Friday, March 4, 2011

THE QUEUES INVOLVED IN VSPHERE

Very nice reminder of all th device Queues involved in Vsphere. Original article with more details at YellowBricks.

  • Guest device driver queue depth (LSI=32, PVSCSI=64)
  • vHBA (Hard coded limit: LSI=128, PVSCSI=255)
  • disk.schedNumOutstanding=32 (VMKernel),
  • VMkernel Device Driver (FC=32, iSCSI=128, NFS=256,  local disk=32)
  • Multiple SAN/Array Queues 

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