diff --git a/drain/segment.sql b/drain/segment.sql
index 9887ce2..9b37bbc 100644
--- a/drain/segment.sql
+++ b/drain/segment.sql
@@ -1,3 +1,6 @@
+SET threads = 2;
+SET memory_limit = '3GB';
+
 CREATE TABLE ev AS
   SELECT *, CASE WHEN kind = 'commit' THEN regexp_extract(collection, '^([^.]+\.[^.]+)', 1) ELSE '_' || kind END AS ns
   FROM read_csv('__WORK__/rows.tsv', delim = '\t', header = false,