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2026-06-05 - 09:54
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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 Jun 05, 2026 00:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1845121580,6sleep3745899cyclictest21:50:263
1953021510,6sleep3745899cyclictest20:45:153
2710821280,5sleep3745899cyclictest21:00:193
110442730,4sleep00-21swapper/021:35:220
134491650,4ptp4l0-21swapper/020:49:100
134491630,23ptp4l0-21swapper/120:11:461
7458996230,7cyclictest41-21ksoftirqd/323:40:003
7458996223,6cyclictest41-21ksoftirqd/300:30:163
7458996128,8cyclictest41-21ksoftirqd/322:15:083
745899612,29cyclictest0-21swapper/300:27:353
4562610,3sleep00-21swapper/021:15:000
4562610,3sleep00-21swapper/021:15:000
134491610,18ptp4l0-21swapper/100:25:211
7458996026,3cyclictest41-21ksoftirqd/322:47:543
134491600,3ptp4l22224-21iostat_ios23:10:171
7458995927,3cyclictest41-21ksoftirqd/300:16:283
7458995825,7cyclictest41-21ksoftirqd/300:06:413
745899582,35cyclictest0-21swapper/323:40:583
745899582,35cyclictest0-21swapper/323:40:583
7458995727,9cyclictest41-21ksoftirqd/323:10:233
134491570,4ptp4l0-21swapper/223:55:422
134491570,3ptp4l0-21swapper/121:40:151
134491560,3ptp4l0-21swapper/122:11:151
745899552,7cyclictest0-21swapper/320:25:183
7458995522,8cyclictest41-21ksoftirqd/323:20:593
745899552,23cyclictest0-21swapper/320:18:233
134491550,4ptp4l0-21swapper/122:21:391
134491550,4ptp4l0-21swapper/022:38:080
134491550,4ptp4l0-21swapper/022:11:020
134491550,4ptp4l0-21swapper/021:41:210
134491550,3ptp4l0-21swapper/122:55:451
134491550,11ptp4l6460-21python19:05:231
745899540,13cyclictest41-21ksoftirqd/321:35:113
293902540,2sleep0101ktimersoftd/023:25:190
134491540,4ptp4l0-21swapper/122:44:591
134491530,4ptp4l0-21swapper/121:48:591
134491530,3ptp4l0-21swapper/121:15:191
134491530,12ptp4l0-21swapper/020:22:090
745899523,6cyclictest0-21swapper/319:25:413
745899522,11cyclictest0-21swapper/321:45:263
745599525,6cyclictest9-21ksoftirqd/000:06:490
134491520,4ptp4l0-21swapper/119:25:141
134491520,4ptp4l0-21swapper/000:32:030
134491520,3ptp4l0-21swapper/019:39:420
745899515,7cyclictest41-21ksoftirqd/300:10:273
745899514,6cyclictest0-21swapper/321:16:063
745899513,6cyclictest0-21swapper/320:01:283
745899512,6cyclictest0-21swapper/323:55:223
745899511,6cyclictest0-21swapper/323:30:153
745899510,7cyclictest41-21ksoftirqd/321:55:173
134491510,4ptp4l0-21swapper/221:00:162
134491510,4ptp4l0-21swapper/220:04:062
134491510,4ptp4l0-21swapper/122:17:371
134491510,4ptp4l0-21swapper/121:38:251
134491510,4ptp4l0-21swapper/023:00:160
745899504,5cyclictest0-21swapper/319:43:103
745899503,6cyclictest0-21swapper/300:39:593
745899502,6cyclictest0-21swapper/322:20:163
745899502,6cyclictest0-21swapper/320:55:193
745899501,6cyclictest0-21swapper/319:16:193
134491500,4ptp4l0-21swapper/119:16:591
134491500,4ptp4l0-21swapper/100:35:591
134491500,4ptp4l0-21swapper/022:52:520
134491500,3ptp4l0-21swapper/123:05:231
745899494,6cyclictest41-21ksoftirqd/323:05:283
745899493,6cyclictest41-21ksoftirqd/319:45:003
745899492,6cyclictest0-21swapper/320:05:283
745899492,5cyclictest41-21ksoftirqd/320:10:123
745899492,39cyclictest0-21swapper/319:10:163
745899492,10cyclictest0-21swapper/300:00:133
745899491,7cyclictest41-21ksoftirqd/322:00:203
134491490,9ptp4l5434-21/usr/sbin/munin19:05:130
134491490,5ptp4l0-21swapper/221:09:342
134491490,4ptp4l0-21swapper/223:34:282
134491490,4ptp4l0-21swapper/219:22:062
134491490,4ptp4l0-21swapper/120:19:081
134491490,4ptp4l0-21swapper/119:31:541
134491490,4ptp4l0-21swapper/022:21:380
134491490,3ptp4l0-21swapper/221:14:402
134491490,3ptp4l0-21swapper/221:14:402
134491490,3ptp4l0-21swapper/123:27:391
745899484,7cyclictest41-21ksoftirqd/323:00:253
745899484,7cyclictest0-21swapper/319:34:253
745899484,6cyclictest0-21swapper/322:09:223
745899484,5cyclictest0-21swapper/322:12:273
745899483,8cyclictest41-21ksoftirqd/321:20:133
745899482,7cyclictest0-21swapper/320:20:173
745899482,5cyclictest0-21swapper/322:41:273
745899481,6cyclictest0-21swapper/323:54:043
134491480,4ptp4l0-21swapper/222:47:312
134491480,4ptp4l0-21swapper/022:58:130
134491480,4ptp4l0-21swapper/022:03:070
134491480,4ptp4l0-21swapper/020:25:050
134491480,4ptp4l0-21swapper/000:04:050
134491480,3ptp4l0-21swapper/121:12:081
134491480,3ptp4l0-21swapper/121:12:081
745899473,7cyclictest41-21ksoftirqd/319:40:003
745899473,6cyclictest41-21ksoftirqd/319:25:003
745899473,5cyclictest0-21swapper/323:46:263
745899471,7cyclictest0-21swapper/323:25:433
745899470,7cyclictest41-21ksoftirqd/323:15:143
745899470,6cyclictest41-21ksoftirqd/322:50:253
745899470,5cyclictest12444-21cstates21:40:143
134491470,4ptp4l0-21swapper/100:16:111
134491470,4ptp4l0-21swapper/019:11:450
134491470,3ptp4l0-21swapper/222:52:292
134491470,3ptp4l0-21swapper/022:44:560
745899464,10cyclictest0-21swapper/320:54:513
745899463,6cyclictest41-21ksoftirqd/319:50:133
7458994630,6cyclictest41-21ksoftirqd/322:25:223
745899462,34cyclictest0-21swapper/300:23:303
745899461,6cyclictest41-21ksoftirqd/320:35:263
745899461,6cyclictest0-21swapper/319:55:233
7455994641,3cyclictest9-21ksoftirqd/021:15:190
7455994612,3cyclictest9-21ksoftirqd/019:50:270
134491460,4ptp4l5855-21hddtemp_smartct23:45:151
134491460,4ptp4l0-21swapper/100:14:501
134491460,3ptp4l0-21swapper/120:42:501
745899455,2cyclictest41-21ksoftirqd/322:57:163
745899453,32cyclictest0-21swapper/321:30:273
745899452,6cyclictest0-21swapper/322:30:263
745899452,6cyclictest0-21swapper/321:26:273
134491450,4ptp4l0-21swapper/222:32:092
134491450,4ptp4l0-21swapper/219:57:372
134491450,4ptp4l0-21swapper/122:54:141
134491450,4ptp4l0-21swapper/100:01:451
134491450,4ptp4l0-21swapper/023:20:290
134491450,4ptp4l0-21swapper/023:15:300
134491450,3ptp4l0-21swapper/121:24:561
745899443,7cyclictest41-21ksoftirqd/322:40:013
745899443,6cyclictest0-21swapper/320:41:113
745899443,5cyclictest41-21ksoftirqd/320:35:003
745899443,5cyclictest0-21swapper/321:08:043
745899442,6cyclictest0-21swapper/321:11:453
745899442,6cyclictest0-21swapper/321:11:453
745799441,3cyclictest121rcu_preempt19:35:142
7455994438,3cyclictest9-21ksoftirqd/022:30:000
134491440,4ptp4l0-21swapper/223:13:352
134491440,4ptp4l0-21swapper/121:51:251
134491440,3ptp4l0-21swapper/021:54:430
134491440,3ptp4l0-21swapper/020:36:240
7455994313,4cyclictest9-21ksoftirqd/000:10:220
134491430,9ptp4l0-21swapper/222:22:422
134491430,9ptp4l0-21swapper/221:49:572
134491430,9ptp4l0-21swapper/220:43:212
134491430,9ptp4l0-21swapper/219:30:402
134491430,9ptp4l0-21swapper/019:45:070
134491430,5ptp4l29241-21meminfo19:55:201
134491430,5ptp4l0-21swapper/123:30:261
134491430,4ptp4l24268-21apt-get00:25:122
134491430,4ptp4l17571-21iostat23:00:172
134491430,4ptp4l12292-21apt-get20:30:111
134491430,4ptp4l0-21swapper/023:14:140
134491430,3ptp4l13792-21ls20:30:270
134491430,3ptp4l0-21swapper/121:00:481
134491430,11ptp4l0-21swapper/120:07:041
745599429,4cyclictest9-21ksoftirqd/020:17:000
7455994237,3cyclictest9-21ksoftirqd/000:40:000
134491420,9ptp4l0-21swapper/220:13:582
134491420,9ptp4l0-21swapper/022:48:530
134491420,9ptp4l0-21swapper/020:05:360
134491420,5ptp4l9785-21apt-get23:55:020
134491420,5ptp4l25519-21users20:55:261
134491420,5ptp4l21667-21df_abs19:40:140
134491420,4ptp4l7485-21apt-get19:10:112
134491420,4ptp4l3039-21apt-get21:20:140
134491420,4ptp4l26772-21apt-get00:30:101
134491420,4ptp4l2619-21apt-get20:10:020
134491420,4ptp4l0-21swapper/021:01:470
134491420,3ptp4l0-21swapper/219:27:162
745599418,4cyclictest9-21ksoftirqd/023:43:290
745599418,4cyclictest9-21ksoftirqd/023:43:290
745599418,4cyclictest9-21ksoftirqd/022:31:480
745599414,2cyclictest121rcu_preempt19:30:220
7455994136,3cyclictest9-21ksoftirqd/022:05:280
7455994135,3cyclictest9-21ksoftirqd/000:20:010
134491410,5ptp4l0-21swapper/223:05:102
134491410,4ptp4l8166-21hddtemp_smartct23:50:171
134491410,4ptp4l7849-21df21:30:141
134491410,4ptp4l27107-21ntp_states19:50:221
134491410,4ptp4l24000-21df_inode19:45:141
134491410,4ptp4l19463-21hddtemp_smartct19:35:161
134491410,4ptp4l1878-21ntp_states23:35:220
134491410,4ptp4l0-21swapper/020:54:000
134491410,4ptp4l0-21swapper/019:55:140
134491410,3ptp4l5691-21df22:35:141
134491410,3ptp4l30611-21apt-get20:00:110
134491410,3ptp4l28613-21apt-get22:15:110
134491410,3ptp4l21722-21apt-get22:00:141
134491410,3ptp4l19772-21iostat20:45:171
745599408,4cyclictest9-21ksoftirqd/023:47:300
7455994016,8cyclictest9-21ksoftirqd/019:25:150
7455994011,4cyclictest9-21ksoftirqd/021:25:260
134491400,8ptp4l0-21swapper/200:07:252
134491400,5ptp4l0-21swapper/200:00:222
134491400,4ptp4l7625-21/usr/sbin/munin21:30:110
134491400,4ptp4l28674-21df21:05:141
134491400,4ptp4l19558-21df21:55:140
134491400,4ptp4l16115-21ls21:45:280
134491400,4ptp4l1301-21snmpd00:31:052
134491400,4ptp4l0-21swapper/222:40:592
134491400,4ptp4l0-21swapper/221:34:532
134491400,4ptp4l0-21swapper/220:28:222
134491400,4ptp4l0-21swapper/220:15:522
134491400,4ptp4l0-21swapper/200:21:122
134491400,4ptp4l0-21swapper/123:20:181
134491400,4ptp4l0-21swapper/122:30:271
134491400,4ptp4l0-21swapper/122:05:301
134491400,4ptp4l0-21swapper/120:35:201
134491400,4ptp4l0-21swapper/119:10:061
134491400,4ptp4l0-21swapper/021:05:130
134491400,4ptp4l0-21swapper/019:15:190
134491400,4ptp4l0-21swapper/000:20:150
134491400,3ptp4l8129-21hddtemp_smartct20:20:161
134491400,3ptp4l31457-21irqstats20:00:201
134491400,3ptp4l1779-21meminfo22:25:212
7457993933,4cyclictest33-21ksoftirqd/222:20:002
745599395,2cyclictest121rcu_preempt23:05:120
7455993935,2cyclictest9-21ksoftirqd/020:40:470
134491390,5ptp4l0-21swapper/200:35:132
134491390,4ptp4l25218-21memory00:25:220
134491390,4ptp4l0-21swapper/223:50:082
134491390,4ptp4l0-21swapper/223:46:052
134491390,4ptp4l0-21swapper/223:42:162
134491390,4ptp4l0-21swapper/223:42:162
134491390,4ptp4l0-21swapper/223:21:352
134491390,4ptp4l0-21swapper/223:16:122
134491390,4ptp4l0-21swapper/222:57:542
134491390,4ptp4l0-21swapper/222:35:242
134491390,4ptp4l0-21swapper/222:12:412
134491390,4ptp4l0-21swapper/222:09:592
134491390,4ptp4l0-21swapper/221:59:392
134491390,4ptp4l0-21swapper/221:52:202
134491390,4ptp4l0-21swapper/221:20:282
134491390,4ptp4l0-21swapper/220:55:442
134491390,4ptp4l0-21swapper/220:53:012
134491390,4ptp4l0-21swapper/220:36:122
134491390,4ptp4l0-21swapper/220:30:062
134491390,4ptp4l0-21swapper/219:53:252
134491390,4ptp4l0-21swapper/219:46:242
134491390,4ptp4l0-21swapper/219:43:022
134491390,4ptp4l0-21swapper/200:17:192
134491390,4ptp4l0-21swapper/200:13:112
134491390,4ptp4l0-21swapper/123:36:421
134491390,4ptp4l0-21swapper/123:03:201
134491390,4ptp4l0-21swapper/122:25:181
134491390,4ptp4l0-21swapper/120:25:241
134491390,4ptp4l0-21swapper/100:20:201
134491390,4ptp4l0-21swapper/023:50:210
134491390,4ptp4l0-21swapper/023:30:230
134491390,4ptp4l0-21swapper/020:55:240
134491390,3ptp4l456-21apt-get20:05:132
134491390,3ptp4l19657-21diskstats21:55:161
134491390,3ptp4l0-21swapper/019:20:120
134491380,4ptp4l745699cyclictest22:49:441
134491380,4ptp4l0-21swapper/223:27:232
134491380,4ptp4l0-21swapper/222:04:512
134491380,4ptp4l0-21swapper/221:42:122
134491380,4ptp4l0-21swapper/221:36:322
134491380,4ptp4l0-21swapper/221:25:412
134491380,4ptp4l0-21swapper/221:16:532
134491380,4ptp4l0-21swapper/220:46:142
134491380,4ptp4l0-21swapper/220:21:322
134491380,4ptp4l0-21swapper/219:15:592
134491380,4ptp4l0-21swapper/123:40:121
134491380,4ptp4l0-21swapper/123:40:121
134491380,4ptp4l0-21swapper/123:15:171
134491380,4ptp4l0-21swapper/121:25:161
134491380,4ptp4l0-21swapper/120:50:151
134491380,4ptp4l0-21swapper/119:22:361
134491380,4ptp4l0-21swapper/100:05:191
134491370,4ptp4l0-21swapper/223:35:162
134491370,3ptp4l10356-21grep23:55:141
134491370,3ptp4l0-21swapper/119:40:021
46198210,15rtkit-daemon33-21ksoftirqd/219:09:012
60202123,5sleep30-21swapper/319:05:193
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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