https://bugs.freedesktop.org/show_bug.cgi?id=57530
Priority: medium
Bug ID: 57530
CC: [email protected], [email protected]
Assignee: [email protected]
Summary: FILEOPEN XLS: Severe performance regressions in LO
compared to Open Office 3.3.0
Severity: normal
Classification: Unclassified
OS: All
Reporter: [email protected]
Hardware: All
Status: UNCONFIRMED
Version: 4.0.0.0.alpha0+ Master
Component: Spreadsheet
Product: LibreOffice
Contrary to claims that LO is faster than Open Office, in some of my real world
test cases I find rather severe performance regressions in recent versions of
LO Calc.
Test case: Excel 97 Spreadsheet with 3 sheets containing 4 time series of
12.000 measurements each, and 3 sheets with X-Y graphs of this data.
The file contains confidential information, so it can't be posted publicly on
fdo. It may be sent privately to Calc devs and QA folks
This file will load in less than 2 seconds in Excel 97 or Excel 2007 on any
machine I ever tested.
I converted this file to ods in Open Office Calc 3.3.0.
Average load times (seconds) XLS ODS
- OOo 3.3.0 46 15
- LibO 3.6.3.1 83 17
- LibO 4.0.0 alpha *) 91 39
*) Version 4.0.0.0.alpha1+ (Build ID: 81e4968fdde5bfc68e916db25d43125631daa97),
daily build 25-11-2012.
All tests done on Windows XP Professional SP 3, Pentium D, 2.8 GHz, 1 GB
internal memory.Average load times excluding loading of Calc, and excluding
first load time.
Similar performance regressions witnessed on a 64-bit openSuSE system with
quad-core processor and 4 GB of memory.
Although some of my recent debug builds of LibOdev (up to the recent numbering
change from 3.7 -> 4.0) where significantly faster than these alpha builds.
Calc 3.3.0 is already considered unworkably slow by some of my colleagues at
the office, and I can't really blame them.
Needles to say we will not be deploying LibO anytime soon...
@kohei: Seems like a nice test case for your Orcus library.
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