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wip RawFilePath 2x git-annex find speedup

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Finally builds (oh the agoncy of making it build), but still very
unmergable, only Command.Find is included and lots of stuff is badly
hacked to make it compile.

Benchmarking vs master, this git-annex find is significantly faster!
Specifically:

	num files	old	new	speedup
	48500		4.77	3.73	28%
	12500		1.36	1.02	66%
	20		0.075	0.074	0% (so startup time is unchanged)

That's without really finishing the optimization. Things still to do:

* Eliminate all the fromRawFilePath, toRawFilePath, encodeBS,
  decodeBS conversions.
* Use versions of IO actions like getFileStatus that take a RawFilePath.
* Eliminate some Data.ByteString.Lazy.toStrict, which is a slow copy.
* Use ByteString for parsing git config to speed up startup.

It's likely several of those will speed up git-annex find further.
And other commands will certianly benefit even more.
This commit is contained in:
Joey Hess 2019-11-26 15:27:22 -04:00
parent 6a97ff6b3a
commit 067aabdd48
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GPG key ID: DB12DB0FF05F8F38
61 changed files with 380 additions and 296 deletions
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7
P2P/Protocol.hs
View file

@ -22,6 +22,7 @@ import Utility.AuthToken
import Utility.Applicative
import Utility.PartialPrelude
import Utility.Metered
import Utility.FileSystemEncoding
import Git.FilePath
import Annex.ChangedRefs (ChangedRefs)
@ -166,17 +167,17 @@ instance Proto.Serializable Service where
instance Proto.Serializable AssociatedFile where
serialize (AssociatedFile Nothing) = ""
serialize (AssociatedFile (Just af)) =
toInternalGitPath $ concatMap esc af
decodeBS' $ toInternalGitPath $ encodeBS' $ concatMap esc $ fromRawFilePath af
where
esc '%' = "%%"
esc c
| isSpace c = "%"
| otherwise = [c]
deserialize s = case fromInternalGitPath $ deesc [] s of
deserialize s = case fromRawFilePath $ fromInternalGitPath $ toRawFilePath $ deesc [] s of
[] -> Just (AssociatedFile Nothing)
f
| isRelative f -> Just (AssociatedFile (Just f))
| isRelative f -> Just $ AssociatedFile $ Just $ toRawFilePath f
| otherwise -> Nothing
where
deesc b [] = reverse b