HP9000 vs RS6000

I'm using Informix-SE 5.0, on a HP9000 and on a RS6000. Those machines have similar theorical performance, but a "LOAD FROM" of 800,000 records on HP9000 takes over four hours, on RS6000 only forty minutes. 8-) What's the reason of that difference? -- Alessio Milan - GIC Sipi-U S.r.l. Phone: +39-432-502763 Viale Leopardi, 126 Fax: +39-432-503960 33100 Udine, Italy e-mail: milan@ud.gic.it