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2026-01-07 - 13:20
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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 Wed Jan 07, 2026 00:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11255996711,54cyclictest10249-21kworker/1:121:05:491
134491660,24ptp4l18619-21grep19:25:162
11254996232,6cyclictest9-21ksoftirqd/022:41:200
11255996114,45cyclictest23545-21kworker/1:100:15:481
134491600,5ptp4l0-21swapper/121:30:171
134491600,4ptp4l0-21swapper/121:15:201
134491600,4ptp4l0-21swapper/119:05:201
296222590,3sleep129628-21latency23:15:191
134491590,4ptp4l0-21swapper/200:25:042
134491580,5ptp4l0-21swapper/323:27:143
134491570,4ptp4l0-21swapper/221:25:052
134491570,4ptp4l0-21swapper/219:42:082
134491560,4ptp4l0-21swapper/323:50:143
134491560,4ptp4l0-21swapper/219:57:492
134491560,4ptp4l0-21swapper/022:01:580
134491560,3ptp4l0-21swapper/122:24:501
134491550,4ptp4l0-21swapper/200:11:592
134491540,4ptp4l0-21swapper/223:51:282
134491540,4ptp4l0-21swapper/223:25:532
134491540,4ptp4l0-21swapper/221:37:002
134491540,4ptp4l0-21swapper/200:38:212
134491540,3ptp4l0-21swapper/223:40:462
212612530,6sleep30-21swapper/320:40:123
134491530,4ptp4l0-21swapper/300:30:253
134491530,4ptp4l0-21swapper/300:30:253
134491530,4ptp4l0-21swapper/300:00:193
134491530,4ptp4l0-21swapper/220:30:102
134491530,3ptp4l0-21swapper/000:35:070
1125499532,7cyclictest0-21swapper/022:50:210
134491520,4ptp4l0-21swapper/223:36:322
134491520,4ptp4l0-21swapper/221:52:082
134491520,4ptp4l0-21swapper/221:47:482
1125499527,13cyclictest0-21swapper/020:25:170
1125499527,13cyclictest0-21swapper/020:25:170
1125499524,6cyclictest0-21swapper/023:35:240
11254995243,7cyclictest0-21swapper/019:55:270
1125499520,5cyclictest29874-21sshd20:56:460
134491510,4ptp4l0-21swapper/219:08:202
1125499517,11cyclictest0-21swapper/023:30:220
80322500,4sleep00-21swapper/022:30:130
134491500,4ptp4l0-21swapper/220:09:162
134491500,4ptp4l0-21swapper/023:05:450
1125499505,11cyclictest0-21swapper/021:50:250
134491490,4ptp4l28766-21users00:20:291
134491490,4ptp4l0-21swapper/223:23:172
134491490,4ptp4l0-21swapper/223:07:402
1125499493,6cyclictest0-21swapper/021:55:270
1125499493,11cyclictest0-21swapper/023:50:100
1125499492,6cyclictest9-21ksoftirqd/019:50:260
134491480,3ptp4l0-21swapper/221:11:142
134491480,3ptp4l0-21swapper/220:45:322
134491480,3ptp4l0-21swapper/200:09:102
1125599488,38cyclictest10249-21kworker/1:121:01:291
1125499485,6cyclictest0-21swapper/022:20:130
1125499485,6cyclictest0-21swapper/020:40:150
1125499484,3cyclictest134491ptp4l23:19:590
1125499483,6cyclictest9-21ksoftirqd/000:05:150
1125499481,5cyclictest9-21ksoftirqd/022:35:230
134491470,6ptp4l0-21swapper/221:08:332
134491470,3ptp4l0-21swapper/122:00:271
134491470,3ptp4l0-21swapper/019:35:130
134491470,13ptp4l0-21swapper/021:05:220
1125499475,6cyclictest0-21swapper/019:22:180
1125499475,5cyclictest0-21swapper/023:03:340
1125499474,6cyclictest0-21swapper/019:10:280
1125499472,5cyclictest0-21swapper/019:30:280
1125499471,6cyclictest9-21ksoftirqd/021:35:230
1125499471,12cyclictest0-21swapper/020:19:380
134491460,4ptp4l0-21swapper/200:22:202
134491460,3ptp4l0-21swapper/321:16:263
134491460,2ptp4l121rcu_preempt20:40:262
1125499465,5cyclictest0-21swapper/023:45:100
1125499463,6cyclictest31284-21ls22:10:170
1125499462,6cyclictest9-21ksoftirqd/000:00:260
1125499462,6cyclictest0-21swapper/021:30:130
1125499461,5cyclictest101ktimersoftd/000:10:160
134491450,9ptp4l0-21swapper/200:02:162
134491450,4ptp4l0-21swapper/319:05:303
134491450,3ptp4l0-21swapper/022:18:150
1125499452,7cyclictest0-21swapper/020:20:170
1125499452,6cyclictest9-21ksoftirqd/022:05:270
1125499451,6cyclictest9-21ksoftirqd/023:29:590
1125499450,6cyclictest26966-21if_err_enp1s023:10:170
134491440,4ptp4l0-21swapper/300:35:403
134491440,11ptp4l41-21ksoftirqd/322:49:173
134491440,11ptp4l0-21swapper/220:03:352
11257994439,3cyclictest41-21ksoftirqd/320:00:003
1125499442,6cyclictest0-21swapper/020:35:160
134491430,9ptp4l0-21swapper/222:23:562
134491430,9ptp4l0-21swapper/222:15:042
134491430,9ptp4l0-21swapper/221:34:542
134491430,5ptp4l0-21swapper/019:05:060
134491430,4ptp4l0-21swapper/020:10:210
134491430,3ptp4l0-21swapper/320:50:203
134491430,3ptp4l0-21swapper/219:32:412
134491430,3ptp4l0-21swapper/121:57:371
134491430,3ptp4l0-21swapper/120:48:361
134491430,10ptp4l0-21swapper/219:15:282
1125599432,39cyclictest25-21ksoftirqd/100:33:091
1125599432,39cyclictest25-21ksoftirqd/100:33:091
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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