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2026-05-17 - 07:00
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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 792 highest latencies:
System rackdslot1.osadl.org (updated Sun May 17, 2026 00:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1865799763,31cyclictest0-21swapper/223:25:232
134491720,3ptp4l0-21swapper/120:44:561
134491700,22ptp4l17507-21/usr/sbin/munin22:35:160
1865799683,30cyclictest0-21swapper/222:50:152
134491660,5ptp4l4062-21phc2sys-jitter20:55:251
18657996535,6cyclictest33-21ksoftirqd/222:15:192
18657996531,9cyclictest33-21ksoftirqd/220:15:002
18657996531,9cyclictest33-21ksoftirqd/220:15:002
18657996128,4cyclictest33-21ksoftirqd/223:40:262
134491610,5ptp4l0-21swapper/220:29:002
101332610,5sleep11865699cyclictest21:10:161
134491590,3ptp4l0-21swapper/320:17:143
134491580,4ptp4l0-21swapper/021:07:580
134491580,3ptp4l0-21swapper/123:32:471
18657995723,5cyclictest33-21ksoftirqd/223:20:222
134491570,4ptp4l0-21swapper/323:07:423
134491560,5ptp4l1865599cyclictest00:10:580
134491560,3ptp4l0-21swapper/322:43:063
18657995511,2cyclictest121rcu_preempt20:20:012
134491550,4ptp4l0-21swapper/321:10:223
134491550,4ptp4l0-21swapper/022:50:140
134491550,4ptp4l0-21swapper/021:42:330
134491550,3ptp4l0-21swapper/220:45:202
134491550,2ptp4l22453-21ls21:35:201
1865799545,8cyclictest33-21ksoftirqd/200:10:252
18657995446,6cyclictest0-21swapper/223:15:272
18657995446,6cyclictest0-21swapper/223:15:272
18657995422,7cyclictest33-21ksoftirqd/223:05:302
134491540,5ptp4l0-21swapper/020:33:160
134491540,4ptp4l0-21swapper/020:54:070
134491540,3ptp4l0-21swapper/020:12:120
134491540,3ptp4l0-21swapper/020:12:120
18657995317,4cyclictest33-21ksoftirqd/220:40:132
134491530,4ptp4l15185-21irqrtprio22:30:181
134491530,4ptp4l0-21swapper/023:02:460
134491530,3ptp4l0-21swapper/322:14:023
1865799525,7cyclictest33-21ksoftirqd/220:25:012
1865799525,6cyclictest33-21ksoftirqd/219:15:222
1865799525,4cyclictest33-21ksoftirqd/200:30:012
1865799524,8cyclictest33-21ksoftirqd/221:40:002
1865799524,7cyclictest33-21ksoftirqd/222:30:182
18657995244,6cyclictest0-21swapper/222:35:262
1865799522,7cyclictest0-21swapper/223:35:142
1865799520,6cyclictest0-21swapper/200:00:222
134491520,4ptp4l0-21swapper/121:00:451
134491520,3ptp4l0-21swapper/120:30:361
1865799515,5cyclictest33-21ksoftirqd/200:05:272
1865799514,9cyclictest33-21ksoftirqd/221:00:222
1865799514,5cyclictest33-21ksoftirqd/220:30:152
1865799513,7cyclictest33-21ksoftirqd/220:05:262
1865799511,6cyclictest0-21swapper/220:00:222
1865799511,5cyclictest0-21swapper/221:20:272
134491510,5ptp4l0-21swapper/219:07:272
134491510,4ptp4l0-21swapper/323:22:323
134491510,4ptp4l0-21swapper/021:33:000
134491510,4ptp4l0-21swapper/019:17:500
134491510,4ptp4l0-21swapper/019:10:580
134491510,3ptp4l0-21swapper/000:02:130
1865799505,9cyclictest33-21ksoftirqd/221:25:142
1865799504,6cyclictest0-21swapper/200:35:292
1865799504,5cyclictest33-21ksoftirqd/221:45:212
1865799504,5cyclictest33-21ksoftirqd/220:40:002
1865799504,5cyclictest33-21ksoftirqd/219:55:162
1865799504,5cyclictest33-21ksoftirqd/219:45:132
1865799504,5cyclictest33-21ksoftirqd/219:30:292
1865799504,3cyclictest121rcu_preempt22:05:252
1865799502,7cyclictest0-21swapper/219:35:152
1865799502,6cyclictest33-21ksoftirqd/223:49:592
1865799502,6cyclictest33-21ksoftirqd/221:15:242
1865799502,6cyclictest0-21swapper/222:26:292
1865799501,5cyclictest0-21swapper/221:40:172
1865799500,6cyclictest33-21ksoftirqd/221:50:232
1865799500,6cyclictest33-21ksoftirqd/220:50:152
134491500,4ptp4l0-21swapper/323:45:153
134491500,4ptp4l0-21swapper/323:39:573
134491500,4ptp4l0-21swapper/319:23:313
134491500,4ptp4l0-21swapper/319:23:313
134491500,4ptp4l0-21swapper/122:55:141
134491500,4ptp4l0-21swapper/119:58:571
134491500,4ptp4l0-21swapper/100:04:581
134491500,4ptp4l0-21swapper/000:16:290
134491500,3ptp4l212-21systemd-journal00:14:591
1865799493,6cyclictest33-21ksoftirqd/222:40:252
1865799492,7cyclictest0-21swapper/223:50:242
1865799492,6cyclictest0-21swapper/223:00:152
1865799492,11cyclictest0-21swapper/219:25:182
1865799491,6cyclictest33-21ksoftirqd/222:20:182
1865799490,7cyclictest33-21ksoftirqd/223:10:152
1865799490,6cyclictest33-21ksoftirqd/200:15:292
1865799490,6cyclictest0-21swapper/219:40:262
134491490,4ptp4l0-21swapper/220:57:542
134491490,4ptp4l0-21swapper/121:50:001
134491490,4ptp4l0-21swapper/100:26:471
134491490,4ptp4l0-21swapper/100:08:481
134491490,4ptp4l0-21swapper/023:51:470
134491490,4ptp4l0-21swapper/022:16:070
134491490,4ptp4l0-21swapper/022:00:560
134491490,3ptp4l0-21swapper/300:32:293
134491490,3ptp4l0-21swapper/123:17:461
134491490,3ptp4l0-21swapper/123:17:461
134491490,3ptp4l0-21swapper/121:53:131
134491490,17ptp4l25-21ksoftirqd/122:39:221
134491490,11ptp4l0-21swapper/123:05:001
1865799484,9cyclictest33-21ksoftirqd/221:30:142
1865799484,7cyclictest33-21ksoftirqd/221:55:182
1865799484,5cyclictest33-21ksoftirqd/219:20:142
1865799484,5cyclictest33-21ksoftirqd/219:20:142
1865799483,5cyclictest33-21ksoftirqd/219:10:262
1865799480,6cyclictest33-21ksoftirqd/223:30:152
1865799480,6cyclictest33-21ksoftirqd/221:05:152
1865799480,6cyclictest0-21swapper/222:13:392
1865799480,12cyclictest33-21ksoftirqd/222:55:182
134491480,6ptp4l0-21swapper/319:07:063
134491480,4ptp4l1865599cyclictest23:37:000
134491480,4ptp4l0-21swapper/322:03:283
134491480,4ptp4l0-21swapper/319:58:123
134491480,4ptp4l0-21swapper/319:45:373
134491480,4ptp4l0-21swapper/122:14:531
134491480,4ptp4l0-21swapper/121:32:271
134491480,4ptp4l0-21swapper/120:38:091
134491480,3ptp4l0-21swapper/319:34:223
134491480,3ptp4l0-21swapper/122:27:531
1865799474,7cyclictest33-21ksoftirqd/222:45:102
1865799474,7cyclictest33-21ksoftirqd/222:45:102
1865799473,5cyclictest33-21ksoftirqd/223:55:162
1865799471,6cyclictest0-21swapper/200:30:072
134491470,5ptp4l0-21swapper/323:57:303
134491470,4ptp4l0-21swapper/121:25:301
134491470,4ptp4l0-21swapper/120:10:381
134491470,4ptp4l0-21swapper/120:10:381
134491470,4ptp4l0-21swapper/120:08:171
134491470,4ptp4l0-21swapper/000:24:580
134491470,3ptp4l0-21swapper/323:19:563
134491470,3ptp4l0-21swapper/323:19:563
134491470,3ptp4l0-21swapper/222:04:412
134491470,3ptp4l0-21swapper/123:37:171
134491470,3ptp4l0-21swapper/100:23:001
134491470,3ptp4l0-21swapper/023:20:270
1865799464,7cyclictest33-21ksoftirqd/200:20:272
1865799463,5cyclictest33-21ksoftirqd/221:10:152
134491460,4ptp4l0-21swapper/121:59:541
134491460,3ptp4l0-21swapper/123:41:011
1865799453,7cyclictest33-21ksoftirqd/219:50:242
134491450,4ptp4l0-21swapper/320:35:273
134491450,4ptp4l0-21swapper/320:24:373
134491450,4ptp4l0-21swapper/021:03:280
134491450,4ptp4l0-21swapper/019:41:120
134491440,4ptp4l0-21swapper/323:45:013
134491440,4ptp4l0-21swapper/300:25:333
134491440,4ptp4l0-21swapper/100:33:211
134491440,3ptp4l0-21swapper/321:33:593
134491440,3ptp4l0-21swapper/022:07:220
134491440,10ptp4l0-21swapper/022:24:390
134491420,9ptp4l0-21swapper/321:08:463
134491420,9ptp4l0-21swapper/023:31:080
134491420,5ptp4l31840-21ntp_states21:55:243
134491420,5ptp4l0-21swapper/023:25:180
134491420,5ptp4l0-21swapper/020:15:240
134491420,5ptp4l0-21swapper/000:05:190
134491420,4ptp4l8772-21memory23:25:213
134491420,4ptp4l25327-21python22:50:261
134491420,4ptp4l0-21swapper/320:30:163
134491420,3ptp4l0-21swapper/100:35:281
134491420,10ptp4l0-21swapper/321:29:303
18658994129,3cyclictest41-21ksoftirqd/323:10:183
134491410,5ptp4l26033-21hddtemp_smartct19:25:171
134491410,5ptp4l15749-21ls23:40:220
134491410,5ptp4l10548-21ps22:20:193
134491410,5ptp4l0-21swapper/321:20:143
134491410,5ptp4l0-21swapper/320:25:203
134491410,5ptp4l0-21swapper/319:40:013
134491410,5ptp4l0-21swapper/119:15:171
134491410,5ptp4l0-21swapper/022:30:160
134491410,5ptp4l0-21swapper/020:35:280
134491410,5ptp4l0-21swapper/020:20:130
134491410,4ptp4l8585-21df00:35:140
134491410,4ptp4l41-21ksoftirqd/321:45:123
134491410,4ptp4l30756-21iostat19:35:170
134491410,4ptp4l30494-21apt-get00:11:013
134491410,4ptp4l17598-21iostat_ios23:45:190
134491410,4ptp4l0-21swapper/021:37:390
134491410,4ptp4l0-21swapper/000:30:240
134491400,5ptp4l11190-21cat20:00:280
134491400,5ptp4l0-21swapper/323:30:273
134491400,5ptp4l0-21swapper/321:50:113
134491400,5ptp4l0-21swapper/123:25:191
134491400,5ptp4l0-21swapper/020:58:080
134491400,4ptp4l9368-21cron20:00:000
134491400,4ptp4l9310-21users22:15:281
134491400,4ptp4l8377-21apt-get00:35:123
134491400,4ptp4l12395-21diskstats21:15:171
134491400,4ptp4l0-21swapper/322:55:223
134491400,4ptp4l0-21swapper/322:45:213
134491400,4ptp4l0-21swapper/322:45:213
134491400,4ptp4l0-21swapper/320:10:243
134491400,4ptp4l0-21swapper/320:10:243
134491400,4ptp4l0-21swapper/123:10:221
134491400,4ptp4l0-21swapper/122:07:111
134491400,4ptp4l0-21swapper/023:10:170
134491400,4ptp4l0-21swapper/022:55:250
134491400,4ptp4l0-21swapper/022:40:260
134491400,4ptp4l0-21swapper/022:25:210
134491400,4ptp4l0-21swapper/021:20:120
134491400,4ptp4l0-21swapper/019:45:150
134491400,3ptp4l18018-21meminfo22:35:203
134491400,3ptp4l14406-21apt-get21:20:121
134491400,3ptp4l0-21swapper/120:00:221
134491400,1ptp4l0-21swapper/122:04:481
134491390,5ptp4l0-21swapper/322:15:193
134491390,4ptp4l30557-21/usr/sbin/munin20:45:183
134491390,4ptp4l29548-21meminfo23:00:201
134491390,4ptp4l1584-21ntp_states20:50:223
134491390,4ptp4l0-21swapper/322:52:243
134491390,4ptp4l0-21swapper/320:55:133
134491390,4ptp4l0-21swapper/320:09:443
134491390,4ptp4l0-21swapper/319:35:183
134491390,4ptp4l0-21swapper/319:25:133
134491390,4ptp4l0-21swapper/319:15:153
134491390,4ptp4l0-21swapper/300:21:173
134491390,4ptp4l0-21swapper/023:55:220
134491390,4ptp4l0-21swapper/022:45:240
134491390,4ptp4l0-21swapper/022:45:240
134491390,4ptp4l0-21swapper/022:15:000
134491390,4ptp4l0-21swapper/021:55:150
134491390,4ptp4l0-21swapper/021:52:510
134491390,4ptp4l0-21swapper/021:25:280
134491390,4ptp4l0-21swapper/021:18:380
134491390,4ptp4l0-21swapper/021:11:050
134491390,4ptp4l0-21swapper/020:46:280
134491390,4ptp4l0-21swapper/020:27:380
134491390,4ptp4l0-21swapper/020:08:590
134491390,4ptp4l0-21swapper/019:51:050
134491390,4ptp4l0-21swapper/019:32:570
134491390,4ptp4l0-21swapper/019:26:550
134491390,3ptp4l3769-21iostat23:15:190
134491390,3ptp4l3769-21iostat23:15:190
134491390,3ptp4l22744-21ntp_states23:55:241
134491390,3ptp4l21391-21perf23:55:011
134491390,3ptp4l17974-21meminfo23:45:211
134491390,3ptp4l0-21swapper/300:05:163
134491390,3ptp4l0-21swapper/119:32:571
134491390,3ptp4l0-21swapper/119:24:331
134491390,3ptp4l0-21swapper/119:24:331
18658993833,3cyclictest41-21ksoftirqd/322:30:133
134491380,5ptp4l0-21swapper/323:50:043
134491380,4ptp4l0-21swapper/322:25:253
134491380,4ptp4l0-21swapper/322:05:013
134491380,4ptp4l0-21swapper/321:40:273
134491380,4ptp4l0-21swapper/321:15:193
134491380,4ptp4l0-21swapper/321:00:163
134491380,4ptp4l0-21swapper/320:40:153
134491380,4ptp4l0-21swapper/320:04:283
134491380,4ptp4l0-21swapper/319:50:233
134491380,4ptp4l0-21swapper/319:10:203
134491380,4ptp4l0-21swapper/300:15:523
134491380,4ptp4l0-21swapper/300:00:203
134491380,4ptp4l0-21swapper/121:42:591
134491380,4ptp4l0-21swapper/119:40:281
134491380,4ptp4l0-21swapper/023:05:260
134491380,4ptp4l0-21swapper/021:45:130
134491380,4ptp4l0-21swapper/020:44:240
134491380,4ptp4l0-21swapper/019:20:160
134491380,4ptp4l0-21swapper/019:20:160
134491380,3ptp4l0-21swapper/123:20:221
134491380,3ptp4l0-21swapper/122:40:181
134491380,3ptp4l0-21swapper/122:23:541
134491380,3ptp4l0-21swapper/120:26:481
134491380,3ptp4l0-21swapper/000:25:270
134491370,5ptp4l0-21swapper/321:35:023
134491370,4ptp4l30672-21idleruntime19:35:161
134491370,4ptp4l0-21swapper/323:03:123
134491370,4ptp4l0-21swapper/122:45:321
134491370,4ptp4l0-21swapper/122:45:321
134491370,4ptp4l0-21swapper/120:20:361
134491370,3ptp4l0-21swapper/121:05:541
134491370,3ptp4l0-21swapper/120:53:441
134491370,3ptp4l0-21swapper/120:47:461
134491370,3ptp4l0-21swapper/120:15:591
134491370,3ptp4l0-21swapper/119:52:291
134491370,3ptp4l0-21swapper/119:46:071
134491370,3ptp4l0-21swapper/119:11:321
134491370,3ptp4l0-21swapper/100:15:131
46198230,6rtkit-daemon0-21swapper/019:05:300
162972123,5sleep10-21swapper/119:05:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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