lib/PublicInbox/SearchIdx.pm | 2 +-

diff --git a/lib/PublicInbox/SearchIdx.pm b/lib/PublicInbox/SearchIdx.pm
index 6e44887d2651c2b20fef84e8a7d38369badf607e..7026fc4cbe76268aa443c5ee573f2860d4dfe02d 100644
--- a/lib/PublicInbox/SearchIdx.pm
+++ b/lib/PublicInbox/SearchIdx.pm
@@ -22,7 +22,7 @@ require PublicInbox::Git;
 use Compress::Zlib qw(compress);
 
 use constant {
-	BATCH_BYTES => 10_000_000,
+	BATCH_BYTES => 1_000_000,
 	DEBUG => !!$ENV{DEBUG},
 };