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2026-05-21 - 21:20
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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 Thu May 21, 2026 12:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
188032235171,21sleep10-21swapper/107:08:101
138591205171,23phc2sys0-21swapper/307:06:283
186022203170,22sleep20-21swapper/207:05:342
167322202168,22sleep00-21swapper/007:05:080
1760721400,4sleep31924599cyclictest08:10:133
19245996232,2cyclictest41-21ksoftirqd/310:00:133
19262590,1sleep00-21swapper/008:45:020
1924299595,21cyclictest16662-21taskset08:06:570
19245995620,3cyclictest41-21ksoftirqd/312:40:003
228452530,3sleep341-21ksoftirqd/307:15:223
19245995221,4cyclictest41-21ksoftirqd/312:15:273
19245995219,6cyclictest41-21ksoftirqd/308:30:143
19245995121,7cyclictest41-21ksoftirqd/311:05:013
1924299512,18cyclictest0-21swapper/010:27:500
19245995029,3cyclictest41-21ksoftirqd/309:10:163
19245995023,7cyclictest41-21ksoftirqd/310:55:263
19245995023,7cyclictest41-21ksoftirqd/310:55:263
19245995019,4cyclictest41-21ksoftirqd/309:50:183
19245995019,3cyclictest41-21ksoftirqd/307:10:173
19245995016,4cyclictest41-21ksoftirqd/312:25:153
19245995016,4cyclictest41-21ksoftirqd/310:35:273
138491500,7ptp4l35792irq/125-enp1s0-08:20:193
19245994920,3cyclictest41-21ksoftirqd/308:45:013
19245994912,8cyclictest41-21ksoftirqd/307:39:593
19245994822,7cyclictest41-21ksoftirqd/307:40:163
19245994819,4cyclictest41-21ksoftirqd/311:20:153
19245994817,4cyclictest41-21ksoftirqd/307:34:593
19245994813,4cyclictest41-21ksoftirqd/312:05:173
1924599479,7cyclictest41-21ksoftirqd/307:50:173
19245994721,7cyclictest41-21ksoftirqd/307:55:133
19245994719,3cyclictest41-21ksoftirqd/312:20:233
19245994718,3cyclictest41-21ksoftirqd/307:20:243
19245994714,4cyclictest41-21ksoftirqd/308:15:183
19245994712,4cyclictest41-21ksoftirqd/310:15:153
1924599469,7cyclictest41-21ksoftirqd/309:05:133
19245994620,6cyclictest41-21ksoftirqd/312:00:263
19245994619,7cyclictest41-21ksoftirqd/309:40:233
19245994618,6cyclictest41-21ksoftirqd/308:05:123
19245994617,3cyclictest41-21ksoftirqd/309:30:143
19245994616,4cyclictest41-21ksoftirqd/310:10:273
1924299469,27cyclictest1434-21seq09:47:120
1924599459,7cyclictest41-21ksoftirqd/308:45:163
19245994519,6cyclictest41-21ksoftirqd/309:55:183
19245994518,7cyclictest41-21ksoftirqd/312:30:183
19245994518,7cyclictest41-21ksoftirqd/307:25:143
19245994516,4cyclictest41-21ksoftirqd/310:05:143
19245994512,9cyclictest41-21ksoftirqd/311:35:153
1924299451,3cyclictest0-21swapper/011:13:270
1924599449,7cyclictest41-21ksoftirqd/311:15:193
1924599449,7cyclictest41-21ksoftirqd/310:25:183
1924599448,9cyclictest41-21ksoftirqd/309:20:123
1924599446,8cyclictest41-21ksoftirqd/309:45:233
1924599444,9cyclictest41-21ksoftirqd/311:40:133
19245994431,3cyclictest41-21ksoftirqd/310:20:283
19245994419,7cyclictest41-21ksoftirqd/311:45:183
19245994417,7cyclictest41-21ksoftirqd/307:45:153
19245994414,3cyclictest41-21ksoftirqd/311:05:133
19245994413,8cyclictest41-21ksoftirqd/308:25:133
19245994412,10cyclictest41-21ksoftirqd/310:30:163
1924299448,27cyclictest6555-21seq07:47:030
138491440,0ptp4l401ktimersoftd/311:27:243
138491440,0ptp4l401ktimersoftd/311:27:243
1924599438,7cyclictest41-21ksoftirqd/310:50:133
19245994315,7cyclictest41-21ksoftirqd/308:55:133
19245994314,4cyclictest41-21ksoftirqd/308:51:363
19245994312,3cyclictest41-21ksoftirqd/311:10:243
19245994311,9cyclictest41-21ksoftirqd/308:05:003
1924599428,4cyclictest41-21ksoftirqd/310:45:243
19245994216,9cyclictest41-21ksoftirqd/309:00:223
19245994215,6cyclictest41-21ksoftirqd/309:25:133
19245994211,10cyclictest41-21ksoftirqd/309:35:183
1924299429,19cyclictest25056-21cut10:35:180
19245994110,8cyclictest41-21ksoftirqd/309:19:593
19245994030,2cyclictest41-21ksoftirqd/308:35:203
19243994029,9cyclictest25-21ksoftirqd/110:30:401
19245993934,3cyclictest41-21ksoftirqd/311:50:163
1924499390,2cyclictest10619-21strings10:05:232
1924299396,20cyclictest14092-21seq08:03:170
50798380,3rtkit-daemon1522-21apache211:15:281
19242993810,16cyclictest1303-21runrttasks11:30:290
201892370,1sleep20-21swapper/212:35:182
19245993732,3cyclictest41-21ksoftirqd/310:40:113
19244993729,5cyclictest33-21ksoftirqd/212:30:052
1924599364,8cyclictest41-21ksoftirqd/311:30:133
19245993632,2cyclictest41-21ksoftirqd/311:55:133
19245993632,2cyclictest41-21ksoftirqd/311:55:133
1924599360,2cyclictest121rcu_preempt12:10:143
19244993630,4cyclictest33-21ksoftirqd/211:18:282
19244993630,4cyclictest33-21ksoftirqd/210:02:012
19244993630,4cyclictest33-21ksoftirqd/209:01:392
19244993630,4cyclictest33-21ksoftirqd/207:58:412
19244993618,16cyclictest33-21ksoftirqd/211:23:012
19243993630,4cyclictest25-21ksoftirqd/110:24:391
1924399362,33cyclictest14159-21kworker/1:109:30:351
19242993630,4cyclictest9-21ksoftirqd/010:16:360
19242993629,4cyclictest9-21ksoftirqd/009:24:000
1924299361,2cyclictest0-21swapper/010:23:170
19244993529,4cyclictest33-21ksoftirqd/211:39:302
19244993529,4cyclictest33-21ksoftirqd/211:08:092
19244993529,4cyclictest33-21ksoftirqd/210:53:212
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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