why cyclone v soc HPS running linux can only get 200 BogoMIPS?

Sending discover...

Sending discover...

No lease, failing

Starting portmap daemon...

INIT: Entering runlevel: 5

Starting OpenBSD Secure Shell server: sshd

NET: Registered protocol family 10

IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready

done.

Starting syslogd/klogd: done

Starting Lighttpd Web Server: lighttpd.

Stopping Bootlog daemon: bootlogd.

Poky 8.0 (Yocto Project 1.3 Reference Distro) 1.3 socfpga_cyclone5 ttyS0

socfpga_cyclone5 login: root

root@socfpga_cyclone5:~# cat /proc/cpuinfo

Processor : ARMv7 Processor rev 0 (v7l)

processor : 0

BogoMIPS : 1594.16

processor : 1

BogoMIPS : 1594.16

Features : swp half thumb fastmult vfp edsp thumbee neon vfpv3 tls

CPU implementer : 0x41

CPU architecture: 7

CPU variant : 0x3

CPU part : 0xc09

CPU revision : 0

Hardware : Altera SOCFPGA

Revision : 0000

Serial : 0000000000000000

root@socfpga_cyclone5:~#

this is the prebuilt image from rocketboards.org, boot from SD CARD. so huge gap.