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2022-11-30 - 00:39

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 Tue Nov 29, 2022 12:45:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23423991186,88cyclictest0-21swapper/010:55:150
23423991167,88cyclictest0-21swapper/010:05:250
234289911081,18cyclictest26-21ksoftirqd/111:30:151
234289910980,19cyclictest26-21ksoftirqd/110:50:141
234289910878,19cyclictest26-21ksoftirqd/112:25:141
234289910878,16cyclictest26-21ksoftirqd/109:37:211
234289910878,16cyclictest26-21ksoftirqd/109:37:201
234289910774,17cyclictest26-21ksoftirqd/109:10:161
234289910676,19cyclictest26-21ksoftirqd/110:15:221
234289910676,19cyclictest26-21ksoftirqd/110:15:211
234289910675,19cyclictest26-21ksoftirqd/108:20:141
234289910675,18cyclictest26-21ksoftirqd/108:15:151
234289910674,21cyclictest26-21ksoftirqd/109:55:181
234289910578,19cyclictest26-21ksoftirqd/109:05:181
234289910578,15cyclictest26-21ksoftirqd/109:00:241
234289910577,19cyclictest26-21ksoftirqd/109:40:181
234289910576,19cyclictest26-21ksoftirqd/108:30:241
234289910576,16cyclictest26-21ksoftirqd/111:00:141
234289910576,16cyclictest26-21ksoftirqd/111:00:131
234289910574,17cyclictest26-21ksoftirqd/107:55:141
234289910574,17cyclictest26-21ksoftirqd/107:55:141
234289910572,18cyclictest26-21ksoftirqd/109:25:171
234289910475,18cyclictest26-21ksoftirqd/112:35:181
234289910473,18cyclictest26-21ksoftirqd/107:20:231
234289910374,17cyclictest26-21ksoftirqd/111:05:211
234289910275,16cyclictest26-21ksoftirqd/111:50:151
234289910176,17cyclictest26-21ksoftirqd/109:45:171
234289910175,18cyclictest26-21ksoftirqd/109:20:191
234289910175,18cyclictest26-21ksoftirqd/107:30:141
234289910170,20cyclictest26-21ksoftirqd/107:50:211
234289910169,21cyclictest26-21ksoftirqd/111:20:161
234289910070,20cyclictest26-21ksoftirqd/109:30:171
23428999973,17cyclictest26-21ksoftirqd/111:10:171
23428999970,20cyclictest26-21ksoftirqd/108:25:151
23428999969,18cyclictest26-21ksoftirqd/110:20:251
23428999968,20cyclictest26-21ksoftirqd/108:35:201
23428999968,20cyclictest26-21ksoftirqd/108:35:201
23428999770,18cyclictest26-21ksoftirqd/110:25:141
23428999769,17cyclictest26-21ksoftirqd/111:40:171
23428999765,20cyclictest26-21ksoftirqd/109:15:131
23428999668,16cyclictest26-21ksoftirqd/107:35:161
23428999666,18cyclictest26-21ksoftirqd/109:50:201
23428999567,17cyclictest26-21ksoftirqd/110:45:161
23423999511,62cyclictest0-21swapper/008:50:110
23428999056,27cyclictest26-21ksoftirqd/110:05:251
2342899893,61cyclictest1920-21uname07:40:271
23428998922,43cyclictest28978-21pluginstate12:15:331
23428998921,43cyclictest21737-21head08:40:221
23423998910,22cyclictest0-21swapper/008:00:150
2342899885,74cyclictest0-21swapper/111:25:201
23428998828,49cyclictest26-21ksoftirqd/112:20:201
23428998819,43cyclictest22200-21awk11:55:341
23428998818,42cyclictest550-21runrttasks10:10:061
23428998818,41cyclictest550-21runrttasks10:37:031
2342399888,63cyclictest0-21swapper/012:35:200
2342899872,58cyclictest25582-21find08:50:351
23428998719,43cyclictest2316-21sort12:35:011
23428998719,43cyclictest2316-21sort12:35:011
23428998710,63cyclictest0-21swapper/108:00:161
2342899869,62cyclictest0-21swapper/108:55:151
2342899868,65cyclictest0-21swapper/108:10:161
2342899865,51cyclictest0-21swapper/107:15:011
23428998613,42cyclictest0-21swapper/110:44:301
2342399868,59cyclictest0-21swapper/011:10:190
2342899859,62cyclictest0-21swapper/111:15:171
2342899859,61cyclictest0-21swapper/111:45:231
23428998564,13cyclictest261ksoftirqd/112:00:141
2342899853,56cyclictest25561-21seq07:15:091
23428998517,41cyclictest550-21runrttasks10:31:371
23428998511,60cyclictest0-21swapper/108:05:201
2342399858,58cyclictest0-21swapper/009:20:150
2342399857,22cyclictest0-21swapper/009:40:210
2342899849,67cyclictest0-21swapper/108:45:131
2342399848,22cyclictest0-21swapper/012:05:180
2342899832,56cyclictest3188-21runrttasks07:45:121
23428998312,58cyclictest0-21swapper/110:00:221
23428998310,61cyclictest0-21swapper/111:35:201
2342399838,25cyclictest14-21ksoftirqd/007:39:560
2342899828,60cyclictest0-21swapper/107:25:161
2342899823,51cyclictest3212-21runrttasks10:59:491
2295728225,45sleep10-21swapper/107:07:011
23428998110,60cyclictest0-21swapper/112:10:171
2342399817,56cyclictest0-21swapper/008:15:150
2342899809,59cyclictest0-21swapper/112:05:211
23423997936,25cyclictest14-21ksoftirqd/010:20:210
2342399787,54cyclictest0-21swapper/012:30:170
2342399787,54cyclictest0-21swapper/012:30:170
23423997829,31cyclictest0-21swapper/011:30:160
23423997736,25cyclictest0-21swapper/007:15:140
23423997610,47cyclictest0-21swapper/008:30:220
23423997532,29cyclictest14-21ksoftirqd/010:40:160
23423997515,18cyclictest30565-21ntp_states09:05:340
2342399745,53cyclictest182362sleep011:45:220
2297727416,49sleep00-21swapper/007:07:140
23423997131,24cyclictest0-21swapper/008:05:160
23423997123,15cyclictest14-21ksoftirqd/011:20:010
23423997120,14cyclictest14-21ksoftirqd/008:50:010
23423997019,15cyclictest14-21ksoftirqd/010:50:000
2342399676,45cyclictest0-21swapper/012:15:150
23423996723,15cyclictest14-21ksoftirqd/010:30:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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