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2026-03-09 - 15:53
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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 Mon Mar 09, 2026 12:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
618521620,6sleep11211899cyclictest08:05:171
1794021620,4sleep01211799cyclictest07:20:210
1211999730,25cyclictest26796-21sed07:40:192
1211999722,21cyclictest0-21swapper/211:35:242
1211999711,22cyclictest13291-21date11:50:002
134491690,4ptp4l0-21swapper/310:00:193
134491690,4ptp4l0-21swapper/310:00:193
1211999682,20cyclictest4408-21cat08:00:292
1211999660,26cyclictest2484-21taskset09:06:152
1211999660,22cyclictest21546-21date08:40:012
12118996532,9cyclictest25-21ksoftirqd/111:45:151
151712640,3sleep10-21swapper/109:35:191
1211999642,24cyclictest0-21swapper/207:50:162
1211999640,26cyclictest23525-21chrt09:54:442
134491630,7ptp4l0-21swapper/207:06:232
134491630,3ptp4l33-21ksoftirqd/212:05:182
1211999630,21cyclictest4913-21mailstats10:20:252
1211999620,27cyclictest14559-21chrt10:40:502
12118996224,6cyclictest25-21ksoftirqd/107:40:181
12117996210,7cyclictest9-21ksoftirqd/009:05:010
1211999610,24cyclictest438-21/usr/sbin/munin07:55:252
12118996122,9cyclictest25-21ksoftirqd/111:10:271
12117996128,4cyclictest9-21ksoftirqd/012:05:010
134491600,5ptp4l0-21swapper/107:05:171
134491600,4ptp4l0-21swapper/009:22:260
1211999602,22cyclictest0-21swapper/209:47:382
1211999601,21cyclictest15882-21timerandwakeup07:15:252
134491590,3ptp4l0-21swapper/210:54:032
134491580,4ptp4l0-21swapper/207:20:282
134491580,4ptp4l0-21swapper/012:30:100
134491580,3ptp4l0-21swapper/109:00:131
134491580,15ptp4l0-21swapper/308:35:173
1211999583,19cyclictest0-21swapper/211:10:592
1211899585,9cyclictest25-21ksoftirqd/112:20:271
12118995830,7cyclictest25-21ksoftirqd/108:10:201
134491570,4ptp4l0-21swapper/210:46:082
134491570,3ptp4l0-21swapper/209:43:312
12118995721,9cyclictest25-21ksoftirqd/110:05:261
12118995721,8cyclictest25-21ksoftirqd/110:10:191
134491560,4ptp4l0-21swapper/008:14:510
1211999562,18cyclictest0-21swapper/208:10:142
1211999560,26cyclictest10604-21taskset11:41:402
1211999560,23cyclictest916-21apt-config10:15:022
12118995626,6cyclictest25-21ksoftirqd/109:50:191
134491550,4ptp4l0-21swapper/308:56:053
134491550,3ptp4l0-21swapper/312:25:423
134491550,3ptp4l0-21swapper/011:20:230
134491550,3ptp4l0-21swapper/011:20:230
134491550,3ptp4l0-21swapper/008:09:250
134491550,13ptp4l10095-21diskstats07:05:140
1211999550,28cyclictest30975-21cpu10:10:142
12118995539,3cyclictest25-21ksoftirqd/112:30:121
12118995526,6cyclictest25-21ksoftirqd/109:40:191
12118995522,7cyclictest25-21ksoftirqd/108:59:591
134491540,4ptp4l0-21swapper/108:25:241
134491540,4ptp4l0-21swapper/012:16:570
134491540,4ptp4l0-21swapper/011:11:270
134491540,4ptp4l0-21swapper/007:54:520
134491540,3ptp4l0-21swapper/009:55:140
134491540,2ptp4l0-21swapper/108:32:091
1211999540,25cyclictest25628-21taskset09:57:142
1211899544,9cyclictest25-21ksoftirqd/112:15:001
1211899541,10cyclictest25-21ksoftirqd/112:40:001
12117995424,3cyclictest9-21ksoftirqd/010:25:140
134491530,4ptp4l0-21swapper/310:54:583
134491530,4ptp4l0-21swapper/310:19:363
134491530,3ptp4l0-21swapper/307:41:373
1211999530,31cyclictest14534-21ntp_states11:50:232
1211899539,2cyclictest2785-21latency_hist09:10:001
12118995339,3cyclictest25-21ksoftirqd/111:30:141
12118995320,7cyclictest25-21ksoftirqd/108:23:161
12118995320,7cyclictest25-21ksoftirqd/108:23:161
134491520,5ptp4l0-21swapper/311:32:443
134491520,4ptp4l0-21swapper/310:22:043
134491520,4ptp4l0-21swapper/111:00:281
134491520,4ptp4l0-21swapper/008:50:210
134491520,3ptp4l0-21swapper/308:12:073
134491520,3ptp4l0-21swapper/212:25:302
1211999522,21cyclictest0-21swapper/211:57:142
1211999520,18cyclictest6333-21ls08:05:172
1211899526,9cyclictest25-21ksoftirqd/109:45:211
1211899523,9cyclictest25-21ksoftirqd/108:40:261
12118995232,7cyclictest25-21ksoftirqd/107:20:221
12118995222,7cyclictest25-21ksoftirqd/108:00:001
12118995220,3cyclictest25-21ksoftirqd/111:59:271
1211899521,6cyclictest25-21ksoftirqd/112:15:201
134491510,4ptp4l0-21swapper/312:35:443
134491510,4ptp4l0-21swapper/312:18:033
134491510,4ptp4l0-21swapper/310:37:163
134491510,4ptp4l0-21swapper/307:58:523
134491510,4ptp4l0-21swapper/009:49:580
1211999510,26cyclictest7037-21ntp_states10:25:232
1211899515,8cyclictest25-21ksoftirqd/110:25:141
1211899514,9cyclictest25-21ksoftirqd/112:00:201
1211899514,10cyclictest25-21ksoftirqd/109:30:221
1211899511,8cyclictest25-21ksoftirqd/112:05:171
12117995121,4cyclictest9-21ksoftirqd/012:25:160
12117995118,3cyclictest9-21ksoftirqd/011:30:010
134491500,4ptp4l0-21swapper/012:21:180
134491500,3ptp4l0-21swapper/208:59:332
134491500,3ptp4l0-21swapper/010:14:300
1211899505,7cyclictest25-21ksoftirqd/107:45:231
1211899505,3cyclictest25-21ksoftirqd/110:45:141
1211899504,3cyclictest25-21ksoftirqd/109:15:181
1211899503,6cyclictest25-21ksoftirqd/111:35:181
1211899502,6cyclictest25-21ksoftirqd/110:20:271
12118995013,4cyclictest25-21ksoftirqd/110:30:171
1211899500,9cyclictest25-21ksoftirqd/109:30:001
12117995020,3cyclictest9-21ksoftirqd/010:45:180
134491490,5ptp4l0-21swapper/010:30:230
134491490,4ptp4l0-21swapper/309:29:023
134491490,4ptp4l0-21swapper/009:32:530
134491490,4ptp4l0-21swapper/009:06:120
134491490,4ptp4l0-21swapper/007:26:580
134491490,3ptp4l0-21swapper/311:08:413
134491490,3ptp4l0-21swapper/307:37:433
1211999492,17cyclictest0-21swapper/207:30:272
1211899495,7cyclictest25-21ksoftirqd/107:10:211
1211899494,4cyclictest25-21ksoftirqd/112:25:191
1211899490,2cyclictest121rcu_preempt11:00:011
134491480,8ptp4l0-21swapper/009:50:280
134491480,4ptp4l0-21swapper/310:56:203
134491480,4ptp4l0-21swapper/309:42:263
134491480,4ptp4l0-21swapper/010:18:160
134491480,4ptp4l0-21swapper/009:19:560
1211999480,19cyclictest13887-21ls08:20:252
1211999480,19cyclictest13887-21ls08:20:252
1211899485,6cyclictest25-21ksoftirqd/108:00:171
1211899485,4cyclictest25-21ksoftirqd/110:50:201
1211899484,9cyclictest25-21ksoftirqd/111:09:591
1211899484,2cyclictest121rcu_preempt07:30:211
1211899483,7cyclictest25-21ksoftirqd/108:50:141
134491470,4ptp4l0-21swapper/111:53:101
134491470,4ptp4l0-21swapper/009:12:120
134491470,2ptp4l0-21swapper/011:50:250
1211999470,21cyclictest134491ptp4l10:00:282
1211999470,21cyclictest134491ptp4l10:00:282
12118994734,3cyclictest25-21ksoftirqd/110:40:141
1211899472,5cyclictest25-21ksoftirqd/110:00:001
1211799475,5cyclictest9-21ksoftirqd/011:45:160
134491460,4ptp4l1212099cyclictest07:17:093
134491460,4ptp4l0-21swapper/210:06:542
134491460,11ptp4l0-21swapper/107:27:361
1211899465,2cyclictest121rcu_preempt10:00:191
1211899465,2cyclictest121rcu_preempt10:00:191
1211899464,6cyclictest0-21swapper/109:10:251
1211899463,7cyclictest25-21ksoftirqd/111:15:191
1211899463,6cyclictest25-21ksoftirqd/111:25:251
1211899463,6cyclictest25-21ksoftirqd/109:25:001
12118994624,9cyclictest25-21ksoftirqd/110:40:001
12118994618,2cyclictest25-21ksoftirqd/108:15:131
12118994617,7cyclictest25-21ksoftirqd/110:15:081
1211899461,5cyclictest25-21ksoftirqd/108:45:151
12117994632,3cyclictest9-21ksoftirqd/011:40:150
12117994617,4cyclictest9-21ksoftirqd/007:10:170
12117994612,5cyclictest9-21ksoftirqd/008:00:000
134491450,9ptp4l0-21swapper/011:35:370
134491450,9ptp4l0-21swapper/011:18:410
134491450,5ptp4l17529-21iostat08:30:150
134491450,5ptp4l0-21swapper/207:25:592
134491450,10ptp4l0-21swapper/210:38:212
1211899452,4cyclictest25-21ksoftirqd/107:35:131
12117994535,3cyclictest9-21ksoftirqd/007:45:210
134491440,9ptp4l0-21swapper/212:33:572
134491440,9ptp4l0-21swapper/211:00:592
134491440,8ptp4l0-21swapper/312:32:003
134491440,3ptp4l41-21ksoftirqd/310:10:113
134491440,3ptp4l0-21swapper/208:49:452
134491440,3ptp4l0-21swapper/007:18:460
12119994440,2cyclictest8544-21fschecks_count10:30:142
1211999440,34cyclictest25756-21latency_hist07:40:002
1211899441,2cyclictest121rcu_preempt07:50:261
1211899441,2cyclictest121rcu_preempt07:15:241
12117994431,4cyclictest9-21ksoftirqd/012:15:000
12117994412,7cyclictest9-21ksoftirqd/007:35:130
134491430,9ptp4l0-21swapper/211:30:492
134491430,5ptp4l0-21swapper/309:30:223
134491430,5ptp4l0-21swapper/007:40:240
134491430,4ptp4l0-21swapper/311:10:063
134491430,4ptp4l0-21swapper/309:21:143
134491430,4ptp4l0-21swapper/309:05:443
134491430,3ptp4l0-21swapper/212:24:532
12120994332,7cyclictest41-21ksoftirqd/307:20:113
1211899435,2cyclictest25-21ksoftirqd/111:20:231
1211899435,2cyclictest25-21ksoftirqd/111:20:231
134491420,9ptp4l0-21swapper/209:34:172
134491420,5ptp4l0-21swapper/307:45:103
134491420,5ptp4l0-21swapper/307:10:273
134491420,5ptp4l0-21swapper/009:35:250
134491420,4ptp4l3120-21ls11:25:272
134491420,4ptp4l30371-21meminfo11:15:212
134491420,4ptp4l22436-21apt-get12:10:032
134491420,4ptp4l0-21swapper/312:08:143
134491420,4ptp4l0-21swapper/308:16:283
134491420,4ptp4l0-21swapper/308:00:233
134491420,3ptp4l27387-21ps08:50:252
134491420,3ptp4l19262-21apt-get08:35:121
12117994236,4cyclictest25158-21kworker/0:211:30:440
1211799423,3cyclictest121rcu_preempt10:35:160
12117994228,5cyclictest9-21ksoftirqd/010:20:250
12117994224,3cyclictest18677-21kworker/0:008:35:220
12117994214,3cyclictest9-21ksoftirqd/012:35:150
12117994212,4cyclictest9-21ksoftirqd/008:00:230
12117994211,3cyclictest9-21ksoftirqd/008:30:000
12117994211,3cyclictest9-21ksoftirqd/008:20:190
12117994211,3cyclictest9-21ksoftirqd/008:20:190
134491410,6ptp4l0-21swapper/308:42:293
134491410,5ptp4l0-21swapper/012:05:110
134491410,5ptp4l0-21swapper/008:40:110
134491410,4ptp4l33-21ksoftirqd/208:30:132
134491410,4ptp4l25185-21iostat_ios11:05:172
134491410,4ptp4l15568-21hddtemp_smartct10:45:173
134491410,4ptp4l0-21swapper/310:30:493
134491410,4ptp4l0-21swapper/310:29:533
134491410,4ptp4l0-21swapper/310:05:253
134491410,4ptp4l0-21swapper/010:54:320
1211999411,27cyclictest9786-21cat09:24:592
12118994129,5cyclictest25-21ksoftirqd/111:40:161
12117994137,3cyclictest9-21ksoftirqd/008:55:200
12117994135,3cyclictest9-21ksoftirqd/010:05:140
12117994125,6cyclictest9-21ksoftirqd/010:40:120
1211799411,2cyclictest121rcu_preempt09:30:000
12117994111,5cyclictest9-21ksoftirqd/007:30:150
134491400,5ptp4l0-21swapper/208:15:282
134491400,4ptp4l9773-21meminfo11:40:223
134491400,4ptp4l0-21swapper/312:21:253
134491400,4ptp4l0-21swapper/312:14:033
134491400,4ptp4l0-21swapper/312:00:183
134491400,4ptp4l0-21swapper/311:55:243
134491400,4ptp4l0-21swapper/311:38:493
134491400,4ptp4l0-21swapper/311:25:283
134491400,4ptp4l0-21swapper/311:20:103
134491400,4ptp4l0-21swapper/311:20:103
134491400,4ptp4l0-21swapper/311:15:123
134491400,4ptp4l0-21swapper/309:58:563
134491400,4ptp4l0-21swapper/309:36:443
134491400,4ptp4l0-21swapper/309:01:263
134491400,4ptp4l0-21swapper/308:45:023
134491400,4ptp4l0-21swapper/308:25:193
134491400,4ptp4l0-21swapper/212:36:112
134491400,4ptp4l0-21swapper/211:22:132
134491400,4ptp4l0-21swapper/211:22:132
134491400,4ptp4l0-21swapper/210:58:012
134491400,4ptp4l0-21swapper/209:35:272
134491400,4ptp4l0-21swapper/209:16:172
134491400,4ptp4l0-21swapper/209:00:292
134491400,4ptp4l0-21swapper/207:13:002
134491400,4ptp4l0-21swapper/010:59:340
134491400,4ptp4l0-21swapper/009:40:240
134491400,3ptp4l5704-21diskstats08:05:133
134491400,3ptp4l28318-21apt-get07:45:122
134491400,3ptp4l19040-21meminfo12:00:212
134491400,3ptp4l11109-21ntp_states08:15:230
12117994036,2cyclictest111rcuc/011:05:180
12117994028,3cyclictest9-21ksoftirqd/010:00:220
12117994028,3cyclictest9-21ksoftirqd/010:00:220
1211799402,2cyclictest121rcu_preempt08:45:180
12117994010,4cyclictest9-21ksoftirqd/011:55:270
134491390,5ptp4l0-21swapper/308:50:103
134491390,5ptp4l0-21swapper/308:22:523
134491390,5ptp4l0-21swapper/308:22:523
134491390,4ptp4l0-21swapper/311:53:123
134491390,4ptp4l0-21swapper/311:45:153
134491390,4ptp4l0-21swapper/311:00:393
134491390,4ptp4l0-21swapper/310:43:423
134491390,4ptp4l0-21swapper/309:50:203
134491390,4ptp4l0-21swapper/309:46:053
134491390,4ptp4l0-21swapper/309:10:163
134491390,4ptp4l0-21swapper/308:30:183
134491390,4ptp4l0-21swapper/307:50:233
134491390,4ptp4l0-21swapper/212:19:212
134491390,4ptp4l0-21swapper/209:25:152
134491390,4ptp4l0-21swapper/209:13:302
134491390,4ptp4l0-21swapper/208:43:452
134491390,4ptp4l0-21swapper/011:03:010
134491390,3ptp4l0-21swapper/309:15:063
134491380,4ptp4l0-21swapper/208:25:062
134491380,3ptp4l0-21swapper/307:25:313
134491370,5ptp4l0-21swapper/307:07:003
134491370,4ptp4l0-21swapper/307:32:293
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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