https://bugs.kde.org/show_bug.cgi?id=486423
Bug ID: 486423
Summary: Avoid unnecessary stat calls for recent files and
directories
Classification: Applications
Product: gwenview
Version: unspecified
Platform: Other
OS: Linux
Status: REPORTED
Severity: wishlist
Priority: NOR
Component: general
Assignee: gwenview-bugs-n...@kde.org
Reporter: voidpointertonull+bugskde...@gmail.com
Target Milestone: ---
Many KDE programs have an issue with doing a whole lot of I/O undesired by the
user, and gwenview seems to be no exception. This is mostly a problem with
network mounted drives not rarely having high latency, and occasionally not
even responding, leading to programs trying to use them freezing for a while.
In my case I've had an NFS mount pointing to a remote HDD which was getting
quite hammered, so it was not responding for 10+ seconds at a time. A more
usual example of something like this happening is an NFS mount not responding
at all due to networking issues which tends to completely freeze quite a few
misbehaving programs.
Found it odd that gwenview is affected as I was trying to look at local
pictures, but a quick strace run revealed what's going on:
1) Recently opened files are checked out with stat calls and even opened to do
another stat with the file handle.
2) After entries from ~/.local/share/gwenview/recentfolders/ get loaded, the
directories there get checked out with stat.
3) When closing the program, fstab gets read and mount points get checked out
with stat.
The last one is likely done by an external library providing info for the
"Places" tab (although that isn't shown in my test run), so let's consider it
out of the scope of the bug report, just included for the sake of completeness.
Aside from that, there's the nuisance that recent file and directory info is
not just loaded, but everything pointed to gets checked out even when there's
no recent information is shown. I wasn't even aware of this feature as I was
always opening pictures directly, and I've just recently discovered that
there's the "Open Recent" menu item, and recent directories and files get shown
when gwenview is started with no file specified.
I'm not exactly sure why is the directory and file stat checking done when
gwenview is launched to show a specific file. Initially I thought that maybe it
checks recent entries to see if files were deleted, but a quick test of
deleting a picture which then keeps showing up in the "Open Recent" menu item
revealed that not to be the case.
Given that, I believe the stat calls shouldn't happen when the "Recent Folders"
and "Recent Files" tabs aren't shown which is the case when gwenview is used to
view specific files.
--
You are receiving this mail because:
You are watching all bug changes.
