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2023-02-02 - 16:20

x86 Intel Atom E3845 @1910 MHz, Linux 4.19.37-rt19 (Profile)

Latency plot of system in rack #d, slot #4
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 -Up99 -i200 -h400 --smi -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 100 highest latencies:
System rackdslot4.osadl.org (updated Thu Feb 02, 2023 12:46:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1293024310,6sleep00-21swapper/007:05:330
1831521800,8sleep11377899cyclictest11:50:231
469921710,8sleep11377899cyclictest09:05:321
1268421570,8sleep11377899cyclictest08:15:021
1299911560,4ptp4l401ktimersoftd/307:07:033
1632721530,5sleep31378099cyclictest11:45:273
13274211492,10sleep10-21swapper/107:07:131
13779999431,12cyclictest33-21ksoftirqd/211:40:002
13779999139,4cyclictest33-21ksoftirqd/211:30:012
13779999128,9cyclictest33-21ksoftirqd/212:20:002
13779998027,5cyclictest33-21ksoftirqd/210:15:362
13779997828,4cyclictest33-21ksoftirqd/208:05:342
13779997630,5cyclictest33-21ksoftirqd/210:20:192
13779997624,5cyclictest33-21ksoftirqd/209:40:172
13779997528,9cyclictest33-21ksoftirqd/207:21:262
13779997524,6cyclictest33-21ksoftirqd/207:30:382
13779997423,5cyclictest33-21ksoftirqd/211:10:202
13779997324,5cyclictest33-21ksoftirqd/207:45:322
13779997321,9cyclictest33-21ksoftirqd/208:22:372
13779997223,5cyclictest33-21ksoftirqd/209:00:022
13779997223,5cyclictest33-21ksoftirqd/208:15:302
13779997222,5cyclictest33-21ksoftirqd/210:42:142
13779997136,5cyclictest33-21ksoftirqd/212:30:132
13779997131,5cyclictest33-21ksoftirqd/211:55:172
13779997124,5cyclictest33-21ksoftirqd/209:59:282
13779997124,5cyclictest33-21ksoftirqd/209:59:272
13779997028,9cyclictest33-21ksoftirqd/209:40:002
13779997021,5cyclictest33-21ksoftirqd/210:00:212
13779997021,5cyclictest33-21ksoftirqd/210:00:212
13779997020,9cyclictest33-21ksoftirqd/209:07:562
13779997019,9cyclictest33-21ksoftirqd/208:29:512
133482709,48sleep20-21swapper/207:08:102
95042690,1sleep10-21swapper/110:25:001
13779996962,4cyclictest33-21ksoftirqd/212:10:132
13779996922,12cyclictest33-21ksoftirqd/210:45:302
13779996861,4cyclictest33-21ksoftirqd/210:25:172
13779996838,3cyclictest33-21ksoftirqd/207:35:242
13779996837,3cyclictest33-21ksoftirqd/207:40:232
13779996823,12cyclictest33-21ksoftirqd/208:50:272
13779996819,8cyclictest33-21ksoftirqd/211:50:012
13779996761,3cyclictest33-21ksoftirqd/211:00:132
13779996760,4cyclictest33-21ksoftirqd/208:40:182
13779996741,3cyclictest33-21ksoftirqd/211:40:182
13779996719,10cyclictest33-21ksoftirqd/208:35:002
13779996719,10cyclictest33-21ksoftirqd/208:35:002
13779996660,4cyclictest33-21ksoftirqd/212:25:142
13779996624,5cyclictest33-21ksoftirqd/212:36:592
13779996531,9cyclictest33-21ksoftirqd/208:55:342
13779996523,5cyclictest33-21ksoftirqd/207:27:132
13779996521,5cyclictest33-21ksoftirqd/211:07:162
13779996519,9cyclictest33-21ksoftirqd/207:10:312
13779996419,10cyclictest33-21ksoftirqd/209:20:242
13779996355,4cyclictest33-21ksoftirqd/210:35:052
13779996320,10cyclictest33-21ksoftirqd/207:55:242
13779996153,4cyclictest5360-21cron11:25:002
13779996125,10cyclictest33-21ksoftirqd/212:20:202
13780996053,4cyclictest9859-21cron08:10:003
13779996054,3cyclictest33-21ksoftirqd/209:15:052
1377999604,7cyclictest121rcu_preempt09:45:372
1377999600,3cyclictest33-21ksoftirqd/210:10:222
129991600,1ptp4l401ktimersoftd/308:28:063
13779995952,4cyclictest33-21ksoftirqd/210:55:002
13779995926,9cyclictest33-21ksoftirqd/208:05:002
13779995918,10cyclictest33-21ksoftirqd/210:33:492
13779995851,4cyclictest33-21ksoftirqd/207:20:002
13779995825,10cyclictest33-21ksoftirqd/211:50:322
13780995750,4cyclictest41-21ksoftirqd/312:25:003
1377999566,8cyclictest33-21ksoftirqd/211:30:202
1377999566,8cyclictest33-21ksoftirqd/211:30:192
1377999566,8cyclictest33-21ksoftirqd/210:55:172
1377999565,8cyclictest33-21ksoftirqd/208:45:422
13779995651,3cyclictest33-21ksoftirqd/209:15:012
13779995650,4cyclictest33-21ksoftirqd/208:10:342
1377999564,9cyclictest33-21ksoftirqd/212:00:252
13779995649,4cyclictest33-21ksoftirqd/207:50:282
1377999562,4cyclictest33-21ksoftirqd/210:05:272
1377999552,8cyclictest121rcu_preempt09:35:002
1377999544,8cyclictest33-21ksoftirqd/211:15:212
1377999544,8cyclictest33-21ksoftirqd/209:50:342
13779995448,4cyclictest33-21ksoftirqd/208:35:312
13780995348,3cyclictest41-21ksoftirqd/307:20:003
13780995347,4cyclictest41-21ksoftirqd/311:45:003
13779995346,4cyclictest33-21ksoftirqd/212:05:302
13780995247,3cyclictest41-21ksoftirqd/309:20:003
13780995246,4cyclictest41-21ksoftirqd/311:19:593
13780995246,3cyclictest41-21ksoftirqd/312:40:003
13780995245,4cyclictest41-21ksoftirqd/308:15:053
13779995245,4cyclictest33-21ksoftirqd/209:25:332
13780995144,4cyclictest41-21ksoftirqd/310:00:003
13780995144,4cyclictest41-21ksoftirqd/310:00:003
13780995044,4cyclictest41-21ksoftirqd/308:45:223
13778995032,15cyclictest25-21ksoftirqd/109:36:031
13780994944,3cyclictest41-21ksoftirqd/310:14:593
13780994944,3cyclictest41-21ksoftirqd/309:40:003
13780994943,3cyclictest41-21ksoftirqd/312:34:593
13780994943,3cyclictest41-21ksoftirqd/307:35:003
13780994943,3cyclictest41-21ksoftirqd/307:30:013
13780994942,4cyclictest41-21ksoftirqd/309:25:003
13780994844,3cyclictest41-21ksoftirqd/309:00:013
13780994844,3cyclictest41-21ksoftirqd/307:45:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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