diff --git a/Command/AddComputed.hs b/Command/AddComputed.hs
index 9ff13f1f70..f27932405e 100644
--- a/Command/AddComputed.hs
+++ b/Command/AddComputed.hs
@@ -21,11 +21,9 @@ import Types.KeySource
 import Messages.Progress
 import Logs.Location
 import Utility.Metered
-import Utility.MonotonicClock
 import Backend.URL (fromUrl)
 
 import qualified Data.Map as M
-import Data.Time.Clock
 
 cmd :: Command
 cmd = notBareRepo $ 
@@ -92,17 +90,14 @@ perform o r = do
 		, Remote.Compute.computeReproducible = False
 		}
 	fast <- Annex.getRead Annex.fast
-	starttime <- liftIO currentMonotonicTimestamp
 	showOutput
 	Remote.Compute.runComputeProgram program state
 		(Remote.Compute.ImmutableState False)
 		(getInputContent fast)
-		(go starttime fast)
+		(go fast)
 	next $ return True
   where
-	go starttime fast state tmpdir = do
-		endtime <- liftIO currentMonotonicTimestamp
-		let ts = calcduration starttime endtime
+	go fast state tmpdir ts = do
 		let outputs = Remote.Compute.computeOutputs state
 		when (M.null outputs) $
 			giveup "The computation succeeded, but it did not generate any files."
@@ -151,9 +146,6 @@ perform o r = do
 		, checkWritePerms = True
 		}
 	
-	calcduration (MonotonicTimestamp starttime) (MonotonicTimestamp endtime) =
-		fromIntegral (endtime - starttime) :: NominalDiffTime
-	
 	isreproducible state = case reproducible o of
 		Just v -> isReproducible v
 		Nothing -> Remote.Compute.computeReproducible state
diff --git a/Command/Recompute.hs b/Command/Recompute.hs
index 95f8f3e16f..42a313ee75 100644
--- a/Command/Recompute.hs
+++ b/Command/Recompute.hs
@@ -10,26 +10,21 @@
 module Command.Recompute where
 
 import Command
-import qualified Git
 import qualified Annex
 import qualified Remote.Compute
 import qualified Remote
 import qualified Types.Remote as Remote
 import Annex.CatFile
-import Annex.Content.Presence
 import Annex.Ingest
 import Git.FilePath
-import Types.RemoteConfig
 import Types.KeySource
 import Messages.Progress
 import Logs.Location
 import Utility.Metered
-import Utility.MonotonicClock
 import Backend.URL (fromUrl)
 import Command.AddComputed (Reproducible(..), parseReproducible, getInputContent)
 
 import qualified Data.Map as M
-import Data.Time.Clock
 
 cmd :: Command
 cmd = notBareRepo $ 
@@ -127,12 +122,11 @@ perform o r file key oldstate = do
 		, Remote.Compute.computeOutputs = mempty
 		}
 	fast <- Annex.getRead Annex.fast
-	starttime <- liftIO currentMonotonicTimestamp
 	showOutput
 	Remote.Compute.runComputeProgram program recomputestate
 		(Remote.Compute.ImmutableState False)
 		(getinputcontent program fast)
-		(go starttime fast)
+		(go fast)
 	next $ return True
   where
 	getinputcontent program fast p
@@ -143,9 +137,7 @@ perform o r file key oldstate = do
 					"requesting a new input file" p
 		| otherwise = getInputContent fast p
 	
-	go starttime fast state tmpdir = do
-		endtime <- liftIO currentMonotonicTimestamp
-		let ts = calcduration starttime endtime
+	go fast state tmpdir ts = do
 		let outputs = Remote.Compute.computeOutputs state
 		when (M.null outputs) $
 			giveup "The computation succeeded, but it did not generate any files."
@@ -194,9 +186,6 @@ perform o r file key oldstate = do
 		, checkWritePerms = True
 		}
 	
-	calcduration (MonotonicTimestamp starttime) (MonotonicTimestamp endtime) =
-		fromIntegral (endtime - starttime) :: NominalDiffTime
-	
 	isreproducible state = case reproducible o of
 		Just v -> isReproducible v
 		Nothing -> Remote.Compute.computeReproducible state
diff --git a/Remote/Compute.hs b/Remote/Compute.hs
index b412fc4df6..e3ec2a8fdd 100644
--- a/Remote/Compute.hs
+++ b/Remote/Compute.hs
@@ -41,6 +41,7 @@ import Utility.TimeStamp
 import Utility.Env
 import Utility.Tmp.Dir
 import Utility.Url
+import Utility.MonotonicClock
 import qualified Git
 import qualified Utility.SimpleProtocol as Proto
 
@@ -338,7 +339,7 @@ runComputeProgram
 	-> ComputeState
 	-> ImmutableState
 	-> (OsPath -> Annex (Key, Maybe OsPath))
-	-> (ComputeState -> OsPath -> Annex v)
+	-> (ComputeState -> OsPath -> NominalDiffTime -> Annex v)
 	-> Annex v
 runComputeProgram (ComputeProgram program) state (ImmutableState immutablestate) getinputcontent cont =
 	withOtherTmp $ \othertmpdir ->
@@ -353,11 +354,13 @@ runComputeProgram (ComputeProgram program) state (ImmutableState immutablestate)
 			 , std_out = CreatePipe
 			 , env = Just environ
 			 }
+		starttime <- liftIO currentMonotonicTimestamp
 		state' <- bracket
 			(liftIO $ createProcess pr)
 			(liftIO . cleanupProcess)
 			(getinput state tmpdir subdir)
-		cont state' subdir
+		endtime <- liftIO currentMonotonicTimestamp
+		cont state' subdir (calcduration starttime endtime)
 		
 	getsubdir tmpdir = do
 		let subdir = tmpdir </> computeSubdir state
@@ -435,6 +438,9 @@ runComputeProgram (ComputeProgram program) state (ImmutableState immutablestate)
 	checkimmutable False requestdesc p a
 		| not immutablestate = a
 		| otherwise = computationBehaviorChangeError (ComputeProgram program) requestdesc p
+	
+	calcduration (MonotonicTimestamp starttime) (MonotonicTimestamp endtime) =
+		fromIntegral (endtime - starttime) :: NominalDiffTime
 
 computationBehaviorChangeError :: ComputeProgram -> String -> OsPath -> Annex a
 computationBehaviorChangeError (ComputeProgram program) requestdesc p =
@@ -469,7 +475,7 @@ computeKey rs (ComputeProgram program) k af dest p vc =
 			(keyfile : _) -> Just keyfile
 			[] -> Nothing
 
-	go keyfile state tmpdir = do
+	go keyfile state tmpdir ts = do
 		let keyfile' = tmpdir </> keyfile
 		unlessM (liftIO $ doesFileExist keyfile') $
 			giveup $ program ++ " exited sucessfully, but failed to write the computed file"