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2026-08-29 - 20:45
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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 Sat Aug 29, 2026 12:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
537321440,5sleep35377-21cpuspeed10:20:143
14196996913,11cyclictest1317-21runrttasks11:36:300
14196996911,11cyclictest4759-21unixbench_multi11:25:270
14196996910,11cyclictest15447-21ntpq09:30:210
14196996815,10cyclictest14212-21taskset07:10:090
14196996811,16cyclictest31910-21cat08:55:260
251182670,5sleep21419899cyclictest08:40:292
14196996714,9cyclictest15746-21awk11:50:210
14196996615,10cyclictest1317-21runrttasks10:52:120
14196996610,22cyclictest28459-21df10:00:150
14196996610,11cyclictest19833-21missed_timers07:20:220
14196996514,10cyclictest1317-21runrttasks11:21:290
14196996513,11cyclictest1301-21snmpd08:31:040
14196996511,10cyclictest620-21df_abs09:00:160
14196996410,11cyclictest23854-21sed09:50:150
1419699639,11cyclictest14275-21latency_hist10:40:000
14196996317,11cyclictest6840-21taskset09:10:350
14196996315,11cyclictest27867-21taskset11:07:190
14196996315,10cyclictest32543-21taskset10:07:330
14196996312,16cyclictest23678-21df_abs07:30:130
14196996312,10cyclictest17664-21irqrtprio11:55:190
14196996311,9cyclictest0-21swapper/009:40:240
14196996311,11cyclictest21951-21cut07:25:190
1419699629,14cyclictest5786-21fschecks_count11:30:160
1419699629,11cyclictest11007-21date11:40:190
1419699628,10cyclictest6339-21switchtime08:00:270
14196996218,10cyclictest2476-21taskset12:31:040
14196996215,11cyclictest22806-21taskset08:35:350
14196996215,10cyclictest27573-21taskset09:55:420
14196996213,45cyclictest3305-21hwlatdetect09:05:180
14196996211,11cyclictest29190-21kernelversion11:10:200
14196996211,10cyclictest8905-21cat09:15:280
1419699619,12cyclictest20218-21date12:00:180
14196996116,11cyclictest4676-21taskset07:59:540
14196996113,9cyclictest7359-21grep08:05:140
14196996113,11cyclictest4757-21seq10:16:220
14196996112,11cyclictest13342-21expr09:25:240
14196996111,8cyclictest2316-21latency_hist07:55:010
14196996111,11cyclictest23936-21ls12:10:120
14196996110,11cyclictest14981-21cut08:20:190
14196996110,11cyclictest14981-21cut08:20:190
14197996010,10cyclictest25-21ksoftirqd/107:40:011
14196996019,38cyclictest10338-21hddtemp_smartct10:30:160
14196996018,17cyclictest32238-21taskset07:48:090
14196996018,10cyclictest11669-21seq09:23:140
14196996017,16cyclictest5132-21seq12:40:000
14196996017,11cyclictest25434-21runrttasks08:41:510
14196996013,10cyclictest1317-21runrttasks09:46:570
134491600,4ptp4l0-21swapper/111:41:031
1419699599,15cyclictest10442-21cut08:10:190
1419699598,16cyclictest448-21dbus-daemon08:45:260
14196995919,37cyclictest14043-21users11:45:290
14196995918,15cyclictest9390-21seq10:26:370
14196995914,11cyclictest1317-21runrttasks12:08:030
14196995913,8cyclictest18173-21awk08:25:300
14196995817,11cyclictest30038-21taskset07:44:240
14196995817,10cyclictest30353-21seq12:22:390
14196995810,18cyclictest22980-21sed10:55:270
134491580,5ptp4l0-21swapper/112:20:221
14196995720,34cyclictest29351-21ntp_states08:50:250
14196995718,15cyclictest25778-21taskset11:04:590
14196995715,11cyclictest32521-21runrttasks12:26:000
134491570,4ptp4l321ktimersoftd/207:20:302
134491570,3ptp4l0-21swapper/212:35:152
134491570,17ptp4l0-21swapper/309:35:213
14196995618,16cyclictest18761-21seq10:48:390
134491560,4ptp4l0-21swapper/108:51:191
134491560,12ptp4l0-21swapper/208:55:292
14196995511,15cyclictest12792-21sed08:15:190
134491550,3ptp4l0-21swapper/308:10:163
134491550,3ptp4l0-21swapper/207:14:552
1419699546,18cyclictest0-21swapper/007:15:130
14196995414,10cyclictest18521-21seq09:37:420
134491540,4ptp4l0-21swapper/311:20:213
134491530,7ptp4l13533-21users07:05:281
134491530,4ptp4l0-21swapper/310:04:363
134491530,4ptp4l0-21swapper/309:45:023
134491530,4ptp4l0-21swapper/309:23:383
134491530,4ptp4l0-21swapper/110:49:431
134491530,3ptp4l0-21swapper/311:59:003
14196995215,11cyclictest7233-21runrttasks10:23:240
134491520,5ptp4l5143-21apt-get09:10:112
134491520,4ptp4l0-21swapper/112:05:441
134491520,3ptp4l0-21swapper/111:03:291
134491520,11ptp4l0-21swapper/307:21:523
134491520,11ptp4l0-21swapper/112:15:351
14197995118,8cyclictest25-21ksoftirqd/107:30:001
14196995116,11cyclictest32759-21taskset11:18:270
14196995111,7cyclictest15610-21ntpq10:40:220
134491510,4ptp4l0-21swapper/312:18:103
134491510,4ptp4l0-21swapper/111:25:471
134491510,4ptp4l0-21swapper/107:31:551
14196995017,6cyclictest2386-21runrttasks10:11:120
134491500,6ptp4l0-21swapper/007:05:180
134491500,3ptp4l0-21swapper/311:11:593
134491500,3ptp4l0-21swapper/111:17:151
134491490,10ptp4l0-21swapper/107:45:261
14197994815,4cyclictest25-21ksoftirqd/107:20:211
14197994811,7cyclictest25-21ksoftirqd/108:45:221
134491480,3ptp4l0-21swapper/110:14:451
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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