https://bugs.freedesktop.org/show_bug.cgi?id=80955
Priority: medium
Bug ID: 80955
Keywords: regression
CC: [email protected], [email protected]
Assignee: [email protected]
Summary: XLS export perf. problem
Severity: major
Classification: Unclassified
OS: All
Reporter: [email protected]
Hardware: Other
Status: NEW
Version: 4.2.4.1 rc
Component: filters and storage
Product: LibreOffice
It seems (from the callgrind regression tests) that we have a significant
performance regression on master / 4.4.
Unfortunately this occurred during the period the performance testing was
disabled for some days - also it is not reproducible locally either - which is
a doubly royal pain. It seems that:
2014-06-25 14:01:19+02:00 db960181fe63efa28c2370505b2074d1db485e07
2014-07-03 20:42:10+02:00 628520684fafb1bcbf184ab8ed2f755c6ae9ee52
2014-07-04 14:09:44+02:00 dfeef9e970a69c5736a54619b96607899c57e9a1
In this range we went from:
11086
1383415
624715
pseudo-cycles converting 032_numbers.xls-convert - which seems a very
significant jump in time - 2x orders of magnitude.
In this time range though the most likely candidates also look like being my
fault ;-) perhaps:
commit e820df579d9be4c1f9bb1ad8f02a8072c69b52da
Author: Michael Meeks <[email protected]>
Date: Sat Jun 28 09:36:20 2014 +0100
filters: Batch fetch filter config properties.
Or the patch that changes the order of configmgr keys - so that they are no
longer sorted in the same order [ of course I'd -like- to think that filter
configuration is independent of key sort order but ... this is the filters code
].
http://dev-builds.libreoffice.org/callgrind_report/traces/
shows that all the time (some thousand trillion cycles) is spent in the XSLT
code - which (of course) shouldn't be triggered for this command:
cmd: /home/buildslave/build/instdir/program/soffice.bin --splash-pipe=0
--headless --convert-to xls --outdir tmp
/home/buildslave/source/test-files/loperf/032_numbers.xls
Converting XLS to XLS should use native filters in each direction. Kohei - you
were/are the next last person brave enough to touch the filter code =) any
advice here ?
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