Posts Tagged ‘nagle’

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Short-Take: iSCSI+Nexenta, Performance Notes

September 14, 2010

Here are a few performance tips for running iSCSI with NexentaStor in a Windows environment:

  1. When using the Windows iSCSI Software Initiator with some workloads, disabling the Nagle Algorithm on the Windows Server is sometimes recommended;
  2. Tuning TCP window and iSCSI parameters on each side of the connection can deliver better performance;
  3. VMware part of the equation? Adjusting the way VMware handles congestion events could be useful;
  4. On NexentaStor, disable the Nagle Algorithm with a value of “1” (default, 4095, enabled)

For storage applications where latency is a paramount issue, these hints just might help…