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2026-06-30 - 10:02
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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 Tue Jun 30, 2026 00:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
902221350,4sleep0483299cyclictest20:25:270
2544321340,6sleep2483499cyclictest23:20:242
134491690,29ptp4l25-21ksoftirqd/119:55:121
201862630,5sleep20-21swapper/200:20:172
134491630,4ptp4l0-21swapper/100:20:211
134491610,3ptp4l18413-21ls00:15:173
134491610,3ptp4l18413-21ls00:15:173
134491600,5ptp4l0-21swapper/219:50:032
134491600,4ptp4l0-21swapper/220:55:142
134491590,3ptp4l0-21swapper/320:55:233
134491570,4ptp4l0-21swapper/320:20:183
134491570,3ptp4l0-21swapper/300:13:013
134491570,3ptp4l0-21swapper/120:25:141
4835995610,5cyclictest41-21ksoftirqd/320:10:273
134491560,3ptp4l0-21swapper/020:05:350
134491550,7ptp4l4363-21taskset19:07:412
134491550,4ptp4l8118-21irqrtprio21:35:180
134491550,4ptp4l0-21swapper/323:01:123
134491550,13ptp4l0-21swapper/119:30:291
134491540,5ptp4l0-21swapper/221:05:162
4835995314,9cyclictest41-21ksoftirqd/320:42:593
134491530,4ptp4l0-21swapper/321:25:043
134491530,4ptp4l0-21swapper/123:16:281
134491530,3ptp4l0-21swapper/323:32:303
134491530,3ptp4l0-21swapper/121:04:391
134491530,3ptp4l0-21swapper/121:04:391
134491530,3ptp4l0-21swapper/020:30:160
134491520,4ptp4l0-21swapper/123:41:451
134491520,4ptp4l0-21swapper/023:31:110
134491520,3ptp4l0-21swapper/122:41:421
134491520,11ptp4l4064-21ls19:05:261
4835995119,4cyclictest41-21ksoftirqd/322:01:193
134491510,4ptp4l0-21swapper/123:11:221
134491510,4ptp4l0-21swapper/121:46:161
134491500,4ptp4l0-21swapper/322:27:333
134491500,4ptp4l0-21swapper/122:22:181
134491500,4ptp4l0-21swapper/122:22:181
134491500,4ptp4l0-21swapper/119:44:561
134491500,4ptp4l0-21swapper/119:44:561
134491500,4ptp4l0-21swapper/000:12:400
134491500,3ptp4l0-21swapper/221:25:002
134491500,3ptp4l0-21swapper/219:42:262
134491500,3ptp4l0-21swapper/219:42:262
134491500,3ptp4l0-21swapper/121:40:041
134491500,3ptp4l0-21swapper/120:30:401
134491500,3ptp4l0-21swapper/100:16:301
134491500,3ptp4l0-21swapper/100:16:301
134491490,4ptp4l0-21swapper/223:17:452
134491490,4ptp4l0-21swapper/222:16:032
134491490,4ptp4l0-21swapper/222:05:512
134491490,4ptp4l0-21swapper/220:49:342
134491490,4ptp4l0-21swapper/122:58:451
134491490,4ptp4l0-21swapper/100:32:361
134491490,4ptp4l0-21swapper/021:32:540
134491490,3ptp4l1301-21snmpd23:10:063
134491480,4ptp4l0-21swapper/323:08:543
134491480,4ptp4l0-21swapper/119:17:131
134491480,3ptp4l0-21swapper/219:22:122
134491480,3ptp4l0-21swapper/122:31:231
134491480,3ptp4l0-21swapper/122:03:151
483599473,3cyclictest0-21swapper/320:46:443
134491470,4ptp4l0-21swapper/223:55:252
134491470,4ptp4l0-21swapper/223:12:402
134491470,4ptp4l0-21swapper/120:10:581
134491470,4ptp4l0-21swapper/119:27:231
134491470,3ptp4l0-21swapper/322:30:133
134491470,3ptp4l0-21swapper/300:35:173
134491470,3ptp4l0-21swapper/121:55:181
4835994614,4cyclictest41-21ksoftirqd/319:31:383
483599461,1cyclictest0-21swapper/321:37:383
134491460,6ptp4l0-21swapper/319:08:293
134491460,4ptp4l0-21swapper/321:09:593
134491460,4ptp4l0-21swapper/100:08:501
134491460,4ptp4l0-21swapper/020:01:100
134491460,3ptp4l0-21swapper/322:36:413
134491460,3ptp4l0-21swapper/123:20:461
134491460,3ptp4l0-21swapper/022:20:590
134491460,3ptp4l0-21swapper/022:20:590
134491450,3ptp4l0-21swapper/321:56:393
134491450,3ptp4l0-21swapper/023:20:180
483499442,7cyclictest0-21swapper/221:00:262
483499442,7cyclictest0-21swapper/221:00:262
134491440,4ptp4l24083-21apt-get22:10:123
134491440,4ptp4l0-21swapper/122:48:171
134491440,2ptp4l0-21swapper/000:00:450
134491440,11ptp4l0-21swapper/323:22:533
4835994337,3cyclictest41-21ksoftirqd/323:59:593
4835994337,3cyclictest41-21ksoftirqd/320:00:003
4835994313,3cyclictest41-21ksoftirqd/320:33:353
4835994312,3cyclictest41-21ksoftirqd/300:06:333
4835994310,4cyclictest41-21ksoftirqd/323:51:173
4832994339,2cyclictest28763-21latency_hist00:40:000
134491430,9ptp4l0-21swapper/019:54:400
134491430,5ptp4l33-21ksoftirqd/221:40:192
134491430,5ptp4l19157-21vmstat00:15:272
134491430,5ptp4l19157-21vmstat00:15:272
134491430,5ptp4l0-21swapper/019:20:210
134491430,4ptp4l25-21ksoftirqd/123:25:201
134491430,4ptp4l1038-21apt-get23:40:112
134491430,4ptp4l0-21swapper/321:20:053
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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