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2026-09-08 - 01:19
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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 Mon Sep 07, 2026 12:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
145512203166,25sleep30-21swapper/307:07:203
146912202169,22sleep10-21swapper/107:09:111
146322202169,22sleep20-21swapper/207:08:252
144642202169,22sleep00-21swapper/007:06:140
1800721630,4sleep21520399cyclictest08:20:122
1070821500,7sleep11520299cyclictest10:15:141
420721220,2sleep20-21swapper/211:05:212
138491700,1ptp4l391rcuc/311:55:143
138491640,0ptp4l401ktimersoftd/312:22:193
17182570,2sleep20-21swapper/209:55:212
15202995513,13cyclictest25-21ksoftirqd/108:25:241
138491550,1ptp4l391rcuc/308:45:183
138491550,0ptp4l401ktimersoftd/310:04:303
1520199542,5cyclictest15483-21latency_hist11:30:000
1520199531,6cyclictest8388-21fschecks_time08:00:140
1520199531,6cyclictest8388-21fschecks_time08:00:140
138491530,1ptp4l401ktimersoftd/308:57:383
138491530,1ptp4l401ktimersoftd/308:57:383
1520199522,5cyclictest101ktimersoftd/009:20:000
1520199521,5cyclictest22339-21grep09:30:260
285992510,4sleep09-21ksoftirqd/007:35:170
1520199513,7cyclictest5009-21tail08:55:250
1520199513,7cyclictest5009-21tail08:55:250
1520199513,6cyclictest30964-21uniq08:45:160
1520199503,7cyclictest19188-21grep07:15:240
1520199501,6cyclictest13279-21tune2fs08:10:150
1520199492,5cyclictest31956-21phc2sys12:00:230
1520199492,5cyclictest101ktimersoftd/010:40:020
1520199491,7cyclictest101ktimersoftd/011:45:280
1520199491,6cyclictest101ktimersoftd/010:30:000
1520199490,7cyclictest101ktimersoftd/007:50:010
147992490,2sleep30-21swapper/309:15:253
1520299484,2cyclictest121rcu_preempt07:25:001
15202994818,8cyclictest25-21ksoftirqd/110:50:001
15202994816,4cyclictest25-21ksoftirqd/109:40:271
15202994816,4cyclictest25-21ksoftirqd/109:40:261
15202994815,4cyclictest25-21ksoftirqd/109:45:181
1520299480,2cyclictest121rcu_preempt08:55:241
1520299480,2cyclictest121rcu_preempt08:55:241
1520199483,6cyclictest17374-21tail09:20:280
1520199482,6cyclictest9-21ksoftirqd/010:40:020
1520199481,6cyclictest16252-21fschecks_time11:30:160
1520199481,5cyclictest101ktimersoftd/009:25:260
1520199480,6cyclictest101ktimersoftd/011:55:150
15202994715,4cyclictest25-21ksoftirqd/108:40:231
1520199474,5cyclictest9-21ksoftirqd/010:20:210
1520199472,6cyclictest20499-21expr07:20:150
1520199470,6cyclictest101ktimersoftd/009:40:120
1520199470,6cyclictest101ktimersoftd/009:40:120
1520199470,6cyclictest101ktimersoftd/009:10:130
1520299467,10cyclictest25-21ksoftirqd/111:25:001
1520199464,4cyclictest9-21ksoftirqd/008:35:170
1520199462,6cyclictest8843-21irqrtprio10:10:190
1520199462,6cyclictest31077-21cut10:55:140
1520199462,5cyclictest101ktimersoftd/009:00:260
1520199461,5cyclictest16636-21processes07:10:240
1520199461,5cyclictest101ktimersoftd/009:35:130
1520199460,43cyclictest101ktimersoftd/011:50:140
250522450,1sleep00-21swapper/007:30:000
15202994510,14cyclictest25-21ksoftirqd/110:38:281
1520199451,5cyclictest101ktimersoftd/007:30:160
1520199450,7cyclictest101ktimersoftd/012:20:240
1520199450,6cyclictest101ktimersoftd/012:25:130
1520199450,5cyclictest101ktimersoftd/012:30:210
1520199450,5cyclictest101ktimersoftd/011:35:210
1520199450,42cyclictest101ktimersoftd/009:50:010
162132440,1sleep30-21swapper/312:35:163
15202994439,3cyclictest25-21ksoftirqd/112:25:001
1520299440,2cyclictest121rcu_preempt09:30:001
1520299440,2cyclictest121rcu_preempt08:55:011
1520199443,5cyclictest101ktimersoftd/007:40:220
1520299432,3cyclictest121rcu_preempt12:10:171
1520299432,3cyclictest121rcu_preempt12:10:161
15202994315,4cyclictest25-21ksoftirqd/111:05:151
15202994314,4cyclictest25-21ksoftirqd/109:55:321
1520299431,3cyclictest121rcu_preempt12:30:251
1520299431,3cyclictest121rcu_preempt12:15:261
1520299430,40cyclictest19959-21sh07:20:011
1520199433,5cyclictest3381-21sort07:50:160
1520199431,7cyclictest8927-21irqrtprio11:15:190
1520199430,5cyclictest152302chrt08:15:010
1520199430,5cyclictest101ktimersoftd/010:05:190
138491430,0ptp4l401ktimersoftd/311:22:203
138491430,0ptp4l401ktimersoftd/309:30:363
138491430,0ptp4l401ktimersoftd/309:00:343
1520299428,11cyclictest25-21ksoftirqd/111:40:161
1520299425,10cyclictest25-21ksoftirqd/107:25:211
15202994239,2cyclictest25-21ksoftirqd/107:59:591
15202994214,4cyclictest25-21ksoftirqd/109:05:131
1520299420,2cyclictest121rcu_preempt08:05:191
1520199423,6cyclictest9-21ksoftirqd/012:10:160
1520199423,6cyclictest9-21ksoftirqd/012:10:160
1520199422,6cyclictest10882-21grep10:15:140
1520199421,7cyclictest22217-21ls11:40:270
1520199420,5cyclictest101ktimersoftd/011:15:000
1520299418,3cyclictest25-21ksoftirqd/108:45:181
1520299416,4cyclictest25-21ksoftirqd/108:39:591
15202994129,10cyclictest25-21ksoftirqd/111:30:151
15202994127,4cyclictest25-21ksoftirqd/110:30:261
15202994114,4cyclictest25-21ksoftirqd/110:10:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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