What are the implications of changing socket buffer sizes?

Solution Verified - Updated -

Issue

  • What are the implications of changing the values of the following parameters :
/proc/sys/net/core/rmem_default = 524288
/proc/sys/net/core/rmem_max = 524288
/proc/sys/net/core/wmem_default = 52428
/proc/sys/net/core/wmem_max = 524288
  • What impact will larger buffer sizes have on latency?
  • What impact will having the receive buffers set to high?

Environment

  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6

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