Network Storage Protocols Discussions

Recommendations for Linux GOS tuning in VMware environment (SAN)


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?



  • 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...


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