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------- Additional comments from [email protected] Mon Feb 15 14:59:51 
+0000 2010 -------
Same problem here! We do data gathering from large xls-files (1.5 to 3 MB) on a
Linux server using OOo calc (many thousands xls files) and feed the extracted
csv-data into a database.
But now may be getting forced to change to a Windows environment ;-( due to very
poor performance.

E.g.: xls sample file (2.5 MB, no charts - only formula and text, 3x ~30k jpgs)

Some Benchmarks (opening the xls until content is visible/usable; no macros
executed):

OOo 2.4, Ubuntu 8.04 LTS (Xenon multicore cpu, 8MB RAM): 10+ MINUTES
OOo 3.1, Ubuntu 9.10 Desktop (AMD multicore, 4GB RAM): 8 to 15 minutes (time
varies with the same testfile!?)
OOo 3.2, Ubuntu 9.10 NBR (Asus Eee PC 1005H, 2GB RAM): ~3 minutes
(=> OOo 3.2 is ~3x faster here than 3.1, even on an very small computer)

M$ Excel (Office 10/XP), Win XP, (Laptop 1.2Ghz cpu, 1GB RAM): 3-5 seconds
M$ Excel 2004, OS-X, (MacBook Pro 2.5Ghz, 4GB): 10 seconds

Performance gap OOo Calc : Excel (Minutes vs. Seconds!) =~ 200 : 1

Performance is not dependend on auto_open macros or external file references.
Performance degrades tremendiously if files getting larger.

I am not able to upload a sample file here (customer property), but will be glad
to send one as personal email if needed.

BTW: Out of curiosity i've done a "strace -t -f scalc sample.xls" and have seen
a lot of "Resource temporarily unavailable"-messages, but can't conclude if this
has to do with the performance issues regarding opening large xls-files.

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