1 exec
update tst set val=val+0

Plan
PLAN (TST NATURAL)

Adapted Plan
PLAN (TST NATURAL)

100000 record(s) was(were) updated in TST

------ Performance info ------
Prepare time = 0ms
Execute time = 2s 724ms
Current memory = 9423872
Max memory = 9426944
Memory buffers = 2048
Reads from disk to cache = 1523
Writes from cache to disk = 3
Fetches from cache = 795967


2 exec

Plan
PLAN (TST NATURAL)

Adapted Plan
PLAN (TST NATURAL)

100000 record(s) was(were) updated in TST

------ Performance info ------
Prepare time = 0ms
Execute time = 11m 9s 393ms
Current memory = 19232768
Max memory = 19236864
Memory buffers = 2048
Reads from disk to cache = 1
Writes from cache to disk = 44626
Fetches from cache = 1761418


3 exec


Adapted Plan
PLAN (TST NATURAL)

100000 record(s) was(were) updated in TST

------ Performance info ------
Prepare time = 0ms
Execute time = 18m 37s 147ms
Current memory = 19232768
Max memory = 19236864
Memory buffers = 2048
Reads from disk to cache = 0
Writes from cache to disk = 2
Fetches from cache = 1050944


4 exec

Plan
PLAN (TST NATURAL)

Adapted Plan
PLAN (TST NATURAL)

100000 record(s) was(were) updated in TST

------ Performance info ------
Prepare time = 0ms
Execute time = 17m 34s 877ms
Current memory = 19232768
Max memory = 19236864
Memory buffers = 2048
Reads from disk to cache = 0
Writes from cache to disk = 2
Fetches from cache = 1050944