diff --git a/config/settings.yml b/config/settings.yml
index 252507577..9524f75b2 100644
--- a/config/settings.yml
+++ b/config/settings.yml
@@ -161,8 +161,8 @@ upload-cache:
   disable-cert-validation: "_env:UPLOAD_S3_DISABLE_CERT_VALIDATION:false"
 upload-cache-bucket: "uni2work-uploads"
 
-inject-files: 307
-rechunk-files: 601
+inject-files: 601
+rechunk-files: 1201
 
 file-upload-db-chunksize: 4194304 # 4MiB
 file-chunking-target-exponent: 21 # 2MiB
diff --git a/src/Jobs.hs b/src/Jobs.hs
index d461b539b..37428a84c 100644
--- a/src/Jobs.hs
+++ b/src/Jobs.hs
@@ -454,10 +454,14 @@ handleJobs' wNum = C.mapM_ $ \jctl -> hoist delimitInternalState . withJobWorker
     handleQueueException (JNonexistant jId) = $logInfoS logIdent $ "Saw nonexistant queue id: " ++ tshow (fromSqlKey jId)
     handleQueueException (JLocked jId lInstance lTime)  = $logDebugS logIdent $ "Saw locked QueuedJob: " ++ tshow (fromSqlKey jId, lInstance, lTime)
 
+    handleCmd :: JobCtl -> ReaderT JobContext Handler ()
     handleCmd JobCtlTest = $logDebugS logIdent "JobCtlTest"
     handleCmd JobCtlFlush = do
       $logDebugS logIdent "JobCtlFlush..."
-      void . lift . runDB . runConduit $ selectKeys [] [ Asc QueuedJobCreationTime ] .| C.mapM_ (\j -> lift $ runReaderT (writeJobCtl $ JobCtlPerform j) =<< getYesod)
+      heldLocks <- asks jobHeldLocks >>= readTVarIO
+      void . lift . runDB . runConduit
+        $ selectKeys [ QueuedJobId /<-. Set.toList heldLocks ] [ Asc QueuedJobCreationTime ]
+       .| C.mapM_ (\j -> lift $ runReaderT (writeJobCtl $ JobCtlPerform j) =<< getYesod)
       $logInfoS logIdent "JobCtlFlush"
     handleCmd (JobCtlQueue job) = do
       $logDebugS logIdent "JobCtlQueue..."
diff --git a/src/Jobs/Handler/Files.hs b/src/Jobs/Handler/Files.hs
index fa1eec303..2648edd05 100644
--- a/src/Jobs/Handler/Files.hs
+++ b/src/Jobs/Handler/Files.hs
@@ -1,3 +1,5 @@
+{-# OPTIONS_GHC -Wno-error=deprecations #-}
+
 {-# LANGUAGE BangPatterns #-}
 
 module Jobs.Handler.Files
@@ -238,26 +240,33 @@ dispatchJobInjectFiles = JobHandlerException . maybeT (return ()) $ do
         logger <- askLoggerIO
         didSend <- maybeT (return False) . hoistMaybeM . runAppMinio . runMaybeT $ do
           objRes <- catchIfMaybeT minioIsDoesNotExist $ Minio.getObject uploadBucket obj Minio.defaultGetObjectOptions
-          let sendChunks = go 0 0 Nothing . toNanoSecs =<< liftIO (getTime Monotonic)
+          let sendChunks = go 0 0 Nothing =<< liftIO (getTime Monotonic)
                 where
-                  go :: forall m. MonadIO m => Natural -> Int64 -> Maybe Integer -> Integer -> ConduitT ByteString Void m ()
+                  go :: forall m. MonadIO m => Natural -> Int64 -> Maybe TimeSpec -> TimeSpec -> ConduitT ByteString Void m ()
                   go c accsz lastReport startT = do
-                    currT <- liftIO $ toNanoSecs <$> getTime Monotonic
+                    currT <- liftIO $ getTime Monotonic
                     chunk' <- await
                     whenIsJust chunk' $ \chunk -> do
                       let csz = fromIntegral $ olength chunk
-                          !sz' = accsz + csz
-                          p :: Centi
-                          p = realToFrac $ (toInteger sz' % toInteger sz) * 100
                           !c' = succ c
-                          eta :: Integer
-                          eta = ceiling $ ((toRational currT - toRational startT) / toRational accsz) * toRational (sz - fromIntegral accsz)
+                          !sz' = accsz + csz
                           !lastReport'
-                            | currT - fromMaybe startT lastReport > 5e9 = Just currT
+                            | toRational currT - toRational (fromMaybe startT lastReport) > 5 = Just currT
                             | otherwise = lastReport
-                      when (lastReport' /= lastReport) $
-                        runLoggingT ?? logger $ $logInfoS "InjectFiles" [st|Sinking chunk ##{tshow c} (#{textBytes csz}): #{textBytes sz'}/#{textBytes sz} (#{tshow p}%) ETA #{textDuration eta}...|]
-                      atomically . putTMVar chunkVar $ Just chunk
+                      when (csz > 0) $ do
+                        let p :: Centi
+                            p = realToFrac $ (toInteger sz' % toInteger sz) * 100
+                            eta :: Maybe Integer
+                            eta = do
+                              accsz' <- assertM' (/= 0) accsz
+                              return . ceiling $ (toRational currT - toRational startT) / (fromIntegral accsz') * (fromIntegral sz - fromIntegral accsz)
+                        when (lastReport' /= lastReport || sz' >= fromIntegral sz) $
+                          flip runLoggingT logger . $logInfoS "InjectFiles" . mconcat $ catMaybes
+                            [ pure [st|Sinking chunk ##{tshow c} (#{textBytes csz}): #{textBytes sz'}/#{textBytes sz} (#{tshow p}%)|]
+                            , eta <&> \eta' -> [st| ETA #{textDuration eta'}|]
+                            , pure "..."
+                            ]
+                        atomically . putTMVar chunkVar $ Just chunk
                       go c' sz' lastReport' startT
           lift . runConduit $ Minio.gorObjectStream objRes .| sendChunks
           return True
@@ -279,7 +288,7 @@ dispatchJobInjectFiles = JobHandlerException . maybeT (return ()) $ do
               .| maybe (C.map id) (takeWhileTime . (/ 2)) interval
               .| transPipe (lift . runDB . setSerializable) (persistentTokenBucketTakeC' TokenBucketInjectFiles $ views _1 Minio.oiSize)
               .| C.mapM (lift . injectOrDelete)
-              .| C.mapM (\res@(Sum inj, Sum sz) -> res <$ observeRechunkedFiles inj sz)
+              .| C.mapM (\res@(Sum inj, Sum sz) -> res <$ observeInjectedFiles inj sz)
               .| C.fold
 
   $logInfoS "InjectFiles" [st|Injected #{tshow injectedFiles} files from upload cache into database (#{textBytes injectedSize})|]
diff --git a/src/Utils/Metrics.hs b/src/Utils/Metrics.hs
index 16c6f994c..f9cfc0b2e 100644
--- a/src/Utils/Metrics.hs
+++ b/src/Utils/Metrics.hs
@@ -78,7 +78,7 @@ httpRequestLatency :: Vector Label3 Histogram
 httpRequestLatency = unsafeRegister . vector ("handler", "method", "status") $ histogram info buckets
   where info = Info "http_request_duration_seconds"
                     "HTTP request latency"
-        buckets = histogramBuckets 50e-6 500
+        buckets = histogramBuckets 50e-6 5000
 
 data ReadySince = MkReadySince