https://bugs.documentfoundation.org/show_bug.cgi?id=97177
--- Comment #33 from Julien Nabet <[email protected]> ---
Created attachment 162304
--> https://bugs.documentfoundation.org/attachment.cgi?id=162304&action=edit
perf flamegraph
Here's a Flamegraph retrieved on pc Debian x86-64 with master sources updated
today (after
https://cgit.freedesktop.org/libreoffice/core/commit/?id=aabcf90da9a90240bddc140485f210dcab66724c:
"tdf#97177 speedup loading of large ODS file
drop ScSimpleRangeList and just use ScRangeList, which saves us a
conversion step.
Then teach ScRangeList to do a simple merge, since we are loading in row
order, and can just check the last few entries.
Then fix a case of optimisation doing the wrong thing in
ScAttrArray::SetPatternAreaImpl where std::vector::reserve repeatedly
resizes the data array and breaks the normal doubling-resizing inside
vector.
On my machine the time goes from 5.4s to 4.8s")
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