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2026-05-24 - 08:52
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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 rackdslot3.osadl.org (updated Sun May 24, 2026 00:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
286232229164,21sleep30-21swapper/319:06:343
286062201168,22sleep10-21swapper/119:06:201
286052201167,22sleep00-21swapper/019:06:180
286372200167,22sleep20-21swapper/219:06:442
2889729071,10sleep00-21swapper/019:10:000
157052670,1sleep115706-21/usr/sbin/munin23:10:141
29188996516,4cyclictest9-21ksoftirqd/022:04:590
14072560,3sleep31406-21tune2fs22:40:153
8892550,4sleep1241ktimersoftd/121:30:211
139391550,1ptp4l401ktimersoftd/322:11:313
29189995417,10cyclictest25-21ksoftirqd/122:40:141
29189995322,3cyclictest121rcu_preempt20:35:131
139391530,1ptp4l401ktimersoftd/323:08:103
29191995247,3cyclictest4326-21idleruntime-cro21:39:593
2919199522,47cyclictest18718-21basename00:25:003
29189995219,7cyclictest25-21ksoftirqd/122:20:261
114342520,2sleep00-21swapper/020:45:190
114342520,2sleep00-21swapper/020:45:180
29189995112,4cyclictest25-21ksoftirqd/100:37:291
29189995016,7cyclictest25-21ksoftirqd/123:50:231
29189995014,5cyclictest25-21ksoftirqd/121:15:181
29189995014,5cyclictest25-21ksoftirqd/121:15:181
29189994934,3cyclictest25-21ksoftirqd/123:35:181
29189994911,9cyclictest25-21ksoftirqd/121:20:261
29189994910,7cyclictest25-21ksoftirqd/119:29:311
2919099482,44cyclictest27783-21kworker/2:021:40:252
2918999489,10cyclictest25-21ksoftirqd/123:05:161
2918999485,3cyclictest25-21ksoftirqd/121:00:161
2918999484,2cyclictest24792-21apt21:15:001
29189994813,4cyclictest25-21ksoftirqd/120:28:211
2919099470,45cyclictest0-21swapper/223:35:232
2918999479,8cyclictest25-21ksoftirqd/122:09:421
2918999479,4cyclictest25-21ksoftirqd/100:30:261
2918999476,7cyclictest25-21ksoftirqd/120:00:001
29189994735,4cyclictest25-21ksoftirqd/100:00:001
2918999473,2cyclictest25-21ksoftirqd/119:20:141
29189994711,4cyclictest25-21ksoftirqd/120:40:011
29189994615,4cyclictest25-21ksoftirqd/119:35:161
29189994614,8cyclictest25-21ksoftirqd/120:30:151
29189994610,2cyclictest121rcu_preempt19:41:331
2919099459,33cyclictest11084-21kworker/2:223:44:242
2918999459,4cyclictest25-21ksoftirqd/121:45:161
2918999459,4cyclictest25-21ksoftirqd/121:45:161
2918999459,3cyclictest25-21ksoftirqd/122:35:121
2918999456,3cyclictest25-21ksoftirqd/122:45:261
2918999454,5cyclictest25-21ksoftirqd/122:55:211
2918999454,5cyclictest25-21ksoftirqd/121:50:181
2918999454,3cyclictest25-21ksoftirqd/122:30:201
2918999453,2cyclictest25-21ksoftirqd/100:15:231
2918999452,4cyclictest25-21ksoftirqd/100:00:221
29189994516,8cyclictest25-21ksoftirqd/123:40:161
29189994513,4cyclictest25-21ksoftirqd/119:10:251
29189994510,9cyclictest25-21ksoftirqd/123:20:351
29190994415,27cyclictest16139-21kworker/2:119:55:242
2918999445,2cyclictest25-21ksoftirqd/122:15:081
2918999444,6cyclictest25-21ksoftirqd/123:30:201
2918999443,2cyclictest25-21ksoftirqd/120:50:261
29189994416,10cyclictest25-21ksoftirqd/121:40:231
29189994411,3cyclictest25-21ksoftirqd/120:18:151
29189994410,3cyclictest25-21ksoftirqd/119:48:141
29189994410,3cyclictest25-21ksoftirqd/119:48:141
2918899442,3cyclictest9-21ksoftirqd/000:25:190
139391440,0ptp4l401ktimersoftd/321:55:023
139391440,0ptp4l401ktimersoftd/321:47:533
139391440,0ptp4l401ktimersoftd/321:47:533
2918999438,3cyclictest25-21ksoftirqd/119:15:261
2918999436,3cyclictest25-21ksoftirqd/120:10:451
2918999435,2cyclictest25-21ksoftirqd/120:24:481
2918999433,7cyclictest25-21ksoftirqd/120:45:261
2918999433,7cyclictest25-21ksoftirqd/120:45:261
29189994333,3cyclictest25-21ksoftirqd/119:50:271
29189994332,3cyclictest25-21ksoftirqd/100:29:351
29189994328,5cyclictest25-21ksoftirqd/122:02:021
2918999432,2cyclictest25-21ksoftirqd/123:25:241
2918999432,2cyclictest25-21ksoftirqd/121:05:251
29189994313,4cyclictest25-21ksoftirqd/120:05:231
29189994310,4cyclictest25-21ksoftirqd/122:10:121
2918999430,3cyclictest25-21ksoftirqd/123:45:181
2918999430,3cyclictest25-21ksoftirqd/120:55:251
139391430,0ptp4l401ktimersoftd/321:25:243
2919199421,39cyclictest31842-21cron23:45:003
2918999425,3cyclictest25-21ksoftirqd/120:02:261
2918999421,3cyclictest25-21ksoftirqd/119:30:241
2918999421,3cyclictest25-21ksoftirqd/100:05:271
29189994210,7cyclictest25-21ksoftirqd/100:24:551
29188994214,4cyclictest9-21ksoftirqd/022:25:260
29188994213,3cyclictest9-21ksoftirqd/021:05:140
29188994212,3cyclictest9-21ksoftirqd/021:45:310
29188994212,3cyclictest9-21ksoftirqd/021:45:310
29191994136,3cyclictest41-21ksoftirqd/319:30:003
29190994134,4cyclictest8912-21cron19:35:002
2918999414,3cyclictest121rcu_preempt21:55:181
29189994136,3cyclictest25-21ksoftirqd/121:25:211
2918999411,2cyclictest25-21ksoftirqd/122:25:271
29188994110,3cyclictest9-21ksoftirqd/021:25:130
57898400,8rtkit-daemon0-21swapper/319:52:463
2918999405,2cyclictest1317-21runrttasks00:12:101
29189994035,2cyclictest25-21ksoftirqd/121:40:001
29189994034,3cyclictest25-21ksoftirqd/123:00:131
29188994013,3cyclictest9-21ksoftirqd/022:55:260
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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