Machine details
CPU	4 core
OS	suse linux 11.2
RAM	24GB
Scale factor	75	shared buffers	4GB
auto vacuum	off	wal_buffers	16MB
ckpt seg	256	ckpt interval	15min
server_encoding	SQL_ASCII	client_encoding	UTF8
lc_collate	C	lc_ctype	C
sync commit	on	Fill factor	80
Pgbench - org
CONFIGURATION
Clients	1		2		4		8
WAL LZ code
	TPS	Xlog Diff (GB)	TPS	Xlog Diff (GB)	TPS	Xlog Diff (GB)	TPS	Xlog Diff (GB)
Run1	151	0.74	163	0.77	318	1.05	614	1.29
Run2	147	0.73	162	0.77	318	1.05	613	1.29
Run3	149	0.74	162	0.77	317	1.04	612	1.29
Avg	149	0.74	162.3333333	0.77	317.6667	1.05	613	1.29
Head code
	TPS	Xlog Diff (GB)	TPS	Xlog Diff (GB)	TPS	Xlog Diff (GB)	TPS	Xlog Diff (GB)
Run1	148	0.74	163	0.77	318	1.06	614	1.32
Run2	150	0.74	163	0.77	318	1.06	613	1.32
Run3	149	0.74	162	0.77	317	1.06	611	1.32
Avg	149	0.74	162.6666667	0.77	317.6667	1.06	612.6667	1.32
DIFF
	0.00%	-0.45%	-0.20%	0.00%	0.00%	-1.26%	0.05%	-2.27%
Pgbench - 500
CONFIGURATION
Clients	1		2		4		8
WAL LZ code
	TPS	Xlog Diff (GB)	TPS	Xlog Diff (GB)	TPS	Xlog Diff (GB)	TPS	Xlog Diff (GB)
Run1	148	1.09	162	1.17	314	2.00	602	3.10
Run2	145	1.06	162	1.17	315	2.01	602	3.10
Run3	148	1.08	161	1.16	314	2.00	601	3.10
Avg	147	1.08	161.6666667	1.17	314.3333	2.00	601.6667	3.10
Head code
	TPS	Xlog Diff (GB)	TPS	Xlog Diff (GB)	TPS	Xlog Diff (GB)	TPS	Xlog Diff (GB)
Run1	148	1.09	162	1.18	315	2.04	601	3.22
Run2	148	1.09	162	1.18	314	2.04	601	3.23
Run3	146	1.08	162	1.18	315	2.05	600	3.22
Avg	147.3333333	1.09	162	1.18	314.6667	2.04	600.6667	3.22
DIFF
	-0.23%	-0.92%	-0.21%	-1.13%	-0.11%	-1.96%	0.17%	-3.83%
Machine details
CPU	4 core
OS	suse linux 11.2
RAM	24GB
Scale factor	10	shared buffers	4GB
auto vacuum	off	wal_buffers	16MB
ckpt seg	256	ckpt interval	15min
server_encoding	SQL_ASCII	client_encoding	UTF8
lc_collate	C	lc_ctype	C
sync commit	on	Fill factor	80
Pgbench - 1800
Update record - 250
columns update - 3
CONFIGURATION
Clients	1		2		4		8
WAL LZ code
	TPS	Xlog Diff (GB)	TPS	Xlog Diff (GB)	TPS	Xlog Diff (GB)	TPS	Xlog Diff (GB)
Run1	139	0.95	161	1.06	277	1.57	427	2.11
Run2	140	0.96	160	1.06	277	1.57	427	2.11
Run3	139	0.95	160	1.06	276	1.57	427	2.12
Avg	139.3333333	0.95	160.3333333	1.06	276.6667	1.57	427	2.11
Head code
	TPS	Xlog Diff (GB)	TPS	Xlog Diff (GB)	TPS	Xlog Diff (GB)	TPS	Xlog Diff (GB)
Run1	139	1.50	160	1.69	269	2.65	411	3.78
Run2	140	1.51	160	1.69	273	2.69	417	3.83
Run3	141	1.52	160	1.69	273	2.69	417	3.83
Avg	140	1.51	160	1.69	271.6667	2.68	415	3.81
DIFF
	-0.48%	-36.87%	0.21%	-37.28%	1.84%	-41.34%	2.89%	-44.58%