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2026-06-08 - 12:58
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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 376 highest latencies:
System rackdslot1.osadl.org (updated Mon Jun 08, 2026 00:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1116521500,5sleep31288299cyclictest22:30:283
1288299660,28cyclictest25274-21taskset21:53:513
1288299651,31cyclictest28146-21seq23:08:393
1288299650,26cyclictest20693-21sendmail-mta21:43:593
1288299640,29cyclictest8704-21taskset21:19:053
1288299640,28cyclictest3049-21taskset23:25:023
1288299640,28cyclictest30378-21taskset23:12:493
1288299640,28cyclictest27597-21taskset21:59:123
1288299631,28cyclictest30745-21taskset00:22:503
1288299631,27cyclictest28636-21seq19:40:363
1288299630,29cyclictest7195-21seq23:31:343
1288299630,28cyclictest752-21taskset00:29:403
1288299630,28cyclictest29672-21taskset22:01:103
1288299630,28cyclictest29330-21taskset20:54:453
1288299630,27cyclictest22937-21taskset21:48:213
1288299630,27cyclictest16586-21taskset23:53:493
1288299630,27cyclictest14709-21seq19:11:503
1288299630,27cyclictest11154-21taskset20:15:033
1288299630,27cyclictest11154-21taskset20:15:023
134491620,4ptp4l0-21swapper/321:00:073
134491620,4ptp4l0-21swapper/321:00:063
1288299620,28cyclictest6003-21taskset20:03:313
1288299620,27cyclictest12317-21taskset23:45:113
1288299620,26cyclictest31733-21seq19:50:113
1288299620,26cyclictest31445-21seq19:49:223
1288299620,26cyclictest2586-21taskset23:22:043
1288299620,26cyclictest24986-21taskset20:45:063
1288299611,26cyclictest23582-21taskset00:07:203
1288299610,32cyclictest25487-21seq23:01:493
1288299610,27cyclictest21871-21taskset19:27:213
1288299610,26cyclictest20760-21seq22:53:033
1288299610,25cyclictest10987-21taskset21:23:403
1288299600,27cyclictest9252-21taskset22:28:013
1288299600,26cyclictest23223-21taskset22:57:253
1288299600,26cyclictest18097-21taskset21:38:073
1288299600,25cyclictest4495-21apache222:41:573
134491590,4ptp4l0-21swapper/022:29:250
134491590,3ptp4l0-21swapper/200:35:162
1288299591,27cyclictest6623-21taskset22:21:303
1288299590,30cyclictest28532-21taskset00:19:053
1288299590,27cyclictest30729-21awk20:55:243
1288299590,27cyclictest18620-21seq23:55:333
290372580,5sleep20-21swapper/223:10:192
134491580,4ptp4l0-21swapper/023:53:540
134491580,3ptp4l0-21swapper/223:45:262
1288299581,30cyclictest16943-21taskset19:16:093
1288299580,25cyclictest4006-21runrttasks21:08:253
134491570,4ptp4l0-21swapper/000:20:330
1288299570,30cyclictest3671-21seq19:59:053
1288299570,28cyclictest19472-21taskset19:21:063
1288299570,28cyclictest19472-21taskset19:21:063
1288199577,12cyclictest0-21swapper/221:05:212
134491560,3ptp4l0-21swapper/322:10:173
134491560,3ptp4l0-21swapper/221:55:032
1288299560,27cyclictest15366-21taskset20:22:363
1288199563,11cyclictest0-21swapper/221:35:232
134491550,3ptp4l0-21swapper/320:06:233
134491550,3ptp4l0-21swapper/021:10:240
1288299552,20cyclictest0-21swapper/321:11:033
1288299550,27cyclictest30219-21/usr/sbin/munin22:05:233
1288299550,25cyclictest24462-21runrttasks20:41:203
1288199554,5cyclictest0-21swapper/222:55:142
134491540,10ptp4l10753-21df19:05:132
1288299542,20cyclictest0-21swapper/322:49:183
1288199546,13cyclictest0-21swapper/220:35:242
1288299532,20cyclictest0-21swapper/320:28:343
1288299530,31cyclictest5241-21runrttasks00:37:093
1288299530,22cyclictest242822sleep319:33:523
1288299530,22cyclictest221272sleep320:36:063
1288199535,7cyclictest0-21swapper/219:25:242
1288199535,11cyclictest0-21swapper/221:30:182
1288299520,25cyclictest21146-21runrttasks00:03:153
1288299520,23cyclictest133312sleep321:29:103
1288299520,22cyclictest325722chrt23:16:363
1288199525,10cyclictest0-21swapper/220:45:162
1288199523,12cyclictest0-21swapper/222:25:172
1288199522,10cyclictest0-21swapper/222:30:222
134491510,3ptp4l0-21swapper/122:20:261
1288299512,20cyclictest0-21swapper/300:14:153
1288299510,23cyclictest15791-21chrt21:33:313
1288199515,6cyclictest0-21swapper/220:20:232
1288199507,13cyclictest0-21swapper/219:20:282
1288199507,13cyclictest0-21swapper/219:20:282
134491490,3ptp4l0-21swapper/223:22:592
134491490,12ptp4l5068-21df22:20:130
134491480,3ptp4l0-21swapper/222:00:142
1288299482,21cyclictest0-21swapper/322:35:523
1288299482,19cyclictest0-21swapper/322:17:213
1288199483,6cyclictest0-21swapper/223:50:172
1288299470,24cyclictest20030-21taskset20:33:323
1288199475,11cyclictest0-21swapper/223:30:252
1288199474,11cyclictest0-21swapper/221:12:302
134491460,4ptp4l0-21swapper/219:31:462
134491460,3ptp4l0-21swapper/223:42:222
134491460,13ptp4l0-21swapper/220:05:202
134491460,10ptp4l0-21swapper/023:00:320
1288199467,11cyclictest0-21swapper/220:15:192
1288199467,11cyclictest0-21swapper/220:15:192
1288199464,6cyclictest0-21swapper/219:45:152
134491450,9ptp4l0-21swapper/020:55:450
134491450,4ptp4l10037-21apt-get23:40:130
134491450,10ptp4l0-21swapper/020:15:070
134491450,10ptp4l0-21swapper/020:15:070
1288299450,24cyclictest3022-21taskset00:33:093
1288199454,7cyclictest0-21swapper/200:07:312
1288199452,6cyclictest0-21swapper/219:10:242
134491440,9ptp4l0-21swapper/021:24:530
134491440,9ptp4l0-21swapper/020:38:330
134491440,9ptp4l0-21swapper/020:26:420
134491440,9ptp4l0-21swapper/019:36:050
134491440,9ptp4l0-21swapper/019:25:070
134491440,3ptp4l0-21swapper/219:43:152
134491440,2ptp4l121rcu_preempt19:05:200
1288199445,11cyclictest0-21swapper/222:20:232
1288199444,6cyclictest0-21swapper/222:35:152
1288199444,5cyclictest0-21swapper/219:55:222
134491430,9ptp4l0-21swapper/023:22:220
134491430,9ptp4l0-21swapper/022:51:020
134491430,9ptp4l0-21swapper/022:45:090
134491430,9ptp4l0-21swapper/022:06:430
134491430,9ptp4l0-21swapper/021:38:540
134491430,9ptp4l0-21swapper/020:54:310
134491430,9ptp4l0-21swapper/020:04:200
134491430,9ptp4l0-21swapper/000:18:470
134491430,8ptp4l0-21swapper/023:55:530
134491430,10ptp4l0-21swapper/019:47:110
134491430,10ptp4l0-21swapper/000:32:140
1288299432,25cyclictest0-21swapper/320:10:333
1288299432,23cyclictest9488-21taskset23:36:323
1288299431,23cyclictest11907-21taskset23:42:473
1288299430,23cyclictest26363-21taskset19:36:103
1288199435,6cyclictest0-21swapper/221:46:492
1288199435,10cyclictest0-21swapper/220:02:382
1288199433,7cyclictest0-21swapper/219:35:262
1288199433,11cyclictest0-21swapper/223:55:232
1288199433,11cyclictest0-21swapper/221:20:272
1288199433,10cyclictest0-21swapper/223:01:232
134491420,9ptp4l0-21swapper/023:46:430
134491420,9ptp4l0-21swapper/023:39:070
134491420,9ptp4l0-21swapper/023:16:520
134491420,9ptp4l0-21swapper/022:18:060
134491420,9ptp4l0-21swapper/019:30:500
134491420,5ptp4l1287999cyclictest20:20:230
134491420,5ptp4l0-21swapper/223:15:112
134491420,5ptp4l0-21swapper/221:40:142
134491420,5ptp4l0-21swapper/021:15:120
134491420,5ptp4l0-21swapper/020:10:020
134491420,4ptp4l27154-21df19:40:150
134491420,4ptp4l18048-21diskstats19:20:141
134491420,4ptp4l18048-21diskstats19:20:141
134491420,4ptp4l0-21swapper/221:00:042
134491420,4ptp4l0-21swapper/221:00:032
134491420,4ptp4l0-21swapper/023:25:090
1288199423,6cyclictest0-21swapper/220:50:182
1288199423,6cyclictest0-21swapper/219:15:292
1288199422,6cyclictest0-21swapper/220:30:252
1288199421,12cyclictest0-21swapper/200:10:262
134491410,5ptp4l0-21swapper/120:05:281
134491410,5ptp4l0-21swapper/022:30:150
134491410,5ptp4l0-21swapper/021:30:150
134491410,4ptp4l27500-21meminfo00:15:202
134491410,4ptp4l27289-21users21:55:300
134491410,4ptp4l19821-21meminfo22:50:202
134491410,4ptp4l16159-21apt-get21:35:121
134491410,4ptp4l13532-21ls22:35:281
134491410,4ptp4l0-21swapper/100:30:301
134491410,4ptp4l0-21swapper/023:14:180
134491410,4ptp4l0-21swapper/022:35:440
134491410,4ptp4l0-21swapper/022:01:210
1288199412,11cyclictest0-21swapper/220:29:552
134491400,5ptp4l0-21swapper/200:25:232
134491400,5ptp4l0-21swapper/122:00:141
134491400,5ptp4l0-21swapper/119:07:011
134491400,5ptp4l0-21swapper/023:05:150
134491400,4ptp4l31749-21apt-get19:50:102
134491400,4ptp4l0-21swapper/220:10:102
134491400,4ptp4l0-21swapper/119:45:171
134491400,4ptp4l0-21swapper/021:51:300
134491400,4ptp4l0-21swapper/021:48:000
134491400,4ptp4l0-21swapper/021:25:220
134491400,4ptp4l0-21swapper/021:02:520
134491400,4ptp4l0-21swapper/021:02:510
134491400,4ptp4l0-21swapper/020:40:170
134491400,4ptp4l0-21swapper/019:20:030
134491400,4ptp4l0-21swapper/019:20:030
134491400,4ptp4l0-21swapper/000:02:360
134491400,3ptp4l7671-21ls21:15:202
134491400,3ptp4l12909-21apt-get19:10:101
1288199402,12cyclictest0-21swapper/221:25:152
134491390,5ptp4l1288199cyclictest22:05:252
134491390,5ptp4l0-21swapper/220:40:182
134491390,5ptp4l0-21swapper/121:43:591
134491390,5ptp4l0-21swapper/000:35:190
134491390,5ptp4l0-21swapper/000:10:130
134491390,4ptp4l0-21swapper/319:07:513
134491390,4ptp4l0-21swapper/223:25:072
134491390,4ptp4l0-21swapper/223:05:012
134491390,4ptp4l0-21swapper/222:48:472
134491390,4ptp4l0-21swapper/222:40:232
134491390,4ptp4l0-21swapper/222:19:152
134491390,4ptp4l0-21swapper/221:52:372
134491390,4ptp4l0-21swapper/200:00:262
134491390,4ptp4l0-21swapper/121:50:141
134491390,4ptp4l0-21swapper/121:20:191
134491390,4ptp4l0-21swapper/100:27:071
134491390,4ptp4l0-21swapper/023:30:030
134491390,4ptp4l0-21swapper/022:59:170
134491390,4ptp4l0-21swapper/022:40:540
134491390,4ptp4l0-21swapper/021:42:120
134491390,4ptp4l0-21swapper/021:10:000
134491390,4ptp4l0-21swapper/020:45:210
134491390,4ptp4l0-21swapper/020:31:400
134491390,4ptp4l0-21swapper/020:07:220
134491390,4ptp4l0-21swapper/019:55:400
134491390,4ptp4l0-21swapper/019:50:050
134491390,4ptp4l0-21swapper/019:10:450
134491390,4ptp4l0-21swapper/000:05:250
134491390,3ptp4l2198-21ntp_states00:30:232
134491390,3ptp4l0-21swapper/022:10:590
12881993935,2cyclictest311rcuc/220:55:162
12881993933,4cyclictest33-21ksoftirqd/222:11:552
134491380,4ptp4l0-21swapper/200:20:162
134491380,4ptp4l0-21swapper/123:45:291
134491380,4ptp4l0-21swapper/123:29:391
134491380,4ptp4l0-21swapper/122:52:101
134491380,4ptp4l0-21swapper/122:30:141
134491380,4ptp4l0-21swapper/121:45:471
134491380,4ptp4l0-21swapper/121:06:011
134491380,4ptp4l0-21swapper/120:56:531
134491380,4ptp4l0-21swapper/120:15:171
134491380,4ptp4l0-21swapper/120:15:171
134491380,4ptp4l0-21swapper/119:59:191
134491380,4ptp4l0-21swapper/119:27:241
134491380,4ptp4l0-21swapper/019:15:040
134491380,4ptp4l0-21swapper/000:25:090
134491380,3ptp4l0-21swapper/223:35:132
134491380,3ptp4l0-21swapper/122:28:591
134491380,3ptp4l0-21swapper/119:42:531
12880993823,7cyclictest25-21ksoftirqd/100:24:221
134491370,4ptp4l11331-21/usr/sbin/munin21:25:141
134491370,4ptp4l0-21swapper/123:52:531
134491370,4ptp4l0-21swapper/123:39:091
134491370,4ptp4l0-21swapper/123:22:041
134491370,4ptp4l0-21swapper/122:10:021
134491370,4ptp4l0-21swapper/121:30:571
134491370,4ptp4l0-21swapper/121:10:241
134491370,4ptp4l0-21swapper/120:28:251
134491370,4ptp4l0-21swapper/120:13:231
134491370,4ptp4l0-21swapper/120:04:031
134491370,3ptp4l0-21swapper/123:31:221
134491370,3ptp4l0-21swapper/123:01:081
134491370,3ptp4l0-21swapper/122:16:531
134491370,3ptp4l0-21swapper/120:48:481
134491370,3ptp4l0-21swapper/119:39:321
134491370,3ptp4l0-21swapper/100:09:381
12880993732,3cyclictest25-21ksoftirqd/121:19:231
134491360,4ptp4l0-21swapper/120:38:331
134491360,4ptp4l0-21swapper/120:32:021
134491360,4ptp4l0-21swapper/100:18:491
134491360,3ptp4l0-21swapper/123:56:591
134491360,3ptp4l0-21swapper/123:13:051
134491360,3ptp4l0-21swapper/122:58:561
134491360,3ptp4l0-21swapper/122:48:101
134491360,3ptp4l0-21swapper/122:05:251
134491360,3ptp4l0-21swapper/121:55:511
134491360,3ptp4l0-21swapper/120:20:171
134491360,3ptp4l0-21swapper/119:32:051
134491360,3ptp4l0-21swapper/100:39:471
134491360,3ptp4l0-21swapper/100:14:351
12880993630,4cyclictest25-21ksoftirqd/123:16:261
12880993614,19cyclictest694-21switchtime19:50:261
134491350,3ptp4l0-21swapper/123:07:511
134491350,3ptp4l0-21swapper/120:42:491
12880993427,4cyclictest25-21ksoftirqd/121:00:591
12880993427,4cyclictest25-21ksoftirqd/121:00:591
12880993327,4cyclictest25-21ksoftirqd/122:41:051
12880993326,5cyclictest25-21ksoftirqd/120:54:091
134491320,3ptp4l0-21swapper/123:43:501
1288099319,19cyclictest16212-21sed19:15:211
12880993126,3cyclictest25-21ksoftirqd/100:02:521
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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