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Recommendations for Linux GOS tuning in VMware environment (SAN)

[ Edited ]

What are the general recommendations for GOS Linux tuning in VMware environment living ontop of VMFS, RDM and for GOS directley-attached software iSCSI initiator?

 

Like:

  • elevator/scheduler (/sys/block/[DEVICE]/queue/scheduler)
  • sysctl: vm.dirty_background_ratio, vm.dirty_ratio и vm.swappiness
  • I/O queue size for block device (/sys/block/[DEVICE]/queue/nr_requests)
  • Recommended FS
  • File System mount recommendations like Noatime & Nodiratime etc
  • I/O Timeout setting (/sys/block/[DEVICE]/device/timeout)
  • Other...