HP BL260c Configuring the HP ProLiant Server BIOS fo Low Latency OS Kernel Env - Page 5

Disabling Processor Power and Utilization Monitoring provides the greatest benefit in low latency environments. Disabling Memory Pre-Failure Notification has a much smaller effect because this feature causes an event that results in increased latency once per several minutes to once per hour. Only the most latency-sensitive environments should have Memory Pre-Failure Notification disabled. Some low-latency kernels provide features that result in system latency greater than that caused by Memory PreFailure Notification. For example, Red Hat Enterprise Linux 5 kernel soft lockup detection generates an interrupt that results in an approximately one second latency each time it occurs. This latency is greater than that caused by Memory Pre-Failure Notification. Overview 5