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2025-08-21 - 22:10
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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 Thu Aug 21, 2025 12:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
84892720,5sleep0313499cyclictest10:50:000
84892720,5sleep0313499cyclictest10:50:000
9852680,5sleep00-21swapper/008:15:150
2847191680,31ptp4l25-21ksoftirqd/109:35:011
2847191680,31ptp4l25-21ksoftirqd/109:35:011
3135996727,9cyclictest25-21ksoftirqd/112:30:291
2847191670,4ptp4l20429-21dump-pmu-power12:25:000
313799661,25cyclictest7931-21cpuspeed_turbos07:20:143
313799661,25cyclictest7931-21cpuspeed_turbos07:20:143
3135996630,10cyclictest25-21ksoftirqd/110:40:001
2847191640,5ptp4l0-21swapper/010:25:280
249452640,6sleep0313499cyclictest09:05:170
313799630,22cyclictest3022-21mailstats10:35:263
2847191630,4ptp4l11259-21ntp_states07:25:251
2847191630,20ptp4l0-21swapper/007:20:170
2847191630,20ptp4l0-21swapper/007:20:160
3135996223,9cyclictest25-21ksoftirqd/110:25:141
2847191620,3ptp4l10609-21/usr/sbin/munin09:45:160
313799612,56cyclictest0-21swapper/311:10:253
2847191610,4ptp4l0-21swapper/207:20:262
2847191610,4ptp4l0-21swapper/207:20:262
313799601,25cyclictest8489-21taskset11:56:303
313799601,21cyclictest20310-21cpuspeed_turbos10:05:153
2847191600,3ptp4l0-21swapper/109:15:301
2847191590,4ptp4l0-21swapper/009:30:210
2847191590,4ptp4l0-21swapper/009:30:210
2847191590,3ptp4l0-21swapper/010:35:150
313799580,55cyclictest32350-21/usr/sbin/munin09:20:223
313799580,25cyclictest28441-21taskset08:04:523
2847191580,4ptp4l0-21swapper/008:21:550
2847191580,3ptp4l0-21swapper/310:55:153
2847191580,3ptp4l0-21swapper/009:10:180
3135995727,10cyclictest25-21ksoftirqd/109:55:141
3135995717,6cyclictest25-21ksoftirqd/109:43:331
2847191570,4ptp4l0-21swapper/209:40:002
2847191570,3ptp4l0-21swapper/108:29:551
2847191570,3ptp4l0-21swapper/008:25:510
313799562,51cyclictest0-21swapper/309:05:293
3135995630,4cyclictest25-21ksoftirqd/109:20:271
3135995624,4cyclictest25-21ksoftirqd/111:35:171
3135995623,6cyclictest25-21ksoftirqd/108:25:001
2847191560,4ptp4l0-21swapper/108:11:271
2847191560,3ptp4l0-21swapper/111:40:281
313799551,24cyclictest23825-21taskset09:00:343
313799550,52cyclictest13559-21/usr/sbin/munin11:00:153
3135995526,6cyclictest25-21ksoftirqd/111:50:301
3135995525,4cyclictest25-21ksoftirqd/111:00:011
3135995522,6cyclictest25-21ksoftirqd/110:35:001
3135995520,4cyclictest25-21ksoftirqd/111:10:261
2847191550,4ptp4l0-21swapper/107:47:521
2847191550,3ptp4l0-21swapper/009:55:070
2847191550,3ptp4l0-21swapper/008:30:450
313799540,26cyclictest17246-21taskset09:58:353
313799540,22cyclictest8407-21taskset10:49:583
313799540,22cyclictest8407-21taskset10:49:583
3135995426,9cyclictest25-21ksoftirqd/111:45:211
3135995426,9cyclictest25-21ksoftirqd/111:45:201
3135995425,4cyclictest25-21ksoftirqd/111:30:261
3135995423,9cyclictest25-21ksoftirqd/112:20:151
3135995418,10cyclictest25-21ksoftirqd/107:35:161
2847191540,4ptp4l0-21swapper/211:24:202
2847191540,3ptp4l0-21swapper/308:34:213
2847191540,3ptp4l0-21swapper/011:25:200
313799531,21cyclictest6362-21taskset11:53:543
313799530,50cyclictest765-21ssh10:30:293
313799530,25cyclictest15754-21taskset12:14:503
3135995326,8cyclictest25-21ksoftirqd/107:55:141
3135995325,6cyclictest25-21ksoftirqd/110:50:191
3135995324,6cyclictest25-21ksoftirqd/109:00:191
3135995324,4cyclictest25-21ksoftirqd/112:15:141
3135995323,9cyclictest25-21ksoftirqd/110:05:011
3135995323,7cyclictest25-21ksoftirqd/111:10:001
2847191530,4ptp4l0-21swapper/010:57:150
2847191530,3ptp4l0-21swapper/007:33:110
313799521,25cyclictest10592-21taskset10:53:223
3135995228,10cyclictest25-21ksoftirqd/109:05:161
3135995223,3cyclictest25-21ksoftirqd/110:41:231
3135995221,9cyclictest25-21ksoftirqd/108:35:001
3135995218,7cyclictest25-21ksoftirqd/111:25:431
2847191520,4ptp4l0-21swapper/207:16:212
2847191520,4ptp4l0-21swapper/108:56:371
2847191520,4ptp4l0-21swapper/107:05:051
2847191520,4ptp4l0-21swapper/012:05:400
2847191520,3ptp4l0-21swapper/110:02:011
2847191520,11ptp4l0-21swapper/211:04:032
313799511,39cyclictest2847191ptp4l08:50:283
313599515,7cyclictest25-21ksoftirqd/111:20:001
3135995126,8cyclictest25-21ksoftirqd/112:35:241
3135995125,8cyclictest25-21ksoftirqd/108:20:001
3135995123,8cyclictest25-21ksoftirqd/108:50:201
3135995122,6cyclictest25-21ksoftirqd/112:10:011
2847191510,4ptp4l0-21swapper/209:34:252
2847191510,4ptp4l0-21swapper/209:34:252
313799500,26cyclictest24449-21taskset11:22:003
313799500,25cyclictest12261-21taskset08:36:313
3135995028,6cyclictest25-21ksoftirqd/109:55:011
3135995018,4cyclictest25-21ksoftirqd/112:25:151
2847191500,3ptp4l0-21swapper/007:28:010
3135994925,4cyclictest25-21ksoftirqd/110:55:181
3135994923,4cyclictest25-21ksoftirqd/109:45:171
3135994923,3cyclictest25-21ksoftirqd/110:25:001
3135994917,3cyclictest25-21ksoftirqd/108:08:491
2847191490,7ptp4l1700-21meminfo07:05:210
2847191490,4ptp4l0-21swapper/108:38:161
2847191490,3ptp4l0-21swapper/012:35:220
313799480,24cyclictest17725-21taskset12:15:363
313599484,9cyclictest25-21ksoftirqd/107:35:001
3135994823,8cyclictest25-21ksoftirqd/107:20:291
3135994823,8cyclictest25-21ksoftirqd/107:20:291
2847191480,4ptp4l12804-21apt-get08:40:140
2847191480,4ptp4l12804-21apt-get08:40:140
2847191480,4ptp4l0-21swapper/209:40:102
2847191480,4ptp4l0-21swapper/208:44:402
2847191480,4ptp4l0-21swapper/208:44:402
2847191480,4ptp4l0-21swapper/107:54:241
2847191470,5ptp4l0-21swapper/207:08:272
313599464,8cyclictest25-21ksoftirqd/108:50:001
2847191460,3ptp4l0-21swapper/108:02:011
2847191460,10ptp4l0-21swapper/208:52:282
313799451,41cyclictest24060-21apt07:55:113
313599455,7cyclictest25-21ksoftirqd/110:45:311
313599455,7cyclictest25-21ksoftirqd/110:45:311
3135994524,7cyclictest25-21ksoftirqd/111:55:281
313599450,5cyclictest241ktimersoftd/111:25:001
2847191450,9ptp4l0-21swapper/212:33:142
2847191450,9ptp4l0-21swapper/208:18:172
2847191450,9ptp4l0-21swapper/011:16:590
2847191450,5ptp4l0-21swapper/209:45:122
2847191450,4ptp4l0-21swapper/009:50:400
2847191450,3ptp4l1655-21apt-get10:35:132
313799442,20cyclictest0-21swapper/310:25:343
313799442,20cyclictest0-21swapper/308:17:593
313599445,3cyclictest25-21ksoftirqd/107:40:251
313599443,6cyclictest121rcu_preempt09:27:491
313599440,7cyclictest25-21ksoftirqd/110:10:141
3134994420,10cyclictest9-21ksoftirqd/010:30:260
2847191440,9ptp4l0-21swapper/209:27:252
2847191440,9ptp4l0-21swapper/011:36:420
2847191440,4ptp4l32107-21apt-get11:40:130
2847191440,4ptp4l0-21swapper/010:00:400
2847191440,4ptp4l0-21swapper/007:15:120
2847191440,3ptp4l10125-21apt-get07:25:142
2847191440,3ptp4l0-21swapper/107:17:411
41798430,4rtkit-daemon0-21swapper/207:38:382
313799432,38cyclictest0-21swapper/308:45:183
313799432,20cyclictest0-21swapper/307:43:253
313799431,28cyclictest29362-21seq11:32:573
313599435,8cyclictest25-21ksoftirqd/112:10:131
313599434,7cyclictest25-21ksoftirqd/109:35:211
3135994326,8cyclictest25-21ksoftirqd/109:10:291
2847191430,9ptp4l0-21swapper/212:37:262
2847191430,8ptp4l0-21swapper/210:34:512
2847191430,8ptp4l0-21swapper/209:02:102
2847191430,8ptp4l0-21swapper/207:55:482
2847191430,5ptp4l5987-21apt-get09:35:140
2847191430,5ptp4l0-21swapper/008:50:220
2847191430,4ptp4l0-21swapper/308:40:243
2847191430,4ptp4l0-21swapper/308:40:243
2847191430,4ptp4l0-21swapper/307:33:163
2847191430,4ptp4l0-21swapper/011:33:440
2847191430,4ptp4l0-21swapper/010:06:420
2847191430,3ptp4l2071-21apt-get11:45:120
2847191430,3ptp4l2071-21apt-get11:45:120
2847191430,3ptp4l13708-21apt-get12:10:112
2847191430,3ptp4l0-21swapper/110:15:141
2847191430,3ptp4l0-21swapper/011:21:280
313799421,38cyclictest4300-21ntp_states07:10:233
313599424,4cyclictest25-21ksoftirqd/112:00:401
2847191420,9ptp4l0-21swapper/210:00:542
2847191420,8ptp4l0-21swapper/211:44:502
2847191420,5ptp4l0-21swapper/311:05:143
2847191420,5ptp4l0-21swapper/012:15:210
2847191420,4ptp4l26830-21hddtemp_smartct08:00:190
2847191420,4ptp4l0-21swapper/211:45:242
2847191420,4ptp4l0-21swapper/211:45:242
2847191420,4ptp4l0-21swapper/211:26:232
2847191420,4ptp4l0-21swapper/210:22:362
2847191420,4ptp4l0-21swapper/012:04:280
2847191420,4ptp4l0-21swapper/008:45:270
2847191420,4ptp4l0-21swapper/007:46:330
2847191420,4ptp4l0-21swapper/007:44:500
2847191420,3ptp4l8625-21df_inode09:40:140
2847191420,3ptp4l3483-21df_inode07:10:160
2847191420,3ptp4l22470-21apt-get10:10:130
2847191420,3ptp4l22323-21iostat07:50:190
2847191420,3ptp4l16242-21iostat11:05:180
2847191420,3ptp4l14833-21ntp_states12:10:220
313799411,37cyclictest22977-21apt-get12:30:133
2847191410,9ptp4l0-21swapper/210:55:482
2847191410,9ptp4l0-21swapper/209:54:102
2847191410,9ptp4l0-21swapper/207:48:252
2847191410,8ptp4l0-21swapper/207:12:062
2847191410,6ptp4l9248-21ps10:50:200
2847191410,6ptp4l0-21swapper/307:08:033
2847191410,5ptp4l26235-21ls12:35:213
2847191410,5ptp4l0-21swapper/211:15:242
2847191410,5ptp4l0-21swapper/208:55:222
2847191410,5ptp4l0-21swapper/208:07:372
2847191410,5ptp4l0-21swapper/207:40:302
2847191410,4ptp4l0-21swapper/308:55:233
2847191410,4ptp4l0-21swapper/108:40:131
2847191410,4ptp4l0-21swapper/108:40:131
2847191410,4ptp4l0-21swapper/107:13:211
2847191410,4ptp4l0-21swapper/012:30:090
2847191410,4ptp4l0-21swapper/012:25:210
2847191410,4ptp4l0-21swapper/009:24:220
2847191410,4ptp4l0-21swapper/009:15:120
2847191410,4ptp4l0-21swapper/008:35:260
2847191410,4ptp4l0-21swapper/008:10:100
2847191410,4ptp4l0-21swapper/007:36:080
2847191410,3ptp4l7143-21hddtemp_smartct11:55:170
2847191410,3ptp4l4249-21df10:40:143
2847191410,3ptp4l27114-21apt-get10:20:120
2847191410,3ptp4l21470-21users08:55:300
2847191410,3ptp4l19109-21ntp_states11:10:232
313799400,17cyclictest3920-21irqrtprio08:20:183
2847191400,5ptp4l0-21swapper/311:45:243
2847191400,5ptp4l0-21swapper/311:45:243
2847191400,4ptp4l20651-21/usr/sbin/munin12:25:173
2847191400,4ptp4l0-21swapper/312:20:273
2847191400,4ptp4l0-21swapper/311:25:203
2847191400,4ptp4l0-21swapper/307:26:033
2847191400,4ptp4l0-21swapper/212:20:262
2847191400,4ptp4l0-21swapper/212:09:112
2847191400,4ptp4l0-21swapper/211:39:142
2847191400,4ptp4l0-21swapper/211:31:032
2847191400,4ptp4l0-21swapper/211:07:082
2847191400,4ptp4l0-21swapper/210:52:592
2847191400,4ptp4l0-21swapper/210:48:082
2847191400,4ptp4l0-21swapper/210:48:082
2847191400,4ptp4l0-21swapper/210:25:252
2847191400,4ptp4l0-21swapper/210:12:232
2847191400,4ptp4l0-21swapper/209:18:192
2847191400,4ptp4l0-21swapper/209:07:082
2847191400,4ptp4l0-21swapper/208:45:222
2847191400,4ptp4l0-21swapper/208:31:502
2847191400,4ptp4l0-21swapper/208:14:292
2847191400,4ptp4l0-21swapper/207:50:562
2847191400,4ptp4l0-21swapper/207:30:512
2847191400,4ptp4l0-21swapper/011:53:560
2847191400,4ptp4l0-21swapper/011:14:050
2847191400,4ptp4l0-21swapper/011:00:520
2847191400,4ptp4l0-21swapper/010:40:260
2847191400,4ptp4l0-21swapper/009:02:110
2847191400,4ptp4l0-21swapper/008:05:210
2847191400,3ptp4l4041-21apt-get10:40:132
2847191400,3ptp4l32340-21ls09:20:202
2847191400,3ptp4l24994-21df10:15:140
2847191400,3ptp4l0-21swapper/309:10:273
2847191400,3ptp4l0-21swapper/209:10:412
2847191400,3ptp4l0-21swapper/009:27:280
2847191400,3ptp4l0-21swapper/007:58:100
2847191390,5ptp4l12091-21irqrtprio12:05:163
2847191390,5ptp4l0-21swapper/310:01:583
2847191390,5ptp4l0-21swapper/309:40:233
2847191390,5ptp4l0-21swapper/211:55:332
2847191390,5ptp4l0-21swapper/210:15:202
2847191390,4ptp4l0-21swapper/311:38:013
2847191390,4ptp4l0-21swapper/310:19:143
2847191390,4ptp4l0-21swapper/310:11:563
2847191390,4ptp4l0-21swapper/309:51:543
2847191390,4ptp4l0-21swapper/212:26:132
2847191390,4ptp4l0-21swapper/211:51:042
2847191390,4ptp4l0-21swapper/210:08:412
2847191390,4ptp4l0-21swapper/209:55:292
2847191390,4ptp4l0-21swapper/208:38:472
2847191390,4ptp4l0-21swapper/208:25:592
2847191390,3ptp4l21508-21ps11:15:263
2847191390,3ptp4l10306-21ps12:00:272
2847191390,3ptp4l0-21swapper/312:00:253
2847191390,3ptp4l0-21swapper/309:17:213
2847191390,3ptp4l0-21swapper/212:16:512
2847191390,3ptp4l0-21swapper/208:00:252
313799382,27cyclictest0-21swapper/307:39:423
313799382,23cyclictest0-21swapper/310:20:583
313799381,32cyclictest28710-21apt-get08:05:143
313799380,28cyclictest21388-21seq07:48:393
2847191380,4ptp4l0-21swapper/309:46:023
2847191380,4ptp4l0-21swapper/309:27:313
2847191380,4ptp4l0-21swapper/307:15:503
2847191380,3ptp4l0-21swapper/308:12:173
2847191380,3ptp4l0-21swapper/208:20:012
313799372,20cyclictest0-21swapper/309:31:363
313799372,20cyclictest0-21swapper/309:31:353
313799372,19cyclictest0-21swapper/311:41:183
2847191370,3ptp4l0-21swapper/307:50:013
313799365,13cyclictest2849491getstats09:37:453
313799321,28cyclictest1778-21gnome-shell08:25:583
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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