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2026-07-10 - 12:26
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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 Fri Jul 10, 2026 00:45:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
784321410,3sleep1613899cyclictest19:10:291
134491610,4ptp4l0-21swapper/123:00:201
134491610,3ptp4l14934-21memory00:05:231
134491610,3ptp4l0-21swapper/020:28:300
134491600,6ptp4l0-21swapper/319:10:003
134491600,4ptp4l20102-21users23:05:300
134491600,4ptp4l20102-21users23:05:300
134491590,3ptp4l0-21swapper/000:12:280
134491580,5ptp4l22179-21chrt22:02:093
134491580,4ptp4l0-21swapper/100:10:191
134491580,3ptp4l0-21swapper/221:00:272
134491580,3ptp4l0-21swapper/119:39:571
134491580,22ptp4l0-21swapper/123:55:301
134491570,4ptp4l0-21swapper/022:20:260
134491570,4ptp4l0-21swapper/019:48:270
134491570,3ptp4l0-21swapper/200:36:552
134491570,3ptp4l0-21swapper/120:20:201
205052560,4sleep220504-21perf23:10:002
205052560,4sleep220504-21perf23:09:592
134491560,3ptp4l0-21swapper/123:51:011
134491560,3ptp4l0-21swapper/122:33:031
134491560,3ptp4l0-21swapper/122:05:151
134491560,3ptp4l0-21swapper/100:00:261
134491550,4ptp4l0-21swapper/120:13:271
134491550,12ptp4l0-21swapper/221:10:212
134491540,4ptp4l0-21swapper/121:27:201
134491540,4ptp4l0-21swapper/120:41:321
134491540,3ptp4l0-21swapper/120:06:491
134491530,4ptp4l0-21swapper/122:57:131
134491530,3ptp4l9582-21ntp_states19:15:220
134491530,3ptp4l0-21swapper/120:02:491
134491530,3ptp4l0-21swapper/119:50:221
134491520,4ptp4l0-21swapper/123:10:431
134491520,18ptp4l0-21swapper/323:32:523
134491510,3ptp4l0-21swapper/223:35:252
134491510,10ptp4l4111-21diskstats19:05:141
134491500,4ptp4l0-21swapper/119:33:131
134491500,4ptp4l0-21swapper/022:47:140
134491500,3ptp4l0-21swapper/000:38:560
134491490,4ptp4l0-21swapper/320:39:593
134491490,4ptp4l0-21swapper/319:26:163
134491490,4ptp4l0-21swapper/019:39:580
134491490,3ptp4l0-21swapper/222:00:262
614099489,4cyclictest41-21ksoftirqd/321:48:443
614099484,2cyclictest121rcu_preempt20:43:253
614099482,2cyclictest121rcu_preempt19:53:583
614099481,2cyclictest121rcu_preempt00:09:473
134491480,4ptp4l0-21swapper/220:01:042
134491480,4ptp4l0-21swapper/123:25:291
134491480,4ptp4l0-21swapper/119:19:301
134491480,3ptp4l0-21swapper/222:25:202
6140994735,9cyclictest41-21ksoftirqd/323:35:183
614099472,3cyclictest0-21swapper/319:14:393
6140994715,4cyclictest41-21ksoftirqd/322:55:213
134491470,5ptp4l0-21swapper/019:06:310
134491470,4ptp4l0-21swapper/120:18:481
134491470,3ptp4l12513-1kworker/2:2H20:15:012
6140994634,9cyclictest41-21ksoftirqd/300:20:303
614099461,3cyclictest0-21swapper/322:41:123
134491460,9ptp4l0-21swapper/323:22:553
134491460,4ptp4l0-21swapper/220:49:372
134491460,3ptp4l0-21swapper/322:34:343
134491460,3ptp4l0-21swapper/222:35:212
134491460,3ptp4l0-21swapper/222:15:322
134491460,3ptp4l0-21swapper/220:29:352
134491460,3ptp4l0-21swapper/023:21:090
134491460,3ptp4l0-21swapper/022:29:390
6140994533,9cyclictest41-21ksoftirqd/300:30:303
614099452,2cyclictest121rcu_preempt20:10:133
614099451,3cyclictest0-21swapper/300:37:023
6140994511,8cyclictest41-21ksoftirqd/323:52:053
614099450,3cyclictest121rcu_preempt20:24:583
134491450,4ptp4l0-21swapper/220:34:432
134491450,4ptp4l0-21swapper/123:30:541
134491450,4ptp4l0-21swapper/023:31:370
134491450,3ptp4l0-21swapper/120:47:471
134491450,3ptp4l0-21swapper/100:19:181
6140994438,3cyclictest41-21ksoftirqd/321:06:583
614099440,3cyclictest121rcu_preempt20:17:543
134491440,4ptp4l26455-21ls22:10:273
134491440,4ptp4l0-21swapper/322:21:153
134491440,3ptp4l0-21swapper/123:07:201
134491440,3ptp4l0-21swapper/123:07:201
614099439,7cyclictest41-21ksoftirqd/319:44:483
614099439,4cyclictest41-21ksoftirqd/322:16:043
6140994312,5cyclictest41-21ksoftirqd/323:18:233
6140994311,4cyclictest41-21ksoftirqd/321:54:383
614099430,1cyclictest0-21swapper/322:54:363
6137994338,3cyclictest0-21swapper/020:50:200
134491430,9ptp4l26349-21hostname00:30:182
134491430,9ptp4l0-21swapper/221:46:072
134491430,5ptp4l0-21swapper/021:20:210
134491430,4ptp4l0-21swapper/221:20:162
134491430,3ptp4l24953-21apt-get22:10:102
134491430,3ptp4l0-21swapper/220:56:112
134491430,3ptp4l0-21swapper/220:38:552
134491430,3ptp4l0-21swapper/121:50:271
134491430,10ptp4l0-21swapper/220:15:372
6140994237,3cyclictest41-21ksoftirqd/319:20:183
6140994236,3cyclictest41-21ksoftirqd/321:57:593
6140994236,3cyclictest41-21ksoftirqd/321:22:583
6140994236,3cyclictest41-21ksoftirqd/321:15:003
614099422,2cyclictest121rcu_preempt20:09:243
614099421,6cyclictest121rcu_preempt22:36:393
6140994211,3cyclictest41-21ksoftirqd/320:50:203
614099420,3cyclictest121rcu_preempt19:35:343
614099420,2cyclictest121rcu_preempt22:08:223
6137994236,3cyclictest9-21ksoftirqd/022:05:000
134491420,9ptp4l0-21swapper/219:24:122
134491420,8ptp4l0-21swapper/222:53:302
134491420,8ptp4l0-21swapper/220:06:372
134491420,5ptp4l9246-21/usr/sbin/munin21:35:170
134491420,4ptp4l6909-21iostat_ios20:20:170
134491420,4ptp4l4217-21df20:15:140
134491420,4ptp4l27104-21apt-get21:05:130
134491420,4ptp4l14018-21iostat21:45:181
134491420,3ptp4l0-21swapper/123:47:021
134491420,10ptp4l25-21ksoftirqd/122:45:201
134491420,10ptp4l0-21swapper/219:29:422
614099417,8cyclictest41-21ksoftirqd/321:00:243
6140994136,3cyclictest41-21ksoftirqd/321:30:223
6140994135,3cyclictest41-21ksoftirqd/323:28:593
6140994135,3cyclictest41-21ksoftirqd/319:47:583
6140994134,4cyclictest41-21ksoftirqd/300:16:583
614099411,9cyclictest41-21ksoftirqd/321:36:003
614099410,2cyclictest121rcu_preempt20:25:363
6139994135,4cyclictest33-21ksoftirqd/219:44:242
134491410,9ptp4l0-21swapper/223:25:502
134491410,9ptp4l0-21swapper/222:46:032
134491410,5ptp4l25-21ksoftirqd/121:30:141
134491410,5ptp4l0-21swapper/323:45:013
134491410,5ptp4l0-21swapper/323:00:123
134491410,5ptp4l0-21swapper/320:55:153
134491410,5ptp4l0-21swapper/120:25:151
134491410,5ptp4l0-21swapper/000:05:150
134491410,4ptp4l9314-21apt-get23:55:150
134491410,4ptp4l23451-21hddtemp_smartct23:15:191
134491410,4ptp4l22858-21df_inode19:45:141
134491410,4ptp4l19063-21ls21:55:222
134491410,4ptp4l15851-21df19:30:130
134491410,4ptp4l11628-21irqstats19:20:191
134491410,4ptp4l10933-21apt-get20:30:131
134491410,4ptp4l0-21swapper/023:45:160
134491410,4ptp4l0-21swapper/020:40:130
134491410,4ptp4l0-21swapper/020:35:190
134491410,4ptp4l0-21swapper/000:34:470
134491410,3ptp4l32232-21apt-get23:35:121
134491410,3ptp4l25231-21hddtemp_smartct21:00:160
134491410,3ptp4l24593-21ls23:15:310
134491410,3ptp4l11362-21hddtemp_smartct20:30:160
134491410,3ptp4l0-21swapper/122:52:241
6140994035,3cyclictest41-21ksoftirqd/323:05:253
6140994035,3cyclictest41-21ksoftirqd/323:05:253
6140994035,2cyclictest41-21ksoftirqd/321:20:003
6140994034,3cyclictest41-21ksoftirqd/322:45:593
6140994034,3cyclictest41-21ksoftirqd/320:48:583
6140994034,3cyclictest41-21ksoftirqd/320:00:583
6140994034,3cyclictest41-21ksoftirqd/319:31:593
134491400,8ptp4l0-21swapper/223:22:322
134491400,5ptp4l0-21swapper/023:35:150
134491400,5ptp4l0-21swapper/020:10:120
134491400,5ptp4l0-21swapper/020:00:190
134491400,5ptp4l0-21swapper/019:25:170
134491400,4ptp4l29560-21/usr/sbin/munin22:20:272
134491400,4ptp4l26339-21/usr/sbin/munin22:10:261
134491400,4ptp4l26217-21diskstats00:30:161
134491400,4ptp4l13532-21fschecks_time19:25:171
134491400,4ptp4l11628-21apt-get00:00:122
134491400,4ptp4l0-21swapper/320:30:213
134491400,4ptp4l0-21swapper/219:48:032
134491400,4ptp4l0-21swapper/122:39:281
134491400,4ptp4l0-21swapper/120:35:131
134491400,4ptp4l0-21swapper/119:55:161
134491400,4ptp4l0-21swapper/119:40:201
134491400,4ptp4l0-21swapper/100:20:191
134491400,4ptp4l0-21swapper/023:54:250
134491400,4ptp4l0-21swapper/022:08:300
134491400,4ptp4l0-21swapper/021:42:480
134491400,4ptp4l0-21swapper/021:19:210
134491400,4ptp4l0-21swapper/019:55:260
134491400,4ptp4l0-21swapper/000:21:390
134491400,3ptp4l6444-21apt-get22:40:120
134491400,3ptp4l26348-21ls19:50:270
134491400,3ptp4l16477-21apt-get00:10:132
134491400,3ptp4l13877-21hddtemp_smartct21:45:160
134491400,3ptp4l0-21swapper/122:40:261
614099399,3cyclictest41-21ksoftirqd/300:00:313
6140993935,2cyclictest41-21ksoftirqd/323:55:213
6140993934,3cyclictest41-21ksoftirqd/321:40:153
6140993933,3cyclictest41-21ksoftirqd/321:25:583
6140993933,3cyclictest41-21ksoftirqd/319:57:583
6140993933,3cyclictest41-21ksoftirqd/300:27:593
6140993933,3cyclictest41-21ksoftirqd/300:10:593
614099390,2cyclictest121rcu_preempt23:46:553
134491390,5ptp4l9642-21phc2sys-jitter19:15:232
134491390,5ptp4l0-21swapper/223:10:052
134491390,5ptp4l0-21swapper/219:09:332
134491390,5ptp4l0-21swapper/023:00:170
134491390,5ptp4l0-21swapper/019:23:540
134491390,4ptp4l24185-21/usr/sbin/munin00:25:221
134491390,4ptp4l21949-21unixbench_multi22:00:301
134491390,4ptp4l13885-21sed22:55:170
134491390,4ptp4l12681-21sed21:40:292
134491390,4ptp4l0-21swapper/323:10:223
134491390,4ptp4l0-21swapper/223:57:472
134491390,4ptp4l0-21swapper/223:46:012
134491390,4ptp4l0-21swapper/223:00:172
134491390,4ptp4l0-21swapper/222:55:362
134491390,4ptp4l0-21swapper/222:31:442
134491390,4ptp4l0-21swapper/221:30:592
134491390,4ptp4l0-21swapper/221:05:192
134491390,4ptp4l0-21swapper/220:50:132
134491390,4ptp4l0-21swapper/220:41:142
134491390,4ptp4l0-21swapper/219:58:412
134491390,4ptp4l0-21swapper/219:50:402
134491390,4ptp4l0-21swapper/219:39:342
134491390,4ptp4l0-21swapper/200:09:082
134491390,4ptp4l0-21swapper/123:42:331
134491390,4ptp4l0-21swapper/121:55:281
134491390,4ptp4l0-21swapper/121:20:141
134491390,4ptp4l0-21swapper/121:16:581
134491390,4ptp4l0-21swapper/100:36:171
134491390,4ptp4l0-21swapper/023:40:300
134491390,4ptp4l0-21swapper/022:50:270
134491390,4ptp4l0-21swapper/022:15:290
134491390,4ptp4l0-21swapper/021:55:260
134491390,4ptp4l0-21swapper/021:54:460
134491390,4ptp4l0-21swapper/021:33:340
134491390,4ptp4l0-21swapper/020:55:420
134491390,4ptp4l0-21swapper/020:45:270
134491390,4ptp4l0-21swapper/020:05:340
134491390,4ptp4l0-21swapper/019:40:220
134491390,4ptp4l0-21swapper/000:16:020
134491390,4ptp4l0-21swapper/000:00:270
134491390,3ptp4l25913-21iostat_ios23:20:181
134491390,3ptp4l0-21swapper/023:29:570
134491390,3ptp4l0-21swapper/019:10:580
134491390,2ptp4l5543-21ls21:25:322
6140993832,3cyclictest41-21ksoftirqd/319:16:593
134491380,8ptp4l0-21swapper/223:31:022
134491380,5ptp4l0-21swapper/021:10:160
134491380,4ptp4l0-21swapper/322:25:153
134491380,4ptp4l0-21swapper/223:52:372
134491380,4ptp4l0-21swapper/223:19:362
134491380,4ptp4l0-21swapper/222:42:592
134491380,4ptp4l0-21swapper/222:06:562
134491380,4ptp4l0-21swapper/221:50:562
134491380,4ptp4l0-21swapper/221:37:362
134491380,4ptp4l0-21swapper/221:16:282
134491380,4ptp4l0-21swapper/220:21:232
134491380,4ptp4l0-21swapper/219:30:542
134491380,4ptp4l0-21swapper/219:11:142
134491380,4ptp4l0-21swapper/200:29:452
134491380,4ptp4l0-21swapper/200:23:072
134491380,4ptp4l0-21swapper/200:15:242
134491380,4ptp4l0-21swapper/121:10:171
134491380,4ptp4l0-21swapper/120:55:141
134491380,4ptp4l0-21swapper/022:35:180
134491380,4ptp4l0-21swapper/022:10:250
134491380,4ptp4l0-21swapper/021:26:220
134491380,4ptp4l0-21swapper/000:25:240
134491380,3ptp4l0-21swapper/223:40:552
134491380,3ptp4l0-21swapper/122:18:281
134491380,3ptp4l0-21swapper/023:10:250
134491380,3ptp4l0-21swapper/022:30:160
134491370,4ptp4l27194-21cat21:05:141
134491370,4ptp4l0-21swapper/121:37:431
134491370,4ptp4l0-21swapper/120:50:111
134491370,3ptp4l11941-21irqstats21:40:191
134491370,3ptp4l0-21swapper/122:20:251
134491370,3ptp4l0-21swapper/121:03:021
134491360,3ptp4l0-21swapper/122:26:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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