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2021-06-20 - 03:38

Intel(R) Atom(TM) CPU E3845 @ 1.91GHz, 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 Sun Jun 20, 2021 00:46:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1208911740,6ptp4l401ktimersoftd/319:09:593
755821690,8sleep2406899cyclictest22:30:192
3480211492,10sleep20-21swapper/219:06:102
36242815,18sleep00-21swapper/019:07:580
4066997536,7cyclictest9-21ksoftirqd/021:10:130
4067997426,10cyclictest25-21ksoftirqd/123:10:131
4066997364,5cyclictest9-21ksoftirqd/020:25:120
4066997359,5cyclictest9-21ksoftirqd/019:15:120
4067997223,8cyclictest25-21ksoftirqd/120:15:141
4066997261,5cyclictest9-21ksoftirqd/021:25:130
248332710,3sleep20-21swapper/219:35:022
4066997061,6cyclictest9-21ksoftirqd/020:10:120
4066997057,7cyclictest9-21ksoftirqd/021:05:140
4066996962,4cyclictest9-21ksoftirqd/022:40:120
4068996860,5cyclictest33-21ksoftirqd/219:40:112
4068996860,5cyclictest33-21ksoftirqd/219:40:112
4067996818,8cyclictest25-21ksoftirqd/123:35:021
4067996722,9cyclictest25-21ksoftirqd/100:10:251
4067996718,8cyclictest25-21ksoftirqd/120:05:191
4067996622,10cyclictest25-21ksoftirqd/120:55:311
4067996619,9cyclictest25-21ksoftirqd/120:10:151
4067996619,8cyclictest25-21ksoftirqd/122:53:411
406799650,3cyclictest121rcu_preempt21:10:141
4066996553,6cyclictest9-21ksoftirqd/022:45:100
4066996530,4cyclictest9-21ksoftirqd/019:20:070
4067996416,8cyclictest25-21ksoftirqd/123:55:201
4066996453,5cyclictest9-21ksoftirqd/019:55:130
375626443,10sleep10-21swapper/119:09:401
297762640,6sleep3406999cyclictest21:40:053
4067996316,8cyclictest25-21ksoftirqd/120:35:091
4067996151,5cyclictest25-21ksoftirqd/122:45:111
4067996128,3cyclictest121rcu_preempt21:50:281
4066996150,6cyclictest9-21ksoftirqd/023:15:130
65152600,26sleep341-21ksoftirqd/319:10:183
4067996051,5cyclictest25-21ksoftirqd/100:05:111
4067996045,4cyclictest25-21ksoftirqd/121:30:151
406699601,14cyclictest18877-21users23:25:120
4067995951,5cyclictest25-21ksoftirqd/123:05:101
4067995945,4cyclictest25-21ksoftirqd/120:20:151
4067995924,7cyclictest25-21ksoftirqd/121:05:321
4067995923,10cyclictest25-21ksoftirqd/100:30:071
4067995814,10cyclictest25-21ksoftirqd/100:20:001
4066995851,4cyclictest9-21ksoftirqd/000:30:100
4066995847,6cyclictest9-21ksoftirqd/022:05:100
245102580,5sleep2311rcuc/220:15:002
217472580,6sleep0406699cyclictest22:50:040
4068995719,24cyclictest33-21ksoftirqd/223:45:122
4067995751,3cyclictest25-21ksoftirqd/119:10:121
4067995738,4cyclictest25-21ksoftirqd/122:20:011
4067995738,4cyclictest25-21ksoftirqd/122:20:011
4067995723,7cyclictest25-21ksoftirqd/119:20:021
4067995722,10cyclictest25-21ksoftirqd/123:40:091
406799570,4cyclictest121rcu_preempt22:15:241
406799566,4cyclictest25-21ksoftirqd/120:45:131
4067995650,3cyclictest25-21ksoftirqd/122:25:121
4067995649,4cyclictest25-21ksoftirqd/119:35:141
4067995647,5cyclictest25-21ksoftirqd/121:55:161
4067995640,7cyclictest25-21ksoftirqd/121:45:111
4067995623,10cyclictest25-21ksoftirqd/119:30:051
4067995612,9cyclictest25-21ksoftirqd/100:35:111
4066995645,5cyclictest9-21ksoftirqd/022:25:100
406799557,7cyclictest25-21ksoftirqd/121:40:141
406799557,4cyclictest25-21ksoftirqd/119:25:221
4067995544,3cyclictest25-21ksoftirqd/120:00:251
4067995521,3cyclictest121rcu_preempt23:20:281
4067995518,5cyclictest25-21ksoftirqd/119:18:021
406799551,12cyclictest6069-21iostat20:30:131
4067995510,9cyclictest25-21ksoftirqd/119:55:031
4067995510,7cyclictest25-21ksoftirqd/100:20:191
406699554,7cyclictest9-21ksoftirqd/019:30:000
4066995536,4cyclictest9-21ksoftirqd/020:30:140
4067995447,4cyclictest25-21ksoftirqd/100:25:111
406799543,4cyclictest121rcu_preempt20:25:171
4067995421,11cyclictest25-21ksoftirqd/121:00:031
4067995421,11cyclictest25-21ksoftirqd/121:00:031
4066995426,7cyclictest9-21ksoftirqd/022:00:320
4068995321,19cyclictest33-21ksoftirqd/221:10:132
4067995346,4cyclictest25-21ksoftirqd/119:55:001
4067995345,4cyclictest25-21ksoftirqd/123:45:131
4067995337,4cyclictest25-21ksoftirqd/122:00:151
4067995335,3cyclictest25-21ksoftirqd/122:05:131
4067995318,7cyclictest25-21ksoftirqd/123:30:031
4067995318,5cyclictest25-21ksoftirqd/122:40:161
4066995344,5cyclictest9-21ksoftirqd/023:50:120
406699533,3cyclictest121rcu_preempt00:05:100
4066995320,4cyclictest9-21ksoftirqd/021:15:130
120791531,4phc2sys13997-21apt-get21:20:103
406799527,11cyclictest25-21ksoftirqd/120:50:111
4067995246,4cyclictest25-21ksoftirqd/123:00:131
406799524,4cyclictest121rcu_preempt23:50:121
4067995244,5cyclictest25-21ksoftirqd/120:40:101
406799523,4cyclictest25-21ksoftirqd/100:00:061
4067995217,11cyclictest25-21ksoftirqd/119:40:041
4067995217,11cyclictest25-21ksoftirqd/119:40:031
4066995245,4cyclictest9-21ksoftirqd/021:55:240
4066995245,4cyclictest9-21ksoftirqd/021:20:100
4066995241,5cyclictest9-21ksoftirqd/020:35:130
406699522,5cyclictest9-21ksoftirqd/021:45:090
406799515,3cyclictest121rcu_preempt23:00:001
4067995146,3cyclictest25-21ksoftirqd/119:45:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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