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2026-08-10 - 19:38
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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 Mon Aug 10, 2026 12:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2494221430,5sleep13260199cyclictest09:10:271
32601996421,4cyclictest25-21ksoftirqd/112:38:011
32601996220,7cyclictest25-21ksoftirqd/108:24:021
134491620,4ptp4l0-21swapper/007:20:250
134491610,5ptp4l0-21swapper/109:20:281
134491610,5ptp4l0-21swapper/010:35:060
134491610,4ptp4l12642-21irqstats07:35:201
32601996023,5cyclictest25-21ksoftirqd/112:10:331
32601995913,4cyclictest25-21ksoftirqd/110:56:141
134491590,4ptp4l0-21swapper/011:25:100
32601995818,4cyclictest25-21ksoftirqd/109:48:551
134491580,4ptp4l0-21swapper/109:35:271
32601995720,7cyclictest25-21ksoftirqd/107:42:581
134491570,4ptp4l10651-21irqstats09:50:202
134491570,4ptp4l0-21swapper/209:10:162
134491570,4ptp4l0-21swapper/110:43:401
134491570,3ptp4l0-21swapper/210:47:012
134491570,3ptp4l0-21swapper/010:05:230
134491570,3ptp4l0-21swapper/008:30:120
32600995625,3cyclictest9-21ksoftirqd/012:10:160
134491560,3ptp4l868-21iostat09:30:190
134491560,2ptp4l0-21swapper/009:40:200
32601995531,5cyclictest25-21ksoftirqd/111:05:191
3260099556,3cyclictest14477-21dump-pmu-power12:20:000
134491550,4ptp4l0-21swapper/309:55:473
134491550,4ptp4l0-21swapper/107:07:141
134491550,2ptp4l21243-21sshd11:24:363
32601995433,3cyclictest25-21ksoftirqd/110:50:151
32600995426,4cyclictest9-21ksoftirqd/007:45:170
32600995421,4cyclictest9-21ksoftirqd/012:30:000
134491540,9ptp4l0-21swapper/211:15:152
134491540,4ptp4l0-21swapper/111:33:491
32601995323,5cyclictest25-21ksoftirqd/108:19:131
32600995315,4cyclictest8772-21kworker/0:208:44:440
32600995315,4cyclictest8772-21kworker/0:208:44:440
134491530,4ptp4l0-21swapper/307:30:153
134491530,4ptp4l0-21swapper/307:30:153
134491530,4ptp4l0-21swapper/111:16:261
134491530,25ptp4l41-21ksoftirqd/311:33:503
121372530,5sleep30-21swapper/308:45:133
32601995214,7cyclictest25-21ksoftirqd/111:35:281
32600995218,4cyclictest16610-21kworker/0:212:02:380
134491520,4ptp4l0-21swapper/210:50:292
134491520,3ptp4l0-21swapper/212:30:202
134491520,3ptp4l0-21swapper/008:47:560
32601995121,10cyclictest25-21ksoftirqd/109:05:181
134491510,4ptp4l0-21swapper/111:43:111
134491510,4ptp4l0-21swapper/111:23:111
134491510,4ptp4l0-21swapper/108:09:441
134491510,4ptp4l0-21swapper/012:23:480
134491510,4ptp4l0-21swapper/011:56:300
134491510,4ptp4l0-21swapper/011:56:300
134491510,4ptp4l0-21swapper/010:48:210
134491510,2ptp4l0-21swapper/107:58:571
134491510,10ptp4l0-21swapper/010:24:350
64362500,5sleep20-21swapper/212:00:262
32600995010,9cyclictest9-21ksoftirqd/009:45:140
134491500,4ptp4l0-21swapper/312:08:163
134491500,4ptp4l0-21swapper/211:11:112
134491500,4ptp4l0-21swapper/012:05:410
134491500,4ptp4l0-21swapper/010:55:570
134491500,4ptp4l0-21swapper/008:13:590
134491500,3ptp4l0-21swapper/212:35:372
134491500,3ptp4l0-21swapper/211:20:242
134491500,3ptp4l0-21swapper/112:29:001
134491500,3ptp4l0-21swapper/108:26:291
32601994916,6cyclictest25-21ksoftirqd/111:55:001
32601994916,11cyclictest25-21ksoftirqd/109:30:191
3260099494,7cyclictest9-21ksoftirqd/008:50:200
32600994923,3cyclictest9-21ksoftirqd/012:35:160
32600994919,4cyclictest9-21ksoftirqd/010:50:290
134491490,4ptp4l0-21swapper/111:49:091
134491490,4ptp4l0-21swapper/109:04:291
134491490,4ptp4l0-21swapper/009:17:170
134491490,3ptp4l3260399cyclictest10:07:043
134491490,3ptp4l2432-21chrt11:51:050
134491490,3ptp4l0-21swapper/107:45:151
3260199485,4cyclictest25-21ksoftirqd/107:15:001
3260099484,5cyclictest121rcu_preempt10:19:590
32600994818,3cyclictest9-21ksoftirqd/007:40:260
134491480,9ptp4l32730-21apt-get09:30:132
134491480,4ptp4l0-21swapper/311:13:473
134491480,4ptp4l0-21swapper/310:00:043
134491480,4ptp4l0-21swapper/110:37:581
134491480,4ptp4l0-21swapper/007:33:050
134491480,4ptp4l0-21swapper/007:33:050
134491480,3ptp4l0-21swapper/212:22:402
134491480,3ptp4l0-21swapper/211:05:382
134491480,3ptp4l0-21swapper/208:20:242
134491480,3ptp4l0-21swapper/208:10:052
134491480,3ptp4l0-21swapper/109:25:061
134491480,2ptp4l121rcu_preempt09:00:203
32603994733,11cyclictest41-21ksoftirqd/308:30:123
32601994715,6cyclictest25-21ksoftirqd/111:25:141
32601994714,2cyclictest121rcu_preempt10:45:211
3260099471,8cyclictest9-21ksoftirqd/008:25:180
32600994714,3cyclictest9-21ksoftirqd/007:50:250
134491470,4ptp4l0-21swapper/307:59:133
134491470,4ptp4l0-21swapper/109:53:131
134491470,4ptp4l0-21swapper/009:57:060
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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