Description of problem: On AMD Greyhound (aka K8L) CPUs, timer interrupts are driven with NMIs, resulting in degraded performance. Version-Release number of selected component (if applicable): 2.4.21-40.EL #1 SMP How reproducible: 100% Steps to Reproduce: 1. Boot RHEL3 Update 7 on a Greyhound CPU, using the stock SMP kernel 2. Observe total NMI interrupts with 'cat /proc/cpuinfo' Actual results: NMIs are delivered at 100HZ. Expected results: NMIs should occur only infrequently. Additional info:
This bug is filed against RHEL 3, which is in maintenance phase. During the maintenance phase, only security errata and select mission critical bug fixes will be released for enterprise products. Since this bug does not meet that criteria, it is now being closed. For more information of the RHEL errata support policy, please visit: http://www.redhat.com/security/updates/errata/ If you feel this bug is indeed mission critical, please contact your support representative. You may be asked to provide detailed information on how this bug is affecting you.