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2026-03-11 - 21:35
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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 rackdslot4.osadl.org (updated Wed Mar 11, 2026 12:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591220157,51phc2sys0-21swapper/307:08:563
180542206172,23sleep10-21swapper/107:06:401
180832202169,22sleep00-21swapper/007:07:030
181652200167,22sleep20-21swapper/207:08:012
1074921650,5sleep31861399cyclictest08:00:003
2492321400,6sleep21861299cyclictest09:30:252
138491670,1ptp4l401ktimersoftd/308:55:253
14422630,5sleep341-21ksoftirqd/310:55:153
130262590,7sleep01861099cyclictest10:15:010
272002580,3sleep227204-21ptp4l10:40:222
18613995821,9cyclictest41-21ksoftirqd/307:15:123
84442540,3sleep38446-21cpuspeed_turbos10:05:123
18610995421,3cyclictest9-21ksoftirqd/009:25:010
138491540,1ptp4l401ktimersoftd/308:51:403
18611995322,4cyclictest25-21ksoftirqd/108:00:121
18610995324,3cyclictest9-21ksoftirqd/007:15:010
18610995324,3cyclictest9-21ksoftirqd/007:15:010
70282520,2sleep10-21swapper/107:50:201
70282520,2sleep10-21swapper/107:50:191
18611995218,4cyclictest25-21ksoftirqd/110:25:261
18610995219,3cyclictest9-21ksoftirqd/009:40:250
1861099516,4cyclictest9-21ksoftirqd/009:50:000
18610995122,4cyclictest9-21ksoftirqd/007:35:130
18610995121,4cyclictest9-21ksoftirqd/012:15:000
18610994919,3cyclictest9-21ksoftirqd/011:30:130
18611994815,11cyclictest25-21ksoftirqd/107:10:181
18611994815,11cyclictest25-21ksoftirqd/107:10:181
18611994815,10cyclictest25-21ksoftirqd/107:30:181
18610994816,4cyclictest9-21ksoftirqd/010:15:230
18610994717,4cyclictest9-21ksoftirqd/012:05:120
18610994715,4cyclictest9-21ksoftirqd/008:50:000
18610994712,3cyclictest9-21ksoftirqd/011:50:150
151572470,1sleep315156-21unixbench_multi08:05:273
1861199468,9cyclictest25-21ksoftirqd/109:20:151
18611994630,3cyclictest25-21ksoftirqd/111:40:001
18610994618,3cyclictest9-21ksoftirqd/012:30:100
18611994530,11cyclictest10606-21apt09:05:001
18611994510,7cyclictest25-21ksoftirqd/107:40:001
18610994516,3cyclictest9-21ksoftirqd/009:55:140
18610994515,4cyclictest9-21ksoftirqd/009:15:250
18610994514,4cyclictest9-21ksoftirqd/009:05:000
18610994414,3cyclictest9-21ksoftirqd/010:35:130
18610994413,3cyclictest9-21ksoftirqd/010:00:140
138491440,35ptp4l0-21swapper/307:10:003
138491440,35ptp4l0-21swapper/307:10:003
18611994330,3cyclictest25-21ksoftirqd/108:05:151
18611994310,10cyclictest25-21ksoftirqd/111:20:131
18610994314,4cyclictest9-21ksoftirqd/012:35:130
138491430,0ptp4l401ktimersoftd/312:13:503
18613994237,3cyclictest41-21ksoftirqd/308:40:003
18613994236,3cyclictest41-21ksoftirqd/309:20:003
18611994237,3cyclictest25-21ksoftirqd/110:24:591
18611994237,3cyclictest25-21ksoftirqd/108:15:001
1861199421,3cyclictest121rcu_preempt09:55:121
1861199420,2cyclictest25-21ksoftirqd/112:40:011
18610994236,3cyclictest9-21ksoftirqd/007:25:010
18610994228,4cyclictest9-21ksoftirqd/011:59:590
18610994213,4cyclictest9-21ksoftirqd/007:50:140
18610994213,4cyclictest9-21ksoftirqd/007:50:130
138491420,0ptp4l401ktimersoftd/309:30:483
138491420,0ptp4l401ktimersoftd/307:51:033
138491420,0ptp4l401ktimersoftd/307:51:023
1861399411,3cyclictest121rcu_preempt10:20:163
18611994135,3cyclictest25-21ksoftirqd/108:00:001
18611994134,4cyclictest25-21ksoftirqd/112:35:001
1861199412,2cyclictest121rcu_preempt10:35:171
18610994114,3cyclictest9-21ksoftirqd/011:40:130
1861099411,3cyclictest15735-21sshd11:23:410
18610994113,3cyclictest9-21ksoftirqd/008:35:140
138491410,0ptp4l401ktimersoftd/312:20:243
138491410,0ptp4l401ktimersoftd/312:20:243
18611994035,3cyclictest25-21ksoftirqd/112:15:221
18611994035,3cyclictest25-21ksoftirqd/107:29:591
1861199402,7cyclictest25-21ksoftirqd/110:05:241
1861199402,7cyclictest121rcu_preempt09:05:211
1861199400,3cyclictest25-21ksoftirqd/109:10:221
1861099405,3cyclictest9-21ksoftirqd/007:25:200
18610994026,4cyclictest9-21ksoftirqd/009:05:200
18610994012,3cyclictest9-21ksoftirqd/011:05:170
138491400,0ptp4l401ktimersoftd/309:59:483
1861199399,10cyclictest25-21ksoftirqd/109:40:151
1861199398,6cyclictest25-21ksoftirqd/109:45:151
1861199394,7cyclictest25-21ksoftirqd/110:30:151
1861199394,3cyclictest121rcu_preempt09:30:121
18611993934,3cyclictest25-21ksoftirqd/110:45:001
18611993934,3cyclictest25-21ksoftirqd/109:20:001
18611993933,3cyclictest25-21ksoftirqd/107:50:001
18611993924,7cyclictest25-21ksoftirqd/111:50:001
18611993923,5cyclictest25-21ksoftirqd/111:05:161
1861099398,4cyclictest9-21ksoftirqd/010:45:130
1861099392,3cyclictest5606-1kworker/dying12:20:130
1861099392,3cyclictest5606-1kworker/dying12:20:130
18610993911,3cyclictest9-21ksoftirqd/008:00:260
18610993910,4cyclictest9-21ksoftirqd/007:40:190
18613993831,4cyclictest41-21ksoftirqd/311:59:153
1861199386,6cyclictest25-21ksoftirqd/111:55:241
18611993832,3cyclictest25-21ksoftirqd/111:00:241
18611993832,3cyclictest25-21ksoftirqd/110:19:591
18611993832,3cyclictest25-21ksoftirqd/108:20:011
1861199382,3cyclictest121rcu_preempt08:50:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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