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2026-04-30 - 15:02
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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 Thu Apr 30, 2026 00:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491710,4ptp4l0-21swapper/020:35:060
2496996930,8cyclictest41-21ksoftirqd/322:30:223
2496996926,3cyclictest41-21ksoftirqd/300:20:143
2496996732,8cyclictest41-21ksoftirqd/320:05:153
2496996630,4cyclictest41-21ksoftirqd/321:55:003
2496996528,4cyclictest41-21ksoftirqd/319:55:003
2496996432,7cyclictest41-21ksoftirqd/322:50:243
2496996431,9cyclictest41-21ksoftirqd/320:25:003
2496996430,7cyclictest41-21ksoftirqd/320:25:283
2496996430,4cyclictest41-21ksoftirqd/323:30:003
2496996427,4cyclictest41-21ksoftirqd/322:20:203
2496996332,7cyclictest41-21ksoftirqd/300:35:013
2496996331,4cyclictest41-21ksoftirqd/319:30:193
2496996330,9cyclictest41-21ksoftirqd/300:00:183
2496996328,7cyclictest41-21ksoftirqd/319:22:383
2496996327,7cyclictest41-21ksoftirqd/323:10:243
134491630,5ptp4l0-21swapper/021:20:110
2496996230,8cyclictest41-21ksoftirqd/320:15:133
2496996228,9cyclictest41-21ksoftirqd/323:30:153
2496996226,8cyclictest41-21ksoftirqd/319:10:133
2496996132,9cyclictest41-21ksoftirqd/319:25:143
2496996127,8cyclictest41-21ksoftirqd/320:45:003
134491610,4ptp4l25785-21taskset21:08:050
2496996031,7cyclictest41-21ksoftirqd/319:35:253
2496996028,9cyclictest41-21ksoftirqd/320:10:163
2496995926,7cyclictest41-21ksoftirqd/323:39:223
134491590,4ptp4l0-21swapper/119:57:451
134491590,18ptp4l0-21swapper/221:15:252
2496995828,7cyclictest41-21ksoftirqd/321:45:003
134491580,4ptp4l0-21swapper/020:10:280
134491580,3ptp4l5674-21irqstats19:15:190
2496995732,8cyclictest41-21ksoftirqd/321:00:273
2496995727,6cyclictest41-21ksoftirqd/300:10:273
2496995726,7cyclictest41-21ksoftirqd/320:30:263
2496995723,6cyclictest41-21ksoftirqd/322:15:003
2496995720,6cyclictest41-21ksoftirqd/323:20:173
134491570,4ptp4l0-21swapper/000:30:340
2496995622,6cyclictest41-21ksoftirqd/300:20:003
2496995619,9cyclictest41-21ksoftirqd/321:25:143
134491560,4ptp4l0-21swapper/023:10:410
134491560,3ptp4l0-21swapper/120:08:051
2496995524,8cyclictest41-21ksoftirqd/319:45:143
134491550,4ptp4l0-21swapper/122:26:081
134491550,4ptp4l0-21swapper/122:26:081
134491550,4ptp4l0-21swapper/122:04:291
134491550,4ptp4l0-21swapper/022:40:560
2496995423,7cyclictest41-21ksoftirqd/323:46:033
2496995422,7cyclictest41-21ksoftirqd/320:45:143
134491540,4ptp4l0-21swapper/122:48:561
134491540,4ptp4l0-21swapper/019:51:210
134491540,3ptp4l13280-21/usr/sbin/munin20:40:210
134491540,3ptp4l0-21swapper/021:10:180
134491540,12ptp4l0-21swapper/120:20:431
249699535,9cyclictest41-21ksoftirqd/320:50:163
249699535,7cyclictest121rcu_preempt21:17:273
249699532,25cyclictest0-21swapper/321:06:593
134491530,4ptp4l0-21swapper/221:38:422
134491530,4ptp4l0-21swapper/022:56:250
134491530,3ptp4l4831-21apt-get19:15:131
249699523,8cyclictest41-21ksoftirqd/322:40:013
249699522,7cyclictest0-21swapper/322:40:163
249699522,16cyclictest0-21swapper/322:04:583
2496995217,7cyclictest41-21ksoftirqd/321:14:343
134491520,9ptp4l32508-21apt-get19:05:122
134491520,4ptp4l0-21swapper/219:10:012
134491520,4ptp4l0-21swapper/121:05:271
134491520,4ptp4l0-21swapper/119:28:421
134491520,4ptp4l0-21swapper/021:40:010
134491520,3ptp4l0-21swapper/021:00:170
249699516,7cyclictest30616-21sh00:40:013
249699513,6cyclictest0-21swapper/321:20:243
249699512,6cyclictest0-21swapper/322:45:363
2496995125,9cyclictest41-21ksoftirqd/323:40:153
207142510,1sleep320717-21sed20:55:273
134491510,4ptp4l0-21swapper/221:23:582
134491510,4ptp4l0-21swapper/219:46:092
2496995032,9cyclictest41-21ksoftirqd/321:45:143
2496995032,10cyclictest41-21ksoftirqd/319:55:003
249699502,5cyclictest41-21ksoftirqd/320:35:233
249699502,11cyclictest0-21swapper/321:30:253
134491500,5ptp4l0-21swapper/223:09:122
134491500,4ptp4l0-21swapper/319:41:093
134491500,4ptp4l0-21swapper/022:52:340
134491500,4ptp4l0-21swapper/020:48:070
134491500,4ptp4l0-21swapper/000:15:140
134491500,3ptp4l0-21swapper/021:59:450
134491500,3ptp4l0-21swapper/021:36:070
134491500,3ptp4l0-21swapper/019:48:470
77392490,4sleep1241ktimersoftd/123:20:231
249699496,6cyclictest41-21ksoftirqd/300:00:003
249699493,6cyclictest0-21swapper/322:27:593
249699493,6cyclictest0-21swapper/322:27:593
134491490,8ptp4l32494-21/usr/sbin/munin19:05:133
134491490,4ptp4l0-21swapper/220:37:422
134491490,3ptp4l0-21swapper/219:20:312
249699485,6cyclictest41-21ksoftirqd/323:00:213
249699484,2cyclictest41-21ksoftirqd/319:15:223
2496994832,9cyclictest41-21ksoftirqd/300:30:003
249699482,7cyclictest0-21swapper/321:35:183
2495994834,12cyclictest33-21ksoftirqd/223:30:002
134491480,5ptp4l0-21swapper/119:05:251
134491480,4ptp4l0-21swapper/222:13:062
134491480,4ptp4l0-21swapper/219:52:282
134491480,4ptp4l0-21swapper/219:31:202
134491480,4ptp4l0-21swapper/021:53:570
249699474,7cyclictest121rcu_preempt22:58:053
249699474,3cyclictest121rcu_preempt21:56:123
249699474,2cyclictest41-21ksoftirqd/323:10:003
249699473,2cyclictest121rcu_preempt22:06:133
2496994721,7cyclictest41-21ksoftirqd/320:00:243
134491470,4ptp4l0-21swapper/222:53:462
134491470,4ptp4l0-21swapper/220:23:282
134491470,4ptp4l0-21swapper/122:10:591
134491470,3ptp4l0-21swapper/223:31:542
134491470,12ptp4l0-21swapper/220:15:232
249699465,5cyclictest41-21ksoftirqd/322:10:173
249699461,2cyclictest41-21ksoftirqd/323:50:013
134491460,6ptp4l0-21swapper/019:07:250
134491460,4ptp4l0-21swapper/023:00:170
134491460,3ptp4l0-21swapper/220:03:492
134491460,3ptp4l0-21swapper/022:28:380
134491460,3ptp4l0-21swapper/022:28:380
134491460,3ptp4l0-21swapper/020:05:240
134491460,10ptp4l0-21swapper/122:38:501
2495994539,3cyclictest25781-21sendmail20:00:002
2494994540,3cyclictest25-21ksoftirqd/100:00:001
134491450,4ptp4l0-21swapper/220:27:102
134491450,4ptp4l0-21swapper/020:29:580
134491450,3ptp4l0-21swapper/223:14:202
134491450,2ptp4l121rcu_preempt21:33:331
134491450,10ptp4l0-21swapper/222:40:402
2496994429,8cyclictest41-21ksoftirqd/323:20:003
134491440,5ptp4l0-21swapper/119:50:241
134491440,4ptp4l0-21swapper/000:10:250
134491440,3ptp4l0-21swapper/020:55:320
249699432,7cyclictest121rcu_preempt00:09:383
134491430,9ptp4l0-21swapper/123:47:421
134491430,9ptp4l0-21swapper/022:38:520
134491430,7ptp4l0-21swapper/019:40:270
134491430,4ptp4l13818-21apt-get19:35:020
134491430,4ptp4l0-21swapper/219:40:292
134491430,4ptp4l0-21swapper/123:27:511
134491430,4ptp4l0-21swapper/023:59:410
134491430,3ptp4l0-21swapper/119:33:481
134491430,12ptp4l0-21swapper/223:36:172
134491430,10ptp4l0-21swapper/200:18:392
134491430,10ptp4l0-21swapper/019:55:070
2494994235,4cyclictest25-21ksoftirqd/121:50:001
134491420,5ptp4l30798-21apt-get21:20:111
134491420,4ptp4l10384-21ls19:25:192
134491420,4ptp4l0-21swapper/120:14:481
134491420,3ptp4l0-21swapper/022:10:180
134491420,13ptp4l0-21swapper/120:01:271
134491420,10ptp4l0-21swapper/219:39:122
2494994136,3cyclictest25-21ksoftirqd/100:05:011
134491410,5ptp4l7452-21df_inode19:20:131
134491410,4ptp4l9066-21python20:30:250
134491410,4ptp4l22223-21memory22:20:221
134491410,4ptp4l20179-21apt-get22:15:021
134491410,4ptp4l1693-21meminfo20:15:191
134491410,4ptp4l12572-21diskstats21:50:161
134491410,4ptp4l11647-21users21:45:290
134491410,4ptp4l0-21swapper/221:42:302
134491410,4ptp4l0-21swapper/123:44:281
134491410,4ptp4l0-21swapper/120:39:101
134491410,4ptp4l0-21swapper/100:38:511
134491410,4ptp4l0-21swapper/020:20:410
134491410,4ptp4l0-21swapper/020:00:220
134491410,3ptp4l8647-21ls19:20:250
134491410,3ptp4l6983-21hddtemp_smartct23:20:160
134491410,3ptp4l26187-21apt-get21:10:131
134491410,3ptp4l0-21swapper/221:06:202
134491410,3ptp4l0-21swapper/121:26:301
134491410,10ptp4l0-21swapper/221:55:292
2494994035,3cyclictest25-21ksoftirqd/123:40:011
134491400,4ptp4l6784-21/usr/sbin/munin21:35:271
134491400,4ptp4l13361-21meminfo23:40:212
134491400,4ptp4l0-21swapper/123:06:411
134491400,4ptp4l0-21swapper/123:01:271
134491400,4ptp4l0-21swapper/122:50:181
134491400,4ptp4l0-21swapper/122:30:481
134491400,4ptp4l0-21swapper/121:57:531
134491400,4ptp4l0-21swapper/121:17:111
134491400,4ptp4l0-21swapper/119:46:011
134491400,4ptp4l0-21swapper/119:41:061
134491400,4ptp4l0-21swapper/119:14:131
134491400,4ptp4l0-21swapper/023:17:120
134491400,4ptp4l0-21swapper/022:47:080
134491400,4ptp4l0-21swapper/022:31:580
134491400,4ptp4l0-21swapper/022:15:320
134491400,4ptp4l0-21swapper/021:30:170
134491400,4ptp4l0-21swapper/020:50:150
134491400,4ptp4l0-21swapper/020:15:220
134491400,4ptp4l0-21swapper/000:20:120
134491400,3ptp4l30158-21users21:15:270
134491400,3ptp4l21572-21df_inode22:20:160
134491400,3ptp4l13242-21ls19:30:270
134491400,3ptp4l12902-21iostat20:40:191
2495993933,4cyclictest33-21ksoftirqd/222:39:282
2494993934,3cyclictest25-21ksoftirqd/123:50:001
134491390,5ptp4l0-21swapper/121:40:121
134491390,4ptp4l28527-21irqstats00:30:181
134491390,4ptp4l2513-21/usr/sbin/munin19:10:110
134491390,4ptp4l1538-21irqstats21:25:190
134491390,4ptp4l0-21swapper/223:00:472
134491390,4ptp4l0-21swapper/222:50:002
134491390,4ptp4l0-21swapper/221:47:032
134491390,4ptp4l0-21swapper/200:00:242
134491390,4ptp4l0-21swapper/123:15:221
134491390,4ptp4l0-21swapper/123:10:201
134491390,4ptp4l0-21swapper/122:56:081
134491390,4ptp4l0-21swapper/122:40:351
134491390,4ptp4l0-21swapper/122:07:231
134491390,4ptp4l0-21swapper/121:00:191
134491390,4ptp4l0-21swapper/120:55:051
134491390,4ptp4l0-21swapper/120:50:231
134491390,4ptp4l0-21swapper/120:48:591
134491390,4ptp4l0-21swapper/120:30:191
134491390,4ptp4l0-21swapper/100:07:141
134491390,4ptp4l0-21swapper/023:37:510
134491390,4ptp4l0-21swapper/023:26:100
134491390,4ptp4l0-21swapper/022:00:390
134491390,4ptp4l0-21swapper/000:26:560
134491390,3ptp4l2318-21gnome-shell00:38:580
134491390,3ptp4l18474-21apt-get00:00:110
134491390,3ptp4l14552-21df_inode19:35:141
134491390,3ptp4l0-21swapper/120:25:071
134491390,3ptp4l0-21swapper/019:25:260
2495993833,3cyclictest33-21ksoftirqd/221:32:202
2495993828,7cyclictest33-21ksoftirqd/221:50:182
134491380,4ptp4l0-21swapper/223:56:122
134491380,4ptp4l0-21swapper/223:50:212
134491380,4ptp4l0-21swapper/222:59:222
134491380,4ptp4l0-21swapper/222:25:462
134491380,4ptp4l0-21swapper/222:25:462
134491380,4ptp4l0-21swapper/222:20:312
134491380,4ptp4l0-21swapper/222:17:322
134491380,4ptp4l0-21swapper/222:04:432
134491380,4ptp4l0-21swapper/221:04:092
134491380,4ptp4l0-21swapper/220:58:022
134491380,4ptp4l0-21swapper/220:30:152
134491380,4ptp4l0-21swapper/220:10:182
134491380,4ptp4l0-21swapper/220:06:352
134491380,4ptp4l0-21swapper/100:16:521
134491380,4ptp4l0-21swapper/023:50:260
134491380,4ptp4l0-21swapper/023:40:150
134491380,4ptp4l0-21swapper/023:30:250
134491380,4ptp4l0-21swapper/000:09:050
134491380,3ptp4l0-21swapper/223:15:512
134491380,3ptp4l0-21swapper/220:45:232
134491380,3ptp4l0-21swapper/200:10:132
134491380,3ptp4l0-21swapper/023:06:150
134491370,5ptp4l21364-21idleruntime-cro00:10:002
134491370,4ptp4l0-21swapper/223:45:362
134491370,4ptp4l0-21swapper/221:11:032
134491370,4ptp4l0-21swapper/123:31:061
134491370,4ptp4l0-21swapper/023:45:300
134491370,3ptp4l0-21swapper/223:20:142
134491370,3ptp4l0-21swapper/222:30:422
134491370,3ptp4l0-21swapper/221:29:262
134491370,3ptp4l0-21swapper/220:51:572
134491370,3ptp4l0-21swapper/100:29:381
134491370,3ptp4l0-21swapper/100:10:241
134491370,3ptp4l0-21swapper/022:05:120
134491370,2ptp4l24762-21apt-get00:20:121
134491360,5ptp4l0-21swapper/200:20:022
134491360,3ptp4l0-21swapper/222:05:012
134491360,3ptp4l0-21swapper/220:40:072
134491360,3ptp4l0-21swapper/219:16:032
134491360,3ptp4l0-21swapper/200:37:302
134491360,3ptp4l0-21swapper/200:27:092
2495993226,4cyclictest33-21ksoftirqd/200:30:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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