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2026-05-03 - 14:08
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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 Sun May 03, 2026 00:45:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
258742219158,49sleep20-21swapper/219:08:442
138591206173,22phc2sys0-21swapper/319:08:273
258532205171,23sleep10-21swapper/119:08:271
237572201168,22sleep00-21swapper/019:05:080
2626699717,25cyclictest25171-21needreboot20:10:203
256102710,2sleep00-21swapper/000:30:270
138491640,1ptp4l13019-21unixbench_multi21:55:263
26266996110,28cyclictest16375-21sed19:55:003
26265995719,5cyclictest33-21ksoftirqd/219:10:242
26265995522,5cyclictest33-21ksoftirqd/219:25:142
26265995421,8cyclictest33-21ksoftirqd/221:00:242
26265995421,8cyclictest33-21ksoftirqd/221:00:242
2626599525,6cyclictest33-21ksoftirqd/223:50:252
2626599525,6cyclictest33-21ksoftirqd/222:45:192
2626599515,8cyclictest33-21ksoftirqd/200:25:142
2626599515,6cyclictest33-21ksoftirqd/223:45:142
26265995119,5cyclictest33-21ksoftirqd/219:50:222
26265995119,5cyclictest33-21ksoftirqd/200:05:282
2626599506,8cyclictest33-21ksoftirqd/221:05:202
2626599505,7cyclictest33-21ksoftirqd/221:45:152
2626599505,5cyclictest33-21ksoftirqd/200:15:132
2626599503,7cyclictest0-21swapper/222:55:242
26265995019,6cyclictest33-21ksoftirqd/223:00:152
26265995019,6cyclictest33-21ksoftirqd/223:00:152
2626599500,47cyclictest27767-21processes23:30:242
2626599500,47cyclictest27767-21processes23:30:242
2626599496,6cyclictest33-21ksoftirqd/223:22:502
2626599495,9cyclictest33-21ksoftirqd/219:40:252
2626599495,7cyclictest33-21ksoftirqd/221:35:172
2626599495,6cyclictest33-21ksoftirqd/219:35:202
2626599494,6cyclictest33-21ksoftirqd/222:35:232
2626599494,4cyclictest33-21ksoftirqd/220:15:152
26265994919,5cyclictest33-21ksoftirqd/220:20:132
26263994916,3cyclictest9-21ksoftirqd/020:20:010
2626599486,8cyclictest33-21ksoftirqd/219:47:142
2626599486,6cyclictest33-21ksoftirqd/222:35:002
2626599485,7cyclictest33-21ksoftirqd/221:20:182
2626599485,6cyclictest33-21ksoftirqd/220:25:142
26265994817,5cyclictest33-21ksoftirqd/223:35:252
2626599480,5cyclictest33-21ksoftirqd/220:42:232
26263994814,4cyclictest9-21ksoftirqd/020:25:000
2626599476,9cyclictest33-21ksoftirqd/221:50:282
2626599476,7cyclictest33-21ksoftirqd/222:05:252
2626599476,5cyclictest33-21ksoftirqd/223:05:212
2626599475,8cyclictest33-21ksoftirqd/200:30:252
2626599475,7cyclictest33-21ksoftirqd/220:30:202
2626599474,5cyclictest33-21ksoftirqd/219:55:252
2626599472,8cyclictest0-21swapper/222:15:232
26263994718,7cyclictest9-21ksoftirqd/021:55:230
26263994717,7cyclictest9-21ksoftirqd/019:25:000
1385914721,3phc2sys41-21ksoftirqd/320:24:243
2626599466,9cyclictest33-21ksoftirqd/220:10:252
2626599465,9cyclictest33-21ksoftirqd/223:25:122
2626599464,7cyclictest33-21ksoftirqd/222:40:182
2626599464,7cyclictest33-21ksoftirqd/220:05:002
26265994618,8cyclictest33-21ksoftirqd/222:10:282
2626399467,3cyclictest9-21ksoftirqd/020:50:180
2626699455,23cyclictest223-21systemd-journal19:16:043
2626599455,5cyclictest33-21ksoftirqd/221:55:132
2626599455,5cyclictest33-21ksoftirqd/220:45:192
2626599454,8cyclictest33-21ksoftirqd/219:20:272
2626599454,7cyclictest33-21ksoftirqd/220:35:192
2626599454,5cyclictest33-21ksoftirqd/221:25:132
2626599453,8cyclictest33-21ksoftirqd/221:15:172
2626399457,3cyclictest9-21ksoftirqd/021:30:190
2626599445,9cyclictest33-21ksoftirqd/223:40:112
2626599445,7cyclictest33-21ksoftirqd/219:15:152
2626599444,6cyclictest33-21ksoftirqd/221:30:242
2626599443,5cyclictest33-21ksoftirqd/200:35:162
26265994415,6cyclictest33-21ksoftirqd/222:25:192
2626399448,7cyclictest9-21ksoftirqd/021:22:170
2626399448,4cyclictest9-21ksoftirqd/020:10:230
26263994440,2cyclictest9-21ksoftirqd/022:15:010
26263994415,7cyclictest9-21ksoftirqd/019:35:270
138491440,0ptp4l401ktimersoftd/322:52:053
138491440,0ptp4l401ktimersoftd/321:45:293
138491440,0ptp4l401ktimersoftd/320:54:063
2626699431,26cyclictest223-21systemd-journal21:54:053
2626599435,7cyclictest33-21ksoftirqd/223:15:132
2626599435,6cyclictest33-21ksoftirqd/223:55:262
2626599435,5cyclictest33-21ksoftirqd/200:10:252
2626599433,8cyclictest33-21ksoftirqd/222:00:212
2626599433,8cyclictest33-21ksoftirqd/219:30:262
2626599433,5cyclictest33-21ksoftirqd/220:55:122
2626599433,5cyclictest33-21ksoftirqd/200:20:152
2626399435,2cyclictest121rcu_preempt22:15:200
138491430,0ptp4l401ktimersoftd/320:35:103
138491430,0ptp4l401ktimersoftd/320:02:173
2626699426,27cyclictest223-21systemd-journal21:25:053
2626599425,7cyclictest33-21ksoftirqd/222:50:182
2626599423,9cyclictest33-21ksoftirqd/220:05:262
2626399426,6cyclictest9-21ksoftirqd/019:30:140
2626399426,3cyclictest9-21ksoftirqd/023:15:140
2626399421,3cyclictest121rcu_preempt20:40:010
138491420,0ptp4l401ktimersoftd/321:34:443
2626599413,6cyclictest33-21ksoftirqd/222:20:142
2626599412,6cyclictest33-21ksoftirqd/200:00:152
2626599412,5cyclictest33-21ksoftirqd/221:44:182
2626399417,3cyclictest9-21ksoftirqd/023:45:160
2626399415,3cyclictest9-21ksoftirqd/022:25:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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