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2025-11-26 - 18:26
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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 Wed Nov 26, 2025 12:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
227452830,4sleep10-21swapper/112:25:171
2847191680,5ptp4l0-21swapper/212:25:232
2847191650,6ptp4l0-21swapper/007:05:250
4136996227,7cyclictest25-21ksoftirqd/110:40:161
2847191620,5ptp4l0-21swapper/207:11:542
2847191600,4ptp4l0-21swapper/307:20:243
2847191580,4ptp4l0-21swapper/210:00:152
2847191580,4ptp4l0-21swapper/209:00:242
2847191580,4ptp4l0-21swapper/208:20:532
4136995725,7cyclictest25-21ksoftirqd/110:05:001
4136995721,7cyclictest25-21ksoftirqd/110:35:001
2847191570,4ptp4l0-21swapper/008:20:170
2847191570,3ptp4l0-21swapper/210:50:292
2847191570,3ptp4l0-21swapper/011:35:170
4136995627,3cyclictest25-21ksoftirqd/108:20:001
2847191560,4ptp4l0-21swapper/008:31:480
280572560,5sleep228056-21apt-config10:20:012
4136995527,6cyclictest25-21ksoftirqd/108:50:001
4136995527,3cyclictest25-21ksoftirqd/111:20:261
4136995526,3cyclictest25-21ksoftirqd/108:05:271
4136995525,8cyclictest25-21ksoftirqd/107:10:171
4136995522,8cyclictest25-21ksoftirqd/111:25:271
4136995522,3cyclictest25-21ksoftirqd/111:05:131
2847191550,4ptp4l0-21swapper/210:09:572
2847191550,4ptp4l0-21swapper/110:54:391
2847191550,3ptp4l0-21swapper/009:19:280
2847191550,14ptp4l1754-21apt-get07:05:121
4136995429,3cyclictest25-21ksoftirqd/112:00:131
4136995422,7cyclictest25-21ksoftirqd/108:20:261
2847191540,5ptp4l0-21swapper/310:12:503
2847191540,4ptp4l0-21swapper/212:38:302
2847191540,4ptp4l0-21swapper/212:17:152
2847191540,4ptp4l0-21swapper/211:27:402
2847191540,4ptp4l0-21swapper/208:59:492
2847191540,4ptp4l0-21swapper/207:24:312
2847191540,4ptp4l0-21swapper/111:45:381
2847191540,3ptp4l0-21swapper/208:10:232
2847191540,3ptp4l0-21swapper/012:11:430
4136995322,4cyclictest25-21ksoftirqd/110:05:131
4136995320,8cyclictest25-21ksoftirqd/109:35:191
4136995319,7cyclictest25-21ksoftirqd/110:28:421
2847191530,4ptp4l0-21swapper/211:42:462
2847191530,4ptp4l0-21swapper/211:33:102
2847191530,4ptp4l0-21swapper/209:57:412
2847191530,4ptp4l0-21swapper/209:50:542
2847191530,4ptp4l0-21swapper/208:52:502
2847191530,4ptp4l0-21swapper/208:52:502
2847191530,4ptp4l0-21swapper/208:36:002
2847191530,3ptp4l0-21swapper/308:55:303
4136995223,7cyclictest25-21ksoftirqd/109:15:151
4136995220,6cyclictest25-21ksoftirqd/108:40:241
4136995215,5cyclictest25-21ksoftirqd/110:20:231
2847191520,4ptp4l0-21swapper/310:31:253
2847191520,4ptp4l0-21swapper/309:28:243
2847191520,4ptp4l0-21swapper/211:50:402
2847191520,4ptp4l0-21swapper/211:02:382
2847191520,4ptp4l0-21swapper/210:11:102
2847191520,4ptp4l0-21swapper/209:23:342
2847191520,4ptp4l0-21swapper/207:54:592
2847191520,4ptp4l0-21swapper/207:42:242
2847191520,4ptp4l0-21swapper/207:29:592
2847191520,4ptp4l0-21swapper/109:51:441
2847191520,4ptp4l0-21swapper/108:32:381
2847191520,3ptp4l0-21swapper/111:36:561
4136995124,10cyclictest25-21ksoftirqd/108:55:291
4136995123,7cyclictest25-21ksoftirqd/110:35:191
4136995121,3cyclictest25-21ksoftirqd/107:41:461
4136995119,8cyclictest25-21ksoftirqd/112:30:271
4136995119,6cyclictest25-21ksoftirqd/112:05:191
2847191510,4ptp4l0-21swapper/309:13:063
2847191510,4ptp4l0-21swapper/209:38:402
2847191510,4ptp4l0-21swapper/208:34:352
2847191510,4ptp4l0-21swapper/208:07:102
2847191510,4ptp4l0-21swapper/109:33:341
4136995026,6cyclictest25-21ksoftirqd/107:50:411
4136995021,7cyclictest25-21ksoftirqd/108:50:181
4136995021,7cyclictest25-21ksoftirqd/108:50:181
4136995020,7cyclictest25-21ksoftirqd/107:25:141
4136995015,7cyclictest25-21ksoftirqd/109:20:301
4136995015,4cyclictest25-21ksoftirqd/109:05:151
2847191500,4ptp4l0-21swapper/208:03:192
2847191500,4ptp4l0-21swapper/111:34:551
2847191500,3ptp4l0-21swapper/112:20:041
2847191500,3ptp4l0-21swapper/112:18:101
2847191500,3ptp4l0-21swapper/012:08:140
4136994924,6cyclictest25-21ksoftirqd/111:00:181
4136994922,8cyclictest25-21ksoftirqd/110:45:141
4136994921,6cyclictest25-21ksoftirqd/109:25:291
4136994917,7cyclictest25-21ksoftirqd/109:00:551
2847191490,9ptp4l0-21swapper/010:07:040
4136994830,9cyclictest25-21ksoftirqd/109:40:141
4136994827,5cyclictest25-21ksoftirqd/111:55:171
4136994819,3cyclictest25-21ksoftirqd/109:10:211
413699473,7cyclictest121rcu_preempt10:14:261
4136994720,7cyclictest25-21ksoftirqd/111:50:291
4136994716,7cyclictest25-21ksoftirqd/112:11:431
4136994715,8cyclictest25-21ksoftirqd/107:55:261
413699471,4cyclictest25-21ksoftirqd/107:39:591
4136994711,4cyclictest25-21ksoftirqd/111:15:251
413699470,8cyclictest25-21ksoftirqd/108:15:001
413699461,7cyclictest8563-21cron07:20:001
413699461,7cyclictest25-21ksoftirqd/110:15:281
2847191460,9ptp4l0-21swapper/009:55:170
2847191460,4ptp4l0-21swapper/111:14:101
2847191460,3ptp4l0-21swapper/110:56:441
413699452,4cyclictest25-21ksoftirqd/112:40:001
4136994518,4cyclictest25-21ksoftirqd/108:25:241
2847191450,9ptp4l0-21swapper/211:09:322
2847191450,9ptp4l0-21swapper/210:26:242
2847191450,9ptp4l0-21swapper/208:46:422
2847191450,4ptp4l0-21swapper/109:49:371
2847191450,1ptp4l121rcu_preempt10:51:510
413699442,7cyclictest25-21ksoftirqd/107:30:191
2847191440,9ptp4l0-21swapper/212:30:262
2847191440,9ptp4l0-21swapper/212:07:082
2847191440,5ptp4l0-21swapper/210:45:122
2847191440,4ptp4l6853-21apt-get08:25:140
2847191440,4ptp4l0-21swapper/010:57:000
2847191440,3ptp4l24551-21apt-get12:30:110
413699434,7cyclictest25-21ksoftirqd/108:35:151
413699434,7cyclictest25-21ksoftirqd/107:45:221
2847191430,8ptp4l0-21swapper/212:14:472
2847191430,8ptp4l0-21swapper/212:04:362
2847191430,8ptp4l0-21swapper/211:48:082
2847191430,8ptp4l0-21swapper/210:42:592
2847191430,4ptp4l7990-21df10:45:140
2847191430,4ptp4l5255-21apt-get10:40:150
2847191430,4ptp4l25006-21apt-get07:55:130
2847191430,4ptp4l11121-21apt-get07:25:100
2847191430,4ptp4l0-21swapper/008:10:010
413699423,3cyclictest25-21ksoftirqd/109:55:191
413699422,3cyclictest25-21ksoftirqd/107:20:291
2847191420,9ptp4l0-21swapper/211:23:582
2847191420,9ptp4l0-21swapper/209:15:022
2847191420,9ptp4l0-21swapper/207:59:412
2847191420,5ptp4l27178-21df_inode12:35:140
2847191420,5ptp4l0-21swapper/008:10:250
2847191420,4ptp4l25722-21apt-get10:15:120
2847191420,4ptp4l19929-21apt-get12:20:120
2847191420,4ptp4l18420-21apt-get08:50:120
2847191420,4ptp4l18420-21apt-get08:50:120
2847191420,4ptp4l14007-21iostat07:30:180
2847191420,4ptp4l0-21swapper/210:30:092
2847191420,4ptp4l0-21swapper/012:03:090
2847191420,3ptp4l6986-21apt-get09:35:110
2847191420,3ptp4l22692-21apt-get07:50:130
2847191420,3ptp4l1264-21apt-get11:40:130
2847191410,5ptp4l25001-21/usr/sbin/munin11:20:180
2847191410,5ptp4l0-21swapper/309:35:223
2847191410,5ptp4l0-21swapper/307:45:243
2847191410,5ptp4l0-21swapper/007:45:170
2847191410,4ptp4l4286-21iostat11:45:180
2847191410,4ptp4l2943-21iostat_ios09:25:220
2847191410,4ptp4l19877-21diskstats11:10:150
2847191410,4ptp4l0-21swapper/310:50:283
2847191410,4ptp4l0-21swapper/211:37:202
2847191410,4ptp4l0-21swapper/208:29:392
2847191410,3ptp4l8543-21df11:55:150
2847191410,3ptp4l29977-21users10:20:480
2847191410,3ptp4l27047-21df_inode11:25:160
2847191410,3ptp4l21758-21ls08:55:220
2847191410,2ptp4l4677-21apt-get09:30:110
4138994026,4cyclictest41-21ksoftirqd/308:15:203
2847191400,5ptp4l1726-21awk08:15:003
2847191400,5ptp4l0-21swapper/312:09:583
2847191400,5ptp4l0-21swapper/308:50:553
2847191400,5ptp4l0-21swapper/308:50:553
2847191400,5ptp4l0-21swapper/111:40:131
2847191400,4ptp4l25688-21df_inode09:05:140
2847191400,4ptp4l23917-21/usr/sbin/munin09:00:180
2847191400,4ptp4l0-21swapper/312:02:363
2847191400,4ptp4l0-21swapper/311:29:393
2847191400,4ptp4l0-21swapper/309:55:163
2847191400,4ptp4l0-21swapper/309:05:243
2847191400,4ptp4l0-21swapper/308:05:263
2847191400,4ptp4l0-21swapper/307:30:143
2847191400,4ptp4l0-21swapper/212:22:152
2847191400,4ptp4l0-21swapper/211:55:242
2847191400,4ptp4l0-21swapper/211:12:202
2847191400,4ptp4l0-21swapper/210:57:462
2847191400,4ptp4l0-21swapper/210:38:582
2847191400,4ptp4l0-21swapper/210:16:002
2847191400,4ptp4l0-21swapper/209:45:322
2847191400,4ptp4l0-21swapper/209:32:242
2847191400,4ptp4l0-21swapper/209:14:082
2847191400,4ptp4l0-21swapper/209:07:212
2847191400,4ptp4l0-21swapper/208:41:222
2847191400,4ptp4l0-21swapper/208:16:142
2847191400,4ptp4l0-21swapper/207:30:352
2847191400,4ptp4l0-21swapper/108:00:271
2847191400,4ptp4l0-21swapper/011:50:220
2847191400,4ptp4l0-21swapper/010:35:160
2847191400,4ptp4l0-21swapper/010:30:160
2847191400,4ptp4l0-21swapper/010:27:300
2847191400,4ptp4l0-21swapper/009:40:160
2847191400,4ptp4l0-21swapper/008:35:190
2847191400,4ptp4l0-21swapper/008:01:490
2847191400,4ptp4l0-21swapper/007:40:280
2847191400,4ptp4l0-21swapper/007:35:140
2847191400,4ptp4l0-21swapper/007:24:040
2847191400,4ptp4l0-21swapper/007:17:100
2847191400,4ptp4l0-21swapper/007:13:570
2847191400,3ptp4l28719-21ls09:10:230
2847191400,3ptp4l18373-21ntp_states11:05:220
2847191400,3ptp4l17457-21sensors_temp08:45:260
2847191400,3ptp4l15900-21memory11:00:210
2847191400,3ptp4l14931-21ntp_states08:40:270
2847191400,3ptp4l12050-21df09:45:160
2847191400,3ptp4l0-21swapper/010:10:480
2847191390,4ptp4l23524-21/usr/sbin/munin11:15:270
2847191390,4ptp4l0-21swapper/312:36:593
2847191390,4ptp4l0-21swapper/312:30:153
2847191390,4ptp4l0-21swapper/311:51:243
2847191390,4ptp4l0-21swapper/311:48:083
2847191390,4ptp4l0-21swapper/311:44:063
2847191390,4ptp4l0-21swapper/311:38:153
2847191390,4ptp4l0-21swapper/310:22:123
2847191390,4ptp4l0-21swapper/309:49:423
2847191390,4ptp4l0-21swapper/309:23:343
2847191390,4ptp4l0-21swapper/309:16:583
2847191390,4ptp4l0-21swapper/308:41:483
2847191390,4ptp4l0-21swapper/308:02:123
2847191390,4ptp4l0-21swapper/209:42:562
2847191390,4ptp4l0-21swapper/207:35:182
2847191390,4ptp4l0-21swapper/012:25:040
2847191390,4ptp4l0-21swapper/010:00:160
2847191390,4ptp4l0-21swapper/008:15:480
2847191390,3ptp4l32646-21df_inode09:20:140
2847191390,3ptp4l0-21swapper/310:26:243
2847191390,3ptp4l0-21swapper/309:31:243
2847191390,3ptp4l0-21swapper/209:26:522
2847191390,3ptp4l0-21swapper/207:45:292
2847191390,3ptp4l0-21swapper/012:15:150
2847191390,3ptp4l0-21swapper/011:30:150
2847191390,3ptp4l0-21swapper/009:50:160
2847191380,4ptp4l0-21swapper/311:31:033
2847191380,4ptp4l0-21swapper/311:00:383
2847191380,4ptp4l0-21swapper/310:56:143
2847191380,4ptp4l0-21swapper/310:48:073
2847191380,4ptp4l0-21swapper/310:19:223
2847191380,4ptp4l0-21swapper/310:02:023
2847191380,4ptp4l0-21swapper/309:54:303
2847191380,4ptp4l0-21swapper/308:45:523
2847191380,4ptp4l0-21swapper/308:35:043
2847191380,4ptp4l0-21swapper/307:58:283
2847191380,4ptp4l0-21swapper/211:15:102
2847191380,3ptp4l0-21swapper/310:07:483
2847191380,3ptp4l0-21swapper/307:50:253
2847191380,3ptp4l0-21swapper/207:16:252
2847191370,4ptp4l0-21swapper/311:55:243
2847191370,4ptp4l0-21swapper/310:44:193
2847191370,4ptp4l0-21swapper/308:34:363
2847191370,4ptp4l0-21swapper/307:38:223
2847191370,4ptp4l0-21swapper/307:29:443
2847191370,3ptp4l0-21swapper/311:20:483
2847191360,4ptp4l0-21swapper/312:16:343
2847191360,4ptp4l0-21swapper/308:23:403
2847191360,4ptp4l0-21swapper/307:42:243
2847191360,3ptp4l0-21swapper/311:15:473
2847191360,3ptp4l0-21swapper/309:41:483
2847191360,3ptp4l0-21swapper/308:25:123
2847191350,3ptp4l0-21swapper/312:10:013
2847191340,4ptp4l0-21swapper/311:08:553
2847191340,3ptp4l41-21ksoftirqd/309:01:063
2847191340,3ptp4l0-21swapper/312:22:233
2847191330,4ptp4l0-21swapper/311:11:383
4138993025,3cyclictest41-21ksoftirqd/307:20:003
4138992924,3cyclictest41-21ksoftirqd/310:40:003
4138992817,9cyclictest41-21ksoftirqd/312:25:193
4138992723,2cyclictest41-21ksoftirqd/307:14:013
38432232,15sleep33863-21ls07:09:593
2849691212,13phc2sys3900-21basename07:10:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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