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2025-11-20 - 00:16
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 rackdslot0.osadl.org (updated Wed Nov 19, 2025 12:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16358993635,0cyclictest0-21swapper/011:45:180
16358992323,0cyclictest0-21swapper/011:05:200
16360992113,6cyclictest0-21swapper/208:45:012
16359992120,1cyclictest21-21ksoftirqd/111:53:111
1635999210,18cyclictest0-21swapper/110:10:011
16358992115,5cyclictest0-21swapper/010:50:000
16359992018,1cyclictest0-21swapper/108:39:131
1635999200,5cyclictest0-21swapper/109:28:451
16358992017,2cyclictest4526-21H212:26:330
16358992017,2cyclictest4523-21H212:26:330
16360991917,1cyclictest28-21ksoftirqd/212:02:162
16360991917,1cyclictest28-21ksoftirqd/212:02:162
16360991917,1cyclictest0-21swapper/209:40:562
16360991916,2cyclictest4538-21H212:26:332
16360991914,3cyclictest4523-21H212:26:332
1636099190,3cyclictest20514-21apt11:05:002
1636099190,2cyclictest4593-21H212:26:332
1636099190,2cyclictest4536-21H212:26:332
1636099190,2cyclictest4532-21H212:26:332
1636099190,2cyclictest4528-21H212:26:332
1636099190,1cyclictest0-21swapper/208:34:572
1636099190,1cyclictest0-21swapper/208:34:562
1636099190,17cyclictest4536-21H212:26:332
1636099190,16cyclictest4593-21H212:26:332
1636099190,16cyclictest4581-21H212:26:332
1636099190,16cyclictest4528-21H212:26:332
1635999194,1cyclictest4581-21H212:26:331
1635999193,2cyclictest4523-21H212:26:331
16359991917,1cyclictest0-21swapper/112:01:441
16359991917,1cyclictest0-21swapper/112:01:431
16359991917,1cyclictest0-21swapper/108:00:161
16359991917,1cyclictest0-21swapper/107:17:111
1635999191,2cyclictest0-21swapper/111:19:061
1635999190,1cyclictest0-21swapper/111:57:201
1635999190,18cyclictest4523-21H212:26:331
1635999190,16cyclictest4536-21H212:26:331
16358991917,1cyclictest0-21swapper/008:45:020
16358991916,3cyclictest0-21swapper/011:35:000
16358991916,2cyclictest25640-21cat10:15:150
16358991916,2cyclictest25640-21cat10:15:140
16358991916,2cyclictest17464-21expr11:55:150
16358991915,3cyclictest2079-21systemd-udevd07:41:070
16358991915,3cyclictest0-21swapper/011:15:000
1635899191,3cyclictest0-21swapper/009:27:250
16358991913,5cyclictest0-21swapper/008:45:220
1635899190,4cyclictest17472-21nfsd410:00:190
1635899190,17cyclictest4534-21H212:26:330
1635899190,16cyclictest4532-21H212:26:330
1635899190,16cyclictest4532-21H212:26:330
1635899190,16cyclictest4532-21H212:26:330
1635899190,16cyclictest4528-21H212:26:330
1636099182,1cyclictest28-21ksoftirqd/209:33:232
1636099182,15cyclictest0-21swapper/211:14:182
16360991816,1cyclictest29511-21cat07:30:202
16360991816,1cyclictest28-21ksoftirqd/207:49:042
16360991816,1cyclictest28-21ksoftirqd/207:24:452
16360991816,1cyclictest0-21swapper/207:15:272
16360991815,2cyclictest4534-21H212:26:332
16360991815,2cyclictest4526-21H212:26:332
16360991815,2cyclictest25280-21cpu07:25:162
16360991814,3cyclictest28617-21grep09:25:142
16360991814,3cyclictest23957-21grep10:10:232
1636099180,2cyclictest4593-21H212:26:332
1636099180,2cyclictest4536-21H212:26:332
1636099180,2cyclictest4534-21H212:26:332
1636099180,2cyclictest4526-21H212:26:332
1636099180,2cyclictest21762-21apt10:10:012
1636099180,17cyclictest4581-21H212:26:332
1636099180,17cyclictest4538-21H212:26:332
1636099180,17cyclictest4528-21H212:26:332
1635999182,1cyclictest0-21swapper/112:29:221
1635999182,15cyclictest4593-21H212:26:331
16359991816,1cyclictest21-21ksoftirqd/109:30:561
16359991816,1cyclictest21-21ksoftirqd/109:12:021
16359991816,1cyclictest0-21swapper/111:33:241
16359991815,2cyclictest32166-21if_eno112:20:191
16359991814,3cyclictest8421-21grep10:40:191
16359991813,2cyclictest4593-21H212:26:331
1635999181,2cyclictest17393-21nfsd408:05:191
1635999180,3cyclictest13615-21cpuspeed_turbos09:55:141
1635999180,2cyclictest4581-21H212:26:331
1635999180,17cyclictest4532-21H212:26:331
1635999180,17cyclictest0-21swapper/109:45:151
1635999180,16cyclictest4536-21H212:26:331
1635999180,15cyclictest4526-21H212:26:331
1635899182,15cyclictest325122chrt11:25:110
1635899182,15cyclictest13059-21cat10:50:160
1635899182,15cyclictest0-21swapper/008:20:150
1635899182,0cyclictest0-21swapper/011:53:490
16358991816,1cyclictest27541-21expr08:25:150
16358991816,1cyclictest0-21swapper/009:50:130
16358991816,1cyclictest0-21swapper/009:50:130
16358991816,1cyclictest0-21swapper/008:55:000
16358991816,1cyclictest0-21swapper/007:45:220
16358991815,2cyclictest4538-21H212:26:330
16358991814,3cyclictest4593-21H212:26:330
16358991814,3cyclictest4534-21H212:26:330
16358991814,3cyclictest0-21swapper/011:18:490
16358991814,2cyclictest4528-21H212:26:330
16358991812,1cyclictest0-21swapper/010:11:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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