qa: descrease pgbench scale factor to 32 for postgresql database test

The scale factor will depend on the node's performance and disk sizes
being used to run the test, and 500 seems too large here as a common
test case without knowing the nodes' configuration.

We should just follow the white-book:
https://github.com/ApsaraDB/PolarDB-for-PostgreSQL/blob/distributed/doc/polardb/benchmark.md

Fixes: https://tracker.ceph.com/issues/62700
Signed-off-by: Xiubo Li <xiubli@redhat.com>

diff --git a/qa/suites/fs/workload/tasks/5-workunit/postgres.yaml b/qa/suites/fs/workload/tasks/5-workunit/postgres.yaml
index 12a84a9ba7c98c47250a17794dd556356cea44bf..7e71dbc884da73f2ce0598e15abefe94beaeeb9a 100644 (file)
--- a/qa/suites/fs/workload/tasks/5-workunit/postgres.yaml
+++ b/qa/suites/fs/workload/tasks/5-workunit/postgres.yaml
@@ -30,7 +30,7 @@ tasks:
       - sudo -u postgres -- postgresql-setup --initdb
       - sudo ls -lZaR /tmp/cephfs/postgres/
       - sudo systemctl start postgresql
-      - sudo -u postgres -- pgbench -s 500 -i
+      - sudo -u postgres -- pgbench -s 32 -i
       - sudo -u postgres -- pgbench -c 100 -j 4 --progress=5 --time=900
       - sudo systemctl stop postgresql
       - sudo ls -lZaR /tmp/cephfs/postgres/