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2023-06-06 - 15:12

x86 Intel N455 @1660 MHz, Linux 5.15.49-rt47 (Profile)

Latency plot of system in rack #3, 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 -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 792 highest latencies:
System rack3slot6 (updated Tue Jun 06, 2023 12:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
283569912089,20cyclictest26-21ksoftirqd/107:10:171
283569912088,19cyclictest26-21ksoftirqd/111:05:231
283569911886,20cyclictest26-21ksoftirqd/110:45:191
283569911787,19cyclictest26-21ksoftirqd/108:30:311
283569911786,17cyclictest26-21ksoftirqd/110:35:221
283569911690,15cyclictest26-21ksoftirqd/107:35:211
283569911685,20cyclictest26-21ksoftirqd/111:15:241
283569911685,20cyclictest26-21ksoftirqd/107:25:241
283569911685,20cyclictest26-21ksoftirqd/107:25:241
283569911684,21cyclictest26-21ksoftirqd/110:30:231
283569911684,20cyclictest26-21ksoftirqd/107:20:201
283569911684,18cyclictest26-21ksoftirqd/109:25:281
283569911683,19cyclictest26-21ksoftirqd/110:55:181
283569911588,18cyclictest26-21ksoftirqd/108:00:191
283569911586,19cyclictest26-21ksoftirqd/109:50:211
283569911584,18cyclictest26-21ksoftirqd/110:40:241
283569911583,21cyclictest26-21ksoftirqd/110:20:231
283569911583,18cyclictest26-21ksoftirqd/109:20:231
283569911487,18cyclictest26-21ksoftirqd/111:35:211
283569911486,15cyclictest26-21ksoftirqd/112:20:181
283569911484,19cyclictest26-21ksoftirqd/107:50:171
283569911484,19cyclictest26-21ksoftirqd/107:30:201
283569911484,17cyclictest26-21ksoftirqd/108:35:201
283569911483,20cyclictest26-21ksoftirqd/111:10:211
283569911483,20cyclictest26-21ksoftirqd/110:10:221
283569911483,19cyclictest26-21ksoftirqd/112:30:221
283569911481,21cyclictest26-21ksoftirqd/111:30:201
283569911388,17cyclictest26-21ksoftirqd/107:45:191
283569911384,19cyclictest26-21ksoftirqd/109:14:411
283569911383,20cyclictest26-21ksoftirqd/109:45:211
283569911383,20cyclictest26-21ksoftirqd/109:15:171
283569911382,17cyclictest26-21ksoftirqd/108:45:181
283569911381,23cyclictest26-21ksoftirqd/109:30:191
283569911380,20cyclictest26-21ksoftirqd/112:00:221
283569911283,19cyclictest26-21ksoftirqd/111:40:211
283569911283,19cyclictest26-21ksoftirqd/111:40:211
283569911283,18cyclictest26-21ksoftirqd/112:35:201
283569911282,19cyclictest26-21ksoftirqd/111:50:201
283569911281,20cyclictest26-21ksoftirqd/108:05:241
283569911184,16cyclictest26-21ksoftirqd/109:40:221
283569911183,17cyclictest26-21ksoftirqd/111:00:191
283569911083,15cyclictest26-21ksoftirqd/108:55:231
283569911082,19cyclictest26-21ksoftirqd/107:55:171
283569911080,17cyclictest26-21ksoftirqd/110:50:221
283569910979,17cyclictest26-21ksoftirqd/108:20:221
283569910879,15cyclictest26-21ksoftirqd/111:45:221
283569910677,19cyclictest26-21ksoftirqd/111:20:241
283569910674,20cyclictest26-21ksoftirqd/110:00:221
283569910674,20cyclictest26-21ksoftirqd/110:00:221
28356999774,17cyclictest26-21ksoftirqd/108:40:211
28356999670,18cyclictest26-21ksoftirqd/112:15:191
2777529519,28sleep00-21swapper/007:05:480
2788829215,30sleep10-21swapper/107:07:021
28353998724,46cyclictest14-21ksoftirqd/010:35:220
28356998651,24cyclictest26-21ksoftirqd/110:25:221
28356998549,29cyclictest26-21ksoftirqd/110:15:191
28353998531,40cyclictest14-21ksoftirqd/008:00:310
28356998453,20cyclictest26-21ksoftirqd/109:35:221
2835699839,61cyclictest605-21runrttasks11:25:211
28356998348,24cyclictest26-21ksoftirqd/112:05:241
28356998346,25cyclictest26-21ksoftirqd/109:55:201
28356998230,40cyclictest26-21ksoftirqd/107:15:231
28356998148,23cyclictest26-21ksoftirqd/109:05:191
28356998112,54cyclictest0-21swapper/111:55:221
28356998030,35cyclictest26-21ksoftirqd/108:15:181
28356997949,20cyclictest26-21ksoftirqd/112:10:201
28356997941,22cyclictest0-21swapper/108:25:261
28353997730,29cyclictest0-21swapper/007:35:210
2835399757,22cyclictest22741-21apt-get10:05:210
28356997435,29cyclictest26-21ksoftirqd/109:00:221
28356997311,53cyclictest0-21swapper/110:05:211
2835699727,53cyclictest27813-21kworker/u8:108:50:221
28353997240,25cyclictest14-21ksoftirqd/010:25:350
28353997225,28cyclictest14-21ksoftirqd/008:15:170
28356997140,20cyclictest0-21swapper/107:40:211
28353997138,28cyclictest14-21ksoftirqd/011:00:310
28353997035,30cyclictest14-21ksoftirqd/010:15:450
28356996911,44cyclictest605-21runrttasks12:25:201
28353996935,29cyclictest14-21ksoftirqd/008:25:430
28353996934,20cyclictest14-21ksoftirqd/007:23:510
28353996913,39cyclictest14-21ksoftirqd/007:55:160
2835399688,8cyclictest151rcu_preempt09:40:000
28353996833,21cyclictest14-21ksoftirqd/011:25:340
298452670,10sleep027503-21kworker/0:012:00:450
28353996737,23cyclictest14-21ksoftirqd/007:18:500
28353996710,18cyclictest151rcu_preempt10:20:210
28353996637,9cyclictest14-21ksoftirqd/008:45:370
28353996636,9cyclictest14-21ksoftirqd/011:10:290
28353996631,29cyclictest14-21ksoftirqd/008:34:050
28353996537,13cyclictest14-21ksoftirqd/011:35:040
28353996424,22cyclictest14-21ksoftirqd/011:53:470
28353996419,14cyclictest14-21ksoftirqd/012:35:050
28353996414,34cyclictest0-21swapper/008:50:200
28356996313,38cyclictest0-21swapper/108:10:261
28353996334,9cyclictest14-21ksoftirqd/008:10:420
2835399624,21cyclictest1-21systemd08:08:590
28353996225,31cyclictest14-21ksoftirqd/010:55:250
28353996145,10cyclictest14-21ksoftirqd/009:34:170
28353996132,9cyclictest14-21ksoftirqd/009:05:420
28353996118,24cyclictest0-21swapper/009:00:190
28353996112,31cyclictest0-21swapper/009:10:220
28353996024,18cyclictest14-21ksoftirqd/012:15:380
28353996015,27cyclictest14-21ksoftirqd/009:55:360
2835399598,16cyclictest151rcu_preempt07:45:000
28353995942,10cyclictest14-21ksoftirqd/009:50:430
28353995942,10cyclictest14-21ksoftirqd/009:25:460
28353995940,12cyclictest14-21ksoftirqd/012:05:370
28353995940,12cyclictest14-21ksoftirqd/011:15:380
28353995935,19cyclictest14-21ksoftirqd/010:44:320
28353995922,31cyclictest0-21swapper/007:53:570
28353995913,28cyclictest0-21swapper/009:20:220
28353995841,9cyclictest14-21ksoftirqd/012:10:370
28353995841,10cyclictest14-21ksoftirqd/011:05:420
28353995841,10cyclictest14-21ksoftirqd/010:10:370
28353995841,10cyclictest14-21ksoftirqd/008:35:440
28353995841,10cyclictest14-21ksoftirqd/007:10:210
28353995840,11cyclictest14-21ksoftirqd/012:25:290
28353995840,11cyclictest14-21ksoftirqd/011:45:260
28353995840,10cyclictest14-21ksoftirqd/010:30:430
28353995840,10cyclictest14-21ksoftirqd/007:45:410
28353995839,11cyclictest14-21ksoftirqd/008:40:430
28353995838,13cyclictest14-21ksoftirqd/010:45:410
28353995821,9cyclictest0-21swapper/008:59:100
28353995811,30cyclictest0-21swapper/012:20:180
2835399576,45cyclictest0-21swapper/011:55:260
28353995740,10cyclictest14-21ksoftirqd/011:20:400
28353995740,10cyclictest14-21ksoftirqd/010:00:360
28353995740,10cyclictest14-21ksoftirqd/010:00:360
28353995740,10cyclictest14-21ksoftirqd/009:45:320
28353995739,10cyclictest14-21ksoftirqd/011:40:420
28353995739,10cyclictest14-21ksoftirqd/011:40:420
2835399573,16cyclictest19882-21apt-get08:20:220
2835399565,45cyclictest0-21swapper/010:50:170
28353995641,9cyclictest14-21ksoftirqd/007:25:300
28353995641,9cyclictest14-21ksoftirqd/007:25:300
28353995640,10cyclictest14-21ksoftirqd/009:40:350
28353995639,10cyclictest14-21ksoftirqd/011:30:250
28353995639,10cyclictest14-21ksoftirqd/007:35:010
28353995638,10cyclictest14-21ksoftirqd/012:30:160
28353995539,9cyclictest14-21ksoftirqd/009:15:170
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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