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2026-06-07 - 13:58
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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 Jun 07, 2026 12:45:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591234166,24phc2sys0-21swapper/307:09:453
307322231167,22sleep10-21swapper/107:09:061
307282204171,22sleep20-21swapper/207:09:042
304942202168,23sleep00-21swapper/007:06:010
138491660,1ptp4l4372-21diskstats08:25:143
3124999650,27cyclictest15211-21grep10:55:230
3124999640,19cyclictest31799-21df_inode07:10:150
138491610,1ptp4l401ktimersoftd/311:53:113
3124999596,17cyclictest32308-21missed_timers12:35:210
138491590,1ptp4l401ktimersoftd/309:50:173
3124999580,26cyclictest9362-21df_abs09:40:130
138491580,1ptp4l401ktimersoftd/311:15:203
138491570,1ptp4l401ktimersoftd/307:45:203
191812550,3sleep20-21swapper/211:05:152
3124999540,20cyclictest1099-21/usr/sbin/munin11:35:240
31250994819,27cyclictest0-21swapper/109:21:031
18042480,2sleep10-21swapper/108:20:151
99992470,2sleep10-21swapper/107:30:201
3125199470,4cyclictest30300-21ptp4l10:20:232
138491450,0ptp4l401ktimersoftd/309:33:073
138491440,0ptp4l401ktimersoftd/312:20:233
138491430,1ptp4l401ktimersoftd/309:28:353
138491430,0ptp4l401ktimersoftd/310:10:163
138491430,0ptp4l401ktimersoftd/307:27:303
138491420,0ptp4l401ktimersoftd/311:25:183
138491420,0ptp4l401ktimersoftd/307:55:163
138491410,0ptp4l401ktimersoftd/311:35:223
31251994033,4cyclictest33-21ksoftirqd/210:45:012
31250994026,12cyclictest25-21ksoftirqd/110:25:101
31250994018,21cyclictest0-21swapper/110:36:031
31251993933,4cyclictest33-21ksoftirqd/207:19:232
138491390,0ptp4l401ktimersoftd/310:17:203
3125199380,1cyclictest0-21swapper/209:20:232
31253993731,4cyclictest41-21ksoftirqd/311:06:413
31251993731,4cyclictest33-21ksoftirqd/210:36:432
31251993731,4cyclictest33-21ksoftirqd/210:13:252
31251993731,4cyclictest33-21ksoftirqd/208:14:302
31251993730,5cyclictest33-21ksoftirqd/212:24:512
31251993730,4cyclictest33-21ksoftirqd/209:02:162
3125199370,35cyclictest0-21swapper/209:40:332
31250993731,4cyclictest25-21ksoftirqd/110:42:451
31250993730,5cyclictest25-21ksoftirqd/110:55:001
31250993730,4cyclictest25-21ksoftirqd/110:50:001
31250993730,4cyclictest25-21ksoftirqd/110:15:041
31249993732,3cyclictest9-21ksoftirqd/011:25:000
138491370,0ptp4l401ktimersoftd/307:15:113
31253993630,3cyclictest41-21ksoftirqd/310:50:113
31253993629,4cyclictest41-21ksoftirqd/308:42:033
31253993629,4cyclictest41-21ksoftirqd/307:42:383
31253993629,4cyclictest41-21ksoftirqd/307:13:333
31251993632,3cyclictest33-21ksoftirqd/212:07:582
31251993631,3cyclictest33-21ksoftirqd/208:47:202
31251993630,4cyclictest33-21ksoftirqd/212:16:562
31251993630,4cyclictest33-21ksoftirqd/211:38:212
31251993630,4cyclictest33-21ksoftirqd/209:11:302
31251993630,4cyclictest33-21ksoftirqd/207:28:482
31251993630,3cyclictest33-21ksoftirqd/209:17:252
31251993629,4cyclictest33-21ksoftirqd/211:20:122
31251993629,4cyclictest33-21ksoftirqd/210:00:002
31251993629,4cyclictest33-21ksoftirqd/208:44:232
31250993630,4cyclictest25-21ksoftirqd/112:04:081
31250993630,4cyclictest25-21ksoftirqd/108:19:101
31250993629,4cyclictest25-21ksoftirqd/112:27:371
31249993630,4cyclictest9-21ksoftirqd/012:29:060
31253993530,3cyclictest41-21ksoftirqd/311:47:533
31253993530,3cyclictest41-21ksoftirqd/310:03:183
31253993530,3cyclictest41-21ksoftirqd/309:59:493
31253993529,4cyclictest41-21ksoftirqd/311:12:513
31253993529,4cyclictest41-21ksoftirqd/309:38:473
31253993528,4cyclictest41-21ksoftirqd/310:23:323
31251993530,3cyclictest33-21ksoftirqd/212:28:022
31251993530,3cyclictest33-21ksoftirqd/208:37:582
31251993529,4cyclictest33-21ksoftirqd/211:54:542
31251993529,4cyclictest33-21ksoftirqd/211:49:082
31251993529,4cyclictest33-21ksoftirqd/210:34:302
31251993529,4cyclictest33-21ksoftirqd/210:28:572
31251993529,4cyclictest33-21ksoftirqd/207:49:062
31251993528,4cyclictest33-21ksoftirqd/212:34:252
31251993528,4cyclictest33-21ksoftirqd/211:01:422
3125099356,27cyclictest0-21swapper/109:25:331
31250993529,4cyclictest25-21ksoftirqd/111:58:251
31250993529,4cyclictest25-21ksoftirqd/108:44:411
31250993529,4cyclictest25-21ksoftirqd/108:05:111
31250993528,4cyclictest25-21ksoftirqd/111:54:591
31250993528,4cyclictest25-21ksoftirqd/108:28:501
31250993518,16cyclictest1158-21kworker/1:110:31:241
31249993523,10cyclictest9-21ksoftirqd/007:55:000
31249993523,10cyclictest9-21ksoftirqd/007:55:000
31253993428,4cyclictest41-21ksoftirqd/312:26:083
31253993428,4cyclictest41-21ksoftirqd/312:17:503
31253993428,4cyclictest41-21ksoftirqd/310:39:173
31253993428,4cyclictest41-21ksoftirqd/307:53:453
31253993428,4cyclictest41-21ksoftirqd/307:53:453
31253993428,3cyclictest41-21ksoftirqd/309:20:093
31253993428,3cyclictest41-21ksoftirqd/308:18:263
31251993428,4cyclictest33-21ksoftirqd/209:45:042
31251993428,4cyclictest33-21ksoftirqd/208:20:312
31251993428,4cyclictest33-21ksoftirqd/207:55:292
31251993428,4cyclictest33-21ksoftirqd/207:43:212
31251993428,4cyclictest33-21ksoftirqd/207:21:552
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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