I/O intensive workloads that attempt to perform very large numbers of I/O operations in a short period of time might encounter poor I/O performance, even on an unloaded system. However, performing a smaller number of large I/O operations is not affected by this issue.
Workaround: Two workaround procedures are available that disable CPU power management. This results in greater power consumption while performance is improved in this regard. These procedures have an effect that is persistent across reboots. However, you do not need to reboot a domain after you implement either workaround.
Workaround A: Disable CPU power management on all domains:
-> set /SP/powermgmt policy=disabled
Workaround B: Disable CPU power management on one domain at a time. Type this command within each domain:
# poweradm set administrative-authority=none
If this issue persists, contact your Oracle service provider for further assistance.