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get the most commonly used commands building again

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A quick benchmark of whereis shows not much speed improvement, maybe a
few percent. Profiling it found a hotspot, adds to todo.
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Joey Hess 2019-12-04 13:15:34 -04:00
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doc/todo/optimize_by_converting_String_to_ByteString.mdwn
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@ -14,9 +14,12 @@ the `bs` branch has quite a lot of things still needing work, including:
decodeBS conversions. Or at least most of them. There are likely
quite a few places where a value is converted back and forth several times.
As a first step, profile and look for the hot spots. For example, keyFile
uses fromRawFilePath and that adds around 3% overhead in `git-annex find`.
Converting it to a RawFilePath needs a version of `</>` for RawFilePaths.
As a first step, profile and look for the hot spots. Known hot spots:
* keyFile uses fromRawFilePath and that adds around 3% overhead in `git-annex find`.
Converting it to a RawFilePath needs a version of `</>` for RawFilePaths.
* getJournalFileStale uses fromRawFilePath, and adds 3-5% overhead in
`git-annex whereis`. Converting it to RawFilePath needs a version of `</>` for RawFilePaths.
* System.FilePath is not available for RawFilePath, and many of the
conversions are to get a FilePath in order to use that library.