On Sat, Apr 16, 2005 at 07:37:02PM +0200, Martin Uecker wrote: > On Sat, Apr 16, 2005 at 11:11:00AM -0400, C. Scott Ananian wrote: > > The rsync approach does not use fixed chunk boundaries; this is necessary > > to ensure good storage reuse for the expected case (ie; inserting a single > > line at the start or in the middle of the file, which changes all the > > chunk boundaries). > > Yes. The chunk boundaries should be determined deterministically > from local properties of the data. Use a rolling checksum over > some small window and split the file it it hits a special value (0). > This is what the rsyncable patch to zlib does.
This is certainly uninteresting for source code repositories but for people who manage repositories of rsyncable binary packages this would save a lot of space, bandwidth and cpu time (compared to rsync because the scanning phase is not necessary anymore). Martin -- One night, when little Giana from Milano was fast asleep, she had a strange dream.
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