Poor SCTP Performance with small packets

Solution Unverified - Updated -

Issue

When transmitting SCTP packets a noticeable throughput drop is noticed when packets sent are very small (< 50 octets)

                   TCP                  SCTP
Packetlen          
10000              117 MB/s              106 MB/s
1000               117 MB/s               87 MB/s
300                117 MB/s               72 MB/s
200                117 MB/s               65 MB/s
150                117 MB/s               47 MB/s
120                117 MB/s               24 MB/s
100                117 MB/s               19 MB/s
80                 117 MB/s               16 MB/s
50                  92 MB/s               10 MB/s
20                  37 MB/s               20 KB/s
10                  19 MB/s               10 KB/s

Environment

  • Red Hat Enterprise Linux 6

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