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2021-08-04 - 20:01

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #3

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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ARMv7 Processor rev 4 (v7l), Linux 4.18.16-rt9 (Profile)

Latency plot of shadow in rack #7, slot #3
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack7slot3s.osadl.org (updated Wed Aug 04, 2021 12:43:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
225482930,12sleep00-21swapper/008:00:590
78782850,2sleep30-21swapper/309:44:193
78782850,2sleep30-21swapper/309:44:193
190722790,2sleep20-21swapper/207:51:032
587999778,57cyclictest0-21swapper/009:56:380
587999776,21cyclictest0-21swapper/008:11:000
587999759,58cyclictest1698-21/usr/sbin/munin10:16:210
5879997516,42cyclictest22620-21unixbench_multi12:01:300
191732750,1sleep10-21swapper/111:57:261
5879997420,39cyclictest12458-21ls09:01:080
587999739,49cyclictest1270-21fschecks_time11:36:040
587999738,52cyclictest13385-21fschecks_count10:31:090
5879997315,11cyclictest14282-21grep07:36:230
5879997313,41cyclictest6887-21ls07:16:110
317782730,2sleep20-21swapper/211:33:352
5879997223,27cyclictest0-21swapper/012:41:150
5879997215,43cyclictest25295-21/usr/sbin/munin12:06:120
587999719,53cyclictest17014-21diskmemload10:36:010
5879997112,45cyclictest5280-21fschecks_count10:21:140
5879997112,45cyclictest5280-21fschecks_count10:21:140
5879997013,41cyclictest10061-21timerandwakeup11:06:210
587999699,40cyclictest7336-21taskset12:23:010
587999696,45cyclictest0-21swapper/007:50:480
5879996915,47cyclictest9631-21rm10:26:110
5879996911,43cyclictest10704-21who07:26:140
5882996841,7cyclictest927-21sh11:35:593
587999685,20cyclictest29604-21ssh09:31:030
5879996815,49cyclictest10381-21sed12:26:210
587999679,48cyclictest25904-21ntpq11:26:080
587999677,42cyclictest5610-21missed_timers09:41:060
587999677,42cyclictest5610-21missed_timers09:41:060
5879996715,30cyclictest31625-21apt-get08:25:570
587999668,48cyclictest21605-21ssh10:41:100
587999668,48cyclictest21605-21ssh10:41:100
587999666,40cyclictest0-21swapper/010:01:450
587999659,43cyclictest0-21swapper/009:14:440
587999657,46cyclictest0-21swapper/010:09:000
5879996528,16cyclictest0-21swapper/010:50:590
5879996521,33cyclictest540-21ssh12:15:350
5879996516,26cyclictest14470-21sh12:31:160
5879996516,26cyclictest14470-21sh12:31:160
5879996514,44cyclictest13038-21rm11:11:020
587999649,41cyclictest8247-21wc07:21:120
587999646,43cyclictest9177-21ssh09:45:590
587999645,42cyclictest9777-21apt08:55:420
5879996452,5cyclictest26724-21unixbench_singl10:46:390
5879996417,35cyclictest0-21swapper/012:15:580
587999641,18cyclictest21081-21ssh12:40:430
5879996410,46cyclictest15111-21ssh11:52:270
587999639,42cyclictest0-21swapper/011:56:490
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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