[Libreoffice-bugs] [Bug 92529] config written during startup ...

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=92529

Aron Budea  changed:

   What|Removed |Added

 Blocks||108636
 CC||ba...@caesar.elte.hu


Referenced Bugs:

https://bugs.documentfoundation.org/show_bug.cgi?id=108636
[Bug 108636] [META] Extensive file accesses
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[Libreoffice-bugs] [Bug 92529] config written during startup ...

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https://bugs.documentfoundation.org/show_bug.cgi?id=92529

--- Comment #11 from Stephan Bergmann  ---
(In reply to Komal from comment #10)
> Hey Stephan, Is this issue still open? Can you help me in resolving it?

The configmgr entry point for comment 4 is RootAccess::commitChanges in
configmgr/source/rootaccess.cxx, which calls Components::writeModifications in
configmgr/source/components.cxx to actually spawn the asynchronous write-back
thread.  What's relevant here is to find out why RootAccess::commitChanges is
already called during start up.

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[Libreoffice-bugs] [Bug 92529] config written during startup ...

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https://bugs.documentfoundation.org/show_bug.cgi?id=92529

Komal  changed:

   What|Removed |Added

 CC||komalbharad...@gmail.com

--- Comment #10 from Komal  ---
Hey Stephan, Is this issue still open? Can you help me in resolving it?

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[Libreoffice-bugs] [Bug 92529] config written during startup ...

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https://bugs.documentfoundation.org/show_bug.cgi?id=92529

--- Comment #9 from Komal  ---
Hi Michael, I am Komal. I am novice to open source. But really interested to
learn and contribute for this organization.Would like to work on this issue? I
need help, as to how do I go about it?
Thank you!

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[Libreoffice-bugs] [Bug 92529] config written during startup ...

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https://bugs.documentfoundation.org/show_bug.cgi?id=92529

V Stuart Foote  changed:

   What|Removed |Added

 Depends on||100169


Referenced Bugs:

https://bugs.documentfoundation.org/show_bug.cgi?id=100169
[Bug 100169] DirectWrite OpenGL having trouble composing  height of text, is
clipping glyphs
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[Libreoffice-bugs] [Bug 92529] config written during startup ...

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https://bugs.documentfoundation.org/show_bug.cgi?id=92529

V Stuart Foote  changed:

   What|Removed |Added

 Depends on|100169  |


Referenced Bugs:

https://bugs.documentfoundation.org/show_bug.cgi?id=100169
[Bug 100169] DirectWrite OpenGL having trouble composing  height of text, is
clipping glyphs
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[Libreoffice-bugs] [Bug 92529] config written during startup ...

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jan iversen  changed:

   What|Removed |Added

 Whiteboard|ToBeReviewed|

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[Libreoffice-bugs] [Bug 92529] config written during startup ...

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jan iversen  changed:

   What|Removed |Added

 Whiteboard||ToBeReviewed

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[Libreoffice-bugs] [Bug 92529] config written during startup ...

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https://bugs.documentfoundation.org/show_bug.cgi?id=92529

Robinson Tryon (qubit)  changed:

   What|Removed |Added

 Whiteboard|easyHack difficultyBeginner |
   |skillCpp topicCleanup   |

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[Libreoffice-bugs] [Bug 92529] config written during startup ...

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https://bugs.documentfoundation.org/show_bug.cgi?id=92529

Robinson Tryon (qubit)  changed:

   What|Removed |Added

   Keywords||difficultyBeginner,
   ||easyHack, skillCpp,
   ||topicCleanup

--- Comment #7 from Robinson Tryon (qubit)  ---
Migrating Whiteboard tags to Keywords: (easyHack, difficultyBeginner, skillCpp,
topicCleanup)

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[Libreoffice-bugs] [Bug 92529] config written during startup ...

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https://bugs.documentfoundation.org/show_bug.cgi?id=92529

--- Comment #6 from Stephan Bergmann  ---
(In reply to Chris Halls from comment #5)

(1)  While writing the configuration changes happens asynchronously in its own
thread, it does lock a configuration-wide mutex, so other threads trying to
access the configuration can get blocked.

(2)  What may already help the performance of some use cases (though probably
not the above NFS case) is

"tdf#92764 - make configmgr write less noisy."

(3)  Re "An ugly workaround may be to disable configuration changes completely
by setting profile folder read-only"
():  Since

"Support modification write-back to other than registrymodifications.xcu," you
can change the "user:" entry in LO's fundamentalrc CONFIGURATION_LAYERS line
from "user:..." (or "user:!...") to "user:*..." to not write any new updates to
registrymodifications.xcu (but still read in an already existing one on
startup).  (And on older versions, just removing the "user:" entry from
CONFIGURATION_LAYERS should work to not read nor write
registrymodifications.xcu).  For better or worse.

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[Libreoffice-bugs] [Bug 92529] config written during startup ...

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https://bugs.documentfoundation.org/show_bug.cgi?id=92529

--- Comment #5 from Chris Halls  ---
There's another use case that is relevant to this code in this Debian bug
report:

 Bug#774399: libreoffice: aggressive (blocking) config rewrite (lag, slowness)
 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=774399

"With /home on network file system (NFS or similar) libreoffice is lagging 
miserably on basic operations like when libreoffice just started or new writer 
document is opened etc., as well as on innocent moves between tabs under 
[Tools -> Options -> Libreoffice] even when nothing is changed."

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[Libreoffice-bugs] [Bug 92529] config written during startup ...

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https://bugs.documentfoundation.org/show_bug.cgi?id=92529

--- Comment #4 from Stephan Bergmann  ---
(In reply to Michael Meeks from comment #3)
> Fair cop - so I'l easy-hack-ize this. The task would be (I guess) to catch
> and unwind commitChanges() calls during startup that are writing redundant
> data, and also (ideally) to defer config write-back until after startup has
> completed - my hope being that we call an explicit flush_() that
> short-circuits that timeout if we exit.

Keep it simple.  First, find out what actually triggers those four writes, and
whether they are during startup or shutdown or inbetween.  Only then, think
about any changes, if necessary.

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[Libreoffice-bugs] [Bug 92529] config written during startup ...

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https://bugs.documentfoundation.org/show_bug.cgi?id=92529

Michael Meeks  changed:

   What|Removed |Added

 Whiteboard||easyHack difficultyBeginner
   ||skillCpp topicCleanup

--- Comment #3 from Michael Meeks  ---
Fair cop - so I'l easy-hack-ize this. The task would be (I guess) to catch and
unwind commitChanges() calls during startup that are writing redundant data,
and also (ideally) to defer config write-back until after startup has completed
- my hope being that we call an explicit flush_() that short-circuits that
timeout if we exit.

I guess we'd want to hook that into desktop/source/app/ via some new API on any
non-published interface implemented by (probably):

configmgr/source/configurationregistry.cxx

Or - I guess we could overload the semantic of 'flush' there - such that we
start out with a much longer timeout to write-back say 10seconds or so - and we
reset that on the first flush() - might work better ;-) 

Thanks ! =)

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[Libreoffice-bugs] [Bug 92529] config written during startup ...

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https://bugs.documentfoundation.org/show_bug.cgi?id=92529

--- Comment #2 from Stephan Bergmann  ---
The way it works is that every call to the configmgr's commitChanges()
initiates a write-back of registrymodifcations.xcu.  Actual writing is then
delayed by 1 second to allow consecutive calls to commitChanges() to pile up
and be processed in one batch.

That is, this needs looking at the client code that calls commitChanges()
(configmgr/source/readwriteaccess.cxx) to determine why there is so much
activity.  (I assume it is about storing window positions and such.)

(Also, the configmgr code does not remember which values it originally read in
from registrymodifications.xcu, so that it cannot detect cases where the
changes committed by client code would not change the existing
registrymodifcations.xcu, and optimize those writes away.  The assumption is
that client code does not trigger such "unnecessary non-changes.")

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[Libreoffice-bugs] [Bug 92529] config written during startup ...

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Michael Meeks  changed:

   What|Removed |Added

 CC||sberg...@redhat.com

--- Comment #1 from Michael Meeks  ---
Stephan - do you expect that ? prolly a total non-issue, but looks odd =)

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[Libreoffice-bugs] [Bug 92529] config written during startup ...

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Michael Meeks  changed:

   What|Removed |Added

 Status|UNCONFIRMED |NEW
 Ever confirmed|0   |1

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