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2023-02-06 - 23:08

x86 Intel Core i7-2600K @3400 MHz, Linux 5.9.0-rc2-rt1 (Profile)

Latency plot of system in rack #4, slot #6
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h200 -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 100, Linux 4.9.20-rt16, x86_64 highest latencies:
System rack4slot6.osadl.org (updated Mon Feb 06, 2023 12:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1931421240,1sleep70-21swapper/712:37:497
16094521170,107pltrace0-21swapper/507:10:015
16094521140,103pltrace0-21swapper/107:09:571
13281521090,105pltrace0-21swapper/607:05:136
1609452950,80pltrace0-21swapper/207:08:492
1416952820,7pltrace1653999cyclictest09:42:015
1605027862,12sleep30-21swapper/307:06:403
1546452770,1pltrace15468-21pltrace-run11:27:020
1363052750,0pltrace0-21swapper/510:52:015
1363052750,0pltrace0-21swapper/510:52:015
286072740,0sleep30-21swapper/311:40:243
995552720,0pltrace0-21swapper/707:52:007
1853652720,0pltrace0-21swapper/510:57:015
1853652720,0pltrace0-21swapper/510:57:015
2341952670,1pltrace0-21swapper/709:12:007
8392650,0sleep40-21swapper/407:35:254
1602726549,12sleep00-21swapper/007:06:210
695152640,0pltrace0-21swapper/110:12:001
89582630,0sleep50-21swapper/508:50:015
1625826144,12sleep70-21swapper/707:09:177
1597325943,12sleep40-21swapper/407:05:374
2406252400,0pltrace24066-21tail08:17:013
262282250,4sleep61654599cyclictest07:25:176
16521992419,3cyclictest0-21swapper/210:57:152
16521992419,3cyclictest0-21swapper/210:57:152
1652199230,16cyclictest0-21swapper/212:12:502
182382220,0sleep40-21swapper/408:05:294
16508992215,1cyclictest101rcuc/011:35:250
16532991910,7cyclictest0-21swapper/411:17:344
16532991910,7cyclictest0-21swapper/411:07:404
1651599190,12cyclictest0-21swapper/109:43:151
927652180,2pltrace111rcu_preempt09:39:035
3188752180,3pltrace0-21swapper/112:20:211
2523952180,1pltrace25-21ksoftirqd/211:37:242
1651599181,13cyclictest0-21swapper/107:55:581
155552180,0sleep40-21swapper/410:55:134
155552180,0sleep40-21swapper/410:55:134
3111052170,2pltrace31448-21sh09:22:411
3111052170,13pltrace0-21swapper/509:26:255
28082170,0sleep60-21swapper/612:20:246
2523952170,0pltrace0-21swapper/111:37:191
1654599171,9cyclictest0-21swapper/611:32:026
16539991712,3cyclictest0-21swapper/508:13:135
16532991711,3cyclictest0-21swapper/411:31:194
1653299171,4cyclictest0-21swapper/408:01:064
1652199171,4cyclictest0-21swapper/207:28:152
16508991712,3cyclictest0-21swapper/007:20:530
388652160,2pltrace111rcu_preempt10:42:465
1853652160,2pltrace23145-21sh11:01:271
1655299160,1cyclictest0-21swapper/710:14:107
16545991611,2cyclictest0-21swapper/610:55:136
16545991611,2cyclictest0-21swapper/610:55:126
16545991611,2cyclictest0-21swapper/609:05:126
16545991611,2cyclictest0-21swapper/608:56:386
16545991610,3cyclictest0-21swapper/611:09:006
1654599161,8cyclictest0-21swapper/609:47:346
1654599160,15cyclictest0-21swapper/608:54:266
16539991612,3cyclictest0-21swapper/511:30:005
16539991611,3cyclictest0-21swapper/511:20:585
16539991611,2cyclictest0-21swapper/509:45:285
1653999160,4cyclictest0-21swapper/511:37:205
16532991611,2cyclictest0-21swapper/411:28:434
1653299161,4cyclictest0-21swapper/407:16:214
16521991611,3cyclictest0-21swapper/208:06:332
16521991610,3cyclictest0-21swapper/209:22:242
1652199161,7cyclictest0-21swapper/209:20:002
16515991610,4cyclictest0-21swapper/111:23:291
1650899163,12cyclictest0-21swapper/011:10:270
1650899161,8cyclictest0-21swapper/011:04:450
1650899160,15cyclictest0-21swapper/007:10:220
1650899160,1cyclictest111rcu_preempt12:32:240
1407552160,0pltrace0-21swapper/112:35:091
927652150,11pltrace10225-21ssh09:38:552
570552150,0pltrace5709-21tail11:17:015
54962150,0sleep60-21swapper/609:30:236
3188752150,2pltrace43-21ksoftirqd/512:21:185
3188752150,0pltrace0-21swapper/212:21:162
3111052150,1pltrace55-21ksoftirqd/709:22:507
2189352150,1pltrace0-21swapper/109:54:311
1672552150,0pltrace0-21swapper/510:25:515
16545991511,3cyclictest0-21swapper/611:53:326
16545991510,2cyclictest0-21swapper/610:45:276
16545991510,2cyclictest0-21swapper/607:52:396
1654599150,3cyclictest0-21swapper/610:01:466
16539991513,1cyclictest0-21swapper/509:57:015
16539991511,2cyclictest0-21swapper/508:24:565
1653999151,7cyclictest0-21swapper/511:51:515
1653999151,7cyclictest0-21swapper/507:47:035
1653999151,1cyclictest0-21swapper/512:05:265
1653999150,8cyclictest0-21swapper/507:36:205
1653999150,4cyclictest0-21swapper/509:06:505
16532991513,1cyclictest0-21swapper/412:14:114
1653299150,2cyclictest16986-21ssh09:47:014
16528991513,1cyclictest0-21swapper/309:56:263
16528991513,1cyclictest0-21swapper/309:44:363
1652899150,14cyclictest0-21swapper/311:15:463
1652199159,3cyclictest0-21swapper/210:20:502
16521991513,1cyclictest0-21swapper/211:48:202
16521991510,3cyclictest0-21swapper/210:36:292
16521991510,3cyclictest0-21swapper/209:54:492
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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