Same query taking less time in low configuration machine
| От | Vishwa Kalyankar |
|---|---|
| Тема | Same query taking less time in low configuration machine |
| Дата | |
| Msg-id | CAFWaVn3D2d_15otF=kC8X=ECSAv0rhcccp_bK_7SqLj9UsK8TA@mail.gmail.com обсуждение исходный текст |
| Ответы |
Re: Same query taking less time in low configuration machine
Re: Same query taking less time in low configuration machine |
| Список | pgsql-general |
Hi,
I have two machines - one with 8GB RAM & 4core CPU and the other with 64GB Ram & 24 core CPU. Both machines have the same DB (Postgres 12 + Postgis 2.5.3). Same query is taking less time in low end machine whereas more time in high end machine. Any thoughts on where to look? I have tuned the db in both machines according to https://pgtune.leopard.in.ua/#/
Below I am pasting the output of query explain in both the machines.
-bash-4.2$ psql -p 5434
psql (12.3)
Type "help" for help.
postgres=# \c IPDS_KSEB;
You are now connected to database "IPDS_KSEB" as user "postgres".
IPDS_KSEB=# explain analyze select * from kseb_geometry_trace_with_barrier_partition(5,'kottarakara_version',437,'htline',2) ;
QUERY PLAN
---------------------------------------------------------------------------------------------------------------------------------------------------------
Function Scan on kseb_geometry_trace_with_barrier_partition (cost=0.25..10.25 rows=1000 width=169) (actual time=11626.548..11626.568 rows=254 loops=1)
Planning Time: 0.212 ms
Execution Time: 11628.590 ms
psql (12.3)
Type "help" for help.
postgres=# \c IPDS_KSEB;
You are now connected to database "IPDS_KSEB" as user "postgres".
IPDS_KSEB=# explain analyze select * from kseb_geometry_trace_with_barrier_partition(5,'kottarakara_version',437,'htline',2) ;
QUERY PLAN
---------------------------------------------------------------------------------------------------------------------------------------------------------
Function Scan on kseb_geometry_trace_with_barrier_partition (cost=0.25..10.25 rows=1000 width=169) (actual time=11626.548..11626.568 rows=254 loops=1)
Planning Time: 0.212 ms
Execution Time: 11628.590 ms
-bash-4.2$ psql -p 5422
psql (12.3)
Type "help" for help.
postgres=# \c IPDS_KSEB;
You are now connected to database "IPDS_KSEB" as user "postgres".
IPDS_KSEB=# explain analyze select * from kseb_geometry_trace_with_barrier_partition(5,'kottarakara_version',437,'htline',2) ;
QUERY PLAN
---------------------------------------------------------------------------------------------------------------------------------------------------------
Function Scan on kseb_geometry_trace_with_barrier_partition (cost=0.25..10.25 rows=1000 width=169) (actual time=22304.425..22304.448 rows=254 loops=1)
Planning Time: 0.219 ms
Execution Time: 22352.219 ms
(3 rows)
psql (12.3)
Type "help" for help.
postgres=# \c IPDS_KSEB;
You are now connected to database "IPDS_KSEB" as user "postgres".
IPDS_KSEB=# explain analyze select * from kseb_geometry_trace_with_barrier_partition(5,'kottarakara_version',437,'htline',2) ;
QUERY PLAN
---------------------------------------------------------------------------------------------------------------------------------------------------------
Function Scan on kseb_geometry_trace_with_barrier_partition (cost=0.25..10.25 rows=1000 width=169) (actual time=22304.425..22304.448 rows=254 loops=1)
Planning Time: 0.219 ms
Execution Time: 22352.219 ms
(3 rows)
В списке pgsql-general по дате отправления: