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2022-12-05 - 06:16

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 100 highest latencies:
System rack3slot6 (updated Mon Dec 05, 2022 00:45:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
285189912593,22cyclictest14-21ksoftirqd/021:05:170
285189912393,19cyclictest14-21ksoftirqd/021:00:130
285189912293,20cyclictest14-21ksoftirqd/000:05:170
285189912292,20cyclictest14-21ksoftirqd/019:30:140
285189912291,20cyclictest14-21ksoftirqd/020:05:160
285189912291,19cyclictest14-21ksoftirqd/022:55:200
285189912189,20cyclictest14-21ksoftirqd/019:55:150
285189911988,19cyclictest14-21ksoftirqd/019:15:160
1827821170,7chrt18275-21latency_hist21:50:011
285189911585,17cyclictest14-21ksoftirqd/021:40:150
285209911251,49cyclictest26-21ksoftirqd/121:10:151
285209911067,31cyclictest26-21ksoftirqd/122:25:151
285209911067,31cyclictest26-21ksoftirqd/122:25:151
285209911057,38cyclictest26-21ksoftirqd/122:55:191
285189910972,22cyclictest14-21ksoftirqd/020:10:260
285189910878,19cyclictest14-21ksoftirqd/023:30:140
285189910674,19cyclictest14-21ksoftirqd/019:40:180
285209910536,57cyclictest0-21swapper/123:10:171
285209910519,68cyclictest0-21swapper/122:50:161
285209910514,77cyclictest0-21swapper/122:05:171
285209910510,80cyclictest0-21swapper/122:20:131
285209910413,79cyclictest0-21swapper/121:20:221
285209910412,77cyclictest0-21swapper/100:20:151
285189910372,20cyclictest14-21ksoftirqd/020:25:140
285189910311,78cyclictest0-21swapper/020:00:150
285209910212,78cyclictest0-21swapper/123:45:141
285209910212,27cyclictest0-21swapper/100:30:141
285189910270,20cyclictest14-21ksoftirqd/000:30:160
28520991019,27cyclictest0-21swapper/122:40:141
285209910115,72cyclictest0-21swapper/123:20:171
285209910112,74cyclictest0-21swapper/119:35:181
285209910112,70cyclictest0-21swapper/122:35:171
285209910111,80cyclictest0-21swapper/119:58:551
285209910111,75cyclictest0-21swapper/123:40:151
285209910016,72cyclictest0-21swapper/121:50:131
285209910016,70cyclictest0-21swapper/100:10:201
285209910013,76cyclictest0-21swapper/120:20:161
285189910065,22cyclictest14-21ksoftirqd/019:20:170
285189910017,72cyclictest14-21ksoftirqd/022:20:150
28520999914,71cyclictest0-21swapper/119:25:131
28520999912,75cyclictest0-21swapper/122:30:241
28520999912,75cyclictest0-21swapper/120:50:121
28518999967,21cyclictest14-21ksoftirqd/021:55:150
28520999811,24cyclictest0-21swapper/100:05:181
28518999853,30cyclictest14-21ksoftirqd/000:15:160
28520999714,25cyclictest0-21swapper/123:00:191
28520999712,72cyclictest0-21swapper/100:35:171
28520999712,25cyclictest0-21swapper/123:55:181
28520999712,25cyclictest0-21swapper/123:55:171
28520999711,26cyclictest0-21swapper/123:25:161
28520999711,24cyclictest0-21swapper/120:55:201
28520999711,24cyclictest0-21swapper/120:55:191
28520999710,25cyclictest0-21swapper/121:25:121
28518999766,20cyclictest14-21ksoftirqd/022:50:140
28518999764,24cyclictest14-21ksoftirqd/023:40:180
2852099969,25cyclictest0-21swapper/123:05:201
28520999612,25cyclictest0-21swapper/120:05:191
28520999611,25cyclictest0-21swapper/120:30:121
2851899967,40cyclictest14-21ksoftirqd/000:00:120
28518999524,59cyclictest0-21swapper/000:35:190
28520999412,25cyclictest0-21swapper/119:50:231
28520999411,23cyclictest0-21swapper/121:40:171
28520999341,33cyclictest0-21swapper/123:50:141
28520999314,57cyclictest0-21swapper/119:40:191
28520999312,68cyclictest0-21swapper/122:10:171
28520999228,47cyclictest0-21swapper/121:55:161
28520999214,23cyclictest0-21swapper/120:40:151
28518999261,20cyclictest14-21ksoftirqd/023:20:160
28518999250,29cyclictest14-21ksoftirqd/019:25:170
28518999246,32cyclictest14-21ksoftirqd/022:10:150
28518999155,25cyclictest14-21ksoftirqd/022:00:160
28518999155,25cyclictest14-21ksoftirqd/022:00:150
28518999147,30cyclictest14-21ksoftirqd/022:40:180
28520999014,25cyclictest0-21swapper/122:15:141
28518999057,21cyclictest14-21ksoftirqd/023:15:160
28518999054,23cyclictest14-21ksoftirqd/000:25:160
28518999012,63cyclictest0-21swapper/021:15:160
28520998912,56cyclictest0-21swapper/120:00:121
28518998940,37cyclictest14-21ksoftirqd/021:20:260
28518998911,64cyclictest0-21swapper/022:35:180
2852099888,30cyclictest7986-21apt-get19:45:161
2852099888,30cyclictest7986-21apt-get19:45:151
28518998858,20cyclictest14-21ksoftirqd/019:45:180
28518998858,20cyclictest14-21ksoftirqd/019:45:180
28518998836,40cyclictest14-21ksoftirqd/020:45:150
2851899879,61cyclictest31958-21taskset20:55:200
2851899879,61cyclictest31958-21taskset20:55:200
2808728731,46sleep10-21swapper/119:07:201
2808728731,46sleep10-21swapper/119:07:201
2851899867,64cyclictest23728-21seq20:30:130
28518998630,44cyclictest14-21ksoftirqd/020:20:190
28518998629,44cyclictest14-21ksoftirqd/020:35:160
28520998520,22cyclictest489-21gdbus23:40:001
28518998526,46cyclictest14-21ksoftirqd/019:50:230
28518998512,59cyclictest0-21swapper/020:15:130
28518998433,39cyclictest14-21ksoftirqd/023:35:200
2852099828,24cyclictest26-21ksoftirqd/121:05:191
28520998232,28cyclictest26-21ksoftirqd/122:00:151
28520998232,28cyclictest26-21ksoftirqd/122:00:141
28518998212,59cyclictest0-21swapper/022:05:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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