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2025-11-30 - 21:42
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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 Sun Nov 30, 2025 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
213992690,6sleep22103099cyclictest11:45:252
2103199692,27cyclictest0-21swapper/312:25:273
142802680,3sleep30-21swapper/311:30:243
129272680,5sleep20-21swapper/211:30:002
170942640,7sleep02102899cyclictest08:10:170
137492640,4sleep10-21swapper/111:30:181
102392640,3sleep00-21swapper/010:15:000
2847191630,8ptp4l0-21swapper/207:37:582
2847191630,8ptp4l0-21swapper/207:37:582
2847191630,5ptp4l0-21swapper/109:40:131
21031996326,9cyclictest41-21ksoftirqd/312:20:253
21031996326,8cyclictest41-21ksoftirqd/309:12:353
2847191620,5ptp4l0-21swapper/107:07:551
2847191620,5ptp4l0-21swapper/010:00:160
2847191610,3ptp4l0-21swapper/111:36:381
21031996128,10cyclictest41-21ksoftirqd/309:25:003
21031996029,4cyclictest41-21ksoftirqd/311:55:193
21031996025,7cyclictest41-21ksoftirqd/308:07:043
21031996023,7cyclictest41-21ksoftirqd/309:57:043
21028996033,3cyclictest9-21ksoftirqd/011:55:280
21028996025,10cyclictest9-21ksoftirqd/009:00:000
2847191590,3ptp4l0-21swapper/110:18:411
21031995925,4cyclictest41-21ksoftirqd/311:10:013
21031995923,8cyclictest41-21ksoftirqd/307:20:553
21028995926,9cyclictest9-21ksoftirqd/010:55:140
2847191580,3ptp4l0-21swapper/208:37:172
2847191580,3ptp4l0-21swapper/011:00:290
2847191580,3ptp4l0-21swapper/009:30:240
239562580,5sleep00-21swapper/007:15:200
21031995827,3cyclictest41-21ksoftirqd/309:41:433
21031995826,4cyclictest41-21ksoftirqd/311:00:193
21031995825,7cyclictest41-21ksoftirqd/310:17:103
21031995824,6cyclictest41-21ksoftirqd/310:30:213
21028995822,6cyclictest9-21ksoftirqd/009:00:220
21028995821,6cyclictest9-21ksoftirqd/010:45:150
2847191570,3ptp4l0-21swapper/207:56:582
2847191570,3ptp4l0-21swapper/107:56:031
2847191570,3ptp4l0-21swapper/107:50:251
2847191570,3ptp4l0-21swapper/008:25:280
2847191570,11ptp4l0-21swapper/210:25:502
21031995729,5cyclictest41-21ksoftirqd/312:00:233
21031995729,5cyclictest41-21ksoftirqd/312:00:233
2847191560,3ptp4l0-21swapper/111:50:211
2847191560,3ptp4l0-21swapper/111:14:221
2847191560,3ptp4l0-21swapper/108:50:121
2847191560,3ptp4l0-21swapper/008:40:240
21031995626,7cyclictest41-21ksoftirqd/310:25:273
21031995625,7cyclictest41-21ksoftirqd/311:53:263
21031995625,7cyclictest41-21ksoftirqd/310:05:283
21031995623,8cyclictest41-21ksoftirqd/308:45:263
21031995623,7cyclictest41-21ksoftirqd/308:21:443
21028995629,6cyclictest9-21ksoftirqd/011:30:270
21028995626,6cyclictest9-21ksoftirqd/011:49:360
21028995626,6cyclictest9-21ksoftirqd/007:40:210
21028995626,3cyclictest9-21ksoftirqd/011:50:180
21028995625,5cyclictest9-21ksoftirqd/010:15:280
21028995622,5cyclictest9-21ksoftirqd/011:40:000
21028995620,5cyclictest9-21ksoftirqd/011:05:300
2847191550,4ptp4l0-21swapper/112:36:441
2847191550,3ptp4l0-21swapper/109:15:291
21031995527,9cyclictest41-21ksoftirqd/309:15:313
21031995525,8cyclictest41-21ksoftirqd/308:35:203
21031995525,7cyclictest41-21ksoftirqd/309:00:143
21031995525,7cyclictest41-21ksoftirqd/308:40:153
21031995525,4cyclictest41-21ksoftirqd/312:10:303
21031995521,7cyclictest41-21ksoftirqd/310:20:473
21028995525,5cyclictest9-21ksoftirqd/009:41:060
21028995524,5cyclictest9-21ksoftirqd/012:20:560
21028995524,5cyclictest9-21ksoftirqd/007:50:330
21028995523,5cyclictest9-21ksoftirqd/009:15:190
21028995523,5cyclictest9-21ksoftirqd/008:45:190
21028995523,4cyclictest9-21ksoftirqd/010:55:000
21028995520,5cyclictest9-21ksoftirqd/008:20:200
21031995423,7cyclictest41-21ksoftirqd/308:50:153
21031995420,8cyclictest41-21ksoftirqd/307:10:143
2103199541,7cyclictest41-21ksoftirqd/307:20:003
21028995422,9cyclictest9-21ksoftirqd/007:30:190
21028995421,6cyclictest9-21ksoftirqd/012:05:010
21028995421,6cyclictest9-21ksoftirqd/012:05:010
2847191530,4ptp4l0-21swapper/107:39:031
2847191530,4ptp4l0-21swapper/107:39:021
2847191530,4ptp4l0-21swapper/010:39:070
2847191530,4ptp4l0-21swapper/009:46:560
21031995325,9cyclictest41-21ksoftirqd/309:25:283
21031995323,7cyclictest41-21ksoftirqd/310:45:193
21031995322,7cyclictest41-21ksoftirqd/309:05:203
21031995321,7cyclictest41-21ksoftirqd/311:17:153
21031995321,7cyclictest41-21ksoftirqd/310:40:223
21031995321,7cyclictest41-21ksoftirqd/310:05:003
21031995320,9cyclictest41-21ksoftirqd/307:55:223
21028995324,5cyclictest9-21ksoftirqd/009:05:480
21028995324,4cyclictest9-21ksoftirqd/009:55:160
21028995319,6cyclictest9-21ksoftirqd/012:20:010
21028995317,5cyclictest9-21ksoftirqd/008:05:280
2847191520,4ptp4l0-21swapper/010:44:210
2847191520,4ptp4l0-21swapper/008:30:370
2847191520,3ptp4l0-21swapper/008:37:340
2847191520,3ptp4l0-21swapper/007:11:430
21031995228,3cyclictest41-21ksoftirqd/312:30:213
21031995227,3cyclictest41-21ksoftirqd/308:25:183
21031995224,8cyclictest41-21ksoftirqd/308:55:163
21028995226,6cyclictest9-21ksoftirqd/010:05:310
21028995224,7cyclictest9-21ksoftirqd/009:15:010
21028995223,3cyclictest9-21ksoftirqd/008:02:430
2847191510,4ptp4l0-21swapper/208:13:232
2847191510,4ptp4l0-21swapper/112:31:431
2847191510,4ptp4l0-21swapper/110:21:581
2847191510,4ptp4l0-21swapper/007:28:320
21031995137,3cyclictest41-21ksoftirqd/307:50:153
21031995125,6cyclictest41-21ksoftirqd/309:45:163
21031995125,3cyclictest41-21ksoftirqd/312:35:203
21031995123,7cyclictest41-21ksoftirqd/310:10:263
2103199512,24cyclictest0-21swapper/309:53:013
21031995121,7cyclictest41-21ksoftirqd/307:45:283
21028995123,7cyclictest9-21ksoftirqd/007:55:230
21028995120,5cyclictest9-21ksoftirqd/011:40:020
21028995119,5cyclictest9-21ksoftirqd/009:25:210
21028995119,3cyclictest9-21ksoftirqd/010:25:200
21031995022,7cyclictest41-21ksoftirqd/310:55:193
21031995021,9cyclictest41-21ksoftirqd/311:25:183
21031995020,7cyclictest41-21ksoftirqd/308:18:073
21028995021,7cyclictest9-21ksoftirqd/011:10:300
21028995020,6cyclictest9-21ksoftirqd/012:30:260
21028995019,3cyclictest9-21ksoftirqd/007:35:230
21028995019,3cyclictest9-21ksoftirqd/007:35:230
21028995017,6cyclictest9-21ksoftirqd/007:25:000
2847191490,4ptp4l0-21swapper/110:28:321
2847191490,3ptp4l0-21swapper/109:35:111
2103199495,3cyclictest41-21ksoftirqd/307:30:013
2103199492,21cyclictest0-21swapper/311:21:093
21031994919,7cyclictest41-21ksoftirqd/310:35:283
21031994918,7cyclictest41-21ksoftirqd/307:40:313
2103199490,5cyclictest14228-21apt08:05:003
2102899498,3cyclictest9-21ksoftirqd/012:05:260
2102899495,2cyclictest9-21ksoftirqd/008:50:300
2102899494,6cyclictest9-21ksoftirqd/012:10:200
21028994924,6cyclictest9-21ksoftirqd/011:18:010
2847191480,4ptp4l0-21swapper/311:45:123
2847191480,4ptp4l0-21swapper/012:26:150
2847191480,4ptp4l0-21swapper/007:46:070
2847191480,3ptp4l0-21swapper/112:10:281
2847191480,3ptp4l0-21swapper/110:40:191
2847191480,12ptp4l0-21swapper/212:20:232
2103199485,3cyclictest121rcu_preempt09:31:203
2103199483,7cyclictest41-21ksoftirqd/307:35:013
2103199482,13cyclictest0-21swapper/311:43:163
2847191470,4ptp4l0-21swapper/108:13:231
2847191470,2ptp4l0-21swapper/209:33:472
2847191470,11ptp4l0-21swapper/210:10:192
2103199473,7cyclictest41-21ksoftirqd/307:35:213
2103199473,7cyclictest41-21ksoftirqd/307:35:203
2103199472,10cyclictest0-21swapper/311:35:243
21031994717,7cyclictest41-21ksoftirqd/311:10:223
2102899475,6cyclictest9-21ksoftirqd/010:25:000
21028994730,5cyclictest9-21ksoftirqd/011:30:000
2847191460,8ptp4l0-21swapper/108:30:181
2847191460,3ptp4l0-21swapper/207:23:412
2847191460,3ptp4l0-21swapper/111:17:531
2847191460,3ptp4l0-21swapper/111:09:471
2847191460,3ptp4l0-21swapper/107:32:361
2847191460,3ptp4l0-21swapper/107:28:291
2103199468,2cyclictest121rcu_preempt08:30:273
2103199463,7cyclictest41-21ksoftirqd/312:10:003
2847191450,9ptp4l0-21swapper/208:21:042
2847191450,10ptp4l0-21swapper/211:12:152
2103199454,7cyclictest41-21ksoftirqd/310:50:273
21031994517,7cyclictest41-21ksoftirqd/308:10:283
2102899457,6cyclictest9-21ksoftirqd/012:35:180
2102899450,3cyclictest121rcu_preempt08:19:590
2847191440,9ptp4l12394-21df_abs08:00:152
2847191440,9ptp4l0-21swapper/212:31:442
2847191440,9ptp4l0-21swapper/211:59:312
2847191440,9ptp4l0-21swapper/208:49:402
2847191440,8ptp4l0-21swapper/108:27:061
2847191440,3ptp4l0-21swapper/109:30:431
2847191440,3ptp4l0-21swapper/011:24:360
2847191440,10ptp4l0-21swapper/211:05:202
2103199443,3cyclictest121rcu_preempt12:15:283
21031994426,9cyclictest41-21ksoftirqd/309:35:183
2102899444,5cyclictest9-21ksoftirqd/010:31:410
2849491430,10getstats0-21swapper/211:33:142
2849491430,10getstats0-21swapper/209:02:392
2847191430,9ptp4l0-21swapper/211:16:222
2847191430,9ptp4l0-21swapper/211:01:272
2847191430,9ptp4l0-21swapper/209:27:102
2847191430,9ptp4l0-21swapper/208:07:432
2847191430,9ptp4l0-21swapper/110:03:541
2847191430,7ptp4l0-21swapper/007:05:150
2847191430,5ptp4l11690-21perl12:35:172
2847191430,5ptp4l0-21swapper/207:10:122
21028994322,7cyclictest9-21ksoftirqd/009:53:000
21028994317,8cyclictest9-21ksoftirqd/009:20:130
2849491420,9getstats0-21swapper/209:47:512
2849491420,10getstats0-21swapper/212:27:082
2849491420,10getstats0-21swapper/209:52:052
2847191420,9ptp4l0-21swapper/212:17:272
2847191420,9ptp4l0-21swapper/210:58:172
2847191420,9ptp4l0-21swapper/207:47:072
2847191420,9ptp4l0-21swapper/207:33:102
2847191420,8ptp4l0-21swapper/209:17:472
2847191420,8ptp4l0-21swapper/208:18:502
2847191420,8ptp4l0-21swapper/207:53:402
2847191420,4ptp4l6062-21irqstats07:45:191
2847191420,4ptp4l0-21swapper/107:15:581
2849491410,10getstats0-21swapper/210:07:522
2847191410,9ptp4l0-21swapper/211:39:572
2847191410,5ptp4l8455-21hddtemp_smartct10:10:171
2847191410,5ptp4l21645-21df08:20:151
2847191410,4ptp4l4901-21iostat12:20:181
2847191410,4ptp4l31719-21memory08:40:221
2847191410,4ptp4l27135-21df_inode10:50:171
2847191410,4ptp4l0-21swapper/210:20:442
2847191410,4ptp4l0-21swapper/209:35:202
2847191410,4ptp4l0-21swapper/209:11:102
2847191410,3ptp4l23376-21apt-get07:15:142
2847191410,3ptp4l18074-21iostat_ios10:30:201
2847191410,3ptp4l13457-21meminfo09:10:201
2847191410,3ptp4l1221-21iostat08:45:191
2102899410,2cyclictest121rcu_preempt09:40:000
2847191400,5ptp4l2031-21ls09:55:231
2847191400,5ptp4l0-21swapper/211:54:592
2847191400,4ptp4l30857-21python12:05:271
2847191400,4ptp4l29368-21iostat_ios09:45:181
2847191400,4ptp4l27768-21iostat_ios12:00:201
2847191400,4ptp4l27768-21iostat_ios12:00:201
2847191400,4ptp4l20586-21ntp_states09:25:231
2847191400,4ptp4l0-21swapper/212:14:252
2847191400,4ptp4l0-21swapper/212:09:532
2847191400,4ptp4l0-21swapper/212:00:542
2847191400,4ptp4l0-21swapper/212:00:532
2847191400,4ptp4l0-21swapper/211:43:592
2847191400,4ptp4l0-21swapper/211:23:492
2847191400,4ptp4l0-21swapper/210:52:452
2847191400,4ptp4l0-21swapper/210:44:152
2847191400,4ptp4l0-21swapper/210:37:112
2847191400,4ptp4l0-21swapper/210:30:322
2847191400,4ptp4l0-21swapper/209:21:212
2847191400,4ptp4l0-21swapper/209:07:322
2847191400,4ptp4l0-21swapper/208:50:372
2847191400,4ptp4l0-21swapper/208:44:212
2847191400,4ptp4l0-21swapper/208:30:072
2847191400,4ptp4l0-21swapper/207:41:212
2847191400,4ptp4l0-21swapper/207:26:282
2847191400,4ptp4l0-21swapper/111:55:171
2847191400,4ptp4l0-21swapper/111:00:351
2847191400,4ptp4l0-21swapper/110:58:211
2847191400,4ptp4l0-21swapper/108:02:271
2847191400,3ptp4l3114-21df07:40:171
2847191400,3ptp4l25644-21ntp_states10:45:251
2847191400,3ptp4l19531-21hddtemp_smartct08:15:191
2847191400,3ptp4l14678-21df08:05:151
2847191400,3ptp4l10936-21meminfo09:05:211
2847191390,4ptp4l6619-21sshd12:25:111
2847191390,4ptp4l32417-21/usr/sbin/munin09:50:251
2847191390,4ptp4l0-21swapper/210:45:492
2847191390,4ptp4l0-21swapper/210:16:252
2847191390,4ptp4l0-21swapper/210:00:312
2847191390,4ptp4l0-21swapper/209:59:222
2847191390,4ptp4l0-21swapper/209:40:082
2847191390,4ptp4l0-21swapper/208:56:112
2847191390,4ptp4l0-21swapper/208:25:082
2847191390,4ptp4l0-21swapper/108:58:471
2847191390,4ptp4l0-21swapper/107:22:001
2847191390,4ptp4l0-21swapper/107:10:221
2847191390,3ptp4l8709-21diskstats11:20:171
2847191390,3ptp4l3117-21ntp_states12:15:241
2847191390,3ptp4l28865-21/usr/sbin/munin08:35:171
2847191390,3ptp4l21138-21meminfo11:45:211
2847191390,3ptp4l18823-21meminfo11:40:231
2847191390,3ptp4l0-21swapper/110:35:141
2847191380,4ptp4l8226-21interrupts09:00:181
2847191380,3ptp4l6028-21diskstats10:05:171
2847191380,3ptp4l0-21swapper/111:27:021
2847191380,3ptp4l0-21swapper/109:20:131
186672235,11sleep30-21swapper/307:05:143
193112164,7sleep20-21swapper/207:05:202
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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