"table1" structure :
id integer not null
code integer not null
crid integer not null
status character varying(1) default 'A'::character varying
delta1 bigint default 0
delta2 bigint default 0
delta3 bigint default 0
delta4 bigint default 0
tz_id integer default 0
Indexes:
"idx1" PRIMARY KEY, btree (id)
"idx2" UNIQUE, btree (code, crid)
"idx3" btree (tz_id)
"idx4" btree (status)
code as crid are foreign key.
update table1 set delta1 = 100 where code/1000000 =999;
On Wed, Apr 30, 2008 at 12:16 PM, Gauri Kanekar <
meetgaurikanekar@gmail.com> wrote:
fillfactor is set to 80 as you suggested.
delta* fields r updated and these fields are no where related to any of the index fields. On Wed, Apr 30, 2008 at 12:13 PM, Pavan Deolasee <
pavan.deolasee@gmail.com> wrote:
On Wed, Apr 30, 2008 at 11:09 AM, Gauri Kanekar
<
meetgaurikanekar@gmail.com> wrote:
> relid | relname | n_tup_ins | n_tup_upd | n_tup_hot_upd | n_dead_tup
> -------+----------------+-----------+-----------+---------------+------------
> 16461 | table1 | 0 | 8352496 | 5389 | 8351242
>
you are using for these tests ? If its much less than 100, the very
low percentage of HOT updates would make me guess that you are
updating one of the index columns. Otherwise at least the initial
updates until you fill up the free space should be HOT.
Regards
Gauri
--
Regards
Gauri