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2026-06-17 - 17:31
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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 Wed Jun 17, 2026 12:45:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3212299728,61cyclictest27683-21cut11:40:010
3212299718,59cyclictest11274-21idleruntime-cro08:45:000
3212299697,26cyclictest0-21swapper/008:00:150
3212299689,56cyclictest22359-21/usr/sbin/munin12:35:240
32122996812,16cyclictest1317-21runrttasks08:29:000
32122996711,16cyclictest1317-21runrttasks07:37:130
171912670,4sleep23212499cyclictest08:55:212
3212499661,30cyclictest11371-21awk11:05:012
32122996612,17cyclictest1317-21runrttasks12:08:400
32122996514,14cyclictest15517-21taskset08:51:120
32122996513,17cyclictest20159-21sed11:20:270
32122996512,16cyclictest1317-21runrttasks10:19:440
32122996512,11cyclictest1317-21runrttasks10:43:030
32122996512,11cyclictest1317-21runrttasks07:51:570
32122996413,10cyclictest10993-21seq11:00:520
32122996411,15cyclictest1317-21runrttasks11:11:230
32122996411,11cyclictest1317-21runrttasks10:10:290
3212299635,18cyclictest0-21swapper/007:55:150
32122996314,10cyclictest4107-21seq11:57:000
134491630,5ptp4l0-21swapper/310:15:123
32122996214,11cyclictest4306-21taskset10:48:430
32122996213,14cyclictest6360-21taskset10:50:350
134491620,17ptp4l12670-21ls12:15:193
32122996113,14cyclictest10894-21taskset07:32:530
134491610,5ptp4l0-21swapper/108:10:181
32122996014,10cyclictest8569-21taskset07:27:320
32122996013,12cyclictest24827-21taskset09:11:490
32122996012,11cyclictest17992-21taskset08:58:300
32122996012,10cyclictest20715-21seq09:05:020
134491600,4ptp4l0-21swapper/107:15:131
134491600,17ptp4l0-21swapper/309:30:293
32122995912,11cyclictest6497-21taskset12:02:550
32122995912,11cyclictest18302-21taskset12:29:000
32122995911,11cyclictest29447-21seq09:21:550
3212299587,16cyclictest10490-21cat09:50:250
32122995815,15cyclictest31557-21seq08:16:360
32122995815,15cyclictest31557-21seq08:16:360
32122995814,17cyclictest27375-21taskset10:27:570
32122995813,10cyclictest1783-21taskset11:52:200
32122995811,7cyclictest31166-21ntp_states11:45:220
134491580,6ptp4l0-21swapper/207:05:032
134491580,4ptp4l0-21swapper/307:46:313
134491580,4ptp4l0-21swapper/107:24:551
134491580,3ptp4l0-21swapper/310:02:373
3212499578,6cyclictest0-21swapper/211:30:292
3212499574,10cyclictest13859-21grep10:00:132
134491570,3ptp4l0-21swapper/210:20:222
134491570,3ptp4l0-21swapper/011:30:220
3212499566,7cyclictest30115-21grep08:15:152
3212499566,7cyclictest30115-21grep08:15:152
3212499562,9cyclictest1-21systemd08:30:252
3212499561,14cyclictest5980-21/usr/sbin/munin10:50:262
3212499560,15cyclictest443-21rs:main2
3212299567,5cyclictest134491ptp4l08:05:160
32122995615,14cyclictest17739-21seq07:47:030
134491560,3ptp4l0-21swapper/310:48:033
134491560,3ptp4l0-21swapper/011:15:210
3212499558,6cyclictest0-21swapper/212:15:262
3212499553,17cyclictest212-21systemd-journal09:02:462
32122995516,15cyclictest24694-21taskset10:20:430
32122995514,11cyclictest2579-21sshd07:15:160
32122995511,9cyclictest27243-21seq09:18:220
134491550,4ptp4l0-21swapper/108:25:311
134491550,4ptp4l0-21swapper/108:23:391
134491550,3ptp4l0-21swapper/112:08:321
134491550,3ptp4l0-21swapper/107:36:231
3212499547,11cyclictest0-21swapper/209:15:252
3212499542,8cyclictest0-21swapper/211:25:232
3212299547,11cyclictest30417-21basename09:25:140
32122995416,17cyclictest1695-21taskset08:21:340
32122995415,14cyclictest8808-21taskset09:49:180
32122995414,8cyclictest22862-21taskset11:29:430
32122995413,37cyclictest4821-21df_inode09:40:120
32122995411,15cyclictest1317-21runrttasks07:20:480
134491540,4ptp4l0-21swapper/111:38:221
134491540,4ptp4l0-21swapper/110:03:511
134491540,3ptp4l0-21swapper/111:08:041
3212499536,6cyclictest0-21swapper/211:20:182
3212499536,6cyclictest0-21swapper/209:50:172
32122995316,18cyclictest13202-21seq09:56:530
32122995316,16cyclictest8843-21seq08:39:070
134491530,5ptp4l0-21swapper/107:10:001
134491530,4ptp4l0-21swapper/111:16:391
134491530,4ptp4l0-21swapper/108:46:211
3212499522,14cyclictest16380-21df11:15:132
3212499521,17cyclictest16031-21grep10:05:132
3212499520,11cyclictest20861-21sort09:05:122
32122995216,16cyclictest29305-21taskset08:12:110
32122995216,16cyclictest15488-21seq07:42:380
32122995214,17cyclictest11389-21taskset12:14:020
32122995214,16cyclictest4548-21seq08:30:040
134491520,4ptp4l0-21swapper/309:10:013
3212499515,5cyclictest0-21swapper/209:10:142
32122995115,18cyclictest1625-21taskset07:12:520
32122995115,15cyclictest8975-21taskset10:59:390
134491510,4ptp4l0-21swapper/309:27:513
134491510,4ptp4l0-21swapper/110:41:381
3212499506,5cyclictest0-21swapper/208:50:182
3212299501,9cyclictest0-21swapper/009:32:530
134491500,4ptp4l0-21swapper/108:40:421
134491500,10ptp4l29334-21apt-get07:05:013
3212499497,7cyclictest26931-21ssh10:25:272
3212499496,10cyclictest0-21swapper/207:35:232
32122994912,11cyclictest17914-21runrttasks10:08:100
134491490,4ptp4l0-21swapper/111:42:011
134491490,21ptp4l9849-21sh11:00:181
134491490,10ptp4l0-21swapper/107:42:591
3212499486,5cyclictest0-21swapper/208:35:252
3212499485,10cyclictest0-21swapper/209:40:132
3212499482,5cyclictest0-21swapper/209:30:172
3212499481,18cyclictest13228-21awk11:05:282
32122994813,16cyclictest13306-21runrttasks08:47:170
134491480,4ptp4l0-21swapper/311:57:213
134491480,1ptp4l0-21swapper/107:55:551
3212499476,6cyclictest0-21swapper/210:55:262
3212499474,6cyclictest0-21swapper/208:40:232
3212499472,5cyclictest0-21swapper/208:25:252
3212499471,6cyclictest33-21ksoftirqd/212:20:272
3212299479,9cyclictest0-21swapper/012:30:080
32122994714,17cyclictest20240-21taskset09:01:530
32122994712,7cyclictest13725-21apt-get10:00:110
3212599461,2cyclictest121rcu_preempt08:35:593
3212499466,11cyclictest0-21swapper/207:10:172
3212499463,10cyclictest0-21swapper/209:25:132
3212499461,12cyclictest0-21swapper/210:10:162
32122994610,16cyclictest15753-21taskset12:20:430
134491460,4ptp4l0-21swapper/309:45:423
134491460,4ptp4l0-21swapper/109:28:511
3212499456,12cyclictest0-21swapper/212:10:232
3212499452,12cyclictest31839-21apt-get08:20:022
3212499451,13cyclictest29318-21ls11:40:272
3212399452,42cyclictest0-21swapper/109:22:191
134491450,4ptp4l0-21swapper/309:19:463
134491450,4ptp4l0-21swapper/308:51:423
3212499443,5cyclictest0-21swapper/207:45:222
32122994411,13cyclictest27750-21apt-get11:40:120
134491440,2ptp4l0-21swapper/108:19:441
134491440,2ptp4l0-21swapper/108:19:441
3212499438,5cyclictest0-21swapper/211:55:162
3212499436,6cyclictest0-21swapper/212:35:152
3212499435,6cyclictest0-21swapper/207:25:142
3212499432,15cyclictest4044-21users10:45:282
3212499432,13cyclictest11485-21apt-get08:45:152
134491430,9ptp4l0-21swapper/010:34:250
134491430,5ptp4l0-21swapper/307:10:153
134491430,3ptp4l0-21swapper/110:46:521
134491430,10ptp4l0-21swapper/311:28:233
32125994237,3cyclictest41-21ksoftirqd/308:05:013
32125994236,3cyclictest41-21ksoftirqd/312:40:013
3212499428,5cyclictest0-21swapper/211:46:582
3212499426,26cyclictest15688-21latency_hist07:45:002
3212499420,6cyclictest10106-21ntpq07:30:222
32122994212,10cyclictest4230-21taskset09:39:470
134491420,5ptp4l0-21swapper/310:55:173
134491420,5ptp4l0-21swapper/308:45:153
134491420,4ptp4l6820-21apt-get09:45:122
134491420,4ptp4l11408-21apt-get09:55:112
134491420,4ptp4l0-21swapper/112:17:511
134491420,4ptp4l0-21swapper/110:21:171
134491420,4ptp4l0-21swapper/109:33:011
134491420,4ptp4l0-21swapper/108:51:291
134491420,4ptp4l0-21swapper/107:07:271
134491420,3ptp4l18851-21apt-get12:30:091
134491420,3ptp4l0-21swapper/310:53:583
32125994136,3cyclictest41-21ksoftirqd/312:00:213
32125994136,3cyclictest41-21ksoftirqd/310:44:593
32125994134,4cyclictest41-21ksoftirqd/310:35:123
3212499417,6cyclictest0-21swapper/211:50:162
3212499410,15cyclictest19625-21python07:50:242
3212399412,37cyclictest0-21swapper/110:33:391
32122994110,10cyclictest1317-21runrttasks11:07:180
134491410,5ptp4l14132-21cpuspeed12:20:131
134491410,5ptp4l0-21swapper/012:15:280
134491410,4ptp4l7983-21ntp_states08:35:221
134491410,4ptp4l4925-21df_inode12:00:161
134491410,4ptp4l2156-21apt-get09:35:122
134491410,4ptp4l1046-21ntp_states11:50:233
134491410,3ptp4l28593-21ls09:20:203
134491410,3ptp4l18226-21apt-get07:50:111
134491410,3ptp4l16963-21ls10:05:201
32125994035,3cyclictest41-21ksoftirqd/311:45:183
32125994035,3cyclictest41-21ksoftirqd/311:24:593
32125994034,3cyclictest41-21ksoftirqd/307:35:013
3212599402,6cyclictest41-21ksoftirqd/307:35:153
3212499406,6cyclictest0-21swapper/210:44:542
3212499403,5cyclictest33-21ksoftirqd/209:23:242
32122994012,14cyclictest30303-21df10:35:160
134491400,5ptp4l0-21swapper/310:30:143
134491400,5ptp4l0-21swapper/210:30:162
134491400,5ptp4l0-21swapper/007:08:350
134491400,4ptp4l18391-21apt-get09:00:143
134491400,4ptp4l0-21swapper/307:55:133
134491400,4ptp4l0-21swapper/207:15:232
134491400,4ptp4l0-21swapper/111:55:201
134491400,4ptp4l0-21swapper/111:52:281
134491400,4ptp4l0-21swapper/111:20:181
134491400,4ptp4l0-21swapper/110:50:191
134491400,4ptp4l0-21swapper/109:45:151
134491400,4ptp4l0-21swapper/109:20:001
134491400,4ptp4l0-21swapper/108:05:061
134491400,3ptp4l9321-21df09:50:131
134491400,3ptp4l31033-21ls10:35:212
134491400,3ptp4l27002-21ls10:25:273
134491400,3ptp4l24088-21meminfo11:30:191
134491400,3ptp4l0-21swapper/309:50:513
134491400,3ptp4l0-21swapper/308:12:073
134491400,3ptp4l0-21swapper/111:14:001
32125993936,2cyclictest41-21ksoftirqd/312:35:003
32125993934,3cyclictest41-21ksoftirqd/311:15:173
32125993934,3cyclictest41-21ksoftirqd/311:10:133
32125993934,3cyclictest41-21ksoftirqd/309:43:553
32125993934,3cyclictest41-21ksoftirqd/307:45:003
3212499392,23cyclictest0-21swapper/211:10:202
134491390,5ptp4l0-21swapper/308:15:153
134491390,5ptp4l0-21swapper/308:15:153
134491390,5ptp4l0-21swapper/110:15:111
134491390,4ptp4l0-21swapper/312:20:113
134491390,4ptp4l0-21swapper/311:30:143
134491390,4ptp4l0-21swapper/311:00:143
134491390,4ptp4l0-21swapper/309:55:273
134491390,4ptp4l0-21swapper/309:35:133
134491390,4ptp4l0-21swapper/212:27:272
134491390,4ptp4l0-21swapper/212:01:092
134491390,4ptp4l0-21swapper/210:16:232
134491390,4ptp4l0-21swapper/112:25:251
134491390,4ptp4l0-21swapper/109:35:271
134491390,4ptp4l0-21swapper/109:10:091
134491390,4ptp4l0-21swapper/109:05:211
134491390,4ptp4l0-21swapper/108:55:251
134491390,4ptp4l0-21swapper/108:01:131
134491390,4ptp4l0-21swapper/107:49:171
134491390,4ptp4l0-21swapper/107:30:391
134491390,3ptp4l5273-21irqstats07:20:182
134491390,3ptp4l30348-21df_inode11:45:131
32125993833,3cyclictest41-21ksoftirqd/311:40:183
32125993833,3cyclictest41-21ksoftirqd/310:20:133
3212399383,34cyclictest0-21swapper/110:27:181
134491380,5ptp4l3212399cyclictest08:30:131
134491380,5ptp4l0-21swapper/109:02:071
134491380,4ptp4l9817-21irqrtprio08:40:193
134491380,4ptp4l21250-21grep11:25:131
134491380,4ptp4l0-21swapper/312:26:203
134491380,4ptp4l0-21swapper/312:10:153
134491380,4ptp4l0-21swapper/312:06:133
134491380,4ptp4l0-21swapper/310:11:333
134491380,4ptp4l0-21swapper/309:05:233
134491380,4ptp4l0-21swapper/308:56:273
134491380,4ptp4l0-21swapper/308:09:053
134491380,4ptp4l0-21swapper/307:21:113
134491380,4ptp4l0-21swapper/307:15:233
134491380,4ptp4l0-21swapper/212:07:222
134491380,4ptp4l0-21swapper/211:39:112
134491380,4ptp4l0-21swapper/208:06:192
134491380,4ptp4l0-21swapper/112:37:131
134491380,4ptp4l0-21swapper/110:36:131
134491380,4ptp4l0-21swapper/110:10:111
134491380,4ptp4l0-21swapper/109:55:221
134491380,4ptp4l0-21swapper/109:43:341
134491380,3ptp4l16023-21apt-get10:05:133
134491380,3ptp4l0-21swapper/311:35:113
134491380,3ptp4l0-21swapper/308:28:403
134491380,3ptp4l0-21swapper/112:10:121
134491380,3ptp4l0-21swapper/107:25:151
32125993733,2cyclictest41-21ksoftirqd/307:27:243
3212499370,13cyclictest27919-21hddtemp_smartct08:10:172
134491370,4ptp4l0-21swapper/308:34:063
134491370,4ptp4l0-21swapper/307:53:513
134491370,4ptp4l0-21swapper/212:33:162
134491370,4ptp4l0-21swapper/208:02:172
134491370,4ptp4l0-21swapper/110:56:431
134491370,3ptp4l0-21swapper/308:20:173
134491350,3ptp4l0-21swapper/311:06:293
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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