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2026-06-20 - 15:38
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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 Sat Jun 20, 2026 12:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
780521670,2sleep00-21swapper/011:45:220
789221510,6sleep0775799cyclictest07:10:130
2545521430,4sleep0775799cyclictest08:55:200
46521240,3sleep3776099cyclictest11:30:213
775899694,63cyclictest15552-21kworker/1:211:03:491
7757996634,4cyclictest9-21ksoftirqd/010:55:010
7757996531,5cyclictest9-21ksoftirqd/009:40:290
7757996524,6cyclictest9-21ksoftirqd/009:45:160
7757996431,6cyclictest9-21ksoftirqd/012:10:160
7757996430,5cyclictest9-21ksoftirqd/010:45:000
775899623,57cyclictest15552-21kworker/1:209:19:291
7757996223,5cyclictest9-21ksoftirqd/012:20:150
7758996110,29cyclictest20897-21missed_timers08:45:211
7757996132,4cyclictest9-21ksoftirqd/010:45:160
7757996128,4cyclictest9-21ksoftirqd/012:05:000
7757996030,3cyclictest9-21ksoftirqd/009:35:280
7757996028,5cyclictest9-21ksoftirqd/010:35:270
7757995931,3cyclictest9-21ksoftirqd/009:10:000
7757995928,6cyclictest9-21ksoftirqd/008:15:200
7757995924,4cyclictest9-21ksoftirqd/007:30:180
775799588,3cyclictest9-21ksoftirqd/007:50:000
7757995827,5cyclictest9-21ksoftirqd/011:05:180
7757995820,5cyclictest9-21ksoftirqd/010:50:140
134491580,4ptp4l0-21swapper/309:22:173
7757995729,6cyclictest9-21ksoftirqd/009:25:190
134491570,4ptp4l0-21swapper/208:40:482
134491570,4ptp4l0-21swapper/012:30:160
134491570,4ptp4l0-21swapper/007:35:250
7757995621,6cyclictest9-21ksoftirqd/011:40:170
134491560,4ptp4l0-21swapper/207:51:432
134491560,3ptp4l0-21swapper/207:10:112
134491560,3ptp4l0-21swapper/110:48:161
134491560,3ptp4l0-21swapper/110:05:241
134491560,3ptp4l0-21swapper/009:31:160
134491560,12ptp4l0-21swapper/211:45:252
775799554,7cyclictest9-21ksoftirqd/008:50:270
775799553,5cyclictest3513-21idleruntime-cro09:19:590
7757995510,2cyclictest22547-21tr10:00:130
134491550,4ptp4l0-21swapper/211:04:562
134491550,4ptp4l0-21swapper/208:55:452
134491550,4ptp4l0-21swapper/207:16:452
134491550,3ptp4l0-21swapper/312:06:243
134491550,3ptp4l0-21swapper/312:06:243
134491540,4ptp4l0-21swapper/211:56:482
134491540,3ptp4l0-21swapper/211:12:122
134491540,3ptp4l0-21swapper/209:34:322
134491540,3ptp4l0-21swapper/208:23:502
134491540,3ptp4l0-21swapper/110:16:311
134491540,3ptp4l0-21swapper/107:59:191
134491540,3ptp4l0-21swapper/107:35:231
775799534,4cyclictest29063-21uname10:15:000
775799533,5cyclictest9-21ksoftirqd/010:10:000
7757995324,5cyclictest9-21ksoftirqd/007:25:250
7757995315,6cyclictest9-21ksoftirqd/008:45:230
775799530,3cyclictest17444-21sendmail-msp08:40:000
134491530,4ptp4l0-21swapper/207:44:492
134491530,12ptp4l0-21swapper/209:55:002
134491530,11ptp4l5728-21df_inode07:05:151
775799527,2cyclictest4592-21irqrtprio10:30:180
775799524,5cyclictest937-21dump-pmu-power08:04:590
775799524,5cyclictest9-21ksoftirqd/010:25:190
775799522,3cyclictest0-21swapper/010:15:220
134491520,5ptp4l0-21swapper/208:15:192
134491520,4ptp4l0-21swapper/207:34:572
134491520,3ptp4l0-21swapper/210:51:462
134491520,3ptp4l0-21swapper/209:11:182
7757995141,3cyclictest9-21ksoftirqd/007:20:220
775799513,7cyclictest9-21ksoftirqd/011:00:270
775799513,5cyclictest11469-21df_abs11:55:140
775799512,6cyclictest9-21ksoftirqd/011:20:240
775799512,5cyclictest12207-21dump-pmu-power07:19:590
7757995122,3cyclictest9-21ksoftirqd/007:55:280
134491510,4ptp4l0-21swapper/008:33:000
134491510,3ptp4l0-21swapper/212:06:022
134491510,3ptp4l0-21swapper/212:06:012
134491510,2ptp4l0-21swapper/212:10:162
775799506,6cyclictest9-21ksoftirqd/008:10:240
775799504,5cyclictest9-21ksoftirqd/011:10:240
775799503,4cyclictest22054-21grep07:40:140
7757995018,5cyclictest9-21ksoftirqd/008:40:180
7757995015,5cyclictest9-21ksoftirqd/012:25:250
134491500,4ptp4l0-21swapper/312:36:133
134491500,3ptp4l0-21swapper/307:42:163
776099493,3cyclictest16367-21sed08:35:233
775799495,7cyclictest9-21ksoftirqd/010:20:160
775799495,4cyclictest9-21ksoftirqd/008:20:170
775799494,7cyclictest10891-21latency_hist11:55:000
775799493,9cyclictest0-21swapper/012:15:140
775799492,6cyclictest9-21ksoftirqd/012:35:240
775799492,6cyclictest9-21ksoftirqd/011:20:000
134491490,4ptp4l0-21swapper/310:31:553
134491490,4ptp4l0-21swapper/308:53:313
134491490,4ptp4l0-21swapper/211:43:422
134491490,4ptp4l0-21swapper/207:09:472
134491490,3ptp4l0-21swapper/308:30:213
134491490,3ptp4l0-21swapper/210:31:182
134491490,3ptp4l0-21swapper/209:19:052
7760994836,10cyclictest41-21ksoftirqd/310:20:173
775799485,5cyclictest9-21ksoftirqd/011:35:180
775799484,7cyclictest0-21swapper/008:05:250
7757994820,6cyclictest9-21ksoftirqd/009:14:590
134491480,4ptp4l0-21swapper/308:12:403
134491480,3ptp4l0-21swapper/309:50:283
775799476,6cyclictest29877-21df11:25:130
775799473,6cyclictest9-21ksoftirqd/009:20:240
775799470,3cyclictest121rcu_preempt12:05:230
775799470,3cyclictest121rcu_preempt12:05:230
134491470,4ptp4l0-21swapper/310:15:143
134491470,11ptp4l0-21swapper/211:20:002
775799465,2cyclictest9-21ksoftirqd/007:50:140
775799464,8cyclictest9-21ksoftirqd/009:50:270
7757994640,3cyclictest32547-21ps11:30:190
775799463,2cyclictest9-21ksoftirqd/009:00:130
775799462,6cyclictest9-21ksoftirqd/008:25:150
134491460,4ptp4l0-21swapper/209:01:322
134491460,4ptp4l0-21swapper/111:51:361
134491460,3ptp4l0-21swapper/210:45:572
134491460,11ptp4l7492-21chrt09:25:293
775799452,6cyclictest9-21ksoftirqd/009:55:190
134491450,4ptp4l0-21swapper/212:34:062
134491450,4ptp4l0-21swapper/110:33:561
134491450,3ptp4l0-21swapper/209:43:142
7760994438,3cyclictest41-21ksoftirqd/307:20:003
775899440,3cyclictest1317-21runrttasks11:12:051
134491440,4ptp4l8472-21apt-get10:40:123
134491440,4ptp4l0-21swapper/207:49:132
134491440,4ptp4l0-21swapper/107:34:371
134491440,3ptp4l0-21swapper/210:18:072
134491440,2ptp4l121rcu_preempt12:04:332
134491440,10ptp4l0-21swapper/310:13:293
7760994336,4cyclictest41-21ksoftirqd/309:40:013
46198430,2rtkit-daemon460-21rtkit-daemon10:51:173
134491430,9ptp4l0-21swapper/209:51:592
134491430,4ptp4l20374-21hddtemp_smartct08:45:162
134491430,4ptp4l0-21swapper/309:19:073
134491430,4ptp4l0-21swapper/211:32:562
134491430,3ptp4l0-21swapper/207:24:282
134491430,3ptp4l0-21swapper/111:36:231
134491430,3ptp4l0-21swapper/110:02:001
134491430,3ptp4l0-21swapper/107:46:591
134491430,10ptp4l0-21swapper/109:56:391
7760994231,9cyclictest41-21ksoftirqd/311:50:283
134491420,9ptp4l0-21swapper/208:11:402
134491420,9ptp4l0-21swapper/112:18:201
134491420,8ptp4l0-21swapper/211:22:442
134491420,8ptp4l0-21swapper/210:06:012
134491420,4ptp4l13758-21ls08:30:192
134491420,4ptp4l0-21swapper/310:59:453
134491420,4ptp4l0-21swapper/210:12:172
134491420,4ptp4l0-21swapper/207:27:262
134491420,3ptp4l0-21swapper/107:54:351
134491420,2ptp4l0-21swapper/212:20:252
134491420,10ptp4l0-21swapper/108:29:111
134491410,5ptp4l14142-21/usr/sbin/munin07:20:283
134491410,5ptp4l0-21swapper/111:55:151
134491410,5ptp4l0-21swapper/108:15:161
134491410,4ptp4l29085-21ls12:30:273
134491410,4ptp4l27199-21df10:10:151
134491410,4ptp4l25339-21ls07:45:243
134491410,4ptp4l15633-21apt-get10:55:151
134491410,4ptp4l1178-21apt-get08:05:123
134491410,4ptp4l0-21swapper/308:48:463
134491410,4ptp4l0-21swapper/307:57:083
134491410,4ptp4l0-21swapper/211:05:562
134491410,4ptp4l0-21swapper/210:20:412
134491410,4ptp4l0-21swapper/209:20:182
134491410,4ptp4l0-21swapper/112:20:131
134491410,3ptp4l0-21swapper/209:36:022
134491410,3ptp4l0-21swapper/108:05:101
7760994035,3cyclictest41-21ksoftirqd/311:20:013
7760994035,3cyclictest1301-21snmpd11:13:223
7760994034,3cyclictest41-21ksoftirqd/310:25:303
7760994034,3cyclictest41-21ksoftirqd/309:00:193
134491400,9ptp4l0-21swapper/211:38:422
134491400,8ptp4l0-21swapper/208:53:512
134491400,8ptp4l0-21swapper/207:59:302
134491400,5ptp4l3988-21/usr/sbin/munin08:10:181
134491400,5ptp4l0-21swapper/307:25:203
134491400,5ptp4l0-21swapper/307:10:283
134491400,5ptp4l0-21swapper/107:20:121
134491400,5ptp4l0-21swapper/007:05:590
134491400,4ptp4l8740-21meminfo07:10:211
134491400,4ptp4l8624-21df_inode09:30:171
134491400,4ptp4l20602-21apt-get12:15:122
134491400,4ptp4l19071-21ntp_states11:00:243
134491400,4ptp4l14871-21apt-get08:35:031
134491400,4ptp4l13333-21df10:50:151
134491400,4ptp4l10513-21hddtemp_smartct07:15:161
134491400,4ptp4l0-21swapper/311:45:183
134491400,4ptp4l0-21swapper/311:35:123
134491400,4ptp4l0-21swapper/311:05:143
134491400,4ptp4l0-21swapper/310:08:193
134491400,4ptp4l0-21swapper/310:00:153
134491400,4ptp4l0-21swapper/308:40:133
134491400,4ptp4l0-21swapper/307:30:153
134491400,4ptp4l0-21swapper/211:25:262
134491400,4ptp4l0-21swapper/210:25:242
134491400,4ptp4l0-21swapper/208:25:262
134491400,4ptp4l0-21swapper/208:05:152
134491400,4ptp4l0-21swapper/208:00:292
134491400,4ptp4l0-21swapper/109:00:131
134491400,4ptp4l0-21swapper/108:20:151
134491400,3ptp4l23942-21ls12:20:223
134491400,3ptp4l22731-21irqstats07:40:201
134491400,3ptp4l20507-21ls07:35:202
134491400,3ptp4l15272-21apt-get09:45:102
134491400,3ptp4l0-21swapper/211:52:322
134491400,3ptp4l0-21swapper/210:37:452
134491400,2ptp4l241ktimersoftd/108:56:031
7760993934,3cyclictest41-21ksoftirqd/309:45:173
7760993934,3cyclictest41-21ksoftirqd/308:00:203
7760993933,3cyclictest41-21ksoftirqd/308:26:243
134491390,5ptp4l0-21swapper/110:21:591
134491390,4ptp4l9045-21iostat_ios10:40:181
134491390,4ptp4l6324-21diskstats09:25:171
134491390,4ptp4l30818-21users09:05:282
134491390,4ptp4l13031-21df08:30:141
134491390,4ptp4l0-21swapper/312:15:123
134491390,4ptp4l0-21swapper/311:55:263
134491390,4ptp4l0-21swapper/311:24:043
134491390,4ptp4l0-21swapper/310:35:233
134491390,4ptp4l0-21swapper/309:05:193
134491390,4ptp4l0-21swapper/308:55:233
134491390,4ptp4l0-21swapper/308:20:273
134491390,4ptp4l0-21swapper/308:15:123
134491390,4ptp4l0-21swapper/307:50:123
134491390,4ptp4l0-21swapper/210:02:142
134491390,4ptp4l0-21swapper/209:29:472
134491390,4ptp4l0-21swapper/208:35:262
134491390,4ptp4l0-21swapper/112:30:211
134491390,4ptp4l0-21swapper/112:11:181
134491390,4ptp4l0-21swapper/109:50:201
134491390,4ptp4l0-21swapper/109:45:151
134491390,4ptp4l0-21swapper/108:52:051
134491390,3ptp4l18615-21diskstats12:10:143
134491390,3ptp4l11943-21ntp_states10:45:233
134491390,3ptp4l10045-21ls10:40:262
7760993833,3cyclictest41-21ksoftirqd/309:40:213
775899380,4cyclictest5079-21irqstats11:40:211
134491380,5ptp4l0-21swapper/307:09:423
134491380,5ptp4l0-21swapper/212:35:132
134491380,5ptp4l0-21swapper/109:20:121
134491380,4ptp4l25-21ksoftirqd/109:40:191
134491380,4ptp4l0-21swapper/312:25:153
134491380,4ptp4l0-21swapper/311:40:053
134491380,4ptp4l0-21swapper/311:26:133
134491380,4ptp4l0-21swapper/309:55:593
134491380,4ptp4l0-21swapper/309:31:473
134491380,4ptp4l0-21swapper/309:10:173
134491380,4ptp4l0-21swapper/307:37:523
134491380,4ptp4l0-21swapper/210:55:262
134491380,4ptp4l0-21swapper/112:35:131
134491380,4ptp4l0-21swapper/112:25:071
134491380,4ptp4l0-21swapper/112:05:141
134491380,4ptp4l0-21swapper/112:05:141
134491380,4ptp4l0-21swapper/112:00:211
134491380,4ptp4l0-21swapper/111:45:211
134491380,4ptp4l0-21swapper/111:30:541
134491380,4ptp4l0-21swapper/111:20:191
134491380,4ptp4l0-21swapper/110:35:211
134491380,4ptp4l0-21swapper/109:10:201
134491380,4ptp4l0-21swapper/109:05:091
134491380,4ptp4l0-21swapper/108:40:171
134491380,4ptp4l0-21swapper/107:27:561
134491380,3ptp4l0-21swapper/312:00:173
134491380,3ptp4l0-21swapper/212:25:232
134491380,3ptp4l0-21swapper/109:35:271
134491370,4ptp4l0-21swapper/111:25:111
134491370,4ptp4l0-21swapper/111:06:291
134491370,4ptp4l0-21swapper/110:25:151
134491370,4ptp4l0-21swapper/108:00:061
134491360,3ptp4l0-21swapper/111:16:551
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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