Willy Tarreau 7999bfbfd3 MEDIUM: buffers: make b_xfer() automatically swap buffers when possible
Whenever it's possible to avoid a copy, b_xfer() will simply swap the
buffer's heads without touching the data. This has brought the performance
back from 140 kH/s to 202 kH/s on the test case.
2018-07-20 19:21:43 +02:00
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