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2026-08-03 - 06:06
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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 highest latencies:
System rackdslot1.osadl.org (updated Mon Aug 03, 2026 00:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1606499750,31cyclictest22952-21sed20:35:010
134491690,5ptp4l24456-21switchtime20:35:273
134491690,35ptp4l25-21ksoftirqd/121:49:501
16066996732,3cyclictest33-21ksoftirqd/220:10:252
1606599671,32cyclictest20472-21seq20:29:531
1606499672,26cyclictest0-21swapper/022:00:440
1606499672,26cyclictest0-21swapper/021:09:450
1606499672,26cyclictest0-21swapper/019:40:030
1606499672,25cyclictest0-21swapper/022:12:230
1606499662,25cyclictest0-21swapper/000:18:490
16066996533,4cyclictest33-21ksoftirqd/220:00:162
1606499652,26cyclictest0-21swapper/023:06:550
1606599647,24cyclictest29455-21taskset19:36:531
1606499642,26cyclictest0-21swapper/020:42:420
1606499642,26cyclictest0-21swapper/020:18:030
1606499642,26cyclictest0-21swapper/019:23:270
1606499642,26cyclictest0-21swapper/000:38:260
1606499642,25cyclictest0-21swapper/023:13:130
1606499642,25cyclictest0-21swapper/021:01:430
1606499642,25cyclictest0-21swapper/019:26:270
1606499632,25cyclictest0-21swapper/020:51:040
1606499632,25cyclictest0-21swapper/019:33:500
1606499622,26cyclictest0-21swapper/000:25:430
1606499622,25cyclictest0-21swapper/023:46:280
1606499622,25cyclictest0-21swapper/023:27:260
1606499622,25cyclictest0-21swapper/022:08:340
1606499622,25cyclictest0-21swapper/021:34:290
134491620,4ptp4l0-21swapper/222:10:402
1606499612,26cyclictest0-21swapper/023:53:580
1606499612,26cyclictest0-21swapper/019:59:010
1606499612,25cyclictest0-21swapper/023:01:140
1606499612,25cyclictest0-21swapper/020:23:320
1606499612,25cyclictest0-21swapper/000:23:530
1606499612,25cyclictest0-21swapper/000:05:400
1606499612,24cyclictest0-21swapper/020:06:110
1606499612,23cyclictest0-21swapper/022:55:410
1606499612,22cyclictest0-21swapper/020:25:490
1606499602,25cyclictest0-21swapper/023:18:220
1606499602,25cyclictest0-21swapper/020:02:340
1606499602,25cyclictest0-21swapper/019:50:590
1606499602,24cyclictest0-21swapper/000:04:160
134491600,16ptp4l0-21swapper/322:35:133
16066995924,4cyclictest33-21ksoftirqd/200:15:012
16066995923,5cyclictest33-21ksoftirqd/221:35:002
1606599591,34cyclictest23026-21taskset22:54:051
1606499592,25cyclictest0-21swapper/021:52:460
1606499592,24cyclictest0-21swapper/023:56:130
1606499592,24cyclictest0-21swapper/022:42:530
1606499592,24cyclictest0-21swapper/021:37:220
1606499592,23cyclictest0-21swapper/021:26:270
1606499592,23cyclictest0-21swapper/021:26:270
16066995825,6cyclictest33-21ksoftirqd/223:35:132
1606599583,53cyclictest25734-21kworker/1:000:33:481
1606499582,26cyclictest0-21swapper/022:20:280
1606499582,26cyclictest0-21swapper/020:56:140
134491580,4ptp4l0-21swapper/222:17:122
134491580,3ptp4l0-21swapper/223:24:582
16066995726,5cyclictest33-21ksoftirqd/221:40:232
16066995724,5cyclictest33-21ksoftirqd/221:05:132
16066995723,8cyclictest33-21ksoftirqd/220:20:172
16066995720,4cyclictest33-21ksoftirqd/222:03:332
1606499572,25cyclictest0-21swapper/023:36:130
1606499572,25cyclictest0-21swapper/022:28:370
1606499572,25cyclictest0-21swapper/021:18:040
1606499572,25cyclictest0-21swapper/021:10:540
1606499572,23cyclictest0-21swapper/022:51:260
134491570,4ptp4l0-21swapper/323:35:263
134491570,4ptp4l0-21swapper/323:10:363
134491570,4ptp4l0-21swapper/223:58:432
134491570,3ptp4l0-21swapper/322:32:533
134491570,3ptp4l0-21swapper/223:15:542
134491570,3ptp4l0-21swapper/222:33:422
16066995627,6cyclictest33-21ksoftirqd/220:15:212
16066995626,4cyclictest33-21ksoftirqd/222:35:162
16066995624,7cyclictest33-21ksoftirqd/219:35:182
16066995624,3cyclictest33-21ksoftirqd/223:05:242
16066995622,6cyclictest33-21ksoftirqd/222:46:312
1606599561,26cyclictest16036-21chrt22:38:471
1606499562,25cyclictest0-21swapper/022:38:200
1606499562,25cyclictest0-21swapper/019:12:560
1606499562,23cyclictest0-21swapper/022:47:060
134491560,4ptp4l0-21swapper/319:40:313
134491560,3ptp4l7748-21if_err_enp4s022:20:183
134491560,3ptp4l0-21swapper/323:50:273
134491560,3ptp4l0-21swapper/320:01:053
134491560,3ptp4l0-21swapper/319:54:593
134491560,17ptp4l0-21swapper/300:25:183
16066995526,5cyclictest33-21ksoftirqd/220:52:562
16066995524,8cyclictest33-21ksoftirqd/223:05:012
16066995523,5cyclictest33-21ksoftirqd/220:45:232
16066995521,4cyclictest33-21ksoftirqd/222:43:342
16066995520,6cyclictest33-21ksoftirqd/221:55:012
1606599551,25cyclictest1317-21runrttasks21:23:211
1606599551,25cyclictest1317-21runrttasks21:23:211
1606499552,26cyclictest0-21swapper/021:40:430
1606499552,26cyclictest0-21swapper/000:33:440
1606499552,25cyclictest0-21swapper/023:21:150
1606499552,24cyclictest0-21swapper/021:24:420
1606499552,24cyclictest0-21swapper/021:24:420
134491550,4ptp4l0-21swapper/222:23:002
134491550,3ptp4l0-21swapper/321:25:283
134491550,3ptp4l0-21swapper/321:25:273
134491550,3ptp4l0-21swapper/222:59:112
1606699547,5cyclictest33-21ksoftirqd/219:20:012
16066995424,5cyclictest33-21ksoftirqd/200:39:062
16066995422,5cyclictest33-21ksoftirqd/223:45:232
16066995421,6cyclictest33-21ksoftirqd/223:30:012
16066995420,5cyclictest33-21ksoftirqd/220:30:282
1606499542,25cyclictest0-21swapper/022:19:330
1606499542,23cyclictest0-21swapper/020:45:020
1606499542,23cyclictest0-21swapper/019:37:460
134491540,4ptp4l0-21swapper/300:39:213
134491540,4ptp4l0-21swapper/220:07:302
134491540,3ptp4l0-21swapper/300:24:083
16066995333,8cyclictest33-21ksoftirqd/221:55:142
16066995324,5cyclictest33-21ksoftirqd/219:10:182
16066995324,4cyclictest33-21ksoftirqd/220:42:392
16066995324,3cyclictest33-21ksoftirqd/219:20:152
16066995323,3cyclictest33-21ksoftirqd/223:30:252
16066995321,5cyclictest33-21ksoftirqd/223:40:152
16066995318,5cyclictest33-21ksoftirqd/219:50:212
1606599531,26cyclictest20349-21taskset19:18:111
1606599530,4cyclictest4953-21hddtemp_smartct19:55:181
1606499532,24cyclictest0-21swapper/021:45:560
1606499532,24cyclictest0-21swapper/019:48:540
1606499532,24cyclictest0-21swapper/000:12:070
16064995310,18cyclictest1317-21runrttasks20:38:360
134491530,4ptp4l0-21swapper/321:31:483
134491530,4ptp4l0-21swapper/320:49:393
134491530,4ptp4l0-21swapper/221:45:552
134491530,3ptp4l0-21swapper/300:30:233
16066995222,6cyclictest33-21ksoftirqd/221:25:172
16066995222,6cyclictest33-21ksoftirqd/221:25:172
16066995222,3cyclictest33-21ksoftirqd/223:10:192
16066995222,3cyclictest33-21ksoftirqd/200:02:162
16066995220,5cyclictest33-21ksoftirqd/200:05:542
16066995220,3cyclictest33-21ksoftirqd/200:25:192
16066995211,6cyclictest33-21ksoftirqd/222:30:002
1606599520,3cyclictest31258-21latency22:00:201
1606499522,26cyclictest0-21swapper/022:34:470
134491520,5ptp4l0-21swapper/219:07:052
134491520,5ptp4l0-21swapper/219:07:052
134491520,4ptp4l0-21swapper/220:58:352
16066995115,11cyclictest33-21ksoftirqd/220:35:142
1606499512,24cyclictest0-21swapper/023:33:520
134491510,5ptp4l0-21swapper/320:30:233
134491510,4ptp4l0-21swapper/321:13:083
134491510,3ptp4l0-21swapper/300:18:533
16066995020,6cyclictest33-21ksoftirqd/221:20:142
16066995020,6cyclictest33-21ksoftirqd/221:20:142
16066995019,3cyclictest33-21ksoftirqd/219:25:202
16066995012,5cyclictest33-21ksoftirqd/200:15:162
134491500,4ptp4l0-21swapper/322:56:333
134491500,4ptp4l0-21swapper/322:25:263
134491500,3ptp4l0-21swapper/321:05:543
134491500,2ptp4l0-21swapper/320:23:403
134491500,2ptp4l0-21swapper/319:30:113
1606699492,4cyclictest0-21swapper/223:50:562
16066994912,7cyclictest33-21ksoftirqd/221:15:002
134491490,7ptp4l0-21swapper/321:35:403
134491490,4ptp4l0-21swapper/323:19:273
134491490,3ptp4l0-21swapper/321:00:243
134491490,10ptp4l0-21swapper/322:40:233
16066994821,3cyclictest33-21ksoftirqd/219:30:142
16066994816,6cyclictest33-21ksoftirqd/219:40:222
16066994816,4cyclictest33-21ksoftirqd/222:50:482
134491480,7ptp4l0-21swapper/319:22:373
134491480,4ptp4l0-21swapper/323:07:463
134491480,4ptp4l0-21swapper/322:51:323
134491480,4ptp4l0-21swapper/322:15:283
134491480,3ptp4l0-21swapper/323:00:263
134491480,3ptp4l0-21swapper/322:45:053
134491480,3ptp4l0-21swapper/319:35:273
16066994716,3cyclictest33-21ksoftirqd/221:16:292
16066994715,5cyclictest33-21ksoftirqd/200:31:302
134491470,5ptp4l0-21swapper/320:08:453
134491470,4ptp4l0-21swapper/200:21:282
134491470,3ptp4l0-21swapper/320:14:023
134491470,12ptp4l0-21swapper/122:32:531
16066994628,4cyclictest33-21ksoftirqd/219:50:012
16066994614,7cyclictest33-21ksoftirqd/221:00:172
1606599468,25cyclictest27585-21seq21:52:491
1606599462,22cyclictest0-21swapper/123:31:581
1606499462,26cyclictest0-21swapper/020:12:240
134491460,5ptp4l32628-21apt-get22:05:133
134491460,4ptp4l0-21swapper/320:43:023
134491460,4ptp4l0-21swapper/220:27:582
134491460,3ptp4l0-21swapper/320:18:503
134491460,3ptp4l0-21swapper/120:00:291
134491460,11ptp4l0-21swapper/121:38:511
1606699451,2cyclictest121rcu_preempt19:59:592
134491450,5ptp4l0-21swapper/322:10:113
134491450,4ptp4l19114-21apt-get23:55:133
134491450,4ptp4l0-21swapper/321:20:013
134491450,4ptp4l0-21swapper/321:20:013
134491450,4ptp4l0-21swapper/300:01:253
1606599441,26cyclictest29444-21seq20:46:501
134491440,5ptp4l7624-21hddtemp_smartct22:20:161
134491440,4ptp4l32242-21apt-get20:55:143
134491440,4ptp4l18446-21apt-get20:25:133
134491440,4ptp4l0-21swapper/319:46:363
134491440,3ptp4l2749-21apt-get23:20:133
134491440,10ptp4l0-21swapper/321:16:063
134491440,10ptp4l0-21swapper/319:11:323
1606599432,23cyclictest0-21swapper/122:46:121
1606599431,27cyclictest22812-21taskset21:40:351
134491430,5ptp4l0-21swapper/322:00:123
134491430,4ptp4l0-21swapper/300:07:323
16066994237,3cyclictest33-21ksoftirqd/221:40:002
16066994235,4cyclictest33-21ksoftirqd/222:08:132
1606599421,38cyclictest23983-21meminfo20:35:211
1606599420,3cyclictest10540-21missed_timers21:15:211
134491420,4ptp4l19289-21irqstats19:15:200
134491420,4ptp4l1185-21sensors_temp19:45:261
134491420,3ptp4l22620-21ls21:40:263
1606499412,30cyclictest0-21swapper/023:40:250
134491410,5ptp4l0-21swapper/321:50:193
134491410,4ptp4l761-21iostat_ios22:05:191
134491410,4ptp4l0-21swapper/321:45:183
134491410,4ptp4l0-21swapper/320:50:273
134491410,4ptp4l0-21swapper/021:55:210
1606599401,36cyclictest3530-21memory22:10:201
1606599401,26cyclictest29931-21/usr/sbin/munin20:50:301
134491400,5ptp4l0-21swapper/319:25:133
134491400,5ptp4l0-21swapper/120:43:341
134491400,5ptp4l0-21swapper/119:44:401
134491400,4ptp4l23485-21latency_hist00:05:011
134491400,4ptp4l12378-21meminfo20:10:201
134491400,4ptp4l0-21swapper/323:30:123
134491400,4ptp4l0-21swapper/323:25:263
134491400,4ptp4l0-21swapper/319:55:263
134491400,4ptp4l0-21swapper/300:10:063
134491400,4ptp4l0-21swapper/123:15:201
134491400,4ptp4l0-21swapper/119:25:201
134491400,3ptp4l14070-21df_inode20:15:141
134491400,3ptp4l12166-21apt-get23:40:103
134491390,4ptp4l0-21swapper/323:45:463
134491390,4ptp4l0-21swapper/321:55:313
134491390,4ptp4l0-21swapper/319:15:213
134491390,4ptp4l0-21swapper/319:05:183
134491390,4ptp4l0-21swapper/319:05:183
134491390,4ptp4l0-21swapper/123:40:231
134491390,4ptp4l0-21swapper/122:55:311
134491390,4ptp4l0-21swapper/122:15:271
134491390,4ptp4l0-21swapper/121:00:271
134491390,4ptp4l0-21swapper/120:57:081
134491390,4ptp4l0-21swapper/120:05:051
134491390,4ptp4l0-21swapper/119:34:131
1606599380,35cyclictest17027-21iostat22:40:161
134491380,5ptp4l0-21swapper/100:15:171
134491380,4ptp4l0-21swapper/121:11:221
134491380,4ptp4l0-21swapper/100:21:381
134491380,3ptp4l0-21swapper/123:46:311
134491380,3ptp4l0-21swapper/123:14:301
134491380,3ptp4l0-21swapper/123:08:081
134491380,3ptp4l0-21swapper/123:02:361
134491380,3ptp4l0-21swapper/120:32:241
134491380,3ptp4l0-21swapper/100:04:181
134491370,4ptp4l0-21swapper/121:55:481
134491370,4ptp4l0-21swapper/121:07:051
134491370,3ptp4l0-21swapper/123:25:191
134491370,3ptp4l0-21swapper/123:23:231
134491370,3ptp4l0-21swapper/121:30:261
134491370,3ptp4l0-21swapper/120:20:161
134491370,3ptp4l0-21swapper/100:36:221
134491370,3ptp4l0-21swapper/100:10:161
1606599361,31cyclictest2318-21gnome-shell23:56:591
134491360,4ptp4l0-21swapper/122:25:011
134491360,4ptp4l0-21swapper/119:51:171
134491360,3ptp4l0-21swapper/121:27:271
134491360,3ptp4l0-21swapper/121:27:271
134491360,3ptp4l0-21swapper/119:13:091
1606599351,30cyclictest2318-21gnome-shell23:36:591
1606599341,29cyclictest2318-21gnome-shell23:52:591
1606599323,27cyclictest25734-21kworker/1:000:26:081
1606599320,3cyclictest22023-21/usr/sbin/munin19:20:241
141632303,5sleep10-21swapper/119:05:181
141632303,5sleep10-21swapper/119:05:181
153792220,4sleep00-21swapper/019:05:280
153792220,4sleep00-21swapper/019:05:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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