# Difference between the available splitters

**URL:** <https://kopia.discourse.group/t/difference-between-the-available-splitters/894>\
**Category:** General\
**Created:** [January 31, 2022, 4:01pm UTC](https://kopia.discourse.group/t/difference-between-the-available-splitters/894 "2022-01-31T16:01:26Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![josef](https://avatars.discourse-cdn.com/v4/letter/j/ec9cab/32.png) [@josef](https://kopia.discourse.group/u/josef)\
**Post date:** [January 31, 2022, 9:24pm UTC](https://kopia.discourse.group/t/difference-between-the-available-splitters/894/2 "2022-01-31T21:24:04Z")

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Maybe you find some information in this thread:

> [@Low read performance per distinct hashing process](https://kopia.discourse.group/t/low-read-performance-per-distinct-hashing-process/90/18):
>
> FWIW fixed splitters are not ideal if you have files that are partially modified as they don’t perform content-based splitting. So if you have a large video file (say 10 GB) and add one byte somewhere at the beginning (for example by changing embedded text metadata), fixed splitter will need to reupload 10 GB. content-based splitters (buzhash and rabin karp) will detect the change and typically only need to upload one or two chunks (\<10MB total). Fixed splitter will be much faster, though.

Best seems to be the one with the lowest timespan.  
Not sure why you see 0ms on all FIXED splitters though.

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