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2026-07-18 - 18:54
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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 Sat Jul 18, 2026 12:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3255221400,3sleep20-21swapper/210:30:172
2803021400,5sleep2396999cyclictest08:00:212
134491670,4ptp4l0-21swapper/107:08:041
294872650,4sleep2396999cyclictest10:25:002
134491650,5ptp4l6836-21taskset11:53:573
134491650,5ptp4l6836-21taskset11:53:573
134491630,2ptp4l0-21swapper/107:37:511
134491610,4ptp4l0-21swapper/110:10:411
134491610,19ptp4l0-21swapper/009:55:250
134491590,3ptp4l0-21swapper/109:11:331
134491580,15ptp4l23651-21ls09:00:231
134491570,4ptp4l0-21swapper/009:25:020
134491570,3ptp4l0-21swapper/210:25:302
134491570,3ptp4l0-21swapper/108:30:231
134491560,3ptp4l0-21swapper/109:34:171
134691550,9getstats0-21swapper/311:29:113
134491550,4ptp4l0-21swapper/308:53:533
134491550,4ptp4l0-21swapper/308:53:533
134491550,3ptp4l0-21swapper/007:05:170
134491540,4ptp4l0-21swapper/109:58:171
134491540,4ptp4l0-21swapper/109:44:331
134491530,4ptp4l0-21swapper/211:22:292
134491530,3ptp4l0-21swapper/211:35:422
134491520,9ptp4l0-21swapper/208:13:022
134491520,5ptp4l0-21swapper/312:09:053
134491520,4ptp4l0-21swapper/307:59:573
134491510,4ptp4l0-21swapper/207:22:332
134491510,4ptp4l0-21swapper/109:18:431
134491510,4ptp4l0-21swapper/107:46:521
134491510,4ptp4l0-21swapper/107:31:231
134491510,12ptp4l0-21swapper/212:15:182
134491510,11ptp4l0-21swapper/010:30:190
134491500,4ptp4l15251-21/usr/sbin/munin09:50:281
134491500,4ptp4l0-21swapper/309:04:213
134491500,4ptp4l0-21swapper/209:37:242
134491500,4ptp4l0-21swapper/209:06:212
134491500,4ptp4l0-21swapper/112:12:501
134491500,4ptp4l0-21swapper/108:16:531
134491500,4ptp4l0-21swapper/108:16:531
134491500,3ptp4l0-21swapper/310:25:013
134491500,3ptp4l0-21swapper/108:20:421
134491500,2ptp4l0-21swapper/008:47:280
134491500,17ptp4l0-21swapper/307:26:593
134491490,4ptp4l0-21swapper/310:57:283
134491490,4ptp4l0-21swapper/310:57:283
134491490,4ptp4l0-21swapper/310:53:393
134491490,4ptp4l0-21swapper/208:57:292
134491490,4ptp4l0-21swapper/110:51:061
134491490,11ptp4l6277-21apt-key08:25:011
397099481,3cyclictest0-21swapper/307:23:263
134491480,4ptp4l0-21swapper/311:10:143
134491480,4ptp4l0-21swapper/207:39:152
134491480,4ptp4l0-21swapper/110:58:401
134491480,4ptp4l0-21swapper/110:58:401
134491480,4ptp4l0-21swapper/110:23:461
134491480,4ptp4l0-21swapper/108:39:531
134491480,3ptp4l0-21swapper/107:40:191
397099471,3cyclictest0-21swapper/308:31:223
3969994741,3cyclictest19081-21fschecks_count12:20:172
3969994716,28cyclictest20152-21ls11:10:282
134491470,5ptp4l0-21swapper/007:40:120
134491470,4ptp4l0-21swapper/111:25:461
134491470,4ptp4l0-21swapper/109:08:141
134491470,4ptp4l0-21swapper/010:08:400
134491470,3ptp4l0-21swapper/108:02:341
397099463,2cyclictest121rcu_preempt12:00:593
397099462,2cyclictest121rcu_preempt11:33:593
134491460,4ptp4l0-21swapper/112:24:241
134491460,4ptp4l0-21swapper/110:06:251
134491460,4ptp4l0-21swapper/108:41:021
134491460,3ptp4l0-21swapper/311:03:333
134491460,3ptp4l0-21swapper/310:40:033
134491460,3ptp4l0-21swapper/107:52:081
3970994532,9cyclictest41-21ksoftirqd/309:50:243
134491450,4ptp4l6293-21apt-get07:15:112
134491450,4ptp4l0-21swapper/309:06:563
134491450,3ptp4l0-21swapper/111:00:391
134491450,12ptp4l0-21swapper/110:37:151
397099449,4cyclictest41-21ksoftirqd/307:11:013
397099443,6cyclictest121rcu_preempt07:32:413
397099443,3cyclictest121rcu_preempt09:12:353
3970994411,4cyclictest41-21ksoftirqd/311:42:343
3969994414,28cyclictest0-21swapper/207:52:392
134691440,10getstats0-21swapper/310:45:133
134491440,8ptp4l0-21swapper/007:39:330
134491440,4ptp4l0-21swapper/212:01:052
134491440,4ptp4l0-21swapper/111:06:571
134491440,4ptp4l0-21swapper/008:19:330
134491440,4ptp4l0-21swapper/008:19:330
134491440,3ptp4l13262-21apt-get07:30:132
134491440,3ptp4l0-21swapper/210:44:542
134491440,11ptp4l0-21swapper/208:23:502
134491440,10ptp4l0-21swapper/207:11:452
46198430,10rtkit-daemon0-21swapper/307:40:553
397099435,3cyclictest121rcu_preempt09:39:393
3970994337,3cyclictest41-21ksoftirqd/312:40:003
397099433,3cyclictest121rcu_preempt10:20:403
3970994323,11cyclictest41-21ksoftirqd/310:30:273
3970994310,4cyclictest41-21ksoftirqd/311:49:263
3970994310,4cyclictest41-21ksoftirqd/311:49:263
134491430,9ptp4l0-21swapper/208:15:392
134491430,9ptp4l0-21swapper/208:15:392
134491430,9ptp4l0-21swapper/011:06:480
134491430,4ptp4l24760-21apt-get07:55:131
134491430,4ptp4l11106-21apt-get08:35:100
134491430,3ptp4l3952-21apt-get08:20:110
134491430,3ptp4l0-21swapper/108:51:141
134491430,3ptp4l0-21swapper/108:51:141
134491430,10ptp4l0-21swapper/210:37:042
134491430,10ptp4l0-21swapper/010:21:310
46198420,9rtkit-daemon0-21swapper/307:48:413
397099426,4cyclictest41-21ksoftirqd/308:45:003
3970994237,3cyclictest41-21ksoftirqd/308:55:263
397099423,3cyclictest121rcu_preempt12:22:343
397099422,3cyclictest121rcu_preempt12:27:123
397099421,3cyclictest121rcu_preempt08:18:033
397099421,3cyclictest121rcu_preempt08:18:033
3970994210,4cyclictest41-21ksoftirqd/308:27:453
134691420,10getstats0-21swapper/311:06:423
134491420,9ptp4l0-21swapper/210:05:432
134491420,9ptp4l0-21swapper/209:32:272
134491420,8ptp4l0-21swapper/110:00:491
134491420,5ptp4l16285-21apt-get11:05:122
134491420,5ptp4l0-21swapper/210:45:152
134491420,5ptp4l0-21swapper/210:18:042
134491420,5ptp4l0-21swapper/011:00:260
134491420,5ptp4l0-21swapper/008:40:210
134491420,4ptp4l7476-21memory08:25:210
134491420,4ptp4l4303-21df_inode07:10:160
134491420,4ptp4l30302-21iostat_ios09:15:180
134491420,4ptp4l12397-21ntp_states09:45:251
134491420,4ptp4l11840-21apt-get12:05:112
134491420,3ptp4l31674-21apt-get08:10:141
134491420,3ptp4l0-21swapper/007:51:190
134491420,10ptp4l0-21swapper/012:08:000
46198410,8rtkit-daemon41-21ksoftirqd/307:39:353
397099419,4cyclictest41-21ksoftirqd/312:33:263
397099416,3cyclictest41-21ksoftirqd/311:24:153
397099415,3cyclictest121rcu_preempt08:48:403
3970994136,2cyclictest41-21ksoftirqd/309:30:143
3970994135,3cyclictest41-21ksoftirqd/309:40:593
3970994135,3cyclictest41-21ksoftirqd/308:38:583
3970994135,3cyclictest41-21ksoftirqd/308:08:583
397099413,3cyclictest121rcu_preempt09:47:533
3970994112,3cyclictest41-21ksoftirqd/312:14:043
3970994111,6cyclictest41-21ksoftirqd/310:15:003
397099410,5cyclictest41-21ksoftirqd/309:20:283
397099410,3cyclictest121rcu_preempt12:15:173
397099410,3cyclictest121rcu_preempt11:18:523
397099410,2cyclictest121rcu_preempt11:36:373
134491410,9ptp4l0-21swapper/208:51:492
134491410,9ptp4l0-21swapper/208:51:492
134491410,9ptp4l0-21swapper/011:12:160
134491410,8ptp4l0-21swapper/207:49:002
134491410,7ptp4l0-21swapper/212:30:182
134491410,5ptp4l24363-21memory11:20:211
134491410,5ptp4l0-21swapper/210:55:132
134491410,5ptp4l0-21swapper/210:55:132
134491410,5ptp4l0-21swapper/108:55:191
134491410,5ptp4l0-21swapper/012:00:130
134491410,5ptp4l0-21swapper/011:55:210
134491410,5ptp4l0-21swapper/010:25:210
134491410,5ptp4l0-21swapper/010:00:200
134491410,5ptp4l0-21swapper/009:35:260
134491410,4ptp4l4567-21df_inode10:40:151
134491410,4ptp4l21664-21iostat_ios11:15:190
134491410,4ptp4l11394-21hddtemp_smartct07:25:150
134491410,4ptp4l0-21swapper/209:50:152
134491410,4ptp4l0-21swapper/012:35:050
134491410,3ptp4l30326-21meminfo08:05:200
134491410,3ptp4l26031-21memory10:15:220
134491410,3ptp4l2571-21apt-get11:45:142
134491410,3ptp4l2571-21apt-get11:45:142
134491410,3ptp4l22466-21apt-get07:50:123
134491410,3ptp4l14212-21meminfo07:30:210
134491410,3ptp4l10963-21apt-get07:25:112
134491410,2ptp4l0-21swapper/012:25:120
3970994036,2cyclictest41-21ksoftirqd/308:25:003
3970994035,3cyclictest41-21ksoftirqd/310:36:593
3970994034,3cyclictest41-21ksoftirqd/308:10:583
397099401,9cyclictest41-21ksoftirqd/310:00:043
134691400,9getstats0-21swapper/309:18:483
134491400,7ptp4l0-21swapper/209:46:352
134491400,5ptp4l0-21swapper/009:10:210
134491400,5ptp4l0-21swapper/008:50:170
134491400,5ptp4l0-21swapper/008:50:170
134491400,5ptp4l0-21swapper/007:20:220
134491400,4ptp4l25641-21iostat10:15:191
134491400,4ptp4l0-21swapper/212:36:412
134491400,4ptp4l0-21swapper/212:28:282
134491400,4ptp4l0-21swapper/208:25:172
134491400,4ptp4l0-21swapper/112:38:221
134491400,4ptp4l0-21swapper/110:34:491
134491400,4ptp4l0-21swapper/109:36:551
134491400,4ptp4l0-21swapper/109:25:171
134491400,4ptp4l0-21swapper/109:20:031
134491400,4ptp4l0-21swapper/107:15:481
134491400,4ptp4l0-21swapper/011:36:390
134491400,4ptp4l0-21swapper/010:45:080
134491400,4ptp4l0-21swapper/010:10:170
134491400,4ptp4l0-21swapper/009:44:430
134491400,4ptp4l0-21swapper/009:31:420
134491400,4ptp4l0-21swapper/009:08:010
134491400,4ptp4l0-21swapper/009:02:250
134491400,4ptp4l0-21swapper/008:00:260
134491400,4ptp4l0-21swapper/007:15:190
134491400,3ptp4l9547-21apt-get12:00:151
134491400,3ptp4l8975-21diskstats07:20:141
134491400,3ptp4l8439-21ps11:55:243
134491400,3ptp4l5185-21diskstats11:50:152
134491400,3ptp4l5185-21diskstats11:50:152
134491400,3ptp4l32615-21iostat09:20:180
134491400,3ptp4l32105-21hddtemp_smartct08:10:180
134491400,3ptp4l30645-21memory10:25:231
134491400,3ptp4l25085-21users11:20:280
134491400,3ptp4l17001-21iostat12:15:180
134491400,3ptp4l16287-21iostat08:45:161
46198390,9rtkit-daemon0-21swapper/309:57:023
3970993934,3cyclictest41-21ksoftirqd/309:28:593
3970993934,3cyclictest41-21ksoftirqd/308:00:243
134491390,4ptp4l20216-21timerandwakeup12:20:280
134491390,4ptp4l10736-21ls10:50:310
134491390,4ptp4l0-21swapper/211:25:112
134491390,4ptp4l0-21swapper/210:51:592
134491390,4ptp4l0-21swapper/210:10:012
134491390,4ptp4l0-21swapper/209:56:072
134491390,4ptp4l0-21swapper/208:48:082
134491390,4ptp4l0-21swapper/208:38:532
134491390,4ptp4l0-21swapper/208:08:252
134491390,4ptp4l0-21swapper/112:25:341
134491390,4ptp4l0-21swapper/111:57:211
134491390,4ptp4l0-21swapper/110:47:541
134491390,4ptp4l0-21swapper/108:05:291
134491390,4ptp4l0-21swapper/107:28:351
134491390,4ptp4l0-21swapper/107:13:231
134491390,4ptp4l0-21swapper/012:32:150
134491390,4ptp4l0-21swapper/011:30:110
134491390,4ptp4l0-21swapper/010:58:090
134491390,4ptp4l0-21swapper/010:58:090
134491390,4ptp4l0-21swapper/010:41:550
134491390,4ptp4l0-21swapper/010:35:270
134491390,4ptp4l0-21swapper/009:45:220
134491390,4ptp4l0-21swapper/008:55:120
134491390,4ptp4l0-21swapper/008:30:220
134491390,4ptp4l0-21swapper/007:56:140
134491390,4ptp4l0-21swapper/007:45:250
134491390,3ptp4l5084-21df11:50:141
134491390,3ptp4l5084-21df11:50:131
134491390,3ptp4l31248-21meminfo11:35:211
134491390,3ptp4l23571-21ls09:00:212
134491390,3ptp4l20634-21apt-get11:15:021
134491390,3ptp4l13733-21diskstats08:40:152
134491390,3ptp4l1321-21ntp_states11:40:240
134491390,3ptp4l0-21swapper/211:00:292
397099380,8cyclictest41-21ksoftirqd/310:06:173
3969993834,3cyclictest33-21ksoftirqd/209:15:312
134491380,4ptp4l6389-21cpuspeed_turbos07:15:113
134491380,4ptp4l14262-21sed09:50:180
134491380,4ptp4l0-21swapper/310:17:593
134491380,4ptp4l0-21swapper/212:10:162
134491380,4ptp4l0-21swapper/211:55:262
134491380,4ptp4l0-21swapper/211:43:132
134491380,4ptp4l0-21swapper/211:15:402
134491380,4ptp4l0-21swapper/210:02:402
134491380,4ptp4l0-21swapper/209:28:112
134491380,4ptp4l0-21swapper/209:23:032
134491380,4ptp4l0-21swapper/209:14:092
134491380,4ptp4l0-21swapper/207:55:252
134491380,4ptp4l0-21swapper/112:32:181
134491380,4ptp4l0-21swapper/112:15:241
134491380,4ptp4l0-21swapper/111:46:531
134491380,4ptp4l0-21swapper/111:46:531
134491380,4ptp4l0-21swapper/111:43:041
134491380,4ptp4l0-21swapper/111:33:281
134491380,4ptp4l0-21swapper/012:12:060
134491380,4ptp4l0-21swapper/011:50:120
134491380,4ptp4l0-21swapper/011:50:120
134491380,4ptp4l0-21swapper/011:25:390
134491380,3ptp4l0-21swapper/208:30:552
134491380,3ptp4l0-21swapper/207:40:432
134491380,3ptp4l0-21swapper/011:46:370
134491380,3ptp4l0-21swapper/011:46:370
134491370,4ptp4l0-21swapper/209:40:572
134491370,4ptp4l0-21swapper/111:14:121
134491370,3ptp4l0-21swapper/211:30:192
134491350,4ptp4l0-21swapper/112:05:271
46198300,6rtkit-daemon0-21swapper/207:09:072
36752142,6sleep33703-21ls07:10:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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