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2026-08-10 - 05:40
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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 00:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1413221450,6sleep2900299cyclictest22:47:332
900299822,78cyclictest0-21swapper/220:35:292
900299812,77cyclictest0-21swapper/223:50:292
900299781,2cyclictest0-21swapper/219:45:492
900299691,4cyclictest855-21meminfo20:00:292
112072680,3sleep341-21ksoftirqd/320:20:273
134491620,4ptp4l0-21swapper/020:50:190
89042610,5sleep10-21swapper/119:10:021
900299602,56cyclictest0-21swapper/221:55:292
134491600,4ptp4l20857-21users23:00:280
134491600,4ptp4l0-21swapper/122:20:171
134491590,4ptp4l27810-21users23:15:281
134491580,4ptp4l0-21swapper/119:23:451
134491580,3ptp4l0-21swapper/120:12:501
134491580,3ptp4l0-21swapper/120:12:501
134491580,3ptp4l0-21swapper/022:56:190
134491580,3ptp4l0-21swapper/022:56:180
134491570,4ptp4l0-21swapper/100:31:191
134491570,3ptp4l0-21swapper/300:00:133
161322560,7sleep1241ktimersoftd/119:25:131
161322560,7sleep1241ktimersoftd/119:25:131
134491560,4ptp4l0-21swapper/021:00:250
134491560,3ptp4l0-21swapper/120:50:241
900299551,52cyclictest0-21swapper/221:05:292
265102550,5sleep30-21swapper/300:20:263
134491550,4ptp4l0-21swapper/100:17:001
134491540,3ptp4l0-21swapper/121:11:591
134491540,3ptp4l0-21swapper/020:35:290
134491530,4ptp4l0-21swapper/319:45:163
134491530,4ptp4l0-21swapper/300:25:223
134491530,4ptp4l0-21swapper/122:14:221
134491530,4ptp4l0-21swapper/121:29:211
134491530,4ptp4l0-21swapper/019:15:240
134491530,3ptp4l0-21swapper/219:53:142
134491530,3ptp4l0-21swapper/120:33:431
9001995121,3cyclictest25-21ksoftirqd/121:55:201
134491510,4ptp4l0-21swapper/319:42:583
134491510,4ptp4l0-21swapper/319:31:583
134491510,4ptp4l0-21swapper/219:39:042
134491510,4ptp4l0-21swapper/021:44:590
134491510,4ptp4l0-21swapper/020:15:320
134491510,4ptp4l0-21swapper/019:50:330
134491510,4ptp4l0-21swapper/000:33:020
134491510,3ptp4l30785-21df22:15:130
9001995021,4cyclictest25-21ksoftirqd/122:10:001
134491500,5ptp4l0-21swapper/019:05:170
134491500,4ptp4l0-21swapper/120:57:501
134491500,3ptp4l0-21swapper/020:20:200
9001994920,8cyclictest25-21ksoftirqd/120:35:281
9001994917,4cyclictest25-21ksoftirqd/123:20:211
9001994916,9cyclictest25-21ksoftirqd/122:30:261
134491490,4ptp4l0-21swapper/119:55:321
134491490,4ptp4l0-21swapper/022:51:540
134491490,4ptp4l0-21swapper/019:44:150
9002994817,28cyclictest2704-21ls23:30:292
900299481,45cyclictest0-21swapper/200:00:392
134491480,4ptp4l0-21swapper/119:54:201
134491480,4ptp4l0-21swapper/100:27:311
134491480,3ptp4l3965-21netstat21:15:242
134491480,3ptp4l3965-21netstat21:15:232
134491480,3ptp4l0-21swapper/221:01:372
134491480,3ptp4l0-21swapper/123:10:041
134491480,3ptp4l0-21swapper/122:42:431
134491480,3ptp4l0-21swapper/122:00:401
900399471,5cyclictest121rcu_preempt21:12:073
9002994714,31cyclictest24496-21kworker/2:023:15:282
9001994728,8cyclictest25-21ksoftirqd/122:27:101
9001994719,9cyclictest25-21ksoftirqd/123:27:461
9001994719,9cyclictest25-21ksoftirqd/123:27:461
9001994717,7cyclictest25-21ksoftirqd/123:07:531
134491470,4ptp4l0-21swapper/020:27:220
134491470,4ptp4l0-21swapper/020:00:570
134491470,3ptp4l0-21swapper/321:35:483
134491470,3ptp4l0-21swapper/023:42:070
134491470,3ptp4l0-21swapper/019:48:000
900399460,3cyclictest121rcu_preempt21:57:593
900299463,42cyclictest0-21swapper/219:21:592
900199463,7cyclictest25-21ksoftirqd/123:53:351
9001994617,4cyclictest25-21ksoftirqd/119:18:461
9001994617,4cyclictest25-21ksoftirqd/100:00:011
9001994614,8cyclictest25-21ksoftirqd/119:35:191
134491460,6ptp4l0-21swapper/319:09:133
134491460,4ptp4l15947-21apt-get19:25:122
134491460,4ptp4l15947-21apt-get19:25:122
134491460,4ptp4l0-21swapper/020:08:510
134491460,3ptp4l0-21swapper/123:36:251
134491460,3ptp4l0-21swapper/122:46:391
134491460,3ptp4l0-21swapper/121:22:161
134491460,3ptp4l0-21swapper/119:44:571
134491460,2ptp4l0-21swapper/120:40:461
900399451,3cyclictest121rcu_preempt20:42:173
9003994510,5cyclictest41-21ksoftirqd/300:05:443
900199459,8cyclictest25-21ksoftirqd/121:15:261
900199459,8cyclictest25-21ksoftirqd/121:15:261
9001994514,3cyclictest25-21ksoftirqd/100:10:201
9001994513,4cyclictest25-21ksoftirqd/122:53:411
134491450,5ptp4l6710-21ls22:30:260
134491450,4ptp4l0-21swapper/119:46:471
134491450,4ptp4l0-21swapper/022:03:300
134491450,4ptp4l0-21swapper/021:38:420
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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