76932ea58323be0b875914396f83aa12bf3229f2 |
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07-Jan-2013 |
Vladimir Marko <vmarko@google.com> |
Use EmptyArray.STRING in Splitter.fastSplit(). This is a minor cleanup after https://android-review.googlesource.com/47964 Change-Id: Id8de6c09f3397b044082c275095ff7a7a43185f9
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fc28f29b0b7e6e295c8680a7e1b89e2d26fe61a7 |
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13-Dec-2012 |
Vladimir Marko <vmarko@google.com> |
Performance improvement in DiskLruCache.readJournalLine(). Speed up DiskLruCache.readJournalLine() by avoiding memory allocations from String.split(). For non-CLEAN lines, we avoid using String.split() altogether and find separators explicitly, for CLEAN lines we defer to String.split() and we optimize the underlying Splitter.fastSplit() overload to avoid unnecessary allocations itself. On a test journal with 7347 entries (1099 CLEAN) this saves about 45-50% from ~250ms. On a test journal with 272 entries (86 CLEAN) this saves about 35-40% from ~10ms. Measured loadJournal on GN in a tight loop (file contents cached). If used without the other DiskLruCache.readJournalLine() improvements, the Splitter.fastSplit() optimization alone would provide about 60% of the savings. It should also speed up other code outside the DiskLruCache. Change-Id: I1d6c6b13d54d8fcba3081f2bb9df701b58f5e143
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cec4dd4b1d33f78997603d0f89c0d0e56e64dbcd |
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26-Apr-2010 |
Peter Hallam <peterhal@google.com> |
merge more modules into luni
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