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2026-07-16 - 01:24
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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 Wed Jul 15, 2026 12:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491650,4ptp4l0-21swapper/207:28:382
24697996231,3cyclictest41-21ksoftirqd/310:15:203
24697996231,3cyclictest41-21ksoftirqd/310:15:203
24697996122,4cyclictest41-21ksoftirqd/307:50:013
24697996025,8cyclictest41-21ksoftirqd/312:21:223
179372600,5sleep117941-21cpuspeed_turbos08:05:141
134491600,4ptp4l0-21swapper/112:20:131
134491600,3ptp4l25-21ksoftirqd/109:30:141
134491570,4ptp4l0-21swapper/209:25:212
134491570,4ptp4l0-21swapper/208:59:052
24697995621,3cyclictest41-21ksoftirqd/307:14:093
134491560,4ptp4l0-21swapper/210:30:222
134491560,4ptp4l0-21swapper/107:40:401
24697995524,4cyclictest41-21ksoftirqd/307:35:123
24697995524,3cyclictest41-21ksoftirqd/309:23:493
24697995523,4cyclictest41-21ksoftirqd/309:58:093
24697995522,4cyclictest41-21ksoftirqd/310:51:483
24697995520,8cyclictest41-21ksoftirqd/312:19:593
134491550,4ptp4l0-21swapper/010:25:270
134491550,3ptp4l0-21swapper/210:11:492
24697995424,4cyclictest41-21ksoftirqd/307:31:283
24697995422,3cyclictest41-21ksoftirqd/311:50:183
24697995420,4cyclictest41-21ksoftirqd/309:16:373
24697995418,10cyclictest41-21ksoftirqd/310:32:263
134491540,3ptp4l0-21swapper/310:04:473
134491540,3ptp4l0-21swapper/207:05:202
24697995324,4cyclictest41-21ksoftirqd/311:30:393
24697995323,3cyclictest41-21ksoftirqd/307:43:423
24697995322,8cyclictest41-21ksoftirqd/311:40:253
134491530,4ptp4l0-21swapper/110:20:491
134491530,4ptp4l0-21swapper/007:53:360
134491530,17ptp4l25-21ksoftirqd/110:37:581
24697995223,4cyclictest41-21ksoftirqd/308:23:243
24697995221,8cyclictest41-21ksoftirqd/309:05:263
24697995221,8cyclictest41-21ksoftirqd/307:22:403
24697995218,7cyclictest41-21ksoftirqd/312:15:013
24697995216,10cyclictest41-21ksoftirqd/310:24:203
24697995215,9cyclictest41-21ksoftirqd/312:35:343
134491520,4ptp4l0-21swapper/212:38:172
134491520,4ptp4l0-21swapper/011:13:150
134491520,3ptp4l0-21swapper/310:49:543
134491520,3ptp4l0-21swapper/209:20:232
24697995121,4cyclictest41-21ksoftirqd/309:00:513
24697995118,9cyclictest41-21ksoftirqd/308:28:363
24697995118,4cyclictest41-21ksoftirqd/308:00:143
24697995116,10cyclictest41-21ksoftirqd/308:49:323
24697995116,10cyclictest41-21ksoftirqd/308:49:323
24697995115,8cyclictest41-21ksoftirqd/308:34:593
24697995112,7cyclictest41-21ksoftirqd/309:50:023
134491510,4ptp4l0-21swapper/307:19:313
134491510,3ptp4l0-21swapper/209:35:152
134491510,11ptp4l0-21swapper/011:05:250
24697995024,6cyclictest41-21ksoftirqd/308:07:513
2469799502,2cyclictest121rcu_preempt07:50:593
24697995020,4cyclictest41-21ksoftirqd/311:16:433
24697995015,3cyclictest41-21ksoftirqd/310:10:003
134491500,4ptp4l0-21swapper/208:31:062
134491500,3ptp4l0-21swapper/309:30:153
134491500,3ptp4l0-21swapper/212:19:342
134491500,3ptp4l0-21swapper/211:15:392
134491500,3ptp4l0-21swapper/210:15:392
134491500,3ptp4l0-21swapper/210:15:392
2469799493,2cyclictest121rcu_preempt10:10:583
24697994921,3cyclictest41-21ksoftirqd/311:55:173
24697994921,3cyclictest41-21ksoftirqd/307:55:213
24697994920,7cyclictest41-21ksoftirqd/308:40:263
24697994919,4cyclictest41-21ksoftirqd/311:00:243
134491490,4ptp4l0-21swapper/211:27:122
134491490,4ptp4l0-21swapper/110:42:511
134491490,3ptp4l0-21swapper/210:58:192
134491490,3ptp4l0-21swapper/207:10:382
24697994821,7cyclictest41-21ksoftirqd/308:15:233
24697994821,7cyclictest41-21ksoftirqd/308:15:233
24697994819,7cyclictest41-21ksoftirqd/311:25:153
24697994810,8cyclictest41-21ksoftirqd/308:12:003
134491480,4ptp4l0-21swapper/212:01:102
134491480,4ptp4l0-21swapper/208:35:322
134491480,3ptp4l0-21swapper/208:15:252
134491480,3ptp4l0-21swapper/208:15:252
134491480,3ptp4l0-21swapper/007:31:100
24697994719,6cyclictest41-21ksoftirqd/311:05:193
24697994716,7cyclictest41-21ksoftirqd/312:10:013
24697994713,8cyclictest41-21ksoftirqd/308:55:173
2469599472,43cyclictest0-21swapper/110:53:191
134491470,3ptp4l0-21swapper/209:15:312
134491470,3ptp4l0-21swapper/207:38:422
24697994616,3cyclictest41-21ksoftirqd/308:35:283
24697994610,7cyclictest41-21ksoftirqd/308:50:113
134491460,5ptp4l9-21ksoftirqd/007:47:590
134491460,4ptp4l0-21swapper/012:28:450
134491460,1ptp4l0-21swapper/011:25:410
134491460,11ptp4l0-21swapper/111:50:181
134491460,10ptp4l0-21swapper/108:58:421
2469799457,10cyclictest41-21ksoftirqd/312:27:163
24697994517,7cyclictest41-21ksoftirqd/310:57:503
2469799451,2cyclictest121rcu_preempt12:00:123
2469599452,2cyclictest0-21swapper/111:16:191
134491450,6ptp4l23477-21ntp_states07:05:250
134491450,4ptp4l14159-21apt-get12:35:141
134491450,3ptp4l121rcu_preempt12:10:241
134491450,10ptp4l0-21swapper/207:43:012
2469799444,8cyclictest41-21ksoftirqd/312:30:133
24697994435,3cyclictest41-21ksoftirqd/310:43:333
24697994417,6cyclictest41-21ksoftirqd/311:25:003
24697994414,7cyclictest41-21ksoftirqd/309:40:203
2469799441,2cyclictest121rcu_preempt11:35:173
134491440,8ptp4l0-21swapper/310:35:153
134491440,5ptp4l0-21swapper/011:40:210
134491440,5ptp4l0-21swapper/010:20:190
134491440,4ptp4l5706-21ls09:55:271
134491440,4ptp4l31788-21apt-get08:35:131
134491440,4ptp4l0-21swapper/309:45:253
134491440,4ptp4l0-21swapper/110:03:311
134491440,11ptp4l0-21swapper/010:30:260
134491440,10ptp4l0-21swapper/211:50:012
134491440,10ptp4l0-21swapper/207:19:332
2469799433,8cyclictest0-21swapper/311:13:513
2469799432,2cyclictest121rcu_preempt09:10:183
2469599432,39cyclictest0-21swapper/109:17:591
134491430,9ptp4l0-21swapper/012:06:490
134491430,5ptp4l0-21swapper/307:08:563
134491430,5ptp4l0-21swapper/211:45:032
134491430,4ptp4l0-21swapper/008:55:430
134491430,3ptp4l11645-21apt-get12:30:112
134491430,3ptp4l0-21swapper/212:21:132
134491430,3ptp4l0-21swapper/009:37:080
2469599422,38cyclictest0-21swapper/107:16:191
134491420,9ptp4l0-21swapper/008:53:310
134491420,5ptp4l27969-21meminfo07:15:200
134491420,5ptp4l0-21swapper/311:45:133
134491420,5ptp4l0-21swapper/011:16:370
134491420,4ptp4l7872-21users07:40:280
134491420,4ptp4l4700-21hddtemp_smartct08:45:182
134491420,4ptp4l4700-21hddtemp_smartct08:45:182
134491420,4ptp4l3887-21apt-get07:35:131
134491420,4ptp4l30290-21meminfo07:20:212
134491420,4ptp4l0-21swapper/210:00:262
134491420,3ptp4l0-21swapper/209:00:192
134491420,3ptp4l0-21swapper/108:44:551
134491420,2ptp4l0-21swapper/211:38:192
134491420,10ptp4l0-21swapper/207:50:522
134491420,10ptp4l0-21swapper/009:20:370
2469799414,2cyclictest121rcu_preempt07:26:533
134491410,6ptp4l0-21swapper/009:10:240
134491410,5ptp4l26145-21ls07:10:271
134491410,5ptp4l25892-21ps08:20:260
134491410,5ptp4l2469699cyclictest11:55:232
134491410,5ptp4l14086-21missed_timers07:55:230
134491410,5ptp4l13735-21awk12:35:000
134491410,5ptp4l0-21swapper/011:35:510
134491410,5ptp4l0-21swapper/011:00:160
134491410,5ptp4l0-21swapper/008:35:340
134491410,5ptp4l0-21swapper/008:17:060
134491410,5ptp4l0-21swapper/008:17:060
134491410,4ptp4l8581-21/usr/sbin/munin07:45:131
134491410,4ptp4l2878-21ntp_states08:40:242
134491410,4ptp4l25778-21iostat10:40:200
134491410,4ptp4l23837-21meminfo10:35:220
134491410,4ptp4l20548-21apt-get11:40:122
134491410,4ptp4l18300-21apt-get10:25:133
134491410,4ptp4l14362-21meminfo10:15:210
134491410,4ptp4l14362-21meminfo10:15:210
134491410,4ptp4l12954-21users11:20:290
134491410,4ptp4l0-21swapper/012:21:050
134491410,4ptp4l0-21swapper/010:57:170
134491410,4ptp4l0-21swapper/009:55:060
134491410,4ptp4l0-21swapper/008:34:110
134491410,3ptp4l530-21ls09:45:220
134491410,3ptp4l29770-21hddtemp_smartct07:20:160
134491410,3ptp4l11605-21hddtemp_smartct09:00:160
134491410,3ptp4l0-21swapper/009:50:060
134491410,10ptp4l0-21swapper/109:09:301
24697994034,4cyclictest41-21ksoftirqd/309:40:003
134491400,5ptp4l0-21swapper/107:05:571
134491400,5ptp4l0-21swapper/011:30:190
134491400,5ptp4l0-21swapper/010:45:380
134491400,4ptp4l6922-21latency_hist12:20:001
134491400,4ptp4l25047-21apt-get09:30:112
134491400,4ptp4l2107-21iostat07:30:192
134491400,4ptp4l0-21swapper/211:30:372
134491400,4ptp4l0-21swapper/211:00:252
134491400,4ptp4l0-21swapper/208:00:592
134491400,4ptp4l0-21swapper/112:33:451
134491400,4ptp4l0-21swapper/111:34:391
134491400,4ptp4l0-21swapper/110:45:281
134491400,4ptp4l0-21swapper/108:30:161
134491400,4ptp4l0-21swapper/107:50:181
134491400,4ptp4l0-21swapper/012:17:080
134491400,4ptp4l0-21swapper/012:04:170
134491400,4ptp4l0-21swapper/011:55:210
134491400,4ptp4l0-21swapper/010:06:140
134491400,4ptp4l0-21swapper/009:43:250
134491400,4ptp4l0-21swapper/009:25:230
134491400,4ptp4l0-21swapper/008:14:450
134491400,4ptp4l0-21swapper/008:00:160
134491400,4ptp4l0-21swapper/007:10:180
134491400,3ptp4l3954-21apt-config08:45:010
134491400,3ptp4l30774-21ntp_states09:40:232
134491400,3ptp4l30234-21hddtemp_smartct10:50:170
134491400,3ptp4l27503-21diskstats08:25:151
134491400,3ptp4l25239-21/usr/sbin/munin08:20:192
134491400,3ptp4l18715-21memory08:05:222
134491400,3ptp4l0-21swapper/208:50:302
134491400,2ptp4l19988-21kworker/2:012:11:492
24696993934,3cyclictest33-21ksoftirqd/208:12:172
134491390,5ptp4l0-21swapper/209:05:152
134491390,5ptp4l0-21swapper/107:25:151
134491390,5ptp4l0-21swapper/007:35:120
134491390,4ptp4l4768-21awk09:55:172
134491390,4ptp4l3336-21grep09:50:272
134491390,4ptp4l31844-21df07:25:130
134491390,4ptp4l19142-21irqstats10:25:201
134491390,4ptp4l17114-21awk09:10:261
134491390,4ptp4l15464-21chrt11:28:011
134491390,4ptp4l0-21swapper/309:25:143
134491390,4ptp4l0-21swapper/211:05:482
134491390,4ptp4l0-21swapper/210:41:572
134491390,4ptp4l0-21swapper/210:20:182
134491390,4ptp4l0-21swapper/210:05:362
134491390,4ptp4l0-21swapper/209:45:142
134491390,4ptp4l0-21swapper/209:10:272
134491390,4ptp4l0-21swapper/207:55:372
134491390,4ptp4l0-21swapper/112:25:121
134491390,4ptp4l0-21swapper/111:55:231
134491390,4ptp4l0-21swapper/111:14:121
134491390,4ptp4l0-21swapper/110:56:311
134491390,4ptp4l0-21swapper/110:17:471
134491390,4ptp4l0-21swapper/110:17:471
134491390,4ptp4l0-21swapper/110:05:181
134491390,4ptp4l0-21swapper/109:46:301
134491390,4ptp4l0-21swapper/109:40:291
134491390,4ptp4l0-21swapper/109:36:341
134491390,4ptp4l0-21swapper/109:00:151
134491390,4ptp4l0-21swapper/108:51:231
134491390,4ptp4l0-21swapper/108:45:151
134491390,4ptp4l0-21swapper/108:45:151
134491390,4ptp4l0-21swapper/108:14:221
134491390,4ptp4l0-21swapper/011:45:050
134491390,4ptp4l0-21swapper/010:12:390
134491390,4ptp4l0-21swapper/010:00:140
134491390,4ptp4l0-21swapper/009:05:270
134491390,4ptp4l0-21swapper/008:47:150
134491390,4ptp4l0-21swapper/008:47:150
134491390,4ptp4l0-21swapper/008:06:220
134491390,3ptp4l7617-21meminfo11:10:212
134491390,3ptp4l29804-21apt-get10:50:132
134491390,3ptp4l2019-21apt-get11:00:101
134491390,3ptp4l11708-21perl11:20:162
134491390,3ptp4l0-21swapper/210:25:292
134491390,3ptp4l0-21swapper/009:15:130
134491380,4ptp4l0-21swapper/212:25:152
134491380,4ptp4l0-21swapper/208:26:382
134491380,4ptp4l0-21swapper/207:45:162
134491380,4ptp4l0-21swapper/112:05:191
134491380,4ptp4l0-21swapper/112:00:011
134491380,4ptp4l0-21swapper/111:20:221
134491380,4ptp4l0-21swapper/110:30:231
134491380,4ptp4l0-21swapper/109:29:201
134491380,4ptp4l0-21swapper/108:20:201
134491380,4ptp4l0-21swapper/108:15:221
134491380,4ptp4l0-21swapper/108:15:221
134491380,4ptp4l0-21swapper/107:55:271
134491380,4ptp4l0-21swapper/012:10:220
134491380,3ptp4l28737-21sort08:25:290
134491380,3ptp4l0-21swapper/212:05:542
134491380,3ptp4l0-21swapper/210:45:182
134491380,3ptp4l0-21swapper/210:35:062
134491380,3ptp4l0-21swapper/111:47:521
134491380,3ptp4l0-21swapper/111:09:231
134491380,3ptp4l0-21swapper/110:10:251
134491380,3ptp4l0-21swapper/107:22:341
134491380,3ptp4l0-21swapper/011:50:190
134491370,4ptp4l0-21swapper/111:38:571
134491370,4ptp4l0-21swapper/109:50:141
134491370,4ptp4l0-21swapper/009:34:350
134491370,3ptp4l0-21swapper/111:40:251
134491370,3ptp4l0-21swapper/108:00:221
134491370,3ptp4l0-21swapper/107:33:131
134491370,3ptp4l0-21swapper/012:36:490
24695993226,4cyclictest25-21ksoftirqd/109:22:261
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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