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2026-03-21 - 03:38
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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 Sat Mar 21, 2026 00:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
489899684,62cyclictest20804-21kworker/1:219:50:481
134491650,5ptp4l0-21swapper/321:40:123
4897996429,4cyclictest9-21ksoftirqd/022:15:170
4897996330,6cyclictest9-21ksoftirqd/021:15:000
134491610,4ptp4l0-21swapper/023:20:250
4897996021,6cyclictest9-21ksoftirqd/000:35:230
4897996021,6cyclictest9-21ksoftirqd/000:35:230
134491600,3ptp4l22473-21ls20:55:202
4897995927,3cyclictest9-21ksoftirqd/019:25:450
4897995923,6cyclictest9-21ksoftirqd/021:49:460
4897995823,3cyclictest9-21ksoftirqd/020:21:140
4897995725,5cyclictest9-21ksoftirqd/022:50:260
134491570,4ptp4l0-21swapper/119:15:261
4897995620,8cyclictest9-21ksoftirqd/000:15:000
134491560,4ptp4l0-21swapper/221:14:212
134491560,4ptp4l0-21swapper/200:36:082
134491560,4ptp4l0-21swapper/200:36:082
134491560,3ptp4l0-21swapper/220:10:532
134491560,3ptp4l0-21swapper/019:55:170
134491560,3ptp4l0-21swapper/019:10:240
134491560,19ptp4l0-21swapper/323:39:503
489799555,8cyclictest9-21ksoftirqd/020:35:250
4897995528,6cyclictest9-21ksoftirqd/019:35:210
4897995524,5cyclictest9-21ksoftirqd/022:00:260
4897995523,2cyclictest9-21ksoftirqd/022:23:460
4897995522,3cyclictest9-21ksoftirqd/020:45:240
134491550,3ptp4l0-21swapper/021:01:240
4898995413,39cyclictest20804-21kworker/1:219:30:081
489799545,8cyclictest9-21ksoftirqd/021:40:000
489799545,8cyclictest9-21ksoftirqd/021:40:000
489799543,6cyclictest9-21ksoftirqd/021:55:000
4897995427,3cyclictest9-21ksoftirqd/021:31:290
4897995425,8cyclictest9-21ksoftirqd/022:30:130
134491540,4ptp4l0-21swapper/223:14:062
134491540,4ptp4l0-21swapper/222:21:502
134491540,4ptp4l0-21swapper/219:55:122
134491540,4ptp4l0-21swapper/200:15:092
134491540,3ptp4l489899cyclictest21:58:291
4898995315,36cyclictest6780-21kworker/1:120:54:491
489799535,9cyclictest9-21ksoftirqd/000:05:180
489799535,6cyclictest9-21ksoftirqd/020:45:010
489799533,8cyclictest9-21ksoftirqd/022:10:170
4897995323,8cyclictest9-21ksoftirqd/022:40:140
4897995323,6cyclictest9-21ksoftirqd/023:32:080
4897995323,3cyclictest9-21ksoftirqd/019:44:030
4897995322,2cyclictest9-21ksoftirqd/023:38:300
4897995320,6cyclictest9-21ksoftirqd/021:40:130
134491530,4ptp4l0-21swapper/319:47:073
134491530,4ptp4l0-21swapper/221:28:252
134491530,4ptp4l0-21swapper/220:07:222
134491530,4ptp4l0-21swapper/219:30:412
134491530,3ptp4l0-21swapper/200:29:072
489799525,7cyclictest9-21ksoftirqd/020:50:220
489799524,6cyclictest9-21ksoftirqd/021:20:170
489799522,8cyclictest9-21ksoftirqd/023:00:180
4897995226,4cyclictest9-21ksoftirqd/000:33:040
4897995225,6cyclictest9-21ksoftirqd/000:24:010
489799521,8cyclictest9-21ksoftirqd/022:35:140
134491520,4ptp4l0-21swapper/019:22:220
4900995116,4cyclictest41-21ksoftirqd/321:55:013
489799516,5cyclictest9-21ksoftirqd/020:35:010
489799515,7cyclictest9-21ksoftirqd/021:25:260
489799515,5cyclictest9-21ksoftirqd/022:55:210
489799514,7cyclictest9-21ksoftirqd/022:45:120
4897995124,9cyclictest9-21ksoftirqd/021:05:140
4897995124,9cyclictest9-21ksoftirqd/021:05:140
489799512,11cyclictest0-21swapper/019:45:140
489799510,6cyclictest9-21ksoftirqd/023:40:130
134491510,4ptp4l0-21swapper/222:44:412
134491510,3ptp4l0-21swapper/220:35:192
134491510,10ptp4l3680-21ntp_states19:05:220
490099509,10cyclictest41-21ksoftirqd/322:28:153
489799505,3cyclictest9-21ksoftirqd/000:25:210
489799504,5cyclictest9-21ksoftirqd/021:55:170
489799504,5cyclictest9-21ksoftirqd/019:15:140
489799504,3cyclictest121rcu_preempt20:05:290
489799501,11cyclictest9-21ksoftirqd/023:05:200
134491500,3ptp4l0-21swapper/319:53:533
134491500,3ptp4l0-21swapper/221:37:312
134491500,3ptp4l0-21swapper/221:37:312
489799493,6cyclictest9-21ksoftirqd/020:15:160
489799492,7cyclictest0-21swapper/022:05:270
489799492,6cyclictest0-21swapper/022:25:140
489799492,5cyclictest9-21ksoftirqd/021:00:000
489799492,5cyclictest0-21swapper/020:05:000
134491490,4ptp4l0-21swapper/323:28:593
134491490,4ptp4l0-21swapper/223:46:582
134491490,3ptp4l0-21swapper/221:49:182
134491490,12ptp4l3899-21sensors19:05:231
134491490,10ptp4l0-21swapper/319:05:113
490099486,2cyclictest121rcu_preempt00:10:243
4900994818,4cyclictest41-21ksoftirqd/321:39:493
4900994818,4cyclictest41-21ksoftirqd/321:39:493
490099480,2cyclictest121rcu_preempt22:52:423
4898994812,35cyclictest6780-21kworker/1:123:36:091
489799484,9cyclictest9-21ksoftirqd/023:15:120
489799483,9cyclictest9-21ksoftirqd/021:15:170
489799481,7cyclictest9-21ksoftirqd/019:30:160
4900994712,5cyclictest41-21ksoftirqd/300:39:483
4900994712,5cyclictest41-21ksoftirqd/300:39:483
489799475,6cyclictest9-21ksoftirqd/020:25:280
489799475,5cyclictest9-21ksoftirqd/023:55:150
489799474,6cyclictest9-21ksoftirqd/019:50:200
489799474,5cyclictest9-21ksoftirqd/020:15:010
489799472,5cyclictest9-21ksoftirqd/000:00:190
134491470,6ptp4l0-21swapper/220:30:132
134491470,4ptp4l0-21swapper/322:35:203
134491470,4ptp4l0-21swapper/123:18:341
134491470,3ptp4l0-21swapper/320:50:153
134491470,3ptp4l0-21swapper/222:29:592
134491470,3ptp4l0-21swapper/123:10:271
134491470,3ptp4l0-21swapper/121:16:261
134491470,3ptp4l0-21swapper/119:45:241
490099466,4cyclictest41-21ksoftirqd/320:37:473
4900994612,8cyclictest41-21ksoftirqd/300:33:223
489799463,5cyclictest9-21ksoftirqd/023:10:240
489799463,5cyclictest9-21ksoftirqd/000:20:010
134491460,3ptp4l0-21swapper/223:25:242
4900994513,5cyclictest41-21ksoftirqd/322:22:013
4900994440,2cyclictest41-21ksoftirqd/322:45:013
490099441,2cyclictest121rcu_preempt20:28:123
4900994412,4cyclictest41-21ksoftirqd/323:18:123
489799444,3cyclictest9-21ksoftirqd/023:45:240
134491440,6ptp4l0-21swapper/323:49:583
134491440,4ptp4l24524-21apt-get23:20:111
134491440,4ptp4l19158-21apt-get20:50:102
134491440,12ptp4l0-21swapper/221:20:172
134491440,10ptp4l0-21swapper/220:29:502
490099432,9cyclictest41-21ksoftirqd/320:15:003
490099431,3cyclictest121rcu_preempt23:32:203
4900994311,4cyclictest41-21ksoftirqd/320:05:003
490099430,2cyclictest121rcu_preempt23:52:033
489799435,5cyclictest9-21ksoftirqd/023:25:270
489799431,6cyclictest9-21ksoftirqd/023:50:140
134491430,9ptp4l0-21swapper/222:31:012
134491430,4ptp4l18610-21date19:40:001
134491430,4ptp4l10431-21apt-get22:50:122
134491430,12ptp4l0-21swapper/220:45:112
134491430,10ptp4l0-21swapper/221:53:002
490099429,4cyclictest41-21ksoftirqd/321:48:553
4900994237,3cyclictest41-21ksoftirqd/322:10:013
4900994236,4cyclictest41-21ksoftirqd/300:25:003
4900994236,3cyclictest41-21ksoftirqd/320:24:593
4900994235,4cyclictest41-21ksoftirqd/323:40:263
4900994226,7cyclictest41-21ksoftirqd/321:15:013
490099421,3cyclictest121rcu_preempt23:14:153
4900994210,4cyclictest41-21ksoftirqd/320:34:413
4900994210,4cyclictest41-21ksoftirqd/319:23:143
490099420,2cyclictest134491ptp4l00:16:453
489899429,31cyclictest0-21swapper/123:28:081
134491420,8ptp4l0-21swapper/220:22:492
134491420,6ptp4l2878-21cat19:05:142
134491420,5ptp4l24877-21apt-get00:30:141
134491420,5ptp4l0-21swapper/323:20:193
134491420,4ptp4l9543-21apt-get19:20:111
134491420,4ptp4l6198-21df23:50:141
134491420,4ptp4l23693-21ntp_states00:25:223
134491420,4ptp4l15313-21apt-get23:00:102
134491420,4ptp4l0-21swapper/222:19:462
490099417,8cyclictest41-21ksoftirqd/321:20:013
490099414,2cyclictest0-21swapper/323:05:333
490099411,6cyclictest121rcu_preempt23:59:243
490099411,3cyclictest121rcu_preempt19:59:473
4900994111,8cyclictest41-21ksoftirqd/319:25:213
4900994111,7cyclictest41-21ksoftirqd/319:15:003
489899412,5cyclictest7397-21apt-get20:25:121
489899412,2cyclictest0-21swapper/122:55:471
134491410,8ptp4l0-21swapper/221:30:562
134491410,8ptp4l0-21swapper/219:16:302
134491410,6ptp4l0-21swapper/321:00:133
134491410,5ptp4l14105-21/usr/sbin/munin00:05:241
134491410,4ptp4l5452-21apt-get21:30:111
134491410,4ptp4l30524-21apt-get20:05:133
134491410,4ptp4l22949-21ntp_states22:05:231
134491410,4ptp4l21946-21irqstats19:45:192
134491410,4ptp4l1498-21iostat22:30:171
134491410,4ptp4l1074-21df_inode21:20:141
134491410,4ptp4l0-21swapper/200:34:272
134491410,3ptp4l7752-21apt-get21:35:131
134491410,3ptp4l7752-21apt-get21:35:131
134491410,3ptp4l3150-21apt-get21:25:111
134491410,3ptp4l31043-21apt-get22:25:131
134491410,3ptp4l28010-21apt-get20:00:111
134491410,3ptp4l26854-21iostat_ios21:05:182
134491410,3ptp4l26854-21iostat_ios21:05:182
134491410,3ptp4l24131-21apt-get22:10:122
134491410,3ptp4l1313-21apt-get23:40:121
134491410,3ptp4l0-21swapper/319:34:203
134491410,10ptp4l0-21swapper/119:25:321
490099408,6cyclictest41-21ksoftirqd/319:40:243
490099405,4cyclictest41-21ksoftirqd/322:01:293
4900994035,3cyclictest41-21ksoftirqd/321:30:193
4900994034,3cyclictest41-21ksoftirqd/322:55:583
4900994034,3cyclictest41-21ksoftirqd/321:00:013
4900994012,7cyclictest41-21ksoftirqd/322:45:173
134491400,5ptp4l1657-21cut23:40:152
134491400,5ptp4l0-21swapper/323:00:183
134491400,5ptp4l0-21swapper/219:13:182
134491400,5ptp4l0-21swapper/120:05:261
134491400,4ptp4l4861-21ls22:35:271
134491400,4ptp4l23398-21apt-get19:50:122
134491400,4ptp4l11398-21ntp_states21:40:222
134491400,4ptp4l0-21swapper/223:39:322
134491400,4ptp4l0-21swapper/221:19:382
134491400,4ptp4l0-21swapper/219:43:142
134491400,4ptp4l0-21swapper/122:40:011
134491400,4ptp4l0-21swapper/122:00:151
134491400,4ptp4l0-21swapper/121:45:101
134491400,4ptp4l0-21swapper/121:03:371
134491400,4ptp4l0-21swapper/120:35:221
134491400,4ptp4l0-21swapper/120:10:271
134491400,4ptp4l0-21swapper/119:14:431
134491400,3ptp4l26706-21/usr/sbin/munin21:05:161
134491400,3ptp4l26706-21/usr/sbin/munin21:05:161
134491400,3ptp4l25539-21ls23:20:202
134491400,3ptp4l19014-21df19:40:131
134491400,3ptp4l17912-21df_inode23:05:122
134491400,3ptp4l14466-21ls00:05:283
134491400,11ptp4l0-21swapper/100:17:541
490099394,8cyclictest41-21ksoftirqd/320:40:173
4900993935,3cyclictest41-21ksoftirqd/300:00:123
4900993934,3cyclictest41-21ksoftirqd/322:15:013
134491390,8ptp4l0-21swapper/200:21:122
134491390,5ptp4l0-21swapper/322:15:123
134491390,5ptp4l0-21swapper/321:20:173
134491390,5ptp4l0-21swapper/223:18:112
134491390,5ptp4l0-21swapper/100:03:451
134491390,4ptp4l28948-21ls20:00:202
134491390,4ptp4l17925-21cut21:55:172
134491390,4ptp4l0-21swapper/321:59:303
134491390,4ptp4l0-21swapper/320:45:233
134491390,4ptp4l0-21swapper/223:55:152
134491390,4ptp4l0-21swapper/223:51:122
134491390,4ptp4l0-21swapper/223:33:342
134491390,4ptp4l0-21swapper/222:45:252
134491390,4ptp4l0-21swapper/222:35:162
134491390,4ptp4l0-21swapper/222:07:162
134491390,4ptp4l0-21swapper/222:03:322
134491390,4ptp4l0-21swapper/220:41:532
134491390,4ptp4l0-21swapper/220:18:342
134491390,4ptp4l0-21swapper/219:35:242
134491390,4ptp4l0-21swapper/219:24:022
134491390,4ptp4l0-21swapper/200:00:192
134491390,4ptp4l0-21swapper/122:47:101
134491390,4ptp4l0-21swapper/122:20:181
134491390,4ptp4l0-21swapper/121:10:541
134491390,4ptp4l0-21swapper/120:49:361
134491390,4ptp4l0-21swapper/120:42:541
134491390,4ptp4l0-21swapper/120:20:141
134491390,4ptp4l0-21swapper/119:55:191
134491390,4ptp4l0-21swapper/100:20:271
134491390,4ptp4l0-21swapper/100:10:261
134491390,3ptp4l18725-21ntp_states23:05:201
134491390,3ptp4l0-21swapper/221:02:092
134491390,3ptp4l0-21swapper/123:55:121
134491390,3ptp4l0-21swapper/123:00:261
490099387,4cyclictest41-21ksoftirqd/319:15:503
490099382,2cyclictest121rcu_preempt21:25:153
134491380,4ptp4l0-21swapper/322:30:033
134491380,4ptp4l0-21swapper/320:15:133
134491380,4ptp4l0-21swapper/222:55:232
134491380,4ptp4l0-21swapper/219:26:492
134491380,4ptp4l0-21swapper/200:05:242
134491380,4ptp4l0-21swapper/123:46:251
134491380,4ptp4l0-21swapper/123:30:171
134491380,4ptp4l0-21swapper/122:10:031
134491380,4ptp4l0-21swapper/121:51:291
134491380,4ptp4l0-21swapper/121:41:121
134491380,4ptp4l0-21swapper/120:55:271
134491380,4ptp4l0-21swapper/120:30:051
134491380,4ptp4l0-21swapper/120:15:261
134491380,4ptp4l0-21swapper/100:35:101
134491380,4ptp4l0-21swapper/100:35:101
134491380,4ptp4l0-21swapper/100:25:241
134491380,3ptp4l0-21swapper/319:36:103
134491380,3ptp4l0-21swapper/200:13:432
134491380,3ptp4l0-21swapper/122:50:231
134491370,4ptp4l0-21swapper/122:15:541
134491370,3ptp4l0-21swapper/321:05:153
134491370,3ptp4l0-21swapper/321:05:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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