https://bz.apache.org/bugzilla/show_bug.cgi?id=58896
Bug ID: 58896
Summary: autoSizeColumn() is too slow
Product: POI
Version: unspecified
Hardware: PC
OS: Windows NT
Status: NEW
Severity: normal
Priority: P2
Component: HSSF
Assignee: [email protected]
Reporter: [email protected]
So, it goes without saying that a lot of people have complained about the
performance of autoSizeColumn(). I followed all the online advise about only
invoking this method once per column once the worksheet is fully populated, but
it is still extremely slow (30 seconds in POI, 1 second using the Excel GUI).
The worksheet I am formatting has 139 columns and 160 rows.
Is there an existing task for optimizing this function? Has anyone taken a
profiler to it and investigated if there are is any low-hanging fruit?
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