Comments (1)
Thanks @Antonito - it was nice chatting with you earlier.
Since current SCTP does not have congestion control, it tries to send all the pending data pushed by the application. As network bandwidth is finite, I can image lots of packet loss would be happening if you push large data too fast (probably, the CPU is doing large number of retransmissions also).
Even with proper congestion control is implemented, it is still the application's responsibility to control how fast data has to be pushed to the data channel, which is typically done by monitoring a parameter called "bufferAmount" which is, again, not available yet.
https://developer.mozilla.org/en-US/docs/Web/API/RTCDataChannel/bufferedAmount
If you push large data at once, SCTP layer would be busy working on appending and sorting the send buffer (payloadQueue), so I can imagine much CPU time is spent for sorting the data a lot.
Once the congestion control is implemented, we should be able to enable bufferedAmount
(and other related threshold) parameter, with which the application can control the amount of data to be pushed to the channel.
I will also looking into more efficient way to manage buffered chunks. (append / sorting arrays may not be super efficient).
Relates to #11
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Related Issues (20)
- panic in Association.handleCookieEcho HOT 1
- What is the difference with Linux SCTP? HOT 2
- Changing initialRecvBufSize causes datachannel to hang
- Dependency Dashboard
- SACK chunks followed by other chunks are incorrectly handled. HOT 2
- Datachannels have a great latency for poor network HOT 9
- SCTP throughput ~8x slower than TCP when the connection has latency HOT 15
- User Initiated Abort (cause code: 12) not handled HOT 3
- Remove the pending buffer after the data channel call close() by either side. HOT 12
- SCTP Streams have no SetReadDeadline
- Race in TestStreamClose introduced by the previous merge
- Potential regression by a commit c0159aa in causing `TestAssociation_Shutdown` to fail HOT 5
- Expose error definitions HOT 6
- SCTP support capabilities HOT 1
- Document planned / implemented RFCs in README
- Flaky tests and/or goroutine leaks HOT 8
- Panic occured on one way data transmission through Client to Client stream
- sctp.Read sometimes returns DeadlineExceededError on past cancelled deadlines HOT 1
- v2 Plans HOT 5
- No reliable way to be notified of a Stream buffer becoming empty HOT 3
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