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2023-01-27 - 14:57

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, Linux 4.9.20-rt16, x86_64 highest latencies:
System rackdslot4.osadl.org (updated Fri Jan 27, 2023 00:46:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2117221330,2sleep00-21swapper/000:35:260
281842127106,9sleep10-21swapper/119:08:181
564981170,10rtkit-daemon563-21rtkit-daemon19:07:302
1299911130,4ptp4l401ktimersoftd/319:05:273
123452890,2sleep20-21swapper/220:50:282
307672760,2sleep30-21swapper/321:30:233
28606997535,6cyclictest33-21ksoftirqd/220:05:012
28607996921,9cyclictest41-21ksoftirqd/322:30:303
28606996915,5cyclictest33-21ksoftirqd/221:35:122
28606996915,5cyclictest33-21ksoftirqd/221:35:112
28606996857,6cyclictest33-21ksoftirqd/200:30:122
128282680,2sleep30-21swapper/319:45:123
28607996736,5cyclictest41-21ksoftirqd/300:20:283
28607996731,4cyclictest41-21ksoftirqd/319:10:153
28606996728,5cyclictest33-21ksoftirqd/222:30:002
28607996651,4cyclictest41-21ksoftirqd/321:40:113
28607996651,4cyclictest41-21ksoftirqd/321:40:113
28607996613,4cyclictest41-21ksoftirqd/320:00:013
56498650,18rtkit-daemon0-21swapper/019:55:290
28607996553,5cyclictest41-21ksoftirqd/320:40:123
28606996529,5cyclictest33-21ksoftirqd/222:35:162
28606996520,5cyclictest33-21ksoftirqd/223:45:192
28607996452,6cyclictest41-21ksoftirqd/319:40:123
28607996445,5cyclictest41-21ksoftirqd/320:35:013
28607996427,4cyclictest41-21ksoftirqd/300:05:133
28606996451,5cyclictest33-21ksoftirqd/223:05:052
28607996352,6cyclictest41-21ksoftirqd/322:55:123
28607996317,5cyclictest41-21ksoftirqd/322:25:013
2860699639,10cyclictest33-21ksoftirqd/223:22:172
28606996327,5cyclictest33-21ksoftirqd/219:10:172
28607996251,6cyclictest41-21ksoftirqd/323:45:133
28607996223,8cyclictest41-21ksoftirqd/300:00:233
28607996210,10cyclictest41-21ksoftirqd/320:20:163
28607996150,6cyclictest41-21ksoftirqd/322:15:113
28606996143,4cyclictest33-21ksoftirqd/220:20:182
28606996140,5cyclictest33-21ksoftirqd/222:15:162
2860699613,3cyclictest33-21ksoftirqd/223:40:132
28606996128,9cyclictest33-21ksoftirqd/222:30:172
28606996126,4cyclictest33-21ksoftirqd/222:10:232
28606996124,5cyclictest33-21ksoftirqd/220:30:002
2860799608,10cyclictest41-21ksoftirqd/321:08:323
28607996039,7cyclictest41-21ksoftirqd/300:25:343
28607996019,4cyclictest41-21ksoftirqd/323:40:003
28606996043,4cyclictest33-21ksoftirqd/219:39:592
28606996023,5cyclictest33-21ksoftirqd/222:55:142
28607995948,5cyclictest41-21ksoftirqd/322:00:113
28607995946,7cyclictest41-21ksoftirqd/320:05:113
28607995944,4cyclictest41-21ksoftirqd/319:25:003
28606995952,4cyclictest33-21ksoftirqd/221:50:052
28606995941,5cyclictest33-21ksoftirqd/222:40:262
28606995911,4cyclictest33-21ksoftirqd/220:35:572
173712590,2sleep30-21swapper/322:10:223
28607995848,5cyclictest41-21ksoftirqd/321:45:123
28607995847,6cyclictest41-21ksoftirqd/320:45:133
28607995845,7cyclictest41-21ksoftirqd/320:00:123
2860699585,9cyclictest33-21ksoftirqd/223:05:012
28606995851,4cyclictest33-21ksoftirqd/223:59:592
2860699584,9cyclictest33-21ksoftirqd/219:54:582
28606995823,4cyclictest121rcu_preempt20:05:152
28606995818,4cyclictest33-21ksoftirqd/200:20:002
28607995748,4cyclictest41-21ksoftirqd/321:50:123
28607995741,4cyclictest41-21ksoftirqd/300:40:003
28607995711,3cyclictest121rcu_preempt20:27:163
2860699576,3cyclictest33-21ksoftirqd/223:15:332
28606995751,4cyclictest33-21ksoftirqd/220:45:002
28606995725,9cyclictest33-21ksoftirqd/219:40:292
28607995649,4cyclictest41-21ksoftirqd/322:00:013
28607995649,4cyclictest41-21ksoftirqd/321:20:003
28607995646,5cyclictest41-21ksoftirqd/323:00:113
28607995641,4cyclictest41-21ksoftirqd/323:55:193
28607995639,4cyclictest41-21ksoftirqd/322:35:263
28606995650,3cyclictest33-21ksoftirqd/219:20:002
28606995641,11cyclictest33-21ksoftirqd/220:45:302
28606995637,5cyclictest33-21ksoftirqd/222:45:262
28607995548,4cyclictest41-21ksoftirqd/323:10:003
28607995545,5cyclictest41-21ksoftirqd/323:10:113
28607995545,5cyclictest41-21ksoftirqd/323:10:113
28607995543,6cyclictest41-21ksoftirqd/319:25:113
28607995540,4cyclictest41-21ksoftirqd/319:30:183
28607995540,4cyclictest41-21ksoftirqd/300:35:003
28607995539,4cyclictest41-21ksoftirqd/322:45:003
28607995538,4cyclictest41-21ksoftirqd/323:25:243
28607995536,4cyclictest41-21ksoftirqd/320:55:003
2860699554,3cyclictest121rcu_preempt21:30:202
28606995539,12cyclictest33-21ksoftirqd/220:55:292
28606995519,5cyclictest33-21ksoftirqd/219:25:252
28606995518,10cyclictest33-21ksoftirqd/200:25:152
28607995446,5cyclictest41-21ksoftirqd/320:10:123
28607995446,5cyclictest41-21ksoftirqd/320:10:113
28607995439,4cyclictest41-21ksoftirqd/323:15:323
28607995438,4cyclictest41-21ksoftirqd/320:35:163
28607995438,4cyclictest41-21ksoftirqd/319:15:293
28607995436,4cyclictest41-21ksoftirqd/321:00:203
28607995435,5cyclictest41-21ksoftirqd/321:20:263
28607995416,10cyclictest41-21ksoftirqd/322:45:233
28606995449,3cyclictest33-21ksoftirqd/222:10:012
28606995447,4cyclictest33-21ksoftirqd/223:40:002
28606995435,4cyclictest33-21ksoftirqd/219:45:212
2860699541,10cyclictest33-21ksoftirqd/222:54:102
2860699540,3cyclictest121rcu_preempt20:30:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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