CLUSTER cannot complete
Hello everyone,
Resolved, I've done:
hrs=# CLUSTER hosts_ip_idx ON hosts;
CLUSTER
hrs=#
hrs=#
hrs=# SELECT relpages * 8192 AS size_in_bytes, relname FROM pg_class
WHERE relnamespace = (SELECT oid FROM pg_namespace WHERE nspname =
'public') ORDER BY size_in_bytes DESC LIMIT 10;
size_in_bytes | relname
---------------+--------------------------------------
548864 | reservation
376832 | hosts
106496 | reservation_hosts
49152 | reservation_businessneed_idx
49152 | hosts_ip_idx
40960 | reservation_status_idx
40960 | reservation_hosts_reservation_id_idx
40960 | reservation_hosts_host_id_idx
40960 | hosts_hostname_idx
40960 | hosts_location_idx
(10 rows)
Why such a dramatic reduction in table size -- from 80MB to 0.55MB?!
I didn't add or delete many rows from that table. Quite a lot of UPDATEs
are running daily, though.
Regards,
mk
On Mon, Feb 15, 2010 at 9:54 AM, Marcin Krol <mrkafk@gmail.com> wrote:
I didn't add or delete many rows from that table. Quite a lot of UPDATEs are
running daily, though.
Every update is equal to insert + delete, except in certain
circumstances in 8.3 and above.
Vick Khera wrote:
On Mon, Feb 15, 2010 at 9:54 AM, Marcin Krol <mrkafk@gmail.com> wrote:
I didn't add or delete many rows from that table. Quite a lot of UPDATEs are
running daily, though.Every update is equal to insert + delete, except in certain
circumstances in 8.3 and above.
Well, it's still an insert + delete of the actual data row itself even
in 8.3, the later versions just optimize how that impacts the index
related changes there better.
--
Greg Smith 2ndQuadrant US Baltimore, MD
PostgreSQL Training, Services and Support
greg@2ndQuadrant.com www.2ndQuadrant.us