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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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3
Types/Key.hs
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@ -36,6 +36,7 @@ import Data.ByteString.Builder
import Data.ByteString.Builder.Extra
import qualified Data.Attoparsec.ByteString as A
import qualified Data.Attoparsec.ByteString.Char8 as A8
import Utility.FileSystemEncoding
import Data.List
import System.Posix.Types
import Foreign.C.Types
@ -200,7 +201,7 @@ splitKeyNameExtension' :: S.ByteString -> (S.ByteString, S.ByteString)
splitKeyNameExtension' keyname = S8.span (/= '.') keyname
{- A filename may be associated with a Key. -}
newtype AssociatedFile = AssociatedFile (Maybe FilePath)
newtype AssociatedFile = AssociatedFile (Maybe RawFilePath)
deriving (Show, Eq, Ord)
{- There are several different varieties of keys. -}