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2026-04-12 - 03:39
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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 Sun Apr 12, 2026 00:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491610,4ptp4l26053-21diskstats20:15:170
134491590,4ptp4l0-21swapper/122:34:061
134491580,17ptp4l0-21swapper/119:25:011
134491570,4ptp4l0-21swapper/300:21:383
134491570,4ptp4l0-21swapper/122:10:231
134491570,4ptp4l0-21swapper/120:05:591
134491570,3ptp4l0-21swapper/000:35:260
134491560,4ptp4l0-21swapper/220:46:472
134491560,16ptp4l0-21swapper/119:40:271
134491550,5ptp4l0-21swapper/021:00:260
134491550,4ptp4l0-21swapper/120:12:271
134491550,3ptp4l24039-21fschecks_time21:20:171
134491550,20ptp4l0-21swapper/119:27:501
134491540,3ptp4l0-21swapper/322:37:413
134491540,3ptp4l0-21swapper/222:30:452
134491540,3ptp4l0-21swapper/120:57:121
134491540,3ptp4l0-21swapper/023:26:280
134491540,13ptp4l0-21swapper/023:55:280
134491530,5ptp4l0-21swapper/022:15:130
134491520,4ptp4l0-21swapper/323:15:573
134491520,4ptp4l0-21swapper/223:09:232
134491520,4ptp4l0-21swapper/223:09:232
134491520,4ptp4l0-21swapper/000:24:310
134491520,12ptp4l0-21swapper/023:05:280
134491520,12ptp4l0-21swapper/023:05:270
134491520,11ptp4l26553-21ls19:05:200
316352510,6sleep3401ktimersoftd/322:45:153
134491500,9ptp4l25743-21df19:05:141
134491500,4ptp4l0-21swapper/122:18:161
134491500,3ptp4l8706-21proc_pri20:45:260
134491490,4ptp4l0-21swapper/120:30:191
134491490,4ptp4l0-21swapper/119:39:301
134491490,4ptp4l0-21swapper/022:58:470
134491480,4ptp4l0-21swapper/223:26:132
134491480,4ptp4l0-21swapper/121:07:201
134491480,4ptp4l0-21swapper/119:17:121
134491480,4ptp4l0-21swapper/023:54:060
134491480,4ptp4l0-21swapper/020:35:500
134491480,4ptp4l0-21swapper/019:15:590
134491480,3ptp4l0-21swapper/019:53:520
134491480,3ptp4l0-21swapper/019:20:580
134491480,11ptp4l0-21swapper/122:52:031
134491470,8ptp4l0-21swapper/200:07:342
134491470,3ptp4l0-21swapper/223:58:132
134491470,3ptp4l0-21swapper/221:51:122
134491470,3ptp4l0-21swapper/100:34:121
134491470,3ptp4l0-21swapper/019:13:580
134491460,7ptp4l0-21swapper/122:45:251
134491460,4ptp4l0-21swapper/121:10:101
134491460,4ptp4l0-21swapper/121:10:101
134491460,3ptp4l0-21swapper/322:19:253
134491460,3ptp4l0-21swapper/021:14:190
134491460,3ptp4l0-21swapper/021:14:190
2792999450,3cyclictest121rcu_preempt20:26:293
2792999450,3cyclictest121rcu_preempt00:34:593
134491450,4ptp4l0-21swapper/222:00:252
134491450,3ptp4l0-21swapper/223:40:302
134491450,3ptp4l0-21swapper/222:44:332
134491450,3ptp4l0-21swapper/022:43:180
134491450,3ptp4l0-21swapper/020:20:230
134491450,3ptp4l0-21swapper/020:05:290
134491450,11ptp4l0-21swapper/220:56:522
2792999441,3cyclictest121rcu_preempt20:53:003
2792999440,2cyclictest121rcu_preempt20:33:073
27927994439,3cyclictest25-21ksoftirqd/120:29:591
134491440,9ptp4l0-21swapper/220:06:502
134491440,4ptp4l0-21swapper/023:02:550
134491440,3ptp4l0-21swapper/219:54:532
134491440,3ptp4l0-21swapper/020:53:420
134491440,3ptp4l0-21swapper/020:26:140
134491440,10ptp4l0-21swapper/122:59:181
2792999432,3cyclictest0-21swapper/321:43:543
2792999430,3cyclictest121rcu_preempt22:22:473
2792999430,3cyclictest121rcu_preempt20:22:203
2792999430,3cyclictest121rcu_preempt19:45:543
2792999430,2cyclictest121rcu_preempt21:33:333
27927994337,3cyclictest25-21ksoftirqd/123:00:131
134491430,9ptp4l0-21swapper/223:15:532
134491430,4ptp4l16724-21ls00:30:220
134491430,4ptp4l0-21swapper/321:55:553
134491430,4ptp4l0-21swapper/321:38:173
134491430,4ptp4l0-21swapper/023:41:580
134491430,2ptp4l17563-21kworker/2:122:53:162
134491430,2ptp4l0-21swapper/319:50:133
134491430,2ptp4l0-21swapper/023:30:270
27929994236,3cyclictest41-21ksoftirqd/320:05:003
2792999421,2cyclictest121rcu_preempt22:09:403
2792999420,3cyclictest121rcu_preempt23:53:263
2792999420,3cyclictest121rcu_preempt19:23:033
27927994237,3cyclictest25-21ksoftirqd/122:25:001
27927994237,3cyclictest25-21ksoftirqd/121:55:011
27927994235,3cyclictest25-21ksoftirqd/121:30:011
134491420,9ptp4l0-21swapper/221:32:422
134491420,9ptp4l0-21swapper/220:31:402
134491420,5ptp4l24174-21apt-get23:40:041
134491420,4ptp4l0-21swapper/323:30:253
134491420,4ptp4l0-21swapper/022:13:410
134491420,3ptp4l0-21swapper/123:45:141
134491420,3ptp4l0-21swapper/000:28:330
134491420,1ptp4l311rcuc/222:25:002
134491420,12ptp4l0-21swapper/021:30:190
134491420,10ptp4l0-21swapper/221:04:512
27929994137,2cyclictest41-21ksoftirqd/300:40:003
27929994136,3cyclictest11499-21wc19:45:003
27929994123,11cyclictest41-21ksoftirqd/320:12:093
2792999411,3cyclictest121rcu_preempt23:41:463
2792999411,2cyclictest121rcu_preempt23:46:413
134491410,9ptp4l0-21swapper/220:00:312
134491410,9ptp4l0-21swapper/219:32:152
134491410,6ptp4l241ktimersoftd/121:17:291
134491410,5ptp4l2506-21memory00:00:220
134491410,5ptp4l0-21swapper/323:55:223
134491410,5ptp4l0-21swapper/300:05:223
134491410,5ptp4l0-21swapper/120:35:171
134491410,4ptp4l9741-21df_inode19:40:132
134491410,4ptp4l9227-21iostat_ios00:15:181
134491410,4ptp4l8659-21apt-get00:15:123
134491410,4ptp4l29264-21/usr/sbin/munin23:50:252
134491410,4ptp4l28879-21iostat21:30:191
134491410,4ptp4l11534-21meminfo23:10:202
134491410,4ptp4l0-21swapper/121:35:451
134491410,4ptp4l0-21swapper/023:37:340
134491410,4ptp4l0-21swapper/022:00:140
134491410,3ptp4l7687-21apt-get21:55:120
134491410,3ptp4l6362-21apt-get00:10:112
134491410,3ptp4l29842-21iostat23:50:181
134491410,3ptp4l19157-21df_inode20:00:130
134491410,3ptp4l0-21swapper/221:59:092
2792999406,4cyclictest41-21ksoftirqd/322:44:253
2792999406,3cyclictest121rcu_preempt21:46:243
2792999400,2cyclictest121rcu_preempt20:37:083
2792999400,2cyclictest121rcu_preempt19:16:333
27927994035,3cyclictest25-21ksoftirqd/100:39:591
134491400,5ptp4l0-21swapper/221:45:242
134491400,5ptp4l0-21swapper/120:45:131
134491400,5ptp4l0-21swapper/120:21:331
134491400,4ptp4l6933-21iostat_ios00:10:170
134491400,4ptp4l6930-21ls23:00:212
134491400,4ptp4l31179-21iostat_ios21:35:180
134491400,4ptp4l2792999cyclictest22:01:233
134491400,4ptp4l1470-21meminfo21:40:211
134491400,4ptp4l0-21swapper/319:10:123
134491400,4ptp4l0-21swapper/300:25:133
134491400,4ptp4l0-21swapper/222:09:292
134491400,4ptp4l0-21swapper/200:35:262
134491400,4ptp4l0-21swapper/200:15:522
134491400,4ptp4l0-21swapper/023:22:030
134491400,4ptp4l0-21swapper/023:15:520
134491400,4ptp4l0-21swapper/023:14:310
134491400,4ptp4l0-21swapper/022:30:390
134491400,4ptp4l0-21swapper/021:54:590
134491400,4ptp4l0-21swapper/021:40:190
134491400,4ptp4l0-21swapper/021:28:000
134491400,4ptp4l0-21swapper/021:16:490
134491400,4ptp4l0-21swapper/019:47:170
134491400,3ptp4l5836-21ls19:30:201
134491400,3ptp4l14244-21apt-get19:50:111
134491400,3ptp4l11190-21apt-get00:20:102
134491400,3ptp4l0-21swapper/221:44:502
2792999394,4cyclictest41-21ksoftirqd/321:19:173
27929993933,4cyclictest41-21ksoftirqd/319:34:113
27929993928,9cyclictest41-21ksoftirqd/320:45:293
27929993912,4cyclictest41-21ksoftirqd/321:26:113
27927993934,3cyclictest25-21ksoftirqd/121:45:151
27927993932,4cyclictest25-21ksoftirqd/119:59:081
134491390,5ptp4l2792699cyclictest19:41:310
134491390,5ptp4l0-21swapper/323:25:293
134491390,5ptp4l0-21swapper/222:35:192
134491390,5ptp4l0-21swapper/221:10:132
134491390,5ptp4l0-21swapper/221:10:132
134491390,5ptp4l0-21swapper/219:17:132
134491390,4ptp4l17179-21hddtemp_smartct21:05:170
134491390,4ptp4l13747-21/usr/sbin/munin20:55:280
134491390,4ptp4l0-21swapper/323:23:023
134491390,4ptp4l0-21swapper/323:10:213
134491390,4ptp4l0-21swapper/323:05:293
134491390,4ptp4l0-21swapper/323:05:293
134491390,4ptp4l0-21swapper/322:58:583
134491390,4ptp4l0-21swapper/322:33:583
134491390,4ptp4l0-21swapper/321:50:193
134491390,4ptp4l0-21swapper/320:18:393
134491390,4ptp4l0-21swapper/223:35:262
134491390,4ptp4l0-21swapper/223:30:282
134491390,4ptp4l0-21swapper/222:20:012
134491390,4ptp4l0-21swapper/222:15:422
134491390,4ptp4l0-21swapper/222:10:512
134491390,4ptp4l0-21swapper/221:35:402
134491390,4ptp4l0-21swapper/221:24:312
134491390,4ptp4l0-21swapper/220:43:052
134491390,4ptp4l0-21swapper/200:27:322
134491390,4ptp4l0-21swapper/123:35:181
134491390,4ptp4l0-21swapper/123:22:551
134491390,4ptp4l0-21swapper/123:05:391
134491390,4ptp4l0-21swapper/123:05:391
134491390,4ptp4l0-21swapper/122:44:201
134491390,4ptp4l0-21swapper/122:05:291
134491390,4ptp4l0-21swapper/121:57:281
134491390,4ptp4l0-21swapper/120:50:181
134491390,4ptp4l0-21swapper/120:40:161
134491390,4ptp4l0-21swapper/120:00:211
134491390,4ptp4l0-21swapper/119:11:271
134491390,4ptp4l0-21swapper/023:45:250
134491390,4ptp4l0-21swapper/022:46:460
134491390,4ptp4l0-21swapper/022:37:350
134491390,4ptp4l0-21swapper/022:22:110
134491390,4ptp4l0-21swapper/022:05:040
134491390,4ptp4l0-21swapper/020:44:050
134491390,4ptp4l0-21swapper/020:30:170
134491390,4ptp4l0-21swapper/019:55:200
134491390,4ptp4l0-21swapper/019:29:150
134491390,3ptp4l7547-21hddtemp_smartct19:35:140
134491390,3ptp4l33-21ksoftirqd/220:15:182
134491390,3ptp4l17867-21ntp_states21:05:242
134491390,3ptp4l16899-21ntp_states00:30:252
2792999388,4cyclictest41-21ksoftirqd/320:05:153
27929993833,3cyclictest41-21ksoftirqd/322:30:003
27929993833,2cyclictest41-21ksoftirqd/319:40:003
134491380,5ptp4l2792999cyclictest23:35:113
134491380,4ptp4l23814-21grep20:10:160
134491380,4ptp4l19269-21taskset23:26:341
134491380,4ptp4l0-21swapper/323:00:303
134491380,4ptp4l0-21swapper/322:10:153
134491380,4ptp4l0-21swapper/321:10:153
134491380,4ptp4l0-21swapper/321:10:153
134491380,4ptp4l0-21swapper/300:11:083
134491380,4ptp4l0-21swapper/300:03:263
134491380,4ptp4l0-21swapper/223:47:422
134491380,4ptp4l0-21swapper/223:20:262
134491380,4ptp4l0-21swapper/222:55:232
134491380,4ptp4l0-21swapper/222:45:582
134491380,4ptp4l0-21swapper/221:27:412
134491380,4ptp4l0-21swapper/220:36:282
134491380,4ptp4l0-21swapper/220:26:242
134491380,4ptp4l0-21swapper/220:22:132
134491380,4ptp4l0-21swapper/219:45:162
134491380,4ptp4l0-21swapper/219:38:212
134491380,4ptp4l0-21swapper/200:02:032
134491380,4ptp4l0-21swapper/123:32:551
134491380,4ptp4l0-21swapper/122:35:151
134491380,4ptp4l0-21swapper/122:26:511
134491380,4ptp4l0-21swapper/122:00:171
134491380,4ptp4l0-21swapper/120:17:291
134491380,4ptp4l0-21swapper/119:49:591
134491380,4ptp4l0-21swapper/100:07:401
134491380,4ptp4l0-21swapper/021:45:200
134491380,4ptp4l0-21swapper/019:30:140
134491380,4ptp4l0-21swapper/000:15:180
134491380,3ptp4l15790-21python21:00:261
134491380,3ptp4l0-21swapper/220:50:462
134491380,3ptp4l0-21swapper/219:26:492
134491380,3ptp4l0-21swapper/219:20:492
134491380,3ptp4l0-21swapper/123:15:171
134491380,3ptp4l0-21swapper/022:50:210
134491380,3ptp4l0-21swapper/021:20:060
134491380,3ptp4l0-21swapper/000:05:140
27929993733,3cyclictest41-21ksoftirqd/320:55:003
27929993733,3cyclictest41-21ksoftirqd/320:00:003
27929993733,2cyclictest41-21ksoftirqd/321:20:153
134491370,5ptp4l0-21swapper/022:25:000
134491370,4ptp4l0-21swapper/321:03:323
134491370,4ptp4l0-21swapper/219:58:102
134491370,4ptp4l0-21swapper/123:10:161
134491370,4ptp4l0-21swapper/100:20:141
134491370,4ptp4l0-21swapper/100:00:041
134491370,3ptp4l0-21swapper/219:10:102
134491370,3ptp4l0-21swapper/123:55:271
134491370,3ptp4l0-21swapper/100:25:021
134491370,3ptp4l0-21swapper/100:10:181
27929993628,7cyclictest41-21ksoftirqd/320:40:183
134491360,4ptp4l0-21swapper/319:26:533
134491360,4ptp4l0-21swapper/220:11:422
134491360,3ptp4l0-21swapper/321:07:143
134491360,3ptp4l0-21swapper/221:15:572
134491350,3ptp4l0-21swapper/322:51:333
46198210,14rtkit-daemon1456-21mactelnetd19:09:312
261162184,8sleep30-21swapper/319:05:203
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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