When free memory falls below 6%, ESX starts swapping out the Delphix guest OS. The default ESX minimum free memory requirement is 6% of the total RAM.Never allocate all the available physical memory to virtual machines. A swapped page will require orders of magnitude more time to be brought back to physical memory from the ESXi swap device. Reservations ensure that the Delphix Engine will not be forced to swap pages during times of memory pressure on the host.The performance of the Delphix Engine will be significantly impacted by the over-commitment of memory resources in the ESX Server. Memory reservations is required for the Delphix VM.More memory will provide better read performance. The Delphix Engine uses its memory to cache database blocks.This includes allowing a percentage of CPU resources for the hypervisor itself as it can de-schedule an entire VM if the hypervisor is needed for managing IO or compute resources. As such, it is crucial that your ESXi host is not over-subscribed, as this eliminates the possibility of a lack of resources for the Delphix Engine. If the Delphix Engine competes with other virtual machines on the same host for resources it will result in increased latency for all operations. The Delphix Engine is intensive both from a network and a storage perspective. In this section, you’ll find requirements to run Delphix on VMware including supported versions and instance configurations as well as recommended configuration parameters for optimal performance. The Delphix Engine is a virtual appliance that runs in a hypervisor.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |