good pc but bad performance,why?

hello,

    I have some question when I use postgresql 7.4.1 on redhat adv server 2.1 .
I use IBM335 as server, it has 4 cpus, 1G RAM. but I got very bad performance.
I can only do about 50 inserts per sencond. Event worse than my pc(PIII 800,256M RAM), can anyone give me some advice?
  

　　　　　　　　huang yaqin
　　　　　　　　hyq@gthome.com
　　　　　　　　　　2004-04-06