[Libreoffice-bugs] [Bug 115829] Search and replace is slow in a large document compared to LibO5.0.0.1

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=115829

V Stuart Foote  changed:

   What|Removed |Added

   See Also||https://bugs.documentfounda
   ||tion.org/show_bug.cgi?id=11
   ||6835

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[Libreoffice-bugs] [Bug 115829] Search and replace is slow in a large document compared to LibO5.0.0.1

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=115829

--- Comment #13 from Eike Rathke  ---
(In reply to Buovjaga from comment #11)
> Well, I don't understand why this should suddenly turn to be about
> diacritics, but maybe Eike can elaborate.
Because when ignoring diacritics (Diacritic-sensitive not checked) an extra
transliteration is applied to all text to be searched that decomposes the
Unicode character string to remove the diacritics and keep the base letter, for
example Äpfel -> A"pfel -> Apfel, and that is a heavy operation for large
amounts of text. When replacing text it may get even worse because (a quite
awkward implementation of) an indexed sequence is set up to be able to map
search positions to replace positions.

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[Libreoffice-bugs] [Bug 115829] Search and replace is slow in a large document compared to LibO5.0.0.1

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=115829

Telesto  changed:

   What|Removed |Added

   Keywords|bibisectRequest |
 Status|NEW |RESOLVED
 Resolution|--- |DUPLICATE

--- Comment #12 from Telesto  ---
Diacritic-sensitive will be checked by default bug 116242 comment 10..

*** This bug has been marked as a duplicate of bug 116242 ***

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[Libreoffice-bugs] [Bug 115829] Search and replace is slow in a large document compared to LibO5.0.0.1

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=115829

--- Comment #11 from Buovjaga  ---
(In reply to Timur from comment #10)
> Is this a dupe of bug 116242 then?

Well, I don't understand why this should suddenly turn to be about diacritics,
but maybe Eike can elaborate.

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[Libreoffice-bugs] [Bug 115829] Search and replace is slow in a large document compared to LibO5.0.0.1

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=115829

--- Comment #10 from Timur  ---
Is this a dupe of bug 116242 then?

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[Libreoffice-bugs] [Bug 115829] Search and replace is slow in a large document compared to LibO5.0.0.1

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=115829

--- Comment #9 from Buovjaga  ---
(In reply to Eike Rathke from comment #7)
> Please check again with the fix for bug 116242 and
> under Options enable Diacritic-sensitive once.

Without checking the box it is the same (1 min 40 sec).
Checking the box lowers the time to 21 secs.

Arch Linux 64-bit
Version: 6.1.0.0.alpha0+
Build ID: b8fe96f1da2c42c04a8094ca8c57d49763b7bded
CPU threads: 8; OS: Linux 4.15; UI render: default; VCL: kde4; 
Locale: fi-FI (fi_FI.UTF-8); Calc: group
Built on March 8th 2018

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[Libreoffice-bugs] [Bug 115829] Search and replace is slow in a large document compared to LibO5.0.0.1

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=115829

--- Comment #8 from Telesto  ---
Diacritic-sensitive enabled = decent speed
Diacritic-sensitive disabled = painfully show

However, Diacritic-sensitive is disabled by default and not an obvious checkbox
to use..

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[Libreoffice-bugs] [Bug 115829] Search and replace is slow in a large document compared to LibO5.0.0.1

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=115829

--- Comment #7 from Eike Rathke  ---
I believe that for 6.1 and 6.0 this is at least partly due to diacritic
transliteration always being enabled, see bug 116242 as a fallout of the change
for bug 111846. Please check again with the fix for bug 116242 and under
Options enable Diacritic-sensitive once.

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[Libreoffice-bugs] [Bug 115829] Search and replace is slow in a large document compared to LibO5.0.0.1

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=115829

Telesto  changed:

   What|Removed |Added

 Blocks||113510


Referenced Bugs:

https://bugs.documentfoundation.org/show_bug.cgi?id=113510
[Bug 113510] [META] Bugs that cause CPU to run at 100%
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[Libreoffice-bugs] [Bug 115829] Search and replace is slow in a large document compared to LibO5.0.0.1

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=115829

--- Comment #6 from Buovjaga  ---
Created attachment 14
  --> https://bugs.documentfoundation.org/attachment.cgi?id=14=edit
Example document reduced to 24 pages

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[Libreoffice-bugs] [Bug 115829] Search and replace is slow in a large document compared to LibO5.0.0.1

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=115829

--- Comment #5 from Buovjaga  ---
Created attachment 13
  --> https://bugs.documentfoundation.org/attachment.cgi?id=13=edit
Callgrind output from master

I should have reduced the document some more before doing it... it replaced
about 2000 times.

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[Libreoffice-bugs] [Bug 115829] Search and replace is slow in a large document compared to LibO5.0.0.1

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=115829

Buovjaga  changed:

   What|Removed |Added

   Keywords||perf
 Status|UNCONFIRMED |NEW
 Ever confirmed|0   |1
 OS|Windows (All)   |All

--- Comment #4 from Buovjaga  ---
I confirm the slowness. In 6.1 with the big document it took 1 min 40 secs.
With 3.6 it took 22 secs.

Arch Linux 64-bit
Version: 6.1.0.0.alpha0+
Build ID: c902cbc7dc5294ab721a9aef3a152aa243d00011
CPU threads: 8; OS: Linux 4.15; UI render: default; VCL: kde4; 
Locale: fi-FI (fi_FI.UTF-8); Calc: group
Built on February 17th 2018

Arch Linux 64-bit
Version 3.6.7.2 (Build ID: e183d5b)

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[Libreoffice-bugs] [Bug 115829] Search and replace is slow in a large document compared to LibO5.0.0.1

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=115829

Telesto  changed:

   What|Removed |Added

 CC||todven...@suomi24.fi

--- Comment #3 from Telesto  ---
@buovjaga
A valgrind trace would be nice, after conformation of course.. And don't use
the full document, would take ages ;-)

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[Libreoffice-bugs] [Bug 115829] Search and replace is slow in a large document compared to LibO5.0.0.1

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=115829

Telesto  changed:

   What|Removed |Added

Summary|Search and replace is slow  |Search and replace is slow
   |in a large document |in a large document
   ||compared to LibO5.0.0.1

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