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2026-05-25 - 17:22
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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 Mon May 25, 2026 12:45:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491670,20ptp4l15494-21df_inode08:35:150
134491630,8ptp4l0-21swapper/209:15:112
134491620,3ptp4l25314-21df_inode11:15:150
312552610,4sleep20-21swapper/212:35:272
134491600,4ptp4l0-21swapper/011:25:200
134491600,3ptp4l29199-21apt-get10:15:111
810699597,12cyclictest26784-21taskset11:16:313
810699586,11cyclictest5942-21taskset11:41:113
134491580,4ptp4l0-21swapper/211:08:122
134491580,4ptp4l0-21swapper/107:19:461
134491580,4ptp4l0-21swapper/011:30:150
810599575,10cyclictest0-21swapper/210:31:592
810599575,10cyclictest0-21swapper/210:31:592
810599573,12cyclictest0-21swapper/210:40:262
8105995623,4cyclictest33-21ksoftirqd/208:50:142
134491560,4ptp4l0-21swapper/012:04:240
134491560,3ptp4l0-21swapper/108:20:181
134491560,11ptp4l0-21swapper/107:24:021
134491550,4ptp4l0-21swapper/210:39:322
134491550,4ptp4l0-21swapper/007:28:030
134491540,4ptp4l0-21swapper/109:40:141
134491540,4ptp4l0-21swapper/108:53:531
134491540,4ptp4l0-21swapper/008:25:290
134491540,4ptp4l0-21swapper/008:15:560
134491540,3ptp4l0-21swapper/111:40:231
134491540,3ptp4l0-21swapper/110:13:511
134491540,3ptp4l0-21swapper/010:30:150
134491540,3ptp4l0-21swapper/010:30:150
134491540,3ptp4l0-21swapper/007:13:160
134491540,11ptp4l5769-21apt-get07:05:112
810699538,7cyclictest0-21swapper/310:00:223
810699538,6cyclictest0-21swapper/309:45:163
810599531,9cyclictest0-21swapper/211:55:272
134491530,4ptp4l0-21swapper/010:37:450
134491530,3ptp4l0-21swapper/011:35:150
134491530,3ptp4l0-21swapper/007:37:190
134491530,3ptp4l0-21swapper/007:33:230
115482530,5sleep10-21swapper/110:45:171
810699524,11cyclictest17779-21taskset12:07:373
810599524,8cyclictest33-21ksoftirqd/211:40:012
810599523,11cyclictest0-21swapper/211:49:402
134491520,4ptp4l0-21swapper/210:15:122
134491520,4ptp4l0-21swapper/008:43:000
134491520,4ptp4l0-21swapper/007:16:250
134491520,3ptp4l0-21swapper/010:41:210
134491520,3ptp4l0-21swapper/008:32:350
134491520,12ptp4l0-21swapper/009:49:200
810699518,7cyclictest0-21swapper/309:20:143
810699518,6cyclictest31431-21awk12:35:283
810699518,6cyclictest0-21swapper/309:50:293
810699516,7cyclictest0-21swapper/309:02:403
810599513,13cyclictest0-21swapper/209:20:232
810599513,11cyclictest0-21swapper/207:20:262
810599513,10cyclictest0-21swapper/210:04:552
810599512,8cyclictest0-21swapper/210:45:192
134491510,4ptp4l0-21swapper/011:42:530
134491510,3ptp4l0-21swapper/111:47:171
810699509,7cyclictest0-21swapper/308:31:363
810699508,7cyclictest0-21swapper/311:25:233
810699508,6cyclictest0-21swapper/309:15:243
810699507,6cyclictest0-21swapper/311:20:203
810599503,10cyclictest0-21swapper/208:35:352
134491500,4ptp4l0-21swapper/111:55:281
134491500,4ptp4l0-21swapper/109:11:071
134491500,4ptp4l0-21swapper/008:46:560
134491500,3ptp4l0-21swapper/109:45:251
134491500,3ptp4l0-21swapper/011:10:140
134491500,3ptp4l0-21swapper/011:10:140
810699498,7cyclictest0-21swapper/310:50:213
810699498,7cyclictest0-21swapper/308:50:273
810699497,10cyclictest14479-21seq07:21:013
810699493,9cyclictest0-21swapper/309:55:243
810599494,10cyclictest0-21swapper/212:06:092
810599494,10cyclictest0-21swapper/210:22:562
810599493,11cyclictest0-21swapper/211:54:142
810599492,6cyclictest33-21ksoftirqd/209:50:122
810599492,6cyclictest0-21swapper/208:49:192
134491490,4ptp4l0-21swapper/012:06:530
134491490,4ptp4l0-21swapper/010:52:280
134491490,4ptp4l0-21swapper/010:22:480
134491490,3ptp4l0-21swapper/012:20:340
134491490,3ptp4l0-21swapper/007:45:200
810699487,6cyclictest0-21swapper/309:35:273
810699486,6cyclictest1263-21expr08:05:133
8106994812,6cyclictest41-21ksoftirqd/311:53:373
810699480,12cyclictest29592-21tune2fs10:15:143
810599485,7cyclictest0-21swapper/210:10:222
810599484,10cyclictest0-21swapper/212:31:492
810599484,10cyclictest0-21swapper/208:19:312
810599483,7cyclictest0-21swapper/212:28:482
810599483,6cyclictest33-21ksoftirqd/211:10:162
810599483,6cyclictest33-21ksoftirqd/211:10:162
8105994810,5cyclictest33-21ksoftirqd/212:10:142
134491480,5ptp4l0-21swapper/007:09:250
134491480,4ptp4l0-21swapper/112:28:191
134491480,4ptp4l0-21swapper/111:05:141
134491480,4ptp4l0-21swapper/009:13:550
134491480,4ptp4l0-21swapper/008:00:200
134491480,3ptp4l0-21swapper/108:19:021
134491480,3ptp4l0-21swapper/107:34:061
134491480,3ptp4l0-21swapper/011:04:220
134491480,12ptp4l0-21swapper/210:05:252
810699477,6cyclictest0-21swapper/310:45:213
810699477,6cyclictest0-21swapper/310:10:153
810699477,6cyclictest0-21swapper/309:40:123
810699471,11cyclictest29479-21irqrtprio07:55:163
810699471,11cyclictest29479-21irqrtprio07:55:153
810599474,10cyclictest0-21swapper/212:01:202
810599474,10cyclictest0-21swapper/209:32:362
810599474,10cyclictest0-21swapper/208:31:102
810599473,11cyclictest0-21swapper/207:34:472
810599473,10cyclictest0-21swapper/207:52:042
134491470,3ptp4l0-21swapper/110:27:401
134491470,3ptp4l0-21swapper/109:50:291
134491470,3ptp4l0-21swapper/109:38:211
134491470,3ptp4l0-21swapper/009:30:200
134491470,12ptp4l0-21swapper/212:20:122
810699467,6cyclictest0-21swapper/310:20:283
810699467,6cyclictest0-21swapper/307:30:253
810599464,11cyclictest33-21ksoftirqd/211:35:012
810599464,10cyclictest0-21swapper/210:28:172
810599463,5cyclictest0-21swapper/207:17:002
810599463,10cyclictest0-21swapper/209:49:182
810599463,10cyclictest0-21swapper/209:02:112
134491460,9ptp4l0-21swapper/207:26:262
134491460,4ptp4l401ktimersoftd/311:45:243
134491460,4ptp4l13246-21apt-get10:50:122
134491460,4ptp4l0-21swapper/010:46:280
134491460,3ptp4l0-21swapper/011:50:170
134491460,3ptp4l0-21swapper/010:11:180
810699457,6cyclictest0-21swapper/310:25:283
810699453,6cyclictest0-21swapper/307:10:173
810599454,8cyclictest33-21ksoftirqd/207:45:242
810599454,10cyclictest0-21swapper/208:25:572
810599453,10cyclictest0-21swapper/209:56:442
810599452,6cyclictest33-21ksoftirqd/211:15:022
8105994526,3cyclictest33-21ksoftirqd/208:12:302
810599452,10cyclictest0-21swapper/207:58:142
810599452,10cyclictest0-21swapper/207:58:142
810599450,6cyclictest33-21ksoftirqd/209:25:162
134691450,12getstats0-21swapper/211:05:002
134491450,7ptp4l0-21swapper/110:41:111
134491450,4ptp4l18217-21apt-get12:10:111
134491450,3ptp4l0-21swapper/007:58:350
134491450,3ptp4l0-21swapper/007:58:350
134491450,2ptp4l121rcu_preempt11:04:231
810699446,7cyclictest0-21swapper/307:15:253
810599445,5cyclictest33-21ksoftirqd/209:14:342
810599442,6cyclictest33-21ksoftirqd/208:02:522
810599442,6cyclictest0-21swapper/208:05:592
810599442,5cyclictest33-21ksoftirqd/210:55:162
810599440,5cyclictest33-21ksoftirqd/207:40:252
134491440,7ptp4l0-21swapper/307:05:123
134491440,4ptp4l0-21swapper/111:54:121
134491440,3ptp4l0-21swapper/010:57:410
134491440,3ptp4l0-21swapper/008:55:100
810599434,6cyclictest0-21swapper/209:42:152
810599431,5cyclictest0-21swapper/207:35:152
134491430,9ptp4l0-21swapper/211:29:562
134491430,9ptp4l0-21swapper/208:41:492
134491430,5ptp4l31344-21grep12:35:271
134491430,5ptp4l0-21swapper/111:25:111
134491430,4ptp4l8135-21apt-get07:10:101
134491430,4ptp4l0-21swapper/012:27:040
134491430,4ptp4l0-21swapper/009:44:100
810699426,5cyclictest0-21swapper/311:05:203
810699426,5cyclictest0-21swapper/309:05:253
810699426,11cyclictest0-21swapper/311:34:483
810699420,4cyclictest0-21swapper/308:39:193
810599422,6cyclictest33-21ksoftirqd/209:05:142
810599421,6cyclictest33-21ksoftirqd/208:55:232
134491420,9ptp4l0-21swapper/211:21:282
134491420,6ptp4l0-21swapper/111:15:021
134491420,4ptp4l9285-21irqstats09:30:171
134491420,4ptp4l31638-21perl08:00:153
134491420,4ptp4l24255-21apt-get07:45:121
134491420,4ptp4l2318-21gnome-shell09:37:592
134491420,4ptp4l2052-21iostat_ios09:15:191
134491420,4ptp4l15999-21meminfo07:25:211
134491420,4ptp4l15764-21iostat_ios08:35:201
134491420,4ptp4l11390-21df_inode11:55:130
134491420,4ptp4l0-21swapper/112:24:301
134491420,4ptp4l0-21swapper/012:13:040
134491420,4ptp4l0-21swapper/010:08:410
134491420,4ptp4l0-21swapper/007:44:480
134491420,3ptp4l26608-21apt-get07:50:131
810699415,6cyclictest0-21swapper/308:40:193
810599415,3cyclictest121rcu_preempt12:18:282
134491410,9ptp4l0-21swapper/111:39:051
134491410,9ptp4l0-21swapper/012:34:200
134491410,5ptp4l19947-21df_inode07:35:141
134491410,5ptp4l0-21swapper/310:55:193
134491410,5ptp4l0-21swapper/110:55:211
134491410,5ptp4l0-21swapper/107:06:171
134491410,5ptp4l0-21swapper/010:00:160
134491410,5ptp4l0-21swapper/008:10:140
134491410,4ptp4l4618-21irqstats10:30:191
134491410,4ptp4l4618-21irqstats10:30:191
134491410,4ptp4l30620-21irqstats12:35:190
134491410,4ptp4l18073-21hddtemp_smartct09:50:170
134491410,4ptp4l0-21swapper/308:15:253
134491410,4ptp4l0-21swapper/109:25:151
134491410,4ptp4l0-21swapper/011:20:070
134491410,4ptp4l0-21swapper/008:50:170
134491410,4ptp4l0-21swapper/007:52:300
134491410,3ptp4l4868-21ls09:20:221
134491410,3ptp4l2842-21users08:05:291
134491410,3ptp4l24704-21diskstats08:55:151
134491410,3ptp4l20513-21apt-get12:15:120
134491410,3ptp4l0-21swapper/010:25:080
134491410,3ptp4l0-21swapper/008:21:260
810699405,6cyclictest0-21swapper/307:35:213
810599402,6cyclictest0-21swapper/208:20:202
810599401,2cyclictest121rcu_preempt07:10:132
134491400,5ptp4l0-21swapper/310:32:293
134491400,5ptp4l0-21swapper/310:32:293
134491400,4ptp4l21462-21meminfo12:15:201
134491400,4ptp4l1449-21/usr/sbin/munin09:15:210
134491400,4ptp4l10572-21sshd08:25:031
134491400,4ptp4l0-21swapper/312:30:253
134491400,4ptp4l0-21swapper/311:55:243
134491400,4ptp4l0-21swapper/309:25:173
134491400,4ptp4l0-21swapper/307:25:123
134491400,4ptp4l0-21swapper/211:41:072
134491400,4ptp4l0-21swapper/112:33:371
134491400,4ptp4l0-21swapper/112:09:211
134491400,4ptp4l0-21swapper/111:32:251
134491400,4ptp4l0-21swapper/111:14:391
134491400,4ptp4l0-21swapper/111:14:391
134491400,4ptp4l0-21swapper/110:21:151
134491400,4ptp4l0-21swapper/108:30:221
134491400,4ptp4l0-21swapper/108:10:121
134491400,4ptp4l0-21swapper/108:00:181
134491400,4ptp4l0-21swapper/009:25:240
134491400,4ptp4l0-21swapper/009:21:550
134491400,4ptp4l0-21swapper/007:20:120
134491400,3ptp4l29323-21hddtemp_smartct07:55:141
134491400,3ptp4l29323-21hddtemp_smartct07:55:131
134491400,3ptp4l23074-21ntp_states07:40:221
134491400,3ptp4l0-21swapper/110:05:291
134491400,2ptp4l10945-21df09:35:130
810699396,7cyclictest0-21swapper/312:14:443
134491390,4ptp4l1417-21/usr/sbin/munin08:05:140
134491390,4ptp4l0-21swapper/312:25:223
134491390,4ptp4l0-21swapper/312:20:133
134491390,4ptp4l0-21swapper/312:15:233
134491390,4ptp4l0-21swapper/311:36:593
134491390,4ptp4l0-21swapper/310:05:203
134491390,4ptp4l0-21swapper/308:55:183
134491390,4ptp4l0-21swapper/308:45:163
134491390,4ptp4l0-21swapper/307:40:183
134491390,4ptp4l0-21swapper/112:01:171
134491390,4ptp4l0-21swapper/111:20:471
134491390,4ptp4l0-21swapper/108:45:151
134491390,4ptp4l0-21swapper/108:40:281
134491390,4ptp4l0-21swapper/011:45:150
134491390,4ptp4l0-21swapper/009:05:230
134491390,3ptp4l28111-21python09:00:250
134491390,3ptp4l20896-21memory09:55:201
134491390,3ptp4l0-21swapper/309:10:153
134491390,3ptp4l0-21swapper/109:00:241
134491390,3ptp4l0-21swapper/011:07:450
134491390,3ptp4l0-21swapper/010:18:460
134491390,2ptp4l14286-21strings10:50:211
810699384,5cyclictest0-21swapper/307:50:193
8106993832,3cyclictest41-21ksoftirqd/311:00:163
134491380,4ptp4l0-21swapper/311:10:393
134491380,4ptp4l0-21swapper/311:10:393
134491380,4ptp4l0-21swapper/310:36:193
134491380,4ptp4l0-21swapper/308:25:383
134491380,3ptp4l0-21swapper/307:47:293
134491380,3ptp4l0-21swapper/110:36:431
134491380,3ptp4l0-21swapper/110:00:001
134491380,3ptp4l0-21swapper/109:05:231
134491380,3ptp4l0-21swapper/009:55:150
8106993733,2cyclictest391rcuc/312:00:233
134491370,4ptp4l0-21swapper/310:40:203
134491370,3ptp4l0-21swapper/309:31:253
134491360,4ptp4l0-21swapper/308:21:283
810699271,4cyclictest0-21swapper/308:12:503
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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