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2026-07-25 - 11:13
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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 Sat Jul 25, 2026 00:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591203169,23phc2sys0-21swapper/319:06:113
26732202168,22sleep20-21swapper/219:06:122
27992200168,21sleep10-21swapper/119:07:431
27662198164,23sleep00-21swapper/019:07:180
1385918363,10phc2sys0-21swapper/319:10:013
138491650,1ptp4l401ktimersoftd/322:49:233
138491650,1ptp4l401ktimersoftd/320:29:313
3268996222,7cyclictest25-21ksoftirqd/122:35:151
3268996123,7cyclictest25-21ksoftirqd/100:35:241
3268996030,4cyclictest25-21ksoftirqd/122:40:191
3268996021,7cyclictest25-21ksoftirqd/119:25:171
3268995623,10cyclictest25-21ksoftirqd/123:10:261
138491560,1ptp4l401ktimersoftd/320:06:313
138491540,1ptp4l401ktimersoftd/323:45:553
17192530,3sleep20-21swapper/221:15:202
17192530,3sleep20-21swapper/221:15:202
138491530,1ptp4l401ktimersoftd/320:42:253
3268995221,4cyclictest25-21ksoftirqd/121:35:171
138491520,1ptp4l401ktimersoftd/321:48:093
3268995019,7cyclictest25-21ksoftirqd/123:35:201
326999481,2cyclictest0-21swapper/222:25:242
3268994817,4cyclictest25-21ksoftirqd/122:25:001
326899476,6cyclictest25-21ksoftirqd/122:25:241
326899476,5cyclictest25-21ksoftirqd/120:50:231
3268994713,6cyclictest25-21ksoftirqd/119:14:121
326899470,6cyclictest25-21ksoftirqd/120:05:251
326899461,5cyclictest25-21ksoftirqd/121:55:161
3268994538,4cyclictest27911-21cron20:00:001
3268994527,10cyclictest25-21ksoftirqd/121:45:121
326899450,6cyclictest25-21ksoftirqd/123:55:141
3267994538,4cyclictest25083-21cron00:15:000
3270994428,3cyclictest41-21ksoftirqd/300:25:123
326899441,6cyclictest25-21ksoftirqd/120:20:271
3268994330,3cyclictest25-21ksoftirqd/123:00:131
138491430,0ptp4l401ktimersoftd/320:19:563
3268994217,10cyclictest25-21ksoftirqd/100:15:181
138491420,0ptp4l401ktimersoftd/322:31:133
138491420,0ptp4l401ktimersoftd/300:24:593
326899414,7cyclictest25-21ksoftirqd/122:45:151
326899413,35cyclictest18537-21fschecks_count22:55:161
326899412,5cyclictest25-21ksoftirqd/119:35:201
138491410,0ptp4l401ktimersoftd/323:33:313
138491410,0ptp4l401ktimersoftd/319:40:173
326999407,32cyclictest0-21swapper/222:20:242
326899402,5cyclictest25-21ksoftirqd/121:50:191
3268994021,10cyclictest25-21ksoftirqd/120:10:101
138491400,0ptp4l401ktimersoftd/323:50:173
138491400,0ptp4l401ktimersoftd/323:25:283
3269993928,4cyclictest33-21ksoftirqd/220:29:352
326899395,7cyclictest25-21ksoftirqd/120:29:251
326899392,7cyclictest25-21ksoftirqd/100:10:011
3268993923,5cyclictest25-21ksoftirqd/119:50:171
3268993919,8cyclictest25-21ksoftirqd/122:10:011
3267993932,4cyclictest9-21ksoftirqd/000:15:110
3270993832,4cyclictest41-21ksoftirqd/319:54:503
3270993831,4cyclictest41-21ksoftirqd/323:44:593
3270993731,4cyclictest41-21ksoftirqd/323:02:283
3269993731,4cyclictest33-21ksoftirqd/222:00:332
3269993731,4cyclictest33-21ksoftirqd/221:55:332
3269993731,4cyclictest33-21ksoftirqd/221:33:422
3269993731,4cyclictest33-21ksoftirqd/221:24:072
3269993730,4cyclictest33-21ksoftirqd/219:37:252
3269993718,17cyclictest33-21ksoftirqd/220:43:092
326899373,5cyclictest25-21ksoftirqd/123:25:251
3268993732,3cyclictest25-21ksoftirqd/122:05:001
3268993722,7cyclictest25-21ksoftirqd/119:15:201
326899370,6cyclictest21948-21strings19:45:221
3267993731,4cyclictest9-21ksoftirqd/021:03:560
3267993731,4cyclictest9-21ksoftirqd/020:31:550
3267993730,4cyclictest9-21ksoftirqd/022:58:160
138491370,32ptp4l35792irq/125-enp1s0-21:39:073
138491370,0ptp4l401ktimersoftd/319:55:163
3270993630,4cyclictest41-21ksoftirqd/322:55:433
3270993630,4cyclictest41-21ksoftirqd/322:41:553
3270993630,4cyclictest41-21ksoftirqd/322:12:353
3270993630,4cyclictest41-21ksoftirqd/321:30:343
3269993631,3cyclictest33-21ksoftirqd/223:47:372
3269993631,3cyclictest33-21ksoftirqd/221:45:102
3269993631,3cyclictest33-21ksoftirqd/200:24:282
3269993630,4cyclictest33-21ksoftirqd/221:36:222
3269993630,4cyclictest33-21ksoftirqd/221:02:052
3269993630,4cyclictest33-21ksoftirqd/220:32:332
3269993630,4cyclictest33-21ksoftirqd/200:31:052
326899364,6cyclictest25-21ksoftirqd/121:20:111
3268993629,4cyclictest25-21ksoftirqd/121:05:001
3268993622,4cyclictest25-21ksoftirqd/123:54:281
3267993630,4cyclictest9-21ksoftirqd/023:41:250
3267993630,4cyclictest9-21ksoftirqd/021:08:210
3267993630,4cyclictest9-21ksoftirqd/020:39:130
3267993630,4cyclictest9-21ksoftirqd/019:49:370
3267993629,5cyclictest9-21ksoftirqd/021:47:360
3267993629,4cyclictest9-21ksoftirqd/023:16:580
3270993530,3cyclictest41-21ksoftirqd/320:05:003
3270993530,3cyclictest41-21ksoftirqd/319:46:003
3270993529,4cyclictest41-21ksoftirqd/323:20:503
3270993529,4cyclictest41-21ksoftirqd/320:56:043
3270993529,4cyclictest41-21ksoftirqd/320:45:293
3270993528,4cyclictest41-21ksoftirqd/321:41:303
327099352,31cyclictest28833-21kworker/3:022:27:133
3269993529,4cyclictest33-21ksoftirqd/223:52:542
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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