CODEWITHSUNDEEP
aeron
denisxor
denisxor

Reputation: 66

Aeron publication suddenly stops message transmission

I have the stream which suddenly (after number of successfully transmitted messages) stops sending|receiving messages.

The output of AeronStat for it is:

47 : 8,452,864 - pub-pos (sampled): 9 -813703616 1 aeron:udp?endpoint=localhost:40100
48 : 8,519,104 - pub-lmt: 9 -813703616 1 aeron:udp?endpoint=localhost:40100
49 : 130,496 - snd-pos: 9 -813703616 1 aeron:udp?endpoint=localhost:40100
50 : 131,072 - snd-lmt: 9 -813703616 1 aeron:udp?endpoint=localhost:40100
51 : 0 - snd-bpe: 9 -813703616 1 aeron:udp?endpoint=localhost:40100
52 : 130,496 - rcv-hwm: 10 -813703616 1 aeron:udp?endpoint=localhost:40100
53 : 130,496 - rcv-pos: 10 -813703616 1 aeron:udp?endpoint=localhost:40100
54 : 0 - sub-pos: 2 -813703616 1 aeron:udp?endpoint=localhost:40100 @0
55 : 130,496 - sub-pos: 8 -813703616 1 aeron:udp?endpoint=localhost:40100 @0

It looks like there is relatively small snd-lmt which prevets the transmission. Is my understanding correct? How can I change snd-lmt ? And also what does it mean when I have two sub-pos entries for one channnel in AeronStat output e.g.:

54 : 0 - sub-pos: 2 -813703616 1 aeron:udp?endpoint=localhost:40100 @0
55 : 130,496 - sub-pos: 8 -813703616 1 aeron:udp?endpoint=localhost:40100 @0

Thanks!

Upvotes: 1

Views: 206

Answers (1)

Martin Thompson
Martin Thompson

Reputation: 2044

Two sub-pos counter values indicates you have two separate subscriptions to the same stream on that media driver. The publication is likely to be experiencing back-pressure because of the subscriptions is not advancing as it is likely not being polled.

Upvotes: 4

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