I tested some equipment

zabbix agent get CPU load Data error ???

===========================

[jack@123 sbin]$ ./zabbix_agentd -t system.cpu.load[percpu,avg15]
system.cpu.load[percpu,avg15] [d|0.028750]
[jack@123 sbin]$ ./zabbix_agentd -t system.cpu.load[percpu,avg1]
system.cpu.load[percpu,avg1] [d|0.022500]
[jack@123 sbin]$ ./zabbix_agentd -t system.cpu.load[percpu,avg5]
system.cpu.load[percpu,avg5] [d|0.028750]
[jack@123 sbin]$ ./zabbix_agentd -t system.cpu.load[percpu,avg5]
[jack@123 sbin]$ w
18:09:44 up 227 days, 48 min, 4 users, load average: 0.30, 0.45, 0.45
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
[jack@123 sbin]$
===========================

Digital large difference?

my OS
CentOs 5.8 x64
Linux 123 2.6.27.57 #1 SMP Thu Nov 17 14:52:36 CST 2011 x86_64 x86_64 x86_64 GNU/Linux