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Posted to gitbox@activemq.apache.org by GitBox <gi...@apache.org> on 2020/12/24 12:20:47 UTC
[GitHub] [activemq-artemis] franz1981 edited a comment on pull request #3392: ARTEMIS-3045 ReplicationManager can batch sent replicated packets
franz1981 edited a comment on pull request #3392:
URL: https://github.com/apache/activemq-artemis/pull/3392#issuecomment-750867139
@michaelandrepearce that's a PR that aim to "fix" the regression seen on https://softwaremill.com/mqperf/
TBH I just reproduced the scalability issue with small message size given that we tends to underutilized the network because we sent replicated packets ASAP without batching them (that means that a single standard MTU of 1500 bytes could contains x10 tiny packets eg ack, small records..).
This PR batch replicated packets by filling the Netty pending buffer and it's getting a nice speed up if compared with master (and 2.2.0, surprisingly):
master:
```
**************
RUN 3 EndToEnd Throughput: 20447 ops/sec
**************
EndToEnd SERVICE-TIME Latencies distribution in MICROSECONDS
mean 1635.00
min 180.22
50.00% 1523.71
90.00% 2088.96
99.00% 4521.98
99.90% 8028.16
99.99% 13959.17
max 17825.79
count 320000
```
This PR:
```
**************
RUN 4 EndToEnd Throughput: 24524 ops/sec
**************
EndToEnd SERVICE-TIME Latencies distribution in MICROSECONDS
mean 1310.83
min 182.27
50.00% 1204.22
90.00% 1736.70
99.00% 3850.24
99.90% 7995.39
99.99% 12713.98
max 19267.58
count 320000
```
this is still a DRAF PR given that we need further tests to see that's not regressing perf for other cases and I'm open to experiment other options.
The work on this PR is directly related with https://issues.apache.org/jira/browse/ARTEMIS-2877
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