diff --git a/backend/src/app/srepl/main.clj b/backend/src/app/srepl/main.clj
index 04f3b16a19..e7de3aac1f 100644
--- a/backend/src/app/srepl/main.clj
+++ b/backend/src/app/srepl/main.clj
@@ -555,8 +555,10 @@
   [& {:keys [max-jobs
              rollback?
              max-chunks
+             chunk-size
              proc-fn]
       :or {max-chunks Long/MAX_VALUE
+           chunk-size 100
            rollback? true}
       :as opts}]
 
@@ -565,6 +567,13 @@
         max-chunks (max max-chunks max-jobs)
         processed  (atom 0)
 
+        opts       (-> opts
+                       (assoc :chunk-size chunk-size)
+                       (dissoc :rollback?)
+                       (dissoc :proc-fn)
+                       (dissoc :max-jobs)
+                       (dissoc :max-chunks))
+
         start-job
         (fn [jid]
           (l/dbg :hint "start job thread" :jid jid)
@@ -587,6 +596,10 @@
            :max-jobs max-jobs
            :max-chunks max-chunks)
 
+    (add-watch processed ::watch
+               (fn [_ _ _ v]
+                 (l/dbg :hint "total chunks processed" :chunks v :items (* chunk-size v))))
+
     (try
       (let [jobs (->> (range max-jobs)
                       (map (fn [jid] (px/fn->thread (partial start-job jid))))