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2025-12-28 - 13:07
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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 Sun Dec 28, 2025 00:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12645992414,0cyclictest0-21swapper/121:49:231
1264599230,7cyclictest0-21swapper/119:29:511
1264599220,4cyclictest0-21swapper/120:17:251
1264699208,11cyclictest0-21swapper/222:45:192
1264699204,15cyclictest0-21swapper/223:28:182
12646992018,1cyclictest0-21swapper/219:25:512
12646992016,3cyclictest0-21swapper/221:00:022
12646992016,3cyclictest0-21swapper/200:07:272
12646992010,0cyclictest0-21swapper/219:50:172
1264699200,4cyclictest11960-21perf23:55:012
1264699200,1cyclictest0-21swapper/222:30:002
1264599204,15cyclictest21-21ksoftirqd/120:05:211
1264599200,5cyclictest0-21swapper/121:01:131
12644992016,3cyclictest0-21swapper/023:14:320
12644992016,3cyclictest0-21swapper/020:21:000
12646991916,2cyclictest4100-21H222:10:212
12646991916,2cyclictest26403-21idleruntime-cro00:20:002
1264699190,16cyclictest24074-21nfsd420:25:202
1264599194,1cyclictest0-21swapper/100:24:151
1264599192,16cyclictest0-21swapper/123:45:471
1264599191,3cyclictest26228-21strings23:20:171
12645991913,5cyclictest0-21swapper/100:26:241
1264599190,3cyclictest0-21swapper/123:05:011
12644991917,1cyclictest0-21swapper/022:00:000
12644991916,2cyclictest8749-21smartctl20:55:210
12644991916,2cyclictest3981-21H222:10:210
1264499191,15cyclictest0-21swapper/023:40:190
1264499190,18cyclictest843-21systemd-network00:04:090
1264499190,18cyclictest0-21swapper/023:20:000
1264499190,18cyclictest0-21swapper/021:17:550
1264499190,17cyclictest4058-21nvmesmart_nvme022:40:200
1264499190,16cyclictest3985-21H222:10:210
1264699182,15cyclictest0-21swapper/221:10:132
12646991816,1cyclictest27950-21needreboot00:20:162
12646991816,1cyclictest0-21swapper/220:30:072
12646991816,1cyclictest0-21swapper/219:10:182
12646991815,2cyclictest7188-21grep21:50:172
12646991815,2cyclictest23978-21cat22:20:182
12646991814,3cyclictest0-21swapper/223:00:152
12646991812,3cyclictest0-21swapper/221:45:022
1264699181,16cyclictest0-21swapper/220:24:382
1264699180,3cyclictest2007-21systemd-journal19:56:472
1264699180,17cyclictest843-21systemd-network23:55:542
1264699180,17cyclictest745-21kernelversion19:45:192
1264699180,17cyclictest5002-21cat20:50:152
1264699180,17cyclictest3981-21H222:10:212
1264699180,17cyclictest0-21swapper/221:20:232
1264699180,16cyclictest3989-21H222:10:212
1264599182,15cyclictest26696-21nfsd420:30:211
1264599182,15cyclictest175642sleep122:09:171
12645991815,2cyclictest7495-21cpuspeed_turbos20:55:161
12645991814,3cyclictest0-21swapper/119:20:151
12645991814,1cyclictest0-21swapper/122:25:011
12645991813,4cyclictest3871-21kernelversion00:35:171
1264599180,17cyclictest16518-21nvmesmart_nvme000:00:191
12644991815,2cyclictest461-21cpuspeed_turbos21:40:130
1264499181,16cyclictest3450-21gsd-color20:25:200
1264499181,16cyclictest0-21swapper/019:30:170
1264499180,3cyclictest25269-21awk00:15:170
1264499180,3cyclictest1079-21cups-browsed21:25:220
1264499180,17cyclictest0-21swapper/023:55:000
1264699172,1cyclictest0-21swapper/200:35:142
12646991714,2cyclictest9076-21ls20:55:232
12646991714,2cyclictest4206-21grep23:40:132
12646991714,2cyclictest30948-21nfsd421:35:192
12646991714,2cyclictest22959-21fschecks_time23:15:152
12646991714,2cyclictest16463-21nfsd400:00:182
12646991714,2cyclictest1515-21lxd22:08:472
12646991714,2cyclictest10810-21pluginstate22:55:002
1264699171,15cyclictest207392chrt22:15:032
1264699171,15cyclictest0-21swapper/221:15:132
1264699170,2cyclictest24134-21apt-config21:25:022
1264699170,2cyclictest21498-21cpuspeed_turbos00:10:152
1264699170,2cyclictest18724-21expr19:20:152
1264699170,2cyclictest1525-21lxd20:08:472
1264699170,2cyclictest1351-21lxd23:22:322
1264699170,1cyclictest3989-21H222:10:212
1264699170,1cyclictest3985-21H222:10:212
1264699170,1cyclictest0-21swapper/221:09:402
1264699170,16cyclictest9220-21awk20:00:192
1264699170,16cyclictest843-21systemd-network19:38:002
1264699170,16cyclictest5823-21python321:50:012
1264699170,16cyclictest455-21plymouthd22:35:222
1264699170,16cyclictest3881-21nfsd422:40:192
1264699170,16cyclictest32064-21mailstats23:30:222
1264699170,16cyclictest31816-21cron00:30:012
1264699170,16cyclictest29503-21expr22:30:132
1264699170,16cyclictest28419-21smartctl21:30:192
1264699170,16cyclictest19043-21sessionclean23:09:002
1264699170,16cyclictest16304-21fschecks_count19:15:172
1264699170,16cyclictest13121-21fschecks_time22:00:182
1264699170,16cyclictest0-21swapper/219:34:102
12645991715,1cyclictest238692sleep119:30:111
12645991715,1cyclictest21-21ksoftirqd/120:40:191
12645991715,1cyclictest0-21swapper/122:27:391
12645991715,1cyclictest0-21swapper/121:40:201
12645991714,2cyclictest9071-21expr22:50:141
12645991714,2cyclictest5177-21latency23:40:171
12645991714,2cyclictest29909-21expr19:40:161
12645991714,2cyclictest25531-21cut21:25:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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