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2026-06-10 - 18:33
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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 376 highest latencies:
System rackdslot1.osadl.org (updated Wed Jun 10, 2026 12:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1103621530,7sleep03066499cyclictest11:05:160
3066699747,21cyclictest3302-21date10:50:012
30665996824,4cyclictest25-21ksoftirqd/109:20:231
30665996628,10cyclictest25-21ksoftirqd/109:05:001
240052650,5sleep20-21swapper/208:05:132
3066699642,29cyclictest12489-21taskset12:16:272
30665996432,3cyclictest25-21ksoftirqd/111:25:001
30664996420,4cyclictest9-21ksoftirqd/012:20:010
30665996333,4cyclictest25-21ksoftirqd/110:10:191
30665996331,4cyclictest25-21ksoftirqd/109:05:121
3066699610,3cyclictest9684-21switchtime11:00:252
30665996131,4cyclictest25-21ksoftirqd/111:47:091
30665996127,4cyclictest25-21ksoftirqd/108:55:011
134491610,4ptp4l30083-21cat08:15:280
30665996025,9cyclictest25-21ksoftirqd/112:20:001
30665995928,4cyclictest25-21ksoftirqd/111:10:121
30665995919,9cyclictest25-21ksoftirqd/110:35:001
3066699582,18cyclictest0-21swapper/208:40:152
3066699580,4cyclictest32417-21sed08:20:272
30665995825,9cyclictest25-21ksoftirqd/110:50:011
30665995825,4cyclictest25-21ksoftirqd/110:30:181
30664995831,3cyclictest13660-21kworker/0:007:47:440
30664995829,4cyclictest14582-21kworker/0:010:17:240
30664995828,3cyclictest9-21ksoftirqd/007:40:150
30664995827,3cyclictest9-21ksoftirqd/007:10:250
134491580,4ptp4l0-21swapper/211:20:162
134491580,4ptp4l0-21swapper/012:32:210
30665995727,3cyclictest25-21ksoftirqd/112:10:271
30665995727,3cyclictest25-21ksoftirqd/108:12:171
30665995726,3cyclictest25-21ksoftirqd/107:40:141
30665995724,4cyclictest25-21ksoftirqd/109:15:231
30664995724,4cyclictest11525-21kworker/0:111:53:520
3066699560,4cyclictest14006-21ls07:40:262
30665995639,4cyclictest25-21ksoftirqd/109:50:001
30665995626,4cyclictest25-21ksoftirqd/107:10:251
30665995622,4cyclictest25-21ksoftirqd/110:09:261
30664995622,4cyclictest9-21ksoftirqd/011:20:000
134491560,4ptp4l0-21swapper/010:29:340
134491560,3ptp4l0-21swapper/010:55:130
30665995525,4cyclictest25-21ksoftirqd/108:35:191
30664995524,4cyclictest9-21ksoftirqd/008:10:180
30664995522,3cyclictest9-21ksoftirqd/008:35:000
134491550,4ptp4l0-21swapper/309:10:193
134491550,3ptp4l0-21swapper/012:04:340
134491550,3ptp4l0-21swapper/010:36:410
30665995438,3cyclictest25-21ksoftirqd/107:40:011
30665995424,4cyclictest25-21ksoftirqd/107:45:171
134491540,2ptp4l0-21swapper/007:33:150
3066699532,20cyclictest134691getstats11:17:192
30665995323,3cyclictest25-21ksoftirqd/109:40:331
30664995323,3cyclictest9-21ksoftirqd/010:20:180
30664995322,4cyclictest9-21ksoftirqd/008:45:170
134491530,5ptp4l0-21swapper/011:04:400
134491530,4ptp4l0-21swapper/310:21:263
134491530,4ptp4l0-21swapper/009:59:340
134491530,3ptp4l0-21swapper/112:05:251
134491530,3ptp4l0-21swapper/112:05:251
30664995225,3cyclictest14582-21kworker/0:010:52:220
30664995220,4cyclictest11525-21kworker/0:111:22:400
134491520,4ptp4l0-21swapper/311:38:573
134491520,3ptp4l0-21swapper/111:38:131
3066599517,6cyclictest25-21ksoftirqd/111:02:011
30665995133,4cyclictest25-21ksoftirqd/111:55:201
30664995124,3cyclictest9-21ksoftirqd/007:55:000
134491510,4ptp4l0-21swapper/109:37:001
134491510,4ptp4l0-21swapper/010:04:280
134491510,3ptp4l0-21swapper/011:35:350
3066699500,2cyclictest19327-21apt-get07:55:112
134491500,5ptp4l0-21swapper/008:25:080
134491500,11ptp4l30252-21sshd07:08:301
30665994928,6cyclictest25-21ksoftirqd/108:00:011
3066599492,3cyclictest25-21ksoftirqd/110:50:191
3066599491,3cyclictest25-21ksoftirqd/110:25:011
30664994921,3cyclictest9-21ksoftirqd/009:40:240
30664994917,3cyclictest9-21ksoftirqd/009:35:110
30664994915,3cyclictest9-21ksoftirqd/010:40:260
134491490,8ptp4l0-21swapper/011:28:130
134491490,4ptp4l0-21swapper/011:58:160
134491490,4ptp4l0-21swapper/011:40:490
134491490,4ptp4l0-21swapper/010:46:180
30664994836,3cyclictest9-21ksoftirqd/010:15:000
30664994820,3cyclictest9-21ksoftirqd/011:50:010
30664994818,4cyclictest9-21ksoftirqd/007:25:180
134491480,4ptp4l0-21swapper/309:54:323
134491480,4ptp4l0-21swapper/012:39:470
134491480,4ptp4l0-21swapper/012:39:460
31322470,1sleep33135-21grep07:20:143
30665994732,4cyclictest25-21ksoftirqd/107:30:011
30665994731,4cyclictest25-21ksoftirqd/111:35:001
30665994710,6cyclictest25-21ksoftirqd/111:25:171
30664994718,4cyclictest9-21ksoftirqd/012:20:120
30664994718,3cyclictest9-21ksoftirqd/012:10:180
30664994712,4cyclictest9-21ksoftirqd/009:05:160
134491470,4ptp4l0-21swapper/208:00:052
134491470,4ptp4l0-21swapper/112:36:011
134491470,4ptp4l0-21swapper/112:36:011
134491470,4ptp4l0-21swapper/108:42:281
134491470,4ptp4l0-21swapper/008:09:290
134491470,3ptp4l0-21swapper/008:05:000
134491470,12ptp4l32615-21switchtime09:30:242
30667994641,3cyclictest1317-21runrttasks11:30:233
30665994640,3cyclictest25-21ksoftirqd/110:20:001
30665994632,4cyclictest25-21ksoftirqd/109:55:011
30665994631,4cyclictest25-21ksoftirqd/111:15:121
30665994613,6cyclictest25-21ksoftirqd/108:25:001
3066499465,3cyclictest121rcu_preempt08:59:370
3066499464,4cyclictest9-21ksoftirqd/008:40:460
30664994637,4cyclictest14582-21kworker/0:010:09:190
30664994634,3cyclictest9-21ksoftirqd/009:10:150
30664994616,3cyclictest9-21ksoftirqd/011:10:150
30664994610,8cyclictest9-21ksoftirqd/012:29:590
3066599457,2cyclictest25-21ksoftirqd/109:14:551
3066599454,2cyclictest25-21ksoftirqd/107:50:251
30665994536,3cyclictest25-21ksoftirqd/108:07:121
30665994536,2cyclictest25-21ksoftirqd/108:00:161
3066599453,5cyclictest25-21ksoftirqd/109:25:241
30665994534,5cyclictest25-21ksoftirqd/107:16:301
30665994530,3cyclictest25-21ksoftirqd/110:25:251
30665994527,4cyclictest25-21ksoftirqd/112:25:231
3066599452,4cyclictest25-21ksoftirqd/111:05:151
3066599450,3cyclictest121rcu_preempt08:30:221
3066499455,3cyclictest9-21ksoftirqd/009:45:150
30664994532,4cyclictest9-21ksoftirqd/009:25:260
3066499452,4cyclictest121rcu_preempt09:51:400
134491450,9ptp4l0-21swapper/212:32:112
134491450,4ptp4l0-21swapper/009:30:290
134491450,3ptp4l33-21ksoftirqd/212:07:042
134491450,3ptp4l33-21ksoftirqd/212:07:042
134491450,3ptp4l0-21swapper/309:20:253
134491450,3ptp4l0-21swapper/110:56:131
134491450,10ptp4l0-21swapper/209:13:182
3066599444,2cyclictest25-21ksoftirqd/111:40:231
30665994431,3cyclictest25-21ksoftirqd/109:30:241
30665994428,3cyclictest25-21ksoftirqd/110:40:531
3066599442,6cyclictest25-21ksoftirqd/108:25:131
3066599442,2cyclictest121rcu_preempt10:00:011
30664994429,4cyclictest9-21ksoftirqd/009:00:240
3066499442,3cyclictest121rcu_preempt11:30:490
3066499442,2cyclictest121rcu_preempt07:21:280
30664994416,4cyclictest14582-21kworker/0:010:31:220
3066499440,41cyclictest14582-21kworker/0:009:21:190
134491440,9ptp4l0-21swapper/212:24:272
134491440,9ptp4l0-21swapper/210:29:422
134491440,9ptp4l0-21swapper/210:19:282
134491440,4ptp4l12881-21apt-get11:10:122
134491440,3ptp4l0-21swapper/108:47:341
3066699430,3cyclictest29099-21df10:35:142
30665994338,3cyclictest25-21ksoftirqd/107:25:011
30665994338,2cyclictest25-21ksoftirqd/108:20:001
30665994330,3cyclictest25-21ksoftirqd/110:00:191
30664994330,4cyclictest9-21ksoftirqd/012:05:290
30664994330,4cyclictest9-21ksoftirqd/012:05:290
134491430,9ptp4l0-21swapper/211:26:412
134491430,9ptp4l0-21swapper/210:42:002
134491430,9ptp4l0-21swapper/209:57:562
134491430,9ptp4l0-21swapper/209:54:342
134491430,9ptp4l0-21swapper/208:45:142
134491430,8ptp4l0-21swapper/209:41:262
134491430,5ptp4l29449-21ntp_states07:05:230
134491430,5ptp4l0-21swapper/312:05:303
134491430,5ptp4l0-21swapper/312:05:293
134491430,5ptp4l0-21swapper/007:15:260
134491430,4ptp4l27872-21ntp_states11:40:242
134491430,4ptp4l0-21swapper/008:21:210
30665994237,3cyclictest241ktimersoftd/108:55:151
30665994233,3cyclictest25-21ksoftirqd/112:23:271
30664994224,5cyclictest9-21ksoftirqd/007:55:150
30664994221,4cyclictest16714-21kworker/0:108:51:480
134491420,9ptp4l0-21swapper/210:56:352
134491420,5ptp4l25407-21ntp_states10:25:203
134491420,4ptp4l0-21swapper/311:25:193
134491420,3ptp4l1134-21apt-get09:35:103
3066699415,21cyclictest66652chrt08:35:262
3066699412,1cyclictest0-21swapper/208:13:592
3066699410,3cyclictest25697-21ps11:35:242
3066599412,2cyclictest25-21ksoftirqd/107:30:541
134491410,8ptp4l0-21swapper/212:27:382
134491410,5ptp4l0-21swapper/308:10:243
134491410,5ptp4l0-21swapper/211:48:212
134491410,5ptp4l0-21swapper/209:09:382
134491410,4ptp4l32308-21memory11:50:211
134491410,4ptp4l19934-21fschecks_time09:05:143
134491410,4ptp4l18336-21hddtemp_smartct12:30:161
134491410,4ptp4l0-21swapper/310:45:263
134491410,4ptp4l0-21swapper/308:22:423
134491410,4ptp4l0-21swapper/308:05:003
134491410,4ptp4l0-21swapper/210:33:162
134491410,4ptp4l0-21swapper/007:35:110
134491410,3ptp4l6827-21ls08:35:283
134491410,3ptp4l0-21swapper/008:35:340
30667994035,3cyclictest13371-21fschecks_count12:20:133
3066699400,3cyclictest28506-21taskset09:22:362
3066599400,6cyclictest25-21ksoftirqd/112:00:151
134491400,9ptp4l0-21swapper/210:10:452
134491400,5ptp4l0-21swapper/310:35:123
134491400,5ptp4l0-21swapper/211:08:392
134491400,5ptp4l0-21swapper/209:46:442
134491400,5ptp4l0-21swapper/208:50:502
134491400,4ptp4l29654-21ntp_states08:15:242
134491400,4ptp4l24552-21df09:15:130
134491400,4ptp4l0-21swapper/312:30:223
134491400,4ptp4l0-21swapper/312:15:223
134491400,4ptp4l0-21swapper/311:45:193
134491400,4ptp4l0-21swapper/311:22:373
134491400,4ptp4l0-21swapper/311:05:153
134491400,4ptp4l0-21swapper/310:43:043
134491400,4ptp4l0-21swapper/310:10:123
134491400,4ptp4l0-21swapper/310:00:143
134491400,4ptp4l0-21swapper/309:47:403
134491400,4ptp4l0-21swapper/309:30:343
134491400,4ptp4l0-21swapper/212:35:262
134491400,4ptp4l0-21swapper/212:35:262
134491400,4ptp4l0-21swapper/212:11:452
134491400,4ptp4l0-21swapper/212:00:172
134491400,4ptp4l0-21swapper/210:23:142
134491400,4ptp4l0-21swapper/210:06:192
134491400,4ptp4l0-21swapper/210:00:212
134491400,4ptp4l0-21swapper/209:35:122
134491400,4ptp4l0-21swapper/208:56:502
134491400,4ptp4l0-21swapper/208:25:102
134491400,4ptp4l0-21swapper/207:50:102
134491400,3ptp4l0-21swapper/207:30:162
30667993934,3cyclictest41-21ksoftirqd/308:00:013
134491390,5ptp4l0-21swapper/310:30:203
134491390,5ptp4l0-21swapper/211:30:172
134491390,4ptp4l5407-21ls12:00:273
134491390,4ptp4l443-21rs:main2
134491390,4ptp4l18251-21expr09:00:203
134491390,4ptp4l0-21swapper/312:10:133
134491390,4ptp4l0-21swapper/311:55:153
134491390,4ptp4l0-21swapper/311:15:193
134491390,4ptp4l0-21swapper/310:57:343
134491390,4ptp4l0-21swapper/310:06:583
134491390,4ptp4l0-21swapper/309:44:513
134491390,4ptp4l0-21swapper/307:50:263
134491390,4ptp4l0-21swapper/211:56:142
134491390,4ptp4l0-21swapper/210:50:262
134491390,4ptp4l0-21swapper/209:19:282
134491390,4ptp4l0-21swapper/208:31:142
134491390,4ptp4l0-21swapper/207:48:042
134491390,4ptp4l0-21swapper/207:17:272
134491390,4ptp4l0-21swapper/207:12:072
134491390,3ptp4l0-21swapper/312:25:273
30667993833,3cyclictest41-21ksoftirqd/312:35:413
30667993833,3cyclictest41-21ksoftirqd/312:35:413
30667993833,3cyclictest41-21ksoftirqd/309:00:013
134491380,5ptp4l0-21swapper/307:40:283
134491380,4ptp4l11543-21awk09:55:223
134491380,4ptp4l0-21swapper/311:40:263
134491380,4ptp4l0-21swapper/311:03:023
134491380,4ptp4l0-21swapper/309:25:213
134491380,4ptp4l0-21swapper/309:15:263
134491380,4ptp4l0-21swapper/308:45:183
134491380,4ptp4l0-21swapper/308:45:003
134491380,4ptp4l0-21swapper/308:08:343
134491380,4ptp4l0-21swapper/307:25:143
134491380,4ptp4l0-21swapper/211:52:242
134491380,4ptp4l0-21swapper/209:25:142
134491380,4ptp4l0-21swapper/209:01:102
134491380,4ptp4l0-21swapper/207:20:222
134491380,3ptp4l29516-21missed_timers08:15:223
46198370,2rtkit-daemon460-21rtkit-daemon07:18:043
30667993732,3cyclictest41-21ksoftirqd/310:50:103
134491370,3ptp4l8239-21irqrtprio07:30:193
134491360,3ptp4l0-21swapper/310:17:013
134491360,3ptp4l0-21swapper/207:35:212
30667993529,4cyclictest41-21ksoftirqd/307:35:193
134491350,4ptp4l0-21swapper/308:52:323
134491340,4ptp4l0-21swapper/308:30:193
134491340,4ptp4l0-21swapper/308:27:483
134491340,3ptp4l0-21swapper/311:11:273
134491340,2ptp4l14723-21/usr/sbin/munin07:45:153
134491340,1ptp4l0-21swapper/307:10:183
30667993227,3cyclictest41-21ksoftirqd/311:51:083
283222214,9sleep20-21swapper/207:05:132
283352173,7sleep30-21swapper/307:05:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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