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2026-05-14 - 09:37
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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 Thu May 14, 2026 00:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1961021770,7sleep11707999cyclictest23:50:241
3160021480,7sleep11707999cyclictest19:40:151
134491650,5ptp4l0-21swapper/321:00:153
134491650,5ptp4l0-21swapper/321:00:153
134491620,5ptp4l0-21swapper/321:50:163
134491620,5ptp4l0-21swapper/121:05:171
134491620,4ptp4l0-21swapper/019:06:170
134491610,5ptp4l0-21swapper/222:25:262
134491600,6ptp4l0-21swapper/320:00:203
134491590,4ptp4l0-21swapper/021:35:140
253642580,4sleep11707999cyclictest22:55:131
134491580,4ptp4l0-21swapper/223:15:012
134491570,4ptp4l0-21swapper/220:15:172
134491570,3ptp4l30232-21iostat21:55:172
134491570,3ptp4l0-21swapper/223:00:222
134491570,3ptp4l0-21swapper/200:20:012
134491560,4ptp4l0-21swapper/200:34:492
134491560,3ptp4l0-21swapper/223:55:102
134491560,3ptp4l0-21swapper/019:40:240
134491550,5ptp4l0-21swapper/120:35:121
17081995428,3cyclictest41-21ksoftirqd/319:55:013
134491540,4ptp4l0-21swapper/219:20:342
134491540,3ptp4l0-21swapper/020:06:590
134491530,4ptp4l0-21swapper/221:06:132
134491530,4ptp4l0-21swapper/020:16:020
134491530,3ptp4l0-21swapper/322:50:233
134491530,3ptp4l0-21swapper/222:54:122
134491520,4ptp4l0-21swapper/321:35:003
134491520,4ptp4l0-21swapper/300:23:323
134491520,3ptp4l0-21swapper/220:45:252
134491510,4ptp4l0-21swapper/323:53:593
134491510,4ptp4l0-21swapper/323:48:583
134491510,4ptp4l0-21swapper/300:16:133
134491510,4ptp4l0-21swapper/300:09:303
134491510,4ptp4l0-21swapper/119:10:061
134491510,4ptp4l0-21swapper/021:17:350
134491510,3ptp4l0-21swapper/222:43:022
134491500,5ptp4l21721-21sed23:55:210
134491500,4ptp4l0-21swapper/323:59:123
134491500,4ptp4l0-21swapper/121:40:081
134491500,4ptp4l0-21swapper/120:26:121
134491500,3ptp4l0-21swapper/300:00:203
134491500,3ptp4l0-21swapper/220:39:162
134491500,3ptp4l0-21swapper/219:15:242
134491500,2ptp4l5652-21strings23:20:222
134491490,4ptp4l0-21swapper/323:10:393
134491490,4ptp4l0-21swapper/323:00:373
134491490,4ptp4l0-21swapper/319:12:503
134491490,4ptp4l0-21swapper/223:40:212
134491490,4ptp4l0-21swapper/221:29:432
134491490,4ptp4l0-21swapper/121:47:371
134491490,4ptp4l0-21swapper/100:08:521
134491490,3ptp4l0-21swapper/221:04:282
134491490,3ptp4l0-21swapper/221:04:282
134491490,3ptp4l0-21swapper/220:21:412
134491490,3ptp4l0-21swapper/123:11:311
134491490,11ptp4l0-21swapper/322:45:143
1708199480,7cyclictest134491ptp4l20:30:263
134491480,4ptp4l0-21swapper/323:41:273
134491480,4ptp4l0-21swapper/322:55:293
134491480,4ptp4l0-21swapper/321:29:543
134491480,4ptp4l0-21swapper/320:22:313
134491480,4ptp4l0-21swapper/320:16:503
134491480,4ptp4l0-21swapper/319:35:133
134491480,4ptp4l0-21swapper/221:37:302
134491480,4ptp4l0-21swapper/221:20:112
134491480,4ptp4l0-21swapper/123:04:201
134491480,4ptp4l0-21swapper/121:26:531
134491480,4ptp4l0-21swapper/121:03:571
134491480,4ptp4l0-21swapper/121:03:571
134491480,4ptp4l0-21swapper/019:48:590
134491480,4ptp4l0-21swapper/019:48:590
134491480,3ptp4l0-21swapper/223:45:072
134491480,3ptp4l0-21swapper/223:31:102
134491480,3ptp4l0-21swapper/222:00:232
134491480,3ptp4l0-21swapper/119:51:301
134491470,4ptp4l0-21swapper/323:24:173
134491470,4ptp4l0-21swapper/322:30:403
134491470,4ptp4l0-21swapper/320:49:163
134491470,4ptp4l0-21swapper/300:33:383
134491470,4ptp4l0-21swapper/223:38:492
134491470,4ptp4l0-21swapper/221:50:202
134491470,4ptp4l0-21swapper/123:47:381
134491470,4ptp4l0-21swapper/121:32:291
134491470,4ptp4l0-21swapper/023:00:280
134491470,3ptp4l0-21swapper/222:47:412
134491470,11ptp4l0-21swapper/319:27:163
134491460,4ptp4l0-21swapper/300:36:023
134491460,4ptp4l0-21swapper/223:51:252
134491460,4ptp4l0-21swapper/219:25:592
134491460,4ptp4l0-21swapper/000:36:040
134491460,3ptp4l0-21swapper/322:41:143
134491460,3ptp4l0-21swapper/222:55:292
134491460,3ptp4l0-21swapper/222:05:172
134491460,3ptp4l0-21swapper/219:33:332
134491460,2ptp4l121rcu_preempt23:05:172
17078994516,3cyclictest23489-21cut21:40:170
134491450,7ptp4l0-21swapper/321:18:593
134491450,4ptp4l0-21swapper/321:22:453
134491450,4ptp4l0-21swapper/019:39:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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