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2025-12-18 - 14:16
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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 Thu Dec 18, 2025 00:45:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21522997735,5cyclictest33-21ksoftirqd/221:50:172
21522997713,62cyclictest0-21swapper/221:10:282
21518997512,61cyclictest28196-21kworker/1:121:11:481
21522997136,5cyclictest33-21ksoftirqd/200:40:002
21518997114,12cyclictest905-21taskset00:14:281
21522996833,6cyclictest33-21ksoftirqd/200:05:002
21518996814,11cyclictest1317-21runrttasks19:32:301
21518996712,10cyclictest574-21seq23:02:191
21518996711,11cyclictest122132sleep123:27:471
21522996632,6cyclictest33-21ksoftirqd/221:20:002
2152299662,35cyclictest0-21swapper/222:00:182
21518996612,16cyclictest7754-21/usr/sbin/munin19:50:241
21518996612,10cyclictest1317-21runrttasks21:28:121
21522996531,5cyclictest33-21ksoftirqd/219:40:172
21522996433,5cyclictest33-21ksoftirqd/220:45:162
21522996433,4cyclictest33-21ksoftirqd/223:40:102
21522996429,6cyclictest33-21ksoftirqd/221:40:172
21522996428,6cyclictest33-21ksoftirqd/220:35:242
21518996414,11cyclictest1317-21runrttasks22:58:501
21518996413,11cyclictest1317-21runrttasks21:55:441
21518996413,11cyclictest1317-21runrttasks20:32:221
21518996412,16cyclictest4764-21mailstats23:10:231
21518996412,11cyclictest1317-21runrttasks21:04:291
21518996411,15cyclictest28801-21cpuspeed_turbos21:45:121
2151799641,25cyclictest1317-21runrttasks20:39:210
21522996332,4cyclictest33-21ksoftirqd/223:25:162
21522996331,5cyclictest33-21ksoftirqd/219:30:272
21522996331,3cyclictest33-21ksoftirqd/220:20:142
21522996328,7cyclictest33-21ksoftirqd/222:05:162
2152299632,33cyclictest0-21swapper/221:20:182
2151899638,17cyclictest1266-21cat00:15:141
21518996313,10cyclictest1317-21runrttasks22:20:071
21518996312,10cyclictest1317-21runrttasks20:07:081
2151799630,23cyclictest14325-21seq21:11:510
21522996232,6cyclictest33-21ksoftirqd/223:15:302
21522996230,7cyclictest33-21ksoftirqd/219:35:202
21522996230,5cyclictest33-21ksoftirqd/219:15:172
21522996229,5cyclictest33-21ksoftirqd/223:25:012
21522996229,5cyclictest33-21ksoftirqd/223:25:012
21522996228,6cyclictest33-21ksoftirqd/220:25:252
21522996228,5cyclictest33-21ksoftirqd/221:55:252
21522996228,5cyclictest33-21ksoftirqd/219:20:142
21522996226,5cyclictest33-21ksoftirqd/223:00:232
21522996222,6cyclictest33-21ksoftirqd/222:30:182
21518996213,10cyclictest1317-21runrttasks20:14:371
21518996212,11cyclictest11827-21seq19:56:251
2151799622,23cyclictest0-21swapper/022:27:460
2151799622,21cyclictest0-21swapper/023:10:470
2151799620,27cyclictest945-21/usr/sbin/munin20:45:130
21522996128,6cyclictest33-21ksoftirqd/221:10:002
21522996128,5cyclictest33-21ksoftirqd/222:45:222
21522996128,5cyclictest33-21ksoftirqd/220:05:192
21522996127,5cyclictest33-21ksoftirqd/220:59:592
21522996122,5cyclictest33-21ksoftirqd/222:15:202
21518996115,16cyclictest2695-21chrt19:37:211
21518996115,11cyclictest5147-21chrt19:44:031
21518996114,17cyclictest1317-21runrttasks23:51:381
21518996113,11cyclictest1317-21runrttasks20:26:251
2151799612,24cyclictest0-21swapper/022:03:590
2151799612,23cyclictest0-21swapper/022:37:450
2151799612,22cyclictest0-21swapper/021:26:040
21522996031,3cyclictest33-21ksoftirqd/221:30:112
21522996030,5cyclictest33-21ksoftirqd/219:50:132
21522996025,6cyclictest33-21ksoftirqd/200:15:252
21522996024,5cyclictest33-21ksoftirqd/221:25:182
21518996012,10cyclictest1317-21runrttasks22:05:341
2151799602,24cyclictest0-21swapper/020:28:350
2151799602,23cyclictest0-21swapper/022:06:520
2151799602,23cyclictest0-21swapper/019:48:030
2151799602,21cyclictest0-21swapper/023:02:160
2152299594,2cyclictest121rcu_preempt00:07:062
21522995926,5cyclictest33-21ksoftirqd/222:25:142
21518995917,11cyclictest12264-21taskset21:09:501
21518995915,16cyclictest21361-21chrt23:47:061
21518995913,11cyclictest11857-21taskset22:15:341
21518995913,10cyclictest1317-21runrttasks00:35:431
21518995912,11cyclictest1317-21runrttasks22:11:121
21518995912,11cyclictest1317-21runrttasks20:03:351
2151799592,23cyclictest0-21swapper/019:30:580
2151799592,22cyclictest0-21swapper/022:21:120
2151799592,22cyclictest0-21swapper/022:19:390
2151799592,22cyclictest0-21swapper/020:40:030
2151799592,22cyclictest0-21swapper/019:11:280
134491590,12ptp4l0-21swapper/319:10:193
21522995826,6cyclictest33-21ksoftirqd/222:10:152
21522995824,4cyclictest33-21ksoftirqd/223:50:252
21522995823,7cyclictest33-21ksoftirqd/200:20:132
21522995823,6cyclictest33-21ksoftirqd/222:55:172
21522995819,5cyclictest33-21ksoftirqd/200:30:222
2151899589,12cyclictest6678-21awk00:25:191
21518995816,16cyclictest28000-21chrt19:20:561
21518995816,11cyclictest9845-21taskset23:21:511
21518995816,11cyclictest9845-21taskset23:21:511
21518995814,15cyclictest2818-21chrt20:49:331
21518995814,12cyclictest30538-21chrt19:28:341
21518995814,10cyclictest23453-21taskset22:41:101
21518995812,10cyclictest1317-21runrttasks00:05:371
2151799582,22cyclictest0-21swapper/019:39:440
2151799582,21cyclictest0-21swapper/021:52:110
2151799582,21cyclictest0-21swapper/000:05:350
2151799582,20cyclictest0-21swapper/023:47:210
2151799582,20cyclictest0-21swapper/000:22:070
2151799582,19cyclictest0-21swapper/022:32:300
21517995813,19cyclictest1317-21runrttasks21:41:100
2151799580,27cyclictest11899-21seq19:57:200
134491580,4ptp4l0-21swapper/223:56:352
134491580,4ptp4l0-21swapper/219:45:132
134491580,3ptp4l0-21swapper/319:42:333
134491580,3ptp4l0-21swapper/223:35:032
21522995731,7cyclictest33-21ksoftirqd/220:10:132
21522995730,6cyclictest33-21ksoftirqd/221:00:142
21522995726,5cyclictest33-21ksoftirqd/222:55:002
21522995724,5cyclictest33-21ksoftirqd/222:40:282
21522995723,5cyclictest33-21ksoftirqd/220:40:182
21522995721,6cyclictest33-21ksoftirqd/221:50:002
21518995715,18cyclictest16580-21chrt22:26:501
21518995715,16cyclictest25838-21chrt22:47:191
21518995715,16cyclictest18931-21chrt22:32:311
21518995715,11cyclictest28455-21chrt00:03:371
21518995711,11cyclictest1317-21runrttasks21:35:101
2151799572,18cyclictest0-21swapper/019:26:230
134491570,3ptp4l0-21swapper/223:10:542
21522995622,5cyclictest33-21ksoftirqd/220:50:242
21522995622,5cyclictest33-21ksoftirqd/219:10:102
21518995617,16cyclictest19160-21seq21:24:391
21518995617,15cyclictest28190-21seq22:52:241
21518995616,12cyclictest28298-21taskset21:43:001
21518995616,10cyclictest5134-21taskset20:52:041
21518995614,16cyclictest23403-21chrt20:21:561
21518995614,16cyclictest20970-21chrt20:15:351
21518995613,10cyclictest3584-21chrt00:20:111
2151799562,23cyclictest0-21swapper/023:30:360
2151799562,22cyclictest0-21swapper/022:56:540
2151799562,22cyclictest0-21swapper/019:54:490
2151799562,22cyclictest0-21swapper/000:11:570
2151799562,21cyclictest0-21swapper/021:34:260
2151799560,24cyclictest25733-21sshd21:35:290
21522995524,5cyclictest33-21ksoftirqd/220:00:152
2151899559,15cyclictest0-21swapper/119:45:151
21518995516,16cyclictest375-21chrt21:52:241
21518995514,10cyclictest19012-21taskset23:41:231
21518995513,15cyclictest32178-21mailstats20:40:241
21518995513,11cyclictest1317-21runrttasks23:19:441
2151799552,22cyclictest0-21swapper/022:53:210
2151799552,22cyclictest0-21swapper/020:34:010
2151799552,22cyclictest0-21swapper/020:07:050
2151799552,21cyclictest0-21swapper/020:57:480
134491550,5ptp4l0-21swapper/119:07:211
21522995423,5cyclictest33-21ksoftirqd/222:20:162
21522995422,17cyclictest33-21ksoftirqd/219:59:592
21518995415,17cyclictest7391-21chrt20:56:311
21518995415,15cyclictest3039-21chrt23:08:131
21518995413,10cyclictest21360-21taskset22:39:091
2151799542,21cyclictest0-21swapper/023:58:520
21522995323,6cyclictest33-21ksoftirqd/219:29:582
21522995320,5cyclictest33-21ksoftirqd/223:45:262
2151899539,11cyclictest4204-21sed22:00:201
21518995317,16cyclictest14502-21seq23:32:431
21518995317,11cyclictest26091-21taskset23:58:461
21518995314,16cyclictest16884-21chrt23:38:501
21518995310,7cyclictest22310-21iostat21:30:161
2151799532,23cyclictest0-21swapper/022:45:350
2151799532,20cyclictest0-21swapper/019:18:410
2151799532,19cyclictest0-21swapper/023:25:100
134491530,4ptp4l0-21swapper/320:49:113
21522995221,7cyclictest33-21ksoftirqd/222:39:592
21522995219,5cyclictest33-21ksoftirqd/220:30:172
21518995213,10cyclictest1317-21runrttasks21:17:411
2151799522,22cyclictest0-21swapper/020:04:490
2151799522,20cyclictest0-21swapper/023:23:270
2151799522,20cyclictest0-21swapper/023:23:270
2151799522,20cyclictest0-21swapper/000:26:310
134491520,3ptp4l0-21swapper/323:11:453
134491520,19ptp4l0-21swapper/019:08:490
21522995122,6cyclictest33-21ksoftirqd/200:30:002
21522995120,3cyclictest33-21ksoftirqd/221:35:142
2151799512,22cyclictest0-21swapper/021:09:110
2151799512,22cyclictest0-21swapper/020:13:350
2151799512,20cyclictest0-21swapper/022:42:060
134491510,4ptp4l0-21swapper/319:27:223
134491510,4ptp4l0-21swapper/219:04:592
2152299505,3cyclictest33-21ksoftirqd/200:10:152
21518995016,10cyclictest10203-21chrt00:31:551
21518995015,10cyclictest30413-21taskset20:37:491
2151799502,21cyclictest0-21swapper/020:15:590
134491500,4ptp4l0-21swapper/322:02:143
134491500,4ptp4l0-21swapper/319:31:163
21522994939,3cyclictest33-21ksoftirqd/223:05:142
2151799492,21cyclictest0-21swapper/021:15:410
2151799492,19cyclictest0-21swapper/023:43:060
134491490,8ptp4l0-21swapper/321:48:203
2151799482,20cyclictest0-21swapper/023:54:340
2151799482,19cyclictest0-21swapper/021:49:260
2151799482,18cyclictest0-21swapper/019:42:200
134491480,5ptp4l0-21swapper/319:05:293
134491480,4ptp4l0-21swapper/223:34:472
134491480,10ptp4l0-21swapper/300:10:203
21522994737,3cyclictest33-21ksoftirqd/220:15:282
21518994715,10cyclictest25870-21chrt19:19:031
2151799472,20cyclictest0-21swapper/019:22:590
2151799470,21cyclictest1317-21runrttasks22:12:320
134491470,4ptp4l401ktimersoftd/321:24:443
2151799464,15cyclictest0-21swapper/000:02:120
134491460,3ptp4l0-21swapper/321:34:203
134491460,3ptp4l0-21swapper/300:25:583
134491450,4ptp4l0-21swapper/300:20:283
2151799441,25cyclictest2445-21mailstats23:05:260
134491440,8ptp4l401ktimersoftd/320:50:443
134491440,4ptp4l30999-21apt-get21:50:103
134491440,4ptp4l0-21swapper/321:27:393
134491440,3ptp4l0-21swapper/319:19:243
134491430,8ptp4l0-21swapper/323:42:153
134491430,5ptp4l0-21swapper/300:35:143
134491430,4ptp4l0-21swapper/322:49:353
2151799427,21cyclictest10679-21seq00:35:010
2151799420,27cyclictest3221-21seq00:18:420
134491420,4ptp4l26188-21apt-get20:30:103
134491420,4ptp4l0-21swapper/319:24:493
134491420,4ptp4l0-21swapper/300:34:013
134491420,3ptp4l0-21swapper/320:07:183
134491420,10ptp4l0-21swapper/319:55:493
2151799412,23cyclictest0-21swapper/000:33:340
2151799412,20cyclictest0-21swapper/023:16:160
2151799411,26cyclictest23630-21cat20:24:540
134491410,5ptp4l25266-21ntp_states23:55:233
134491410,5ptp4l14936-21apt-get23:35:133
134491410,5ptp4l0-21swapper/323:45:133
134491410,5ptp4l0-21swapper/322:10:113
134491410,4ptp4l16969-21apt-get20:10:093
134491410,4ptp4l13753-21ntp_states23:30:233
134491410,4ptp4l0-21swapper/321:55:083
134491410,4ptp4l0-21swapper/320:26:523
134491410,3ptp4l12379-21apt-get20:00:133
134491410,2ptp4l0-21swapper/300:16:353
134491400,6ptp4l0-21swapper/119:09:591
134491400,5ptp4l0-21swapper/319:45:113
134491400,5ptp4l0-21swapper/319:39:093
134491400,5ptp4l0-21swapper/023:36:580
134491400,5ptp4l0-21swapper/021:20:250
134491400,4ptp4l6847-21ntp_states23:15:243
134491400,4ptp4l26718-21diskstats21:40:133
134491400,4ptp4l2152399cyclictest22:30:063
134491400,4ptp4l0-21swapper/322:10:003
134491400,4ptp4l0-21swapper/319:51:153
134491400,4ptp4l0-21swapper/021:58:000
134491400,4ptp4l0-21swapper/021:03:410
2151799391,24cyclictest5258-21seq20:53:420
134491390,4ptp4l0-21swapper/323:27:373
134491390,4ptp4l0-21swapper/323:20:133
134491390,4ptp4l0-21swapper/323:20:133
134491390,4ptp4l0-21swapper/320:20:243
134491390,4ptp4l0-21swapper/320:15:143
134491390,4ptp4l0-21swapper/300:00:253
134491390,3ptp4l21850-21apt-get23:50:103
134491390,3ptp4l11835-21users22:15:273
134491390,3ptp4l0-21swapper/320:55:213
134491380,5ptp4l0-21swapper/320:40:103
134491380,4ptp4l0-21swapper/323:07:033
134491380,4ptp4l0-21swapper/323:00:113
134491380,4ptp4l0-21swapper/322:30:003
134491380,4ptp4l0-21swapper/321:37:313
134491380,4ptp4l0-21swapper/321:15:133
134491380,4ptp4l0-21swapper/321:14:023
134491380,4ptp4l0-21swapper/321:08:043
134491380,4ptp4l0-21swapper/321:00:143
134491380,4ptp4l0-21swapper/320:36:233
134491380,3ptp4l29121-21df_inode00:05:163
134491380,2ptp4l21708-21apt-get22:40:113
134491370,4ptp4l0-21swapper/322:55:173
134491370,4ptp4l0-21swapper/322:35:263
134491370,3ptp4l0-21swapper/322:21:403
134491360,3ptp4l0-21swapper/322:50:243
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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