https://bugs.kde.org/show_bug.cgi?id=356559
Bug ID: 356559
Summary: Downloading to ntfs-3g partition blocks UI
Product: ktorrent
Version: 4.3.1
Platform: Kubuntu Packages
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: general
Assignee: joris.guis...@gmail.com
Reporter: andy...@mail.ru
When downloading large torrents to an ntfs-3g partition ktorrent UI
periodically blocks for a long time (tens of seconds). Keyboard and mouse
events are buffered until UI unblocks for a few seconds and after that it
blocks again. This happens while the torrent is being downloaded; UI becomes
responsive again when the torrent finishes downloading. The UI is not blocked
when seeding torrents from an ntfs-3g partition.
Reproducible: Always
Steps to Reproduce:
1. Add a large torrent (30 Gb or more) to ktorrent and choose an ntfs-3g
partition as the target. Make sure it starts downloading (i.e. ktorrent is
receiving data).
2. Try interacting with ktorrent UI. E.g. click on different torrents in the
download list, open contextual menu, click on the File/Edit/View... menu, etc.
Actual Results:
At certain points UI blocks, without CPU load. HDD seems not loaded as well.
While UI is blocked, network transfers are not happening (network receive and
send meters drop to 0).
Expected Results:
The UI should remain responsive at all times. Preferably, network transfers
should also remain active. At least some torrents may be on different
filesystems and not blocked by write operations.
I have saved and attached a backtrace of ktorrent while it is blocked.
Kubuntu 15.10, x86_64.
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