 5.19.0
Platform: openSUSE RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: ksysguard-b...@kde.org
Reporter: sb56...@gmail.com
CC: plasma-b...@kde.org
Target Milestone: ---
Hi there, I'm experiencing a weird glitch when transferring files (via WiFI)
from a *mounted* CIFS share on my LAN. The ksysguard main window and the
"Netspeed Widget" I have in my panel normally seem to refresh about 1x/second.
But when transferring files to/from `/mnt/NAS/` they start to freeze and
stutter, sometimes for ~5 seconds, and they they recover and update and then
freeze again for the entire duration of the file transfer. This happens when
transferring LAN files with Dolphin *and* via the command line. The rest of the
OS remains responsive, though. My network is slow, via WiFI it can only do
about 7 MiB/s max, so it shouldn't be a core I/O scheduler problem, and I have
a relatively fast SSD. At any rate, my `/sys/block/sda/queue/scheduler` is
[bfq].
Also I tested this using the normal KIO CIFS access through Dolphin, and this
bug does *not* occur. However, due to bug #291835 the transfer speed is less
than 50% of what a normal CIFS mount achieves.
Thanks for the help!
===========
Operating System: openSUSE Tumbleweed 20200609
KDE Plasma Version: 5.19.0
KDE Frameworks Version: 5.70.0
Qt Version: 5.15.0
Kernel Version: 5.6.14-1-default
OS Type: 64-bit
Processors: 4 × Intel® Core™ i5-3320M CPU @ 2.60GHz
Memory: 7.5 GiB of RAM
Graphics Processor: Mesa DRI Intel® HD Graphics 4000
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