Tuning Option

• hadware
• Storage
• networking
  • TCP sliding windows
• OS
  • Kernel parameters and /proc
    • General kernel tuning parameters

Sysctl variable	Default 2.6	Suggested
kernel.pid_max	32768	32768*
vm.lowmem_reserve_ratio	256 32
vm.overcommit_ratio	50
vm.swapiness	60

• GPFS Configuration