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2026-05-13 - 17:53
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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 rackdslot1.osadl.org (updated Wed May 13, 2026 12:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20391997516,15cyclictest29146-21chrt07:27:073
20391997415,15cyclictest17983-21taskset09:22:423
20391997415,15cyclictest17983-21taskset09:22:413
20391997215,16cyclictest13649-21runrttasks08:05:043
20391997215,14cyclictest2087-21taskset09:56:353
20391997115,17cyclictest32394-21chrt09:54:183
20391997017,18cyclictest32077-21sshd08:44:403
20391997016,15cyclictest20121-21chrt08:17:393
20391997015,9cyclictest23436-21taskset09:35:093
20391997015,17cyclictest27566-21taskset09:41:553
20391997015,11cyclictest20577-21taskset08:20:083
20391997015,11cyclictest20577-21taskset08:20:083
20391996916,16cyclictest25810-21chrt10:46:383
20391996915,14cyclictest16777-21taskset11:39:533
2038899671,26cyclictest3566-21latency10:00:200
231102660,4sleep023114-21df_abs08:25:130
20391996510,11cyclictest29527-21timerandwakeup09:45:263
20391996410,13cyclictest2025-21ntp_states11:05:233
2039199639,10cyclictest10440-21df_abs11:25:133
20391996312,15cyclictest26072-21runrttasks11:58:133
2038899639,18cyclictest17555-21irqrtprio10:30:190
2038899630,22cyclictest26604-21sort12:00:120
2038899621,57cyclictest21583-21wc08:20:220
2038899621,57cyclictest21583-21wc08:20:210
2038899620,27cyclictest9728-21seq12:30:570
2038899620,27cyclictest6334-21seq08:56:020
2038899620,18cyclictest134491ptp4l07:49:280
2038899620,18cyclictest134491ptp4l07:49:280
2038899610,27cyclictest1791-21seq08:47:230
2038899610,26cyclictest23395-21seq11:51:010
2038899610,26cyclictest14278-21seq11:32:170
2038899610,25cyclictest25196-21seq09:36:150
2038899610,23cyclictest21948-21missed_timers09:30:210
134491610,27ptp4l41-21ksoftirqd/310:40:273
2038899602,26cyclictest3652-21taskset07:40:400
2038899602,23cyclictest0-21swapper/010:18:100
2038899601,27cyclictest21142-21seq10:38:410
2038899600,34cyclictest9231-21seq10:13:580
2038899600,27cyclictest8608-21seq09:00:310
2038899600,27cyclictest12034-21taskset11:27:530
2038899600,26cyclictest31931-21seq08:42:500
2038899600,26cyclictest26040-21seq10:49:350
2038899600,26cyclictest17825-21seq08:12:420
2038899600,26cyclictest14050-21seq10:23:530
2038899600,25cyclictest29059-21seq07:26:010
2038899600,22cyclictest29256-21proc_pri09:45:240
107842600,6sleep32039199cyclictest09:05:253
20391995917,10cyclictest1301-21snmpd08:57:083
20391995913,15cyclictest4479-21/usr/sbin/munin12:20:213
2038899591,27cyclictest29458-21taskset08:36:310
2038899591,26cyclictest3012-21seq12:18:250
2038899591,25cyclictest18903-21taskset11:42:270
2038899591,25cyclictest13308-21taskset09:11:510
2038899590,26cyclictest20410-21seq09:29:160
2038899590,25cyclictest20189-21seq08:18:320
2038899590,25cyclictest13125-21seq08:01:230
134491590,3ptp4l0-21swapper/110:24:451
20391995815,9cyclictest24657-21taskset07:18:463
20391995815,9cyclictest24657-21taskset07:18:453
2038899582,22cyclictest0-21swapper/012:28:430
2038899580,26cyclictest24532-21seq07:17:100
2038899580,26cyclictest24532-21seq07:17:090
2038899580,26cyclictest15749-21seq09:18:450
2038899580,25cyclictest2119-21taskset09:57:000
134491580,5ptp4l0-21swapper/209:10:192
134491580,5ptp4l0-21swapper/109:40:111
134491580,4ptp4l0-21swapper/210:10:152
20391995715,10cyclictest24854-21chrt08:29:063
20391995714,10cyclictest26836-21taskset07:21:573
20391995711,10cyclictest17870-21runrttasks08:13:163
20391995710,15cyclictest20789-21ls11:45:243
2038899570,26cyclictest7276-21seq11:16:030
2038899570,26cyclictest30614-21seq12:06:340
2038899570,26cyclictest11126-21taskset09:08:210
2038899570,25cyclictest1414-21taskset07:37:310
134491570,4ptp4l0-21swapper/208:16:032
134491570,3ptp4l0-21swapper/112:20:391
134491570,14ptp4l0-21swapper/107:55:131
20391995618,11cyclictest13365-21taskset09:12:383
20391995616,9cyclictest13239-21chrt08:02:463
20391995616,10cyclictest18761-21chrt10:32:413
20391995615,9cyclictest8970-21chrt10:10:353
20391995613,9cyclictest7659-21ntp_states07:50:243
20391995610,13cyclictest27898-21ls10:50:263
2039199560,19cyclictest0-21swapper/311:00:283
2038899563,19cyclictest0-21swapper/010:07:190
2038899562,32cyclictest17907-21seq09:21:420
2038899562,32cyclictest17907-21seq09:21:410
2038899561,25cyclictest30609-21seq10:58:380
2038899561,16cyclictest134691getstats09:50:170
2038899560,26cyclictest22444-21seq07:14:440
2038899560,25cyclictest5077-21seq11:12:180
2038899560,25cyclictest27735-21runrttasks09:44:090
2038899560,25cyclictest26992-21seq08:32:030
134491560,4ptp4l0-21swapper/007:30:310
134491560,3ptp4l0-21swapper/210:07:352
134491560,3ptp4l0-21swapper/109:45:241
2039199559,16cyclictest30100-21ls10:55:253
20391995518,17cyclictest29561-21taskset08:37:523
20391995517,10cyclictest3034-21taskset12:18:433
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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