VMware vSphere 4 Informations techniques télécharger pdf (Page 42)

Performance Best Practices for VMware vSphere 4.0

42 VMware, Inc.

 Make sure that power management scheme settings (both in the BIOS and in ESX) that cause CPU

frequency scaling are consistent between the hosts on which the primary and secondary virtual

machines run.

 Enabling CPU reservations for the primary virtual machine (which will be duplicated for the

secondary virtual machine) to ensure that the secondary gets CPU cycles when it requires them.

 Though timer interrupt rates do not significantly affect FT performance, high timer interrupt rates create

additional network traffic on the FT logging NIC. Therefore, if possible, reduce timer interrupt rates as

described in “Guest Operating System CPU Considerations” on page 31.

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VMware vSphere 4 Informations techniques Page 42