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2026-08-14 - 00:41
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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 Aug 13, 2026 12:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591203170,22phc2sys0-21swapper/307:05:573
56972199167,21sleep20-21swapper/207:06:282
507981990,170rtkit-daemon0-21swapper/007:08:460
56962195162,22sleep10-21swapper/107:06:271
1385918363,11phc2sys0-21swapper/307:10:013
296442610,4sleep029647-21timerandwakeup12:15:270
138491580,8ptp4l401ktimersoftd/311:18:523
60822560,2sleep20-21swapper/211:30:132
119892550,3sleep00-21swapper/009:30:190
138491530,8ptp4l401ktimersoftd/309:22:263
138491520,1ptp4l401ktimersoftd/312:26:393
315972480,4sleep031602-21missed_timers12:20:210
6264994741,4cyclictest30383-21awk10:10:011
626399471,43cyclictest13411-21grep08:30:000
138491450,0ptp4l401ktimersoftd/312:31:023
138491430,0ptp4l401ktimersoftd/311:22:243
138491430,0ptp4l401ktimersoftd/309:37:413
626399426,7cyclictest9-21ksoftirqd/010:45:190
138491420,0ptp4l401ktimersoftd/310:53:283
138491420,0ptp4l401ktimersoftd/310:30:143
626699410,2cyclictest121rcu_preempt08:03:203
6263994135,3cyclictest9-21ksoftirqd/009:40:010
138491410,0ptp4l401ktimersoftd/312:08:423
138491410,0ptp4l401ktimersoftd/311:45:103
6265994036,2cyclictest33-21ksoftirqd/209:00:012
50798400,1rtkit-daemon0-21swapper/109:07:001
626699397,3cyclictest41-21ksoftirqd/309:55:223
6266993931,6cyclictest41-21ksoftirqd/307:45:183
6266993931,6cyclictest41-21ksoftirqd/307:45:183
6265993922,15cyclictest33-21ksoftirqd/209:36:022
6264993934,3cyclictest25-21ksoftirqd/111:30:001
6264993934,3cyclictest25-21ksoftirqd/109:25:001
6264993934,3cyclictest25-21ksoftirqd/108:00:011
138491390,0ptp4l401ktimersoftd/310:45:193
6266993833,3cyclictest41-21ksoftirqd/308:39:593
6266993833,3cyclictest41-21ksoftirqd/307:20:003
626699382,3cyclictest41-21ksoftirqd/311:25:263
6265993833,3cyclictest33-21ksoftirqd/212:25:002
6265993831,5cyclictest33-21ksoftirqd/207:51:042
6264993833,3cyclictest25-21ksoftirqd/111:10:001
6264993833,3cyclictest25-21ksoftirqd/110:54:591
6264993833,3cyclictest17864-21cron11:55:001
6264993832,4cyclictest25-21ksoftirqd/111:17:591
6264993832,3cyclictest25-21ksoftirqd/112:20:191
6263993833,3cyclictest9-21ksoftirqd/011:20:010
6263993833,3cyclictest9-21ksoftirqd/008:25:000
626699374,3cyclictest41-21ksoftirqd/310:25:243
6266993732,3cyclictest41-21ksoftirqd/311:05:193
6266993731,4cyclictest41-21ksoftirqd/307:32:233
6266993725,10cyclictest41-21ksoftirqd/309:10:253
6265993731,4cyclictest33-21ksoftirqd/208:23:292
6265993731,4cyclictest33-21ksoftirqd/207:38:292
6264993732,3cyclictest25-21ksoftirqd/111:15:001
6264993732,3cyclictest25-21ksoftirqd/111:00:001
6264993731,4cyclictest25-21ksoftirqd/109:45:201
6264993731,4cyclictest25-21ksoftirqd/108:21:291
6263993732,3cyclictest9-21ksoftirqd/008:00:010
626699366,6cyclictest41-21ksoftirqd/310:55:243
626699364,6cyclictest41-21ksoftirqd/310:20:233
6266993632,2cyclictest41-21ksoftirqd/307:30:003
6266993631,3cyclictest41-21ksoftirqd/308:25:273
6266993631,2cyclictest41-21ksoftirqd/308:10:123
6266993630,4cyclictest41-21ksoftirqd/312:00:583
6266993630,4cyclictest41-21ksoftirqd/309:31:393
6266993630,4cyclictest41-21ksoftirqd/307:55:433
6266993630,3cyclictest41-21ksoftirqd/312:25:013
6266993629,5cyclictest41-21ksoftirqd/307:52:103
6266993623,12cyclictest41-21ksoftirqd/307:45:003
6266993623,11cyclictest41-21ksoftirqd/311:55:003
626699361,3cyclictest41-21ksoftirqd/308:40:203
6265993630,4cyclictest33-21ksoftirqd/209:50:082
6265993630,4cyclictest33-21ksoftirqd/208:01:362
6265993630,3cyclictest33-21ksoftirqd/208:00:012
6264993630,4cyclictest25-21ksoftirqd/111:57:471
6264993630,4cyclictest25-21ksoftirqd/110:03:191
6264993630,3cyclictest25-21ksoftirqd/107:50:271
6263993631,3cyclictest9-21ksoftirqd/011:40:190
6263993631,3cyclictest9-21ksoftirqd/011:25:190
6263993630,4cyclictest9-21ksoftirqd/012:33:570
6263993630,4cyclictest9-21ksoftirqd/007:22:220
6263993630,3cyclictest9-21ksoftirqd/012:15:000
6263993630,3cyclictest9-21ksoftirqd/008:55:170
138491360,0ptp4l401ktimersoftd/309:44:593
626699355,3cyclictest41-21ksoftirqd/311:40:143
6266993531,3cyclictest41-21ksoftirqd/309:05:003
6266993531,2cyclictest41-21ksoftirqd/309:20:003
6266993530,4cyclictest41-21ksoftirqd/311:30:243
6266993530,3cyclictest41-21ksoftirqd/311:55:133
6266993530,3cyclictest41-21ksoftirqd/310:10:163
626699351,8cyclictest41-21ksoftirqd/311:05:003
6265993529,4cyclictest33-21ksoftirqd/211:18:302
6265993529,4cyclictest33-21ksoftirqd/210:35:412
6265993529,4cyclictest33-21ksoftirqd/209:32:482
6265993529,4cyclictest33-21ksoftirqd/209:05:392
6265993529,4cyclictest33-21ksoftirqd/207:33:152
6264993530,3cyclictest25-21ksoftirqd/112:10:131
6264993530,3cyclictest25-21ksoftirqd/111:20:201
6264993530,3cyclictest25-21ksoftirqd/111:00:191
6264993529,4cyclictest25-21ksoftirqd/111:38:331
6264993529,4cyclictest25-21ksoftirqd/109:00:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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