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serverSystem JiraJIRA
serverId01505d01-b853-3c2e-90f1-ee9b165564fc
keyPERF-152

...

Test set shows that optimal configuration is 2 containers with 2 KAFKA NUMBER_OF_PARTITIONS. 3 containers with 2 nodes shows higher response times than even one container with one partition. (same for 3 nodes with 3 partitions).


Partitioning logic depends on event types. It means that with "one call test" in any case we'll use only one partition of mod-pubsub. As for CheckIn-CheckOut test we might use one partition more than other (or other two) that can explain differences in CPU usages on different nodes. So bigger partition number can help with complex workflows or with real users. 

Version

mod-pubsub:1.3.3


Tests


Test#Virtual UsersDurationmod-pubsub setup
1202 hours
1
2 container 1 partition
2202 hours2 containers 2 partitions
3202 hours2 container 3
container 2
partitions
4202 hours3 containers 3 partitions

Results comparison

For comparison purposes we'll use Checkformula to summarize  Check-In controller and Check-Out controller (summaries all calls) , instead of using all calls list.

1
and
vs 22
and
vs 33
and 1
vs 14 vs 3

50th pct75th pct75 % difference50th pct75th pct
2 and 3
75 % difference50th pct75th pct
3 and 1
75 % difference50th pct75th pct75 % difference
Total Check-
In Controller
in-0,
254
449-0,
345
69-
31%
99%
Check
-
In Controller
0,
41
222-0,
502
172
43%
-33%
Check
-
In Controller
0,671-0,
066
862-
0,04613%Check-Out Controller-0,717-0,743-30%Check-Out Controller1,1371,17146%Check-Out Controller-2,859-7,34716%
137%2,4163,018341%
Total Check-out3,1884,112120%1,7632,07940%4,9516,191169%-7,451-9,506-475%



CPU comparison during tests

Test 1:   2 containers,  1 partition

Node 1:

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Node 2:

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Test 2:   2 containers,  2 partitions

node 1:

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node 2:

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Test 3:  2 containers, 3 partitions

node 1:
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node 2:

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Test 4:  3 containers, 3 partitions

node 1

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node 2

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node 3

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