On 14/07/17 09:47, Hudalla Kai (INST/ECS4) wrote:
We have been experimenting with different approaches:
1) Using a prefetch of 50
2) Using a prefetch of 1000
3) Using a prefetch of 0 and doing manual flow control, issuing 1000 credits
initially
Interestingly, throughput seems to actually go down the more credit we issue,
i.e. option 1) yields the best result ...
vertx-proton seems to replenish the sender (Dispatch Router in this case) with
one credit each time a message is processed at the cosumer side when using
prefetch. Do you consider this to be a problem, i.e. wouldn't it be more
efficient to replenish the sender with, say, 200 more credits en block once in
a while?
Yes, probably it would, but that wouldn't account for the perf you are
seeing. There must be some other factor. I assume you are sending as
much as you have credit for at any point? You don't have full trace
logging on the router?
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