Seeing 1.00 average server load – 100% of a single core used by kipmi0.
Resolved by executing from shell, as root –
echo 100 > /sys/module/ipmi_si/parameters/kipmid_max_busy_us
Another note:
On CentOS/RHEL, that command can be made permanent by adding it to /etc/rc.d/rc.local. The rc.local runs after all of the other init scripts