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2026-08-24 - 19:27
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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 Mon Aug 24, 2026 12:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491232164,23phc2sys0-21swapper/307:06:443
291372230168,51sleep10-21swapper/107:07:211
291942204169,23sleep20-21swapper/207:08:052
291612201168,22sleep00-21swapper/007:07:390
139391650,1ptp4l401ktimersoftd/308:35:173
242222600,2sleep20-21swapper/209:10:262
26312580,3sleep20-21swapper/209:35:122
139391540,1ptp4l401ktimersoftd/307:59:233
139391530,1ptp4l401ktimersoftd/312:07:053
11372530,3sleep1231rcuc/110:40:141
29642995221,8cyclictest33-21ksoftirqd/210:00:002
139391500,0ptp4l401ktimersoftd/309:43:443
2964299495,7cyclictest32461-21sed10:35:252
29642994831,10cyclictest33-21ksoftirqd/210:20:132
29642994617,9cyclictest33-21ksoftirqd/210:00:192
29642994526,8cyclictest33-21ksoftirqd/207:55:232
1394914433,4phc2sys0-21swapper/307:10:003
139391440,0ptp4l401ktimersoftd/312:16:543
139391440,0ptp4l401ktimersoftd/311:25:143
139391440,0ptp4l401ktimersoftd/307:16:463
139391420,0ptp4l401ktimersoftd/311:20:293
29642994035,3cyclictest33-21ksoftirqd/211:14:592
2964299402,7cyclictest33-21ksoftirqd/212:00:142
2964299402,7cyclictest33-21ksoftirqd/212:00:142
29642994016,9cyclictest33-21ksoftirqd/207:35:012
2964299400,37cyclictest0-21swapper/210:55:232
139391400,0ptp4l401ktimersoftd/310:38:063
29643993935,3cyclictest41-21ksoftirqd/310:20:013
29643993934,3cyclictest41-21ksoftirqd/310:15:003
29643993934,3cyclictest41-21ksoftirqd/310:15:003
29642993919,8cyclictest33-21ksoftirqd/211:40:212
139391390,1ptp4l401ktimersoftd/309:39:473
134491390,7getstats2964399cyclictest07:44:523
57898380,4rtkit-daemon22630-21memory12:30:220
29643993833,3cyclictest41-21ksoftirqd/311:09:593
29643993833,3cyclictest26491-21systemctl09:15:243
29642993831,4cyclictest33-21ksoftirqd/207:36:582
29642993825,3cyclictest33-21ksoftirqd/211:20:192
29642993823,4cyclictest33-21ksoftirqd/210:50:182
29642993822,9cyclictest33-21ksoftirqd/208:40:002
29642993821,7cyclictest33-21ksoftirqd/208:48:182
57898370,4rtkit-daemon24355-21diskstats12:35:160
29643993733,3cyclictest41-21ksoftirqd/311:40:003
29643993732,3cyclictest41-21ksoftirqd/307:50:003
29643993731,4cyclictest41-21ksoftirqd/310:24:483
29643993731,4cyclictest41-21ksoftirqd/309:57:203
29643993731,4cyclictest41-21ksoftirqd/309:34:583
29643993731,3cyclictest41-21ksoftirqd/307:54:593
29643993731,3cyclictest20968-21irqrtprio09:05:173
29643993729,5cyclictest41-21ksoftirqd/311:45:113
29642993734,2cyclictest311rcuc/212:37:262
29642993722,9cyclictest33-21ksoftirqd/208:15:262
29642993718,11cyclictest33-21ksoftirqd/209:30:252
29642993715,8cyclictest33-21ksoftirqd/212:00:002
29641993731,4cyclictest25-21ksoftirqd/112:21:521
29641993731,4cyclictest25-21ksoftirqd/110:46:331
139391370,0ptp4l401ktimersoftd/311:10:283
29643993630,4cyclictest41-21ksoftirqd/308:48:353
29643993630,3cyclictest41-21ksoftirqd/307:30:173
29643993629,4cyclictest41-21ksoftirqd/308:30:473
2964399360,2cyclictest121rcu_preempt09:11:173
29642993632,2cyclictest311rcuc/209:19:372
29642993630,4cyclictest33-21ksoftirqd/212:33:242
29642993629,4cyclictest33-21ksoftirqd/207:18:292
29641993630,4cyclictest25-21ksoftirqd/110:15:471
29641993630,4cyclictest25-21ksoftirqd/110:12:141
29641993630,4cyclictest25-21ksoftirqd/110:12:141
29641993630,4cyclictest25-21ksoftirqd/109:06:031
29641993630,4cyclictest25-21ksoftirqd/108:27:521
29641993630,4cyclictest25-21ksoftirqd/107:54:291
29641993630,4cyclictest25-21ksoftirqd/107:13:261
57898350,5rtkit-daemon1572-1kworker/0:2H07:50:000
57898350,2rtkit-daemon0-21swapper/009:01:560
29643993531,3cyclictest41-21ksoftirqd/309:25:003
29643993530,3cyclictest41-21ksoftirqd/312:00:003
29643993530,3cyclictest41-21ksoftirqd/311:40:193
29643993530,3cyclictest41-21ksoftirqd/310:05:113
29643993530,3cyclictest41-21ksoftirqd/307:37:363
29643993529,4cyclictest41-21ksoftirqd/310:47:553
29642993532,2cyclictest33-21ksoftirqd/211:50:002
29642993532,2cyclictest311rcuc/211:51:262
29642993532,2cyclictest311rcuc/211:17:362
29642993531,3cyclictest311rcuc/207:13:402
29642993529,4cyclictest33-21ksoftirqd/209:05:522
29642993520,7cyclictest33-21ksoftirqd/210:48:042
29642993513,9cyclictest33-21ksoftirqd/209:25:002
29641993530,3cyclictest25-21ksoftirqd/109:30:121
29641993530,3cyclictest25-21ksoftirqd/107:49:461
29641993529,4cyclictest25-21ksoftirqd/112:10:481
29641993529,4cyclictest25-21ksoftirqd/112:06:081
29641993529,4cyclictest25-21ksoftirqd/111:17:211
29641993529,4cyclictest25-21ksoftirqd/110:54:191
29641993529,4cyclictest25-21ksoftirqd/108:59:371
29641993529,4cyclictest25-21ksoftirqd/108:38:391
29641993529,4cyclictest25-21ksoftirqd/108:04:471
29640993528,5cyclictest9-21ksoftirqd/010:31:100
29640993528,4cyclictest9-21ksoftirqd/011:45:110
29640993528,4cyclictest9-21ksoftirqd/008:15:030
139391350,11ptp4l401ktimersoftd/312:12:063
57898340,3rtkit-daemon20363-21netstat12:25:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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