rvponp=# insert into tblTest (id, descpages) select oid, -pages from tblPrintjobs ;
INSERT 0 622972
rvponp=# delete from tblTest ;
DELETE 622972
rvponp=#
takes about 1 minute for the insert, and 5 seconds for the delete.
On 13 Jun 2005, at 13:51, Yves Vindevogel wrote:
I have started this on my testmachine at 11h20. It's still running and here it's 13h40.
Setup:
Intel P4 2Ghz, 1 Gb ram
ReiserFS 3 (with atime in fstab, which is not optimal)
Slackware 10
PG 7.4
I have the same problems on my OSX and other test machines.
It's frustrating. Even Microsoft Access is faster !!
On 13 Jun 2005, at 11:02, Yves Vindevogel wrote:
rvponp=# vacuum verbose tblPrintjobs ;
INFO: vacuuming "public.tblprintjobs"
INFO: index "pkprintjobs" now contains 622972 row versions in 8410 pages
DETAIL: 9526 index row versions were removed.
0 index pages have been deleted, 0 are currently reusable.
CPU 0.60s/0.31u sec elapsed 31.68 sec.
INFO: index "uxprintjobs" now contains 622972 row versions in 3978 pages
DETAIL: 9526 index row versions were removed.
0 index pages have been deleted, 0 are currently reusable.
CPU 0.15s/0.48u sec elapsed 3.59 sec.
INFO: index "ixprintjobsipaddress" now contains 622972 row versions in 2542 pages
DETAIL: 9526 index row versions were removed.
49 index pages have been deleted, 0 are currently reusable.
CPU 0.13s/0.24u sec elapsed 2.57 sec.
INFO: index "ixprintjobshostname" now contains 622972 row versions in 2038 pages
DETAIL: 9526 index row versions were removed.
35 index pages have been deleted, 0 are currently reusable.
CPU 0.09s/0.30u sec elapsed 1.14 sec.
INFO: index "ixprintjobsrecordnumber" now contains 622972 row versions in 1850 pages
DETAIL: 9526 index row versions were removed.
0 index pages have been deleted, 0 are currently reusable.
CPU 0.07s/0.28u sec elapsed 1.51 sec.
INFO: index "ixprintjobseventdate" now contains 622972 row versions in 1408 pages
DETAIL: 9526 index row versions were removed.
4 index pages have been deleted, 0 are currently reusable.
CPU 0.05s/0.24u sec elapsed 2.61 sec.
INFO: index "ixprintjobseventtime" now contains 622972 row versions in 1711 pages
DETAIL: 9526 index row versions were removed.
0 index pages have been deleted, 0 are currently reusable.
CPU 0.12s/0.53u sec elapsed 11.66 sec.
INFO: index "ixprintjobseventcomputer" now contains 622972 row versions in 2039 pages
DETAIL: 9526 index row versions were removed.
36 index pages have been deleted, 0 are currently reusable.
CPU 0.12s/0.23u sec elapsed 1.27 sec.
INFO: index "ixprintjobseventuser" now contains 622972 row versions in 2523 pages
DETAIL: 9526 index row versions were removed.
19 index pages have been deleted, 0 are currently reusable.
CPU 0.14s/0.24u sec elapsed 1.74 sec.
INFO: index "ixprintjobsloginuser" now contains 622972 row versions in 2114 pages
DETAIL: 9526 index row versions were removed.
13 index pages have been deleted, 0 are currently reusable.
CPU 0.07s/0.32u sec elapsed 4.29 sec.
INFO: index "ixprintjobsprintqueue" now contains 622972 row versions in 2201 pages
DETAIL: 9526 index row versions were removed.
30 index pages have been deleted, 0 are currently reusable.
CPU 0.10s/0.34u sec elapsed 1.92 sec.
INFO: index "ixprintjobsprintport" now contains 622972 row versions in 3040 pages
DETAIL: 9526 index row versions were removed.
40 index pages have been deleted, 0 are currently reusable.
CPU 0.18s/0.27u sec elapsed 2.63 sec.
INFO: index "ixprintjobssize" now contains 622972 row versions in 1733 pages
DETAIL: 9526 index row versions were removed.
0 index pages have been deleted, 0 are currently reusable.
CPU 0.16s/0.43u sec elapsed 4.07 sec.
INFO: index "ixprintjobspages" now contains 622972 row versions in 1746 pages
DETAIL: 9526 index row versions were removed.
24 index pages have been deleted, 0 are currently reusable.
CPU 0.13s/0.22u sec elapsed 1.58 sec.
INFO: index "ixprintjobsapplicationtype" now contains 622972 row versions in 1395 pages
DETAIL: 9526 index row versions were removed.
27 index pages have been deleted, 0 are currently reusable.
CPU 0.07s/0.29u sec elapsed 1.20 sec.
INFO: index "ixprintjobsusertype" now contains 622972 row versions in 1393 pages
DETAIL: 9526 index row versions were removed.
24 index pages have been deleted, 0 are currently reusable.
CPU 0.07s/0.22u sec elapsed 0.82 sec.
INFO: index "ixprintjobsdocumentname" now contains 622972 row versions in 4539 pages
DETAIL: 9526 index row versions were removed.
6 index pages have been deleted, 0 are currently reusable.
CPU 0.24s/0.38u sec elapsed 5.83 sec.
INFO: index "ixprintjobsdesceventdate" now contains 622972 row versions in 1757 pages
DETAIL: 9526 index row versions were removed.
4 index pages have been deleted, 0 are currently reusable.
CPU 0.08s/0.25u sec elapsed 1.16 sec.
INFO: index "ixprintjobsdesceventtime" now contains 622972 row versions in 1711 pages
DETAIL: 9526 index row versions were removed.
0 index pages have been deleted, 0 are currently reusable.
CPU 0.18s/0.52u sec elapsed 9.44 sec.
INFO: index "ixprintjobsdescpages" now contains 622972 row versions in 1748 pages
DETAIL: 9526 index row versions were removed.
24 index pages have been deleted, 0 are currently reusable.
CPU 0.06s/0.26u sec elapsed 0.94 sec.
INFO: index "ixprintjobspagesperjob" now contains 622972 row versions in 5259 pages
DETAIL: 9526 index row versions were removed.
4 index pages have been deleted, 0 are currently reusable.
CPU 0.31s/0.36u sec elapsed 5.47 sec.
INFO: "tblprintjobs": removed 9526 row versions in 307 pages
DETAIL: CPU 0.00s/0.06u sec elapsed 0.23 sec.
INFO: "tblprintjobs": found 9526 removable, 622972 nonremovable row versions in 19382 pages
DETAIL: 0 dead row versions cannot be removed yet.
There were 75443 unused item pointers.
0 pages are entirely empty.
CPU 3.43s/6.83u sec elapsed 97.86 sec.
INFO: vacuuming "pg_toast.pg_toast_2169880"
INFO: index "pg_toast_2169880_index" now contains 0 row versions in 1 pages
DETAIL: 0 index pages have been deleted, 0 are currently reusable.
CPU 0.00s/0.00u sec elapsed 0.00 sec.
INFO: "pg_toast_2169880": found 0 removable, 0 nonremovable row versions in 0 pages
DETAIL: 0 dead row versions cannot be removed yet.
There were 0 unused item pointers.
0 pages are entirely empty.
CPU 0.00s/0.00u sec elapsed 0.00 sec.
VACUUM
rvponp=#
On 13 Jun 2005, at 10:54, Mark Kirkwood wrote:
Apologies - I should have said output of 'VACUUM VERBOSE mytable'.Met vriendelijke groeten,
(been using 8.1, which displays dead tuple info in ANALYZE...).
Mark
Yves Vindevogel wrote:
rvponp=# analyze verbose tblPrintjobs ;
INFO: analyzing "public.tblprintjobs"
INFO: "tblprintjobs": 19076 pages, 3000 rows sampled, 588209 estimated total rows
ANALYZE
On 13 Jun 2005, at 04:43, Mark Kirkwood wrote:
Yves Vindevogel wrote:
I'm trying to update a table that has about 600.000 records.
The update query is very simple : update mytable set pagesdesc =
- pages ;
The query takes about half an hour to an hour to execute. I have
tried a lot of things.
Half an hour seem a bit long - I would expect less than 5 minutes on
reasonable hardware.
You may have dead tuple bloat - can you post the output of 'ANALYZE
VERBOSE mytable' ?
Bien à vous,
Kind regards,
Yves Vindevogel
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