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Table of Contents

Summary

Stability Performance test plan was triggered for 72 hours injecting vCPE, vFirewall, vDNS, VOLTE onset & abatement (where applicable) messages through REST interface of Drools PDP installed in windriver lab (PFPP).  This was running on a kubernetes host, using the m2.xlarge spec, having the following configuration:

  • 32GB RAM
  • 8 VCPU
  • 160GB Disk

The test environment was set-up using simulated components i.e. A&AI, VFC and SO using "features enable controlloop-utils".  However the performance test subscribes to the POLICY-CL-MGT topic, which is not simulated, to determine when the PDP has completed various steps.

The performance test runs 10 simultaneous threads injecting ONSET messages.  In each thread, each of the different types of ONSETs is injected and processed in a serial fashion, first vCPE is injected and its associated APPC requests are answered, then vFirewall is injected, and so on.  Each thread repeats this process 1000 times.  APPC response messages were injected in the test plan wherever needed.

Average processing time was calculated using the last 10000 records from audit.log for each use case, as well as the matching transaction time extracted from the network.log, using the below scripthttps://gerrit.onap.org/r/gitweb?p=policy/drools-applications.git;a=blob;f=testsuites/stability/src/main/resources/amsterdam/generate_performace_report.sh;h=846628543b5a127c49f57a1fa1f4a254dfff64da;hb=refs/heads/master:

generate-mt-performance-report


Result

Time taken by Drools PDP

...

...

Code Block
Elapsed time for vCPE :
  matched 8870 samples, average 18 ms
  unmatched 1130 samples, average 339 ms

Elapsed time for vFirewall :
  matched 8871 samples, average 55 ms
  unmatched 1129 samples, average 177 ms

Elapsed time for vDNS :
  matched 8869 samples, average 9 ms
  unmatched 1131 samples, average 16 ms

Elapsed time for VOLTE :
  matched 8868 samples, average 9 ms
  unmatched 1132 samples, average 15 ms


Note: the “unmatched samples” are requests for which no corresponding network time could be identified by the reporting tool.  Hence those numbers represent the total elapsed time, with nothing subtracted out.


CPU Utilization

Total CPU used by the PDP was measured before and after the test, using "ps -l".

Initial CPU timeFinal CPU timeTotal CPU used during testAverage CPU per ONSET
00:36:5500:43:28393 ms9.8 ms


Memory Utilization

Code Block
Number of young garbage collections used during the test: 1468
Avg. Young garbage collection time: ~5.8 ms per collection
Total number of Full garbage collection: 3
Avg. Full garbage collection time: ~112 ms per collection

S0C    S1C    S0U    S1U      EC       EU        OC         OU       MC     MU    CCSC   CCSU   YGC     YGCT    FGC    FGCT     GCT
2048.0 2048.0  0.0   704.0  68096.0  59110.3   432640.0   86116.6   73344.0 71849.4 8320.0 7801.2    321    2.033   3      0.337    2.370
2560.0 1536.0  0.0   1088.0 93184.0  82890.4   432640.0   143366.1  73344.0 71882.9 8320.0 7804.8   1789   10.564   3      0.337   10.901

CPU Utilization

Code Block
Average:        CPU     %user     %nice   %system   %iowait    %steal     %idle
Average:        all      0.84      0.00      0.23      0.02      0.00     98.91
Average:          0      1.16      0.00      0.30      0.00      0.00     98.54
Average:          1      1.00      0.00      0.25      0.00      0.00     98.75
Average:          2      1.21      0.00      0.33      0.00      0.00     98.46
Average:          3      0.78      0.00      0.18      0.00      0.00     99.03
Average:          4      0.77      0.00      0.18      0.00      0.00     99.04
Average:          5      0.80      0.00      0.28      0.12      0.00     98.80
Average:          6      0.54      0.00      0.13      0.00      0.00     99.33
Average:          7      0.49      0.00      0.14      0.00      0.00     99.37

...

Code Block
Number of young garbage collection: 6711
Avg. Young garbage collection time: ~7.09 ms per collection
Number of Full garbage collection: 4
Avg. Full garbage collection time: ~197 ms per collection

 S0     S1     E      O      M     CCS    YGC     YGCT    FGC    FGCT     GCT  
0.00  90.62  45.71  21.36  97.74  93.42   6711   47.578     4    0.788   48.366

Performance Metrics

Single with only a single policy executing

No.

Metric

Description

ResultComments
4Maximum Simultaneous ExecutionsMeasure the maximum number of simultaneous policy executions that can be achieved whilst maintaining system stability and resource utilization10DMaaP connection limitations prevented the test from running more than 10 simultaneous threads/ONSETs
5Multi-1Threaded Response TimeMeasure the execution time for onset and abatement in each use case when multiple threads are injecting ONSET events simultaneously

vCPE - 3 18 ms

vFirewall - 2 55 ms

vDNS - 8 9 ms

VOLTE - 7 9 ms

The average time taken is calculated based on last 10,000 samples in audit.log file.
6Multi 2Single Threaded CPU UsageCPU Usage for each use case when executing alone~ 1%3multiple threads are injecting ONSET events simultaneously9.8 ms
7Multi Single Threaded Memory UsageMemory Usage Memory Usage for each use case when executing alone~ 100 MB4Maximum Simultaneous ExecutionsMeasure the maximum number of simultaneous policy executions that can be achieved whilst maintaining system stability and resource utilization2The current size of source/sink topics is 10. And 1 onset message results to 5 messages in sink topic. Hence we can only run 2 simaltaneous thread and assert the values coming in sink topics.multiple threads are injecting ONSET events simultaneously