Description of problem: The driver limits IOs to 128kb in size. Throughput can be improved by increasing this to 512kb. Version-Release number of selected component (if applicable): 2.4.21-27 How reproducible: Steps to Reproduce: 1. 2. 3. Actual results: Expected results: Additional info:
Created attachment 111118 [details] patch to increase IO size This patch appears to improve throughput on intensive IO loads.
Instead of the patch which enables increases the default values, the suggestion is to adjust the values via qla module parameters. e.g. option qla2300 ql2xmaxsgs=255 ql2xmaxsectors=2048 Increasing these values could cause increased memory pressure on smaller systems, so with this method the values can then be adjusted only on systems that would show a benefit.