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2026-08-17 - 01:14
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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 Sun Aug 16, 2026 12:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
439021750,6sleep10-21swapper/107:05:261
3137321390,6sleep1537899cyclictest11:34:171
134491600,5ptp4l5524-21cron08:20:002
134491600,4ptp4l30848-21ls10:20:280
134491600,4ptp4l30848-21ls10:20:280
134491590,4ptp4l0-21swapper/212:23:432
134491590,4ptp4l0-21swapper/212:13:272
134491590,4ptp4l0-21swapper/109:45:231
134491580,4ptp4l0-21swapper/109:36:471
134491580,3ptp4l0-21swapper/111:00:281
134491570,3ptp4l0-21swapper/207:57:322
134491560,4ptp4l20410-21sed11:10:140
134491540,4ptp4l0-21swapper/208:50:402
134491540,3ptp4l0-21swapper/211:26:182
134491540,3ptp4l0-21swapper/008:30:170
91112530,3sleep20-21swapper/210:45:202
5379995335,17cyclictest33-21ksoftirqd/210:55:002
5379995335,17cyclictest33-21ksoftirqd/210:55:002
134491530,3ptp4l0-21swapper/212:15:192
134491530,15ptp4l1301-21snmpd07:07:030
134491530,12ptp4l0-21swapper/108:06:251
134491520,4ptp4l0-21swapper/208:59:542
134491520,4ptp4l0-21swapper/007:14:300
134491520,3ptp4l8913-21irqrtprio09:35:180
134491520,16ptp4l25-21ksoftirqd/107:20:181
134491510,4ptp4l0-21swapper/312:13:593
134491510,4ptp4l0-21swapper/310:24:273
134491510,4ptp4l0-21swapper/310:24:273
134491510,4ptp4l0-21swapper/212:30:382
134491510,4ptp4l0-21swapper/211:19:012
134491510,4ptp4l0-21swapper/208:40:362
134491510,4ptp4l0-21swapper/207:52:462
134491510,4ptp4l0-21swapper/012:22:520
134491510,4ptp4l0-21swapper/009:19:120
134491510,3ptp4l0-21swapper/207:32:222
134491510,3ptp4l0-21swapper/009:47:030
5379995020,4cyclictest33-21ksoftirqd/208:10:142
134491500,4ptp4l0-21swapper/212:01:252
134491500,4ptp4l0-21swapper/211:46:482
134491500,4ptp4l0-21swapper/210:00:112
134491500,4ptp4l0-21swapper/209:45:082
134491500,4ptp4l0-21swapper/209:39:242
134491500,4ptp4l0-21swapper/209:09:532
134491500,4ptp4l0-21swapper/111:12:591
134491500,4ptp4l0-21swapper/011:20:210
134491500,4ptp4l0-21swapper/011:20:210
134491500,3ptp4l0-21swapper/211:02:592
134491500,3ptp4l0-21swapper/108:17:161
134491490,8ptp4l241ktimersoftd/111:35:131
134491490,4ptp4l0-21swapper/311:53:133
134491490,4ptp4l0-21swapper/209:32:172
134491490,4ptp4l0-21swapper/209:17:252
134491490,4ptp4l0-21swapper/209:04:102
134491490,4ptp4l0-21swapper/109:57:161
134491490,3ptp4l0-21swapper/108:03:341
134491490,15ptp4l23770-21/usr/sbin/munin08:55:281
134491490,11ptp4l0-21swapper/012:25:220
5379994820,7cyclictest33-21ksoftirqd/208:45:462
134491480,8ptp4l0-21swapper/111:40:221
134491480,4ptp4l0-21swapper/308:32:563
134491480,4ptp4l0-21swapper/211:41:422
134491480,4ptp4l0-21swapper/112:15:081
134491480,4ptp4l0-21swapper/108:47:091
134491480,4ptp4l0-21swapper/008:19:510
134491480,3ptp4l0-21swapper/212:07:032
134491480,3ptp4l0-21swapper/012:07:240
134491480,3ptp4l0-21swapper/007:39:160
134491480,10ptp4l41-21ksoftirqd/308:51:263
134491470,4ptp4l0-21swapper/312:19:333
134491470,4ptp4l0-21swapper/007:55:200
134491470,3ptp4l0-21swapper/312:20:183
134491470,3ptp4l0-21swapper/210:57:062
134491470,14ptp4l0-21swapper/312:30:133
134491470,10ptp4l0-21swapper/108:44:311
537999462,2cyclictest121rcu_preempt08:05:232
5379994615,3cyclictest33-21ksoftirqd/211:53:502
5379994613,5cyclictest33-21ksoftirqd/211:59:032
5379994613,4cyclictest33-21ksoftirqd/207:10:272
134491460,3ptp4l0-21swapper/112:39:221
134491460,3ptp4l0-21swapper/007:20:160
134491460,12ptp4l0-21swapper/108:10:281
5379994533,10cyclictest33-21ksoftirqd/208:25:282
5379994518,7cyclictest33-21ksoftirqd/210:33:182
5379994511,5cyclictest33-21ksoftirqd/209:40:152
5379994511,4cyclictest33-21ksoftirqd/212:25:422
134491450,4ptp4l30755-21apt-get08:05:033
134491450,4ptp4l0-21swapper/110:05:421
134491450,4ptp4l0-21swapper/109:26:211
134491450,4ptp4l0-21swapper/010:57:330
134491450,4ptp4l0-21swapper/009:53:500
134491450,1ptp4l0-21swapper/108:26:251
134491450,10ptp4l0-21swapper/210:05:362
5379994439,3cyclictest33-21ksoftirqd/208:05:002
537999443,7cyclictest0-21swapper/208:36:282
5379994417,6cyclictest33-21ksoftirqd/211:07:222
5379994417,6cyclictest33-21ksoftirqd/207:22:482
5379994416,5cyclictest33-21ksoftirqd/209:10:462
537999440,2cyclictest121rcu_preempt12:39:592
134491440,7ptp4l0-21swapper/308:38:113
134491440,3ptp4l0-21swapper/307:25:483
134491440,3ptp4l0-21swapper/109:05:331
134491440,2ptp4l0-21swapper/111:45:341
5379994337,3cyclictest33-21ksoftirqd/207:20:002
5379994313,3cyclictest33-21ksoftirqd/210:21:432
5379994313,3cyclictest33-21ksoftirqd/210:21:432
134491430,9ptp4l0-21swapper/207:26:042
134491430,8ptp4l0-21swapper/211:34:412
134491430,5ptp4l16653-21ntp_states11:00:250
134491430,4ptp4l31751-21apt-get10:25:132
134491430,4ptp4l2910-21ls09:20:270
134491430,3ptp4l0-21swapper/307:17:483
134491430,3ptp4l0-21swapper/110:14:221
134491430,3ptp4l0-21swapper/110:00:161
134491430,3ptp4l0-21swapper/107:18:251
5379994214,7cyclictest33-21ksoftirqd/210:38:002
537999420,3cyclictest121rcu_preempt11:12:552
537999420,2cyclictest121rcu_preempt07:36:402
134491420,9ptp4l0-21swapper/210:19:002
134491420,9ptp4l0-21swapper/207:43:112
134491420,8ptp4l0-21swapper/209:25:462
134491420,6ptp4l0-21swapper/008:09:090
134491420,5ptp4l12988-21diskstats08:35:150
134491420,5ptp4l0-21swapper/311:15:173
134491420,4ptp4l2318-21gnome-shell11:25:590
134491420,4ptp4l10387-21apt-get08:30:131
134491420,4ptp4l0-21swapper/311:20:233
134491420,4ptp4l0-21swapper/311:20:233
134491420,3ptp4l2318-21gnome-shell11:26:591
134491420,3ptp4l0-21swapper/107:55:001
134491420,10ptp4l0-21swapper/009:03:350
5379994135,4cyclictest33-21ksoftirqd/209:20:152
5379994135,3cyclictest33-21ksoftirqd/207:45:172
537999412,2cyclictest121rcu_preempt09:50:272
134491410,5ptp4l6581-21/usr/sbin/munin11:50:170
134491410,5ptp4l10764-21df09:40:140
134491410,5ptp4l0-21swapper/012:35:280
134491410,5ptp4l0-21swapper/008:40:010
134491410,4ptp4l4310-21df_inode10:35:171
134491410,4ptp4l31924-21iostat09:15:181
134491410,4ptp4l29454-21apt-get10:20:141
134491410,4ptp4l29454-21apt-get10:20:141
134491410,4ptp4l2318-21gnome-shell10:05:580
134491410,4ptp4l20104-21df_inode08:50:150
134491410,4ptp4l19443-21apt-get07:40:113
134491410,4ptp4l14153-21ls10:55:201
134491410,4ptp4l13110-21hddtemp_smartct08:35:171
134491410,4ptp4l0-21swapper/108:20:251
134491410,3ptp4l9577-21meminfo10:45:230
134491410,3ptp4l6743-21meminfo08:20:230
134491410,3ptp4l0-21swapper/109:53:341
134491410,3ptp4l0-21swapper/011:57:130
134491410,3ptp4l0-21swapper/010:13:580
134491410,3ptp4l0-21swapper/008:13:380
5380994035,3cyclictest41-21ksoftirqd/310:00:013
5379994034,3cyclictest33-21ksoftirqd/211:35:262
5377994035,3cyclictest9-21ksoftirqd/010:20:000
5377994035,3cyclictest9-21ksoftirqd/007:20:000
134491400,5ptp4l25206-21sed12:30:131
134491400,5ptp4l0-21swapper/307:12:243
134491400,5ptp4l0-21swapper/209:55:362
134491400,5ptp4l0-21swapper/107:30:181
134491400,5ptp4l0-21swapper/107:26:001
134491400,4ptp4l7056-21ntp_states09:30:241
134491400,4ptp4l6912-21ls07:10:281
134491400,4ptp4l4569-21iostat10:35:200
134491400,4ptp4l29494-21hddtemp_smartct09:10:160
134491400,4ptp4l27486-21ntpq07:55:231
134491400,4ptp4l19743-21apt-get10:00:010
134491400,4ptp4l18457-21memory08:45:210
134491400,4ptp4l14500-21ntp_states12:05:241
134491400,4ptp4l0-21swapper/208:22:022
134491400,4ptp4l0-21swapper/112:20:141
134491400,4ptp4l0-21swapper/111:55:161
134491400,4ptp4l0-21swapper/109:00:191
134491400,4ptp4l0-21swapper/107:45:061
134491400,4ptp4l0-21swapper/010:50:130
134491400,4ptp4l0-21swapper/010:50:130
134491400,4ptp4l0-21swapper/010:33:510
134491400,4ptp4l0-21swapper/010:26:410
134491400,4ptp4l0-21swapper/008:55:120
134491400,4ptp4l0-21swapper/007:46:250
134491400,3ptp4l14828-21df07:30:140
134491400,3ptp4l11989-21ntp_states12:00:251
134491400,3ptp4l11860-21ls10:50:211
134491400,3ptp4l11860-21ls10:50:211
134491400,3ptp4l0-21swapper/011:34:580
134491400,3ptp4l0-21swapper/009:29:340
134491400,3ptp4l0-21swapper/007:29:200
5380993934,3cyclictest41-21ksoftirqd/310:05:003
5380993934,3cyclictest41-21ksoftirqd/308:40:013
5379993934,3cyclictest33-21ksoftirqd/210:10:142
134491390,5ptp4l0-21swapper/311:49:083
134491390,5ptp4l0-21swapper/011:40:110
134491390,4ptp4l538099cyclictest12:00:053
134491390,4ptp4l30891-21apt-config08:05:000
134491390,4ptp4l0-21swapper/311:56:463
134491390,4ptp4l0-21swapper/310:50:593
134491390,4ptp4l0-21swapper/310:50:593
134491390,4ptp4l0-21swapper/310:25:453
134491390,4ptp4l0-21swapper/309:40:183
134491390,4ptp4l0-21swapper/308:27:333
134491390,4ptp4l0-21swapper/308:20:023
134491390,4ptp4l0-21swapper/307:57:313
134491390,4ptp4l0-21swapper/307:38:463
134491390,4ptp4l0-21swapper/211:21:572
134491390,4ptp4l0-21swapper/211:21:572
134491390,4ptp4l0-21swapper/210:40:192
134491390,4ptp4l0-21swapper/208:30:042
134491390,4ptp4l0-21swapper/111:50:151
134491390,4ptp4l0-21swapper/111:05:241
134491390,4ptp4l0-21swapper/110:40:151
134491390,4ptp4l0-21swapper/110:30:321
134491390,4ptp4l0-21swapper/110:15:301
134491390,4ptp4l0-21swapper/109:20:191
134491390,4ptp4l0-21swapper/012:30:510
134491390,4ptp4l0-21swapper/012:16:080
134491390,4ptp4l0-21swapper/012:11:030
134491390,4ptp4l0-21swapper/012:00:130
134491390,4ptp4l0-21swapper/011:45:170
134491390,4ptp4l0-21swapper/011:15:260
134491390,4ptp4l0-21swapper/011:05:150
134491390,4ptp4l0-21swapper/010:40:510
134491390,4ptp4l0-21swapper/009:55:150
134491390,4ptp4l0-21swapper/009:30:250
134491390,4ptp4l0-21swapper/007:44:530
134491390,3ptp4l5121-21ntp_states10:35:253
134491390,3ptp4l41-21ksoftirqd/309:20:253
134491390,3ptp4l32176-21hddtemp_smartct10:25:171
134491390,3ptp4l10862-21diskstats09:40:151
134491390,3ptp4l0-21swapper/107:37:261
538099384,5cyclictest18273-21hwlatdetect11:05:183
5380993833,3cyclictest41-21ksoftirqd/310:10:003
538099380,2cyclictest121rcu_preempt10:10:203
134491380,4ptp4l29336-21df_abs09:10:141
134491380,4ptp4l23053-21sort12:25:153
134491380,4ptp4l0-21swapper/312:37:413
134491380,4ptp4l0-21swapper/312:06:283
134491380,4ptp4l0-21swapper/310:55:093
134491380,4ptp4l0-21swapper/309:01:583
134491380,4ptp4l0-21swapper/308:48:353
134491380,4ptp4l0-21swapper/308:01:463
134491380,4ptp4l0-21swapper/307:50:023
134491380,4ptp4l0-21swapper/307:46:323
134491380,4ptp4l0-21swapper/307:33:043
134491380,4ptp4l0-21swapper/111:20:171
134491380,4ptp4l0-21swapper/111:20:171
134491380,4ptp4l0-21swapper/111:15:311
134491380,4ptp4l0-21swapper/110:45:161
134491380,4ptp4l0-21swapper/009:05:340
134491380,4ptp4l0-21swapper/008:25:270
134491380,4ptp4l0-21swapper/007:51:160
134491380,3ptp4l20741-21ls08:50:201
134491380,3ptp4l20422-21sed07:40:201
134491380,3ptp4l0-21swapper/311:01:593
134491380,3ptp4l0-21swapper/310:40:133
134491380,3ptp4l0-21swapper/310:31:533
134491380,3ptp4l0-21swapper/309:36:323
134491380,3ptp4l0-21swapper/307:21:133
134491380,3ptp4l0-21swapper/112:25:181
134491380,3ptp4l0-21swapper/112:14:251
5380993731,3cyclictest41-21ksoftirqd/309:30:003
134491370,4ptp4l0-21swapper/311:12:453
134491370,4ptp4l0-21swapper/308:17:453
134491370,3ptp4l0-21swapper/311:39:223
134491370,3ptp4l0-21swapper/310:48:233
134491370,3ptp4l0-21swapper/308:11:453
134491370,3ptp4l0-21swapper/011:35:580
5380993631,3cyclictest41-21ksoftirqd/309:52:343
5380993630,4cyclictest41-21ksoftirqd/311:29:423
134491360,3ptp4l0-21swapper/311:31:463
134491360,3ptp4l0-21swapper/310:19:043
134491360,3ptp4l0-21swapper/309:47:063
134491360,3ptp4l0-21swapper/309:33:183
134491350,3ptp4l0-21swapper/311:41:513
5380993429,3cyclictest41-21ksoftirqd/309:15:193
134491340,4ptp4l0-21swapper/308:58:493
134491330,3ptp4l0-21swapper/309:12:143
134491330,3ptp4l0-21swapper/309:08:473
137891233,13phc2sys3996-21/usr/sbin/munin07:05:213
36132165,6sleep20-21swapper/207:05:202
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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