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From li zhang <>
Subject [call for review] Two fixes about performance improvement(xls and odt saving)
Date Tue, 10 Jul 2012 05:37:51 GMT
hi, all
I have two fixes need for review. Please check the below for details,

One is about xls saving:

root cause:
All chart will be persisted as xml format on disk when xls saving, which is
time consuming.
If the chart has not been modified, then no need to update the persist
files redundantly.  Do not call storeOwn() when not necessary.

Another is about odt saving:

you can also refer to the wiki :

root cause:
>From profiling data, a document(with many graphics) is to be found that
graphics will be swapped out and swapped in so frequently when saving.

GraphicCache can be used to optimized this problem, graphics can be cached
a while when haven't exceed the cache size. For grapchic size hasn't been
used and set limit on it.

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