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2022-01-26 - 13:09

Intel(R) Core(TM) i7-3770K CPU @ 3.50GHz, Linux 5.15.2-rt19 (Profile)

Latency plot of system in rack #0, slot #2
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 -h400 -q --smi
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 rack0slot2.osadl.org (updated Mon Jan 03, 2022 00:43:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
352689521380,4sleep552-21ksoftirqd/521:14:445
370808821350,1sleep60-21swapper/600:36:366
361513321340,1sleep10-21swapper/122:51:261
360028921280,2sleep03600290-21awk22:34:490
345745826652,10sleep30-21swapper/319:04:363
345958226248,10sleep40-21swapper/419:08:554
345938525541,10sleep20-21swapper/219:06:042
36111142540,1sleep4441rcuc/422:47:284
37091782530,1sleep20-21swapper/200:38:572
36545082530,4sleep338-21ksoftirqd/323:37:473
36504872530,1sleep50-21swapper/523:33:485
35356402520,1sleep50-21swapper/521:24:305
345957625223,10sleep70-21swapper/719:08:507
35846612510,2sleep7651rcuc/722:18:457
35663872500,1sleep00-21swapper/021:58:170
36244602490,1sleep50-21swapper/523:02:055
36113292490,2sleep0161rcuc/022:47:570
35642112490,1chrt0-21swapper/221:54:502
218289490,36rtkit-daemon0-21swapper/619:05:056
36391122470,1sleep10-21swapper/123:19:491
35377562470,4sleep766-21ksoftirqd/721:24:567
34814252460,1sleep20-21swapper/219:49:412
35411752440,7sleep338-21ksoftirqd/321:29:493
345745624416,10sleep10-21swapper/119:04:341
35884572430,4sleep552-21ksoftirqd/522:22:115
35323792420,1sleep30-21swapper/321:19:473
34955442420,5sleep4451ksoftirqd/420:14:534
36382092400,2sleep0161rcuc/023:19:400
35792242400,2sleep6581rcuc/622:11:466
34595092397,10sleep50-21swapper/519:07:515
35840852380,4sleep338-21ksoftirqd/322:17:283
35707782370,1sleep30-21swapper/322:03:013
36466742360,1sleep4441rcuc/423:29:304
35881582360,2sleep6581rcuc/622:21:326
35713192350,2sleep1231rcuc/122:04:111
36943332340,1sleep60-21swapper/600:21:046
35635022310,4sleep338-21ksoftirqd/321:54:433
35438292300,1sleep766-21ksoftirqd/721:33:147
35360412300,1sleep20-21swapper/221:24:432
345941022915,10sleep00-21swapper/019:06:260
37032792260,5chrt45-21ksoftirqd/400:30:574
36888272260,2sleep3371rcuc/300:14:523
36057552260,1sleep0161rcuc/022:40:350
35934352240,1sleep50-21swapper/522:28:135
34673382240,1sleep40-21swapper/419:19:524
36988552230,4chrt38-21ksoftirqd/300:26:073
36849152230,1chrt0-21swapper/400:10:124
36849152230,1chrt0-21swapper/400:10:124
36562782230,5chrt45-21ksoftirqd/423:39:414
36088822230,1chrt0-21swapper/122:44:451
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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