executing pgsql on Xeon-dual machine

Hello,

I'm facing to a performance problem, when I run PostgreSQL 7.
2.1 + RedHat Linux 7.3 on a Xeon Dual CPU machine.

Compared with a P4 2.4GHz machine, pgbench shows 1/10 on the
Xeon machine (detail is describled below), while hdparm
shows 2 times faster.

Disabling HTT had no effects. PostgreSQL 7.2.3 is also slow
on the machine.

I'm grateful if any of you can give me an advice.

thank you.


data ---------------

[Hardware Profile]
DELL PowerEdge 2600
    CPU     Xeon 2GHz Dual
    Memory  2GB PC2100 ECC DDR266 SDRAM
    HDD     73GB 10,000rpm U320 SCSI

DELL PowerEdge 600SC (for comparison)
    CPU     Pentium 4 2.4GHz Single
    Memory  1GB 400MHz ECC DDR SDRAM
    HDD     80GB 7,200rpm EIDE

[pgbench result]

multiplicity  |  1  |  128
--------------+-----+------
PE 600        |259.2|178.2  [tps]
PE 2600       | 22.9| 34.8  [tps]

- wal_sync_method(wal_method.sh) fsync
- 200,000 data items

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Yutaka Inada [Justsystem Corporation]