CentOS Release 6.5 (final)
AMD FX(tm)-8120 Eight-Core
2.6.32-431.3.1.el6.x86_64 #1 SMP Fri Jan 3 21:39:27 UTC 2014 x86_64 x86_64 
x86_64 GNU/Linux
memory: 8GB

I am testing nested hstore, on a server with both with these patches:
  jsonb-9.patch.gz
  nested-hstore-9.patch.gz

One of the first tries brings down the server (gobbles up too much memory, I 
think).

When I run:

--------------------
select version();

drop   table if exists t_10000000 ;
create table           t_10000000 (
    id    serial
  , hs    hstore primary key
  , hs2   hstore
);
insert into t_10000000 (hs,hs2)
  select
       ( '['   || i || ','  || i|| ']' ) ::hstore
    ,  ( '{'   || i || '=>' || i|| '}' ) ::hstore
  from generate_series(1, 10000000) as f(i)
;
---------------------


I get:

$ time psql -af nestedhs.sql
\timing on
Timing is on.
select version();
                                                         version
--------------------------------------------------------------------------------------------------------------------------
 PostgreSQL 9.4devel_nested_hstore_20140204_0814_00d4f2a on 
x86_64-unknown-linux-gnu, compiled by gcc (GCC) 4.8.2, 64-bit
(1 row)

Time: 1.288 ms
drop   table if exists t_10000000 ;
DROP TABLE
Time: 0.808 ms
create table           t_10000000 (
    id    serial
  , hs    hstore primary key
  , hs2   hstore
);
CREATE TABLE
Time: 111.397 ms
insert into t_10000000 (hs,hs2)
  select
      ( '['   || i || ','  || i|| ']' ) ::hstore
    , ( '{'   || i || '=>' || i|| '}' ) ::hstore
  from generate_series(1, 10000000) as f(i)
;
[psql:nestedhs.sql:14: connection to server was lost

real    5m4.780s
user    0m0.005s
sys     0m0.009s

logging:

2014-02-04 10:34:25.376 CET 29133 LOG:  server process (PID 29459) was 
terminated by signal 9: Killed
2014-02-04 10:34:25.854 CET 29133 DETAIL:  Failed process was running: insert 
into t_10000000 (hs,hs2)
            select
                 ( '['   || i || ','  || i|| ']' ) ::hstore
              ,  ( '{'   || i || '=>' || i|| '}' ) ::hstore
            from generate_series(1, 10000000) as f(i)
        ;
2014-02-04 10:34:25.884 CET 29133 LOG:  terminating any other active server 
processes
2014-02-04 10:34:28.541 CET 29133 LOG:  all server processes terminated; 
reinitializing
2014-02-04 10:34:30.002 CET 29534 LOG:  database system was interrupted; last 
known up at 2014-02-04 10:30:42 CET
2014-02-04 10:34:30.933 CET 29535 FATAL:  the database system is in recovery 
mode
2014-02-04 10:34:31.150 CET 29534 LOG:  database system was not properly shut 
down; automatic recovery in progress
2014-02-04 10:34:31.344 CET 29534 LOG:  redo starts at 1/B1CC92F8
2014-02-04 10:34:46.681 CET 29534 LOG:  unexpected pageaddr 1/86F4A000 in log 
segment 0000000100000001000000CC, offset
16031744
2014-02-04 10:34:46.681 CET 29534 LOG:  redo done at 1/CCF49F50
2014-02-04 10:34:52.039 CET 29133 LOG:  database system is ready to accept 
connections



(and btw, I end up with a large but unusable table:

testdb=# \dt+ t_10000000
                       List of relations
 Schema |    Name    | Type  |  Owner   |  Size  | Description
--------+------------+-------+----------+--------+-------------
 public | t_10000000 | table | aardvark | 291 MB |
(1 row)

testdb=# select count(*) from t_10000000;
 count
-------
     0
(1 row)

)

Main .conf settings:

        setting          |               current_setting
--------------------------+----------------------------------------------
 autovacuum               | off
 port                     | 6541
 shared_buffers           | 512MB
 effective_cache_size     | 2GB
 work_mem                 | 50MB
 maintenance_work_mem     | 1GB
 checkpoint_segments      | 20
 server_version           | 9.4devel_nested_hstore_20140204_0814_00d4f2a
 pg_postmaster_start_time | 2014-02-04 10:12 (uptime: 0d 0h 33m 42s)
 data_checksums           | off

 feature_id |    feature_name    | is_supported | is_verified_by |              
                        comments
------------+--------------------+--------------+----------------+-------------------------------------------------------------------------------------
 PKG100     | project name       | YES          | ej             | nested_hstore
 PKG101     | patched            | YES          | ej             | YES
 PKG102     | patch file         | YES          | ej             |
/home/aardvark/download/pgpatches/0094/nested_hstore/20140130/jsonb-9.patch     
   +
            |                    |              |                |
/home/aardvark/download/pgpatches/0094/nested_hstore/20140130/nested-hstore-9.patch
 PKG103     | build time         | YES          | ej             | 2014-02-04 
08:19:13.600371+01
 PKG104     | server_version     | YES          | ej             | 
9.4devel_nested_hstore_20140204_0814_00d4f2a
 PKG105     | server_version_num | YES          | ej             | 90400
 PKG106     | port               | YES          | ej             | 6541
 PKG110     | commit hash        | YES          | ej             | 
00d4f2af8bd6a1b9db2f676cc76b64d98ace99fb
 PKG111     | catversion         | YES          | ej             | 201402031
 PKG112     | control version    | YES          | ej             | 937
 PKG113     | xlog_page_magic    | YES          | ej             | 0xD07B


I suppose for larger machines the crash will happen later; on this small 
machine I can generate_series a 1 million row
table without crashing.


Thanks,

Erik Rijkers













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