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2026-08-24 - 20:37
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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 highest latencies:
System rackdslot1.osadl.org (updated Mon Aug 24, 2026 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1410721760,2sleep01186399cyclictest09:30:280
1186499710,27cyclictest21462-21chrt09:47:541
1186499690,30cyclictest21912-21tr08:40:131
1186499690,27cyclictest29950-21timerwakeupswit07:45:281
1186499690,27cyclictest23963-21seq11:00:431
1186499690,25cyclictest27705-21ls07:40:251
1186499681,22cyclictest6955-21cat11:35:201
323272670,6sleep31186699cyclictest12:30:193
1186499670,29cyclictest14949-21chrt11:53:591
1186499670,28cyclictest17145-21taskset10:46:521
1186499669,19cyclictest4199-21latency08:00:211
1186499662,26cyclictest0-21swapper/111:25:281
1186499660,24cyclictest25136-21irqrtprio11:05:201
1186499650,31cyclictest24924-21cut09:55:191
1186499650,31cyclictest24924-21cut09:55:191
1186499650,23cyclictest28256-21cat10:00:281
1186499649,51cyclictest16372-21sort09:35:251
1186499641,60cyclictest15855-21iostat_ios11:55:191
1186499640,60cyclictest14970-21iostat07:15:171
1186499640,25cyclictest28313-21taskset08:54:191
1186499640,23cyclictest8497-21irqrtprio08:10:191
1186499640,23cyclictest19805-21irqrtprio07:25:191
1186499631,58cyclictest1514-21iostat_ios07:55:181
1186499631,23cyclictest788-21runrttasks10:10:441
1186499630,28cyclictest3538-21chrt12:38:201
1186499630,25cyclictest1317-21runrttasks11:34:091
1186499612,26cyclictest0-21swapper/110:35:151
1186499610,23cyclictest471-21chrt09:04:091
11863996127,4cyclictest9-21ksoftirqd/011:40:220
11863996122,5cyclictest9-21ksoftirqd/009:42:410
232082600,6sleep30-21swapper/311:00:223
1186499600,57cyclictest22362-21netstat07:30:201
1186499600,28cyclictest5183-21taskset09:13:381
1186499600,28cyclictest23609-21chrt09:50:591
1186499600,28cyclictest14416-21seq09:33:531
1186499600,26cyclictest12536-21taskset11:47:301
1186499600,25cyclictest19034-21taskset08:33:201
11863996029,8cyclictest9-21ksoftirqd/008:15:280
134491590,8ptp4l0-21swapper/307:05:113
134491590,4ptp4l0-21swapper/207:05:132
1186499591,28cyclictest25554-21taskset07:38:501
1186499590,28cyclictest9689-21chrt09:22:111
1186499590,28cyclictest26422-21seq12:15:521
1186499590,27cyclictest21739-21seq10:56:541
11863995929,6cyclictest9-21ksoftirqd/008:15:000
11863995927,6cyclictest9-21ksoftirqd/010:29:590
11863995925,5cyclictest9-21ksoftirqd/008:40:000
11863995915,4cyclictest9-21ksoftirqd/011:38:550
1186499580,30cyclictest7471-21seq09:18:291
1186499580,28cyclictest25826-21seq08:46:511
1186499580,28cyclictest13868-21taskset07:14:161
1186499580,21cyclictest32076-21taskset07:50:201
11863995827,4cyclictest9-21ksoftirqd/012:10:010
11863995826,6cyclictest9-21ksoftirqd/010:39:360
11863995826,4cyclictest9-21ksoftirqd/012:20:130
1186499571,27cyclictest19476-21taskset10:52:191
1186499570,29cyclictest31229-21seq12:28:201
1186499570,29cyclictest28817-21seq11:14:071
1186499570,28cyclictest2896-21seq09:08:461
1186499570,27cyclictest31022-21chrt10:09:451
1186499570,27cyclictest19500-21chrt12:03:101
1186499570,27cyclictest10378-21seq11:44:241
11863995726,4cyclictest9-21ksoftirqd/010:40:410
11863995724,4cyclictest9-21ksoftirqd/012:00:000
11863995723,4cyclictest9-21ksoftirqd/009:00:000
11863995722,6cyclictest9-21ksoftirqd/009:55:000
134491560,4ptp4l0-21swapper/211:20:122
134491560,3ptp4l0-21swapper/210:00:192
134491560,3ptp4l0-21swapper/007:25:130
1186499560,29cyclictest1247-21taskset12:34:281
1186499560,29cyclictest10321-21seq10:33:031
1186499560,27cyclictest18506-21seq07:21:471
1186499560,24cyclictest15142-21diskstats08:25:151
1186499560,24cyclictest15142-21diskstats08:25:151
11863995626,4cyclictest9-21ksoftirqd/008:33:070
11863995625,5cyclictest9-21ksoftirqd/010:50:130
11863995625,5cyclictest9-21ksoftirqd/010:30:190
11863995625,3cyclictest9-21ksoftirqd/007:31:290
134491550,4ptp4l0-21swapper/311:39:243
134491550,4ptp4l0-21swapper/211:10:292
134491550,3ptp4l27243-21ntpq07:40:200
134491550,3ptp4l0-21swapper/011:15:200
1186499550,30cyclictest14995-21seq10:43:461
1186499550,29cyclictest900-21seq11:21:571
1186499550,29cyclictest8074-21seq10:28:411
1186499550,29cyclictest28878-21seq12:22:381
1186499550,29cyclictest21652-21seq12:06:171
1186499550,29cyclictest12117-21seq09:28:481
1186499550,26cyclictest24082-21taskset12:13:031
11863995527,7cyclictest9-21ksoftirqd/007:45:280
11863995526,3cyclictest9-21ksoftirqd/010:10:140
11863995525,3cyclictest9-21ksoftirqd/010:56:340
11863995524,3cyclictest9-21ksoftirqd/007:36:060
11863995523,8cyclictest9-21ksoftirqd/012:28:370
11863995523,4cyclictest9-21ksoftirqd/009:05:130
11863995522,5cyclictest9-21ksoftirqd/007:20:140
11863995519,6cyclictest9-21ksoftirqd/007:15:120
134491540,5ptp4l0-21swapper/107:06:541
1186499541,19cyclictest10638-21hddtemp_smartct08:15:161
1186499540,31cyclictest31169-21seq11:19:481
1186499540,29cyclictest5597-21seq10:21:191
1186499540,29cyclictest3270-21seq10:16:141
1186499540,29cyclictest30418-21seq08:56:501
1186499540,27cyclictest14327-21seq08:21:521
11863995426,3cyclictest9-21ksoftirqd/007:10:190
11863995425,5cyclictest9-21ksoftirqd/012:00:150
11863995425,3cyclictest9-21ksoftirqd/012:16:050
11863995424,3cyclictest9-21ksoftirqd/008:51:250
11863995423,5cyclictest9-21ksoftirqd/009:15:160
11863995422,5cyclictest9-21ksoftirqd/010:00:190
11863995422,4cyclictest9-21ksoftirqd/009:25:190
11863995421,6cyclictest9-21ksoftirqd/011:45:130
11863995418,4cyclictest9-21ksoftirqd/009:10:270
134491530,5ptp4l0-21swapper/007:05:360
134491530,4ptp4l0-21swapper/211:06:072
134491530,4ptp4l0-21swapper/012:10:350
11863995325,4cyclictest9-21ksoftirqd/011:09:410
11863995324,3cyclictest9-21ksoftirqd/008:29:500
11863995324,3cyclictest9-21ksoftirqd/008:29:500
11863995322,5cyclictest9-21ksoftirqd/010:20:130
11863995322,4cyclictest9-21ksoftirqd/009:00:270
11863995319,5cyclictest9-21ksoftirqd/011:52:540
11863995318,5cyclictest9-21ksoftirqd/010:19:590
134491520,3ptp4l0-21swapper/008:08:100
1186499520,29cyclictest7487-21seq08:07:521
1186499520,28cyclictest17265-21taskset09:40:061
1186399523,3cyclictest9-21ksoftirqd/009:50:000
11863995224,3cyclictest9-21ksoftirqd/007:50:110
11863995223,4cyclictest9-21ksoftirqd/009:55:320
11863995223,4cyclictest9-21ksoftirqd/009:55:320
11863995218,5cyclictest9-21ksoftirqd/007:55:270
186122510,5sleep30-21swapper/309:40:263
11863995120,6cyclictest9-21ksoftirqd/011:05:010
11863995119,7cyclictest9-21ksoftirqd/008:45:140
11863995118,6cyclictest9-21ksoftirqd/010:05:130
11863995116,4cyclictest9-21ksoftirqd/011:25:000
1186599501,2cyclictest121rcu_preempt07:50:142
1186499500,27cyclictest21143-21seq08:35:561
11863995025,6cyclictest9-21ksoftirqd/009:20:130
134491490,9ptp4l3767-21apt-get11:30:122
134491490,4ptp4l0-21swapper/207:35:022
11863994917,4cyclictest9-21ksoftirqd/009:35:110
11865994836,10cyclictest33-21ksoftirqd/208:45:292
11865994815,4cyclictest33-21ksoftirqd/210:19:362
11863994821,6cyclictest9-21ksoftirqd/011:25:250
11863994819,8cyclictest9-21ksoftirqd/010:45:120
11863994817,4cyclictest9-21ksoftirqd/011:15:010
11863994815,5cyclictest9-21ksoftirqd/012:35:220
1186399481,3cyclictest9-21ksoftirqd/011:30:240
11865994726,17cyclictest33-21ksoftirqd/208:25:002
134491460,7ptp4l0-21swapper/207:10:422
134491460,4ptp4l0-21swapper/012:31:090
134491450,11ptp4l0-21swapper/211:25:102
1186599456,2cyclictest33-21ksoftirqd/212:10:012
11865994518,9cyclictest33-21ksoftirqd/209:05:002
1186599451,2cyclictest121rcu_preempt11:50:592
134491440,4ptp4l31463-21apt-get11:20:123
11865994438,3cyclictest33-21ksoftirqd/211:20:002
11865994438,3cyclictest33-21ksoftirqd/211:05:002
11865994420,12cyclictest33-21ksoftirqd/207:25:162
11865994412,6cyclictest33-21ksoftirqd/208:29:322
11865994412,6cyclictest33-21ksoftirqd/208:29:322
1186399441,2cyclictest121rcu_preempt08:00:220
134491430,9ptp4l0-21swapper/211:47:502
134491430,9ptp4l0-21swapper/209:50:472
134491430,9ptp4l0-21swapper/208:03:052
134491430,5ptp4l0-21swapper/208:10:202
134491430,3ptp4l2318-21gnome-shell12:24:583
11865994328,4cyclictest33-21ksoftirqd/209:35:002
11865994326,13cyclictest33-21ksoftirqd/208:50:162
11865994325,9cyclictest33-21ksoftirqd/209:55:272
11865994325,9cyclictest33-21ksoftirqd/209:55:272
1186599431,2cyclictest121rcu_preempt08:08:562
1186399431,2cyclictest121rcu_preempt08:40:210
134491420,9ptp4l0-21swapper/210:30:272
134491420,9ptp4l0-21swapper/207:58:122
134491420,5ptp4l0-21swapper/311:30:123
134491420,5ptp4l0-21swapper/307:10:133
134491420,4ptp4l21524-21df07:30:122
11865994237,3cyclictest33-21ksoftirqd/207:20:132
11865994236,3cyclictest33-21ksoftirqd/212:27:592
11865994236,3cyclictest33-21ksoftirqd/208:20:002
11865994236,3cyclictest33-21ksoftirqd/207:19:592
11865994235,3cyclictest33-21ksoftirqd/212:15:592
11865994229,10cyclictest33-21ksoftirqd/209:40:392
11865994217,8cyclictest33-21ksoftirqd/212:35:282
11865994213,4cyclictest33-21ksoftirqd/210:29:592
11865994212,7cyclictest33-21ksoftirqd/210:54:152
1186599420,2cyclictest121rcu_preempt12:30:302
134491410,4ptp4l15183-21df09:35:123
134491410,4ptp4l0-21swapper/209:36:032
134491410,3ptp4l30433-21ntp_states12:25:223
134491410,3ptp4l29004-21apt-get10:05:122
1186599415,6cyclictest33-21ksoftirqd/209:16:042
11865994135,3cyclictest33-21ksoftirqd/212:03:592
11865994135,3cyclictest33-21ksoftirqd/210:45:002
11865994135,3cyclictest33-21ksoftirqd/207:50:002
11865994130,8cyclictest33-21ksoftirqd/208:30:272
11865994126,12cyclictest33-21ksoftirqd/212:23:592
1186599411,3cyclictest0-21swapper/208:59:072
1186599411,2cyclictest121rcu_preempt11:55:052
11863994136,3cyclictest9-21ksoftirqd/008:20:150
134491400,4ptp4l0-21swapper/211:38:002
134491400,4ptp4l0-21swapper/207:41:422
134491400,3ptp4l27272-21iostat10:00:183
1186599409,4cyclictest33-21ksoftirqd/210:11:162
11865994036,2cyclictest33-21ksoftirqd/208:35:182
11865994035,3cyclictest33-21ksoftirqd/210:35:152
11865994035,2cyclictest33-21ksoftirqd/210:55:172
11865994034,3cyclictest33-21ksoftirqd/212:11:592
11865994012,7cyclictest33-21ksoftirqd/211:40:212
134491390,5ptp4l0-21swapper/307:50:093
134491390,5ptp4l0-21swapper/307:28:083
134491390,4ptp4l0-21swapper/312:02:103
134491390,4ptp4l0-21swapper/311:53:263
134491390,4ptp4l0-21swapper/311:25:263
134491390,4ptp4l0-21swapper/310:45:373
134491390,4ptp4l0-21swapper/310:34:123
134491390,4ptp4l0-21swapper/308:25:203
134491390,4ptp4l0-21swapper/308:25:203
134491390,4ptp4l0-21swapper/307:58:083
134491390,4ptp4l0-21swapper/209:46:042
134491390,4ptp4l0-21swapper/209:26:132
134491390,4ptp4l0-21swapper/209:21:322
134491390,2ptp4l28418-21ls11:10:283
1186599390,6cyclictest121rcu_preempt08:40:172
134491380,4ptp4l30500-21awk11:15:263
134491380,4ptp4l0-21swapper/311:47:023
134491380,4ptp4l0-21swapper/309:26:143
134491380,4ptp4l0-21swapper/308:40:163
134491380,4ptp4l0-21swapper/308:20:123
134491380,4ptp4l0-21swapper/307:45:023
134491380,4ptp4l0-21swapper/307:40:163
134491380,4ptp4l0-21swapper/307:38:003
134491380,4ptp4l0-21swapper/307:22:333
134491380,4ptp4l0-21swapper/210:48:362
134491380,4ptp4l0-21swapper/209:13:322
134491380,4ptp4l0-21swapper/209:05:492
134491380,3ptp4l0-21swapper/210:21:522
11866993833,3cyclictest41-21ksoftirqd/307:30:103
134491370,4ptp4l0-21swapper/312:15:243
134491370,4ptp4l0-21swapper/312:10:283
134491370,4ptp4l0-21swapper/311:56:503
134491370,4ptp4l0-21swapper/311:05:203
134491370,4ptp4l0-21swapper/310:55:133
134491370,4ptp4l0-21swapper/310:37:163
134491370,4ptp4l0-21swapper/310:07:453
134491370,4ptp4l0-21swapper/309:58:043
134491370,4ptp4l0-21swapper/309:58:043
134491370,4ptp4l0-21swapper/309:45:173
134491370,4ptp4l0-21swapper/309:20:263
134491370,4ptp4l0-21swapper/309:00:173
134491370,4ptp4l0-21swapper/308:00:403
134491370,4ptp4l0-21swapper/307:15:113
134491370,3ptp4l0-21swapper/308:16:233
11866993731,4cyclictest41-21ksoftirqd/310:23:193
46198360,4rtkit-daemon0-21swapper/309:52:283
134491360,4ptp4l0-21swapper/311:43:543
134491360,4ptp4l0-21swapper/310:54:523
134491360,4ptp4l0-21swapper/310:40:123
134491360,4ptp4l0-21swapper/308:51:003
134491360,4ptp4l0-21swapper/308:11:223
134491360,4ptp4l0-21swapper/308:08:323
134491360,3ptp4l0-21swapper/312:35:293
134491360,3ptp4l0-21swapper/312:05:233
134491360,3ptp4l0-21swapper/310:28:203
134491360,3ptp4l0-21swapper/308:35:213
134491360,2ptp4l18559-21ssh08:30:273
46198350,4rtkit-daemon0-21swapper/309:17:593
134491350,4ptp4l3054-21timerwakeupswit10:15:263
134491350,3ptp4l0-21swapper/310:14:323
134491340,4ptp4l0-21swapper/309:05:503
11866993126,3cyclictest41-21ksoftirqd/308:49:393
11866993024,4cyclictest41-21ksoftirqd/308:55:333
11866992924,3cyclictest41-21ksoftirqd/309:30:123
11866992519,4cyclictest41-21ksoftirqd/309:13:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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