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2026-08-17 - 18:27
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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 rackdslot2.osadl.org (updated Mon Aug 17, 2026 12:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
247952245199,35sleep30-21swapper/307:08:593
247952245199,35sleep30-21swapper/307:08:583
245822234168,22sleep20-21swapper/207:06:122
245822234168,22sleep20-21swapper/207:06:122
246422231202,19sleep00-21swapper/007:06:590
246422231202,19sleep00-21swapper/007:06:590
248802229167,50sleep10-21swapper/107:09:571
248802229167,50sleep10-21swapper/107:09:571
2860221390,3sleep02517699cyclictest07:15:210
2440821270,2sleep20-21swapper/210:30:162
25178997032,6cyclictest33-21ksoftirqd/207:35:012
139291700,1ptp4l391rcuc/308:55:273
25178996633,5cyclictest33-21ksoftirqd/208:10:002
25178996632,6cyclictest33-21ksoftirqd/211:00:012
188372660,1sleep318839-21ptp4l-jitter12:30:243
25178996533,4cyclictest33-21ksoftirqd/210:10:182
25178996530,5cyclictest33-21ksoftirqd/208:20:212
25178996530,4cyclictest33-21ksoftirqd/209:20:002
25178996530,4cyclictest33-21ksoftirqd/207:40:232
25178996529,7cyclictest33-21ksoftirqd/207:20:162
25178996430,7cyclictest33-21ksoftirqd/211:20:232
25178996430,7cyclictest33-21ksoftirqd/211:20:232
25178996430,7cyclictest33-21ksoftirqd/209:25:272
25178996430,4cyclictest33-21ksoftirqd/209:40:182
25178996427,4cyclictest33-21ksoftirqd/212:25:202
25178996332,3cyclictest33-21ksoftirqd/211:10:162
25178996331,4cyclictest33-21ksoftirqd/210:20:012
25178996331,3cyclictest33-21ksoftirqd/212:15:252
25178996328,5cyclictest33-21ksoftirqd/211:30:012
25178996323,10cyclictest33-21ksoftirqd/209:05:132
25178996319,7cyclictest33-21ksoftirqd/209:34:592
25178996234,4cyclictest33-21ksoftirqd/212:20:162
25178996231,4cyclictest33-21ksoftirqd/209:45:272
25178996231,3cyclictest33-21ksoftirqd/208:00:252
25178996230,7cyclictest33-21ksoftirqd/212:00:152
25178996230,3cyclictest33-21ksoftirqd/208:25:162
25178996229,6cyclictest33-21ksoftirqd/208:45:272
25178996227,6cyclictest33-21ksoftirqd/212:05:262
25178996226,4cyclictest33-21ksoftirqd/210:35:182
211432620,2sleep10-21swapper/111:30:031
25178996133,3cyclictest33-21ksoftirqd/208:15:182
25178996131,4cyclictest33-21ksoftirqd/207:50:152
25178996131,3cyclictest33-21ksoftirqd/211:55:242
25178996131,3cyclictest33-21ksoftirqd/209:25:002
25178996131,3cyclictest33-21ksoftirqd/208:40:292
25178996130,4cyclictest33-21ksoftirqd/211:50:182
25178996130,4cyclictest33-21ksoftirqd/211:50:182
25178996129,4cyclictest33-21ksoftirqd/210:00:012
25178996128,9cyclictest33-21ksoftirqd/208:50:092
25178996127,8cyclictest33-21ksoftirqd/209:00:162
25178996126,6cyclictest33-21ksoftirqd/211:45:152
25178996125,6cyclictest33-21ksoftirqd/211:40:222
25178996125,4cyclictest33-21ksoftirqd/207:35:162
25177996111,11cyclictest10968-21cut10:00:231
25178996032,3cyclictest33-21ksoftirqd/208:35:172
25178996031,3cyclictest33-21ksoftirqd/209:10:292
25178996029,4cyclictest33-21ksoftirqd/212:35:122
25178996028,9cyclictest33-21ksoftirqd/208:10:252
25178996028,4cyclictest33-21ksoftirqd/212:30:182
25178996028,3cyclictest33-21ksoftirqd/211:35:172
25178996027,4cyclictest33-21ksoftirqd/211:15:172
25178996025,4cyclictest33-21ksoftirqd/210:50:002
25178996023,4cyclictest33-21ksoftirqd/210:50:262
25178996023,4cyclictest33-21ksoftirqd/210:50:262
25176996027,4cyclictest9-21ksoftirqd/010:15:000
25178995931,4cyclictest33-21ksoftirqd/209:35:172
25178995930,9cyclictest33-21ksoftirqd/210:20:182
25178995930,4cyclictest33-21ksoftirqd/208:55:132
25178995929,4cyclictest33-21ksoftirqd/210:40:212
25178995928,6cyclictest33-21ksoftirqd/207:25:172
25178995924,7cyclictest33-21ksoftirqd/208:30:132
2517799598,11cyclictest21348-21/usr/sbin/munin12:35:251
25178995828,8cyclictest33-21ksoftirqd/210:05:252
25178995827,3cyclictest33-21ksoftirqd/207:10:232
25178995827,3cyclictest33-21ksoftirqd/207:10:232
25178995826,7cyclictest33-21ksoftirqd/212:10:192
25178995823,9cyclictest33-21ksoftirqd/207:15:142
25178995821,9cyclictest33-21ksoftirqd/211:00:142
2517799588,9cyclictest25151-21chrt09:22:581
2517799587,9cyclictest24760-21/usr/sbin/munin10:30:201
2517799587,12cyclictest4520-21cat08:40:181
2517799586,12cyclictest428-21gmain08:32:521
25176995826,10cyclictest9-21ksoftirqd/010:55:170
25179995716,3cyclictest41-21ksoftirqd/309:44:333
25178995730,3cyclictest33-21ksoftirqd/207:45:142
25178995727,6cyclictest33-21ksoftirqd/211:05:152
25178995726,3cyclictest33-21ksoftirqd/209:50:182
25178995726,3cyclictest33-21ksoftirqd/209:50:182
25178995718,8cyclictest33-21ksoftirqd/207:55:272
2517799578,8cyclictest22740-21taskset09:17:461
2517799577,9cyclictest31975-21chrt07:23:481
25179995611,9cyclictest41-21ksoftirqd/307:50:233
25178995618,8cyclictest33-21ksoftirqd/210:25:182
2517799566,10cyclictest156622chrt11:19:481
25177995610,12cyclictest1308-21runrttasks08:08:121
25179995515,3cyclictest41-21ksoftirqd/308:51:543
2517799558,16cyclictest29584-21taskset07:18:451
2517799558,16cyclictest18712-21chrt10:15:381
2517799558,15cyclictest15500-21chrt09:01:451
2517799558,12cyclictest2595-21taskset11:57:201
2517799558,11cyclictest5705-21interrupts09:50:161
2517799558,11cyclictest5705-21interrupts09:50:151
2517799556,13cyclictest7735-21grep11:00:251
2517699554,10cyclictest9-21ksoftirqd/008:50:220
25179995417,3cyclictest41-21ksoftirqd/310:28:133
25179995416,5cyclictest41-21ksoftirqd/311:55:013
25179995416,5cyclictest41-21ksoftirqd/311:55:013
25179995415,5cyclictest41-21ksoftirqd/308:45:003
25179995413,7cyclictest41-21ksoftirqd/309:00:243
2517799549,12cyclictest32660-21taskset11:53:311
2517799549,12cyclictest32660-21taskset11:53:311
2517799548,10cyclictest4866-21seq12:00:511
2517799547,10cyclictest11947-21cat07:50:001
25176995422,7cyclictest9-21ksoftirqd/012:10:260
25179995317,3cyclictest41-21ksoftirqd/307:38:153
25179995316,6cyclictest41-21ksoftirqd/312:07:543
25179995316,3cyclictest41-21ksoftirqd/312:01:253
25179995316,3cyclictest41-21ksoftirqd/308:22:493
2517899539,3cyclictest33-21ksoftirqd/210:00:222
25176995322,7cyclictest9-21ksoftirqd/009:10:230
25176995318,4cyclictest9-21ksoftirqd/011:00:130
284792520,2sleep10-21swapper/109:30:171
2517999523,6cyclictest401ktimersoftd/310:00:013
2517999523,6cyclictest401ktimersoftd/307:20:193
25179995217,7cyclictest41-21ksoftirqd/311:07:173
25179995215,7cyclictest41-21ksoftirqd/312:35:393
2517899528,3cyclictest33-21ksoftirqd/211:30:162
2517699525,7cyclictest217-21systemd-journal11:25:010
2517699525,7cyclictest217-21systemd-journal11:25:010
2517699525,5cyclictest9-21ksoftirqd/009:00:180
2517699525,3cyclictest121rcu_preempt10:40:150
2517999511,6cyclictest22629-21cut08:10:203
25179995116,8cyclictest41-21ksoftirqd/311:32:083
25179995116,3cyclictest41-21ksoftirqd/307:46:473
25179995114,7cyclictest41-21ksoftirqd/310:32:473
2517799519,11cyclictest10439-21chrt08:50:341
2517799518,12cyclictest26241-21chrt08:19:121
2517699516,7cyclictest9-21ksoftirqd/011:30:190
2517699516,4cyclictest9-21ksoftirqd/010:05:140
2517699512,5cyclictest9-21ksoftirqd/012:05:280
25176995121,5cyclictest9-21ksoftirqd/009:45:170
2517999503,7cyclictest401ktimersoftd/309:35:153
2517999502,6cyclictest30498-21cat11:50:003
2517999502,6cyclictest1077-21cat08:35:013
2517999501,5cyclictest28062-21fschecks_time07:15:163
25179995014,7cyclictest41-21ksoftirqd/311:29:473
2517799508,18cyclictest747-21taskset10:47:321
2517799507,11cyclictest1308-21runrttasks08:04:591
2517699505,8cyclictest9-21ksoftirqd/009:40:230
2517699504,9cyclictest9-21ksoftirqd/011:45:280
2517699502,7cyclictest9-21ksoftirqd/008:35:250
2517999493,6cyclictest13931-21awk10:05:283
2517999492,6cyclictest401ktimersoftd/311:55:143
2517999491,6cyclictest8610-21latency_hist08:50:013
2517999491,6cyclictest13752-21tr11:15:123
25179994913,2cyclictest41-21ksoftirqd/310:59:503
2517799498,11cyclictest465-21/usr/sbin/munin07:25:171
2517799498,11cyclictest30236-21taskset11:47:451
2517799498,10cyclictest17278-21/usr/sbin/munin11:20:221
2517799498,10cyclictest17278-21/usr/sbin/munin11:20:221
2517799494,11cyclictest6569-21needreboot12:05:221
2517699494,7cyclictest9-21ksoftirqd/010:05:000
2517699493,8cyclictest9-21ksoftirqd/010:20:280
2517699493,7cyclictest9-21ksoftirqd/011:20:010
25176994923,3cyclictest9-21ksoftirqd/008:55:260
25176994923,3cyclictest9-21ksoftirqd/007:30:170
2517699490,6cyclictest9-21ksoftirqd/008:40:040
2517699490,5cyclictest9-21ksoftirqd/008:20:000
2517999483,7cyclictest401ktimersoftd/307:25:193
2517999482,7cyclictest4073-21awk07:30:273
2517999481,7cyclictest31906-21irqrtprio10:45:203
2517999481,6cyclictest1782-21if_enp1s010:50:183
2517999481,6cyclictest1782-21if_enp1s010:50:183
2517999481,6cyclictest13638-21cat12:20:213
25179994815,3cyclictest41-21ksoftirqd/309:07:103
2517999480,7cyclictest401ktimersoftd/312:10:283
2517999480,7cyclictest25918-21/usr/sbin/munin11:40:223
2517999480,7cyclictest15973-21cat07:55:273
2517999480,5cyclictest401ktimersoftd/309:45:183
2517799488,12cyclictest7889-21cat12:10:131
2517799488,11cyclictest22991-21/usr/sbin/munin08:10:221
2517799488,10cyclictest3370-21/usr/sbin/munin09:45:181
25177994811,10cyclictest27122-21/usr/sbin/munin11:40:221
2517699484,5cyclictest9-21ksoftirqd/007:35:140
2517699483,8cyclictest9-21ksoftirqd/009:35:260
2517699482,7cyclictest9-21ksoftirqd/009:55:170
2517699482,6cyclictest9-21ksoftirqd/010:30:190
2517699481,7cyclictest9-21ksoftirqd/008:00:260
2517999475,7cyclictest22138-21rt-features09:15:233
2517999474,9cyclictest41-21ksoftirqd/309:10:253
2517999471,6cyclictest27252-21awk09:25:283
2517999470,6cyclictest401ktimersoftd/308:25:253
2517799478,12cyclictest28564-21taskset08:23:221
2517799478,10cyclictest2330-21sendmail-mta09:43:591
2517799478,10cyclictest18819-21df11:25:141
2517799477,11cyclictest2449-21/usr/sbin/munin08:35:231
2517799477,11cyclictest13897-21rt-features12:20:241
2517699479,3cyclictest9-21ksoftirqd/011:26:550
2517699476,7cyclictest9-21ksoftirqd/011:55:150
2517699474,4cyclictest9-21ksoftirqd/011:10:150
2517699472,8cyclictest9-21ksoftirqd/008:25:160
2517699472,5cyclictest9-21ksoftirqd/007:25:000
25176994720,3cyclictest9-21ksoftirqd/007:45:040
2517699471,7cyclictest101ktimersoftd/009:05:220
2517699471,6cyclictest9-21ksoftirqd/011:40:140
2517999463,6cyclictest401ktimersoftd/307:12:313
2517999463,6cyclictest401ktimersoftd/307:12:313
2517799468,11cyclictest12414-21awk08:55:221
2517799467,9cyclictest24886-21/usr/sbin/munin11:35:231
2517799467,11cyclictest16333-21/usr/sbin/munin12:25:251
2517799466,14cyclictest2767-21threads10:50:271
2517799466,14cyclictest2767-21threads10:50:261
2517799465,9cyclictest25950-21/usr/sbin/munin09:25:161
2517699465,4cyclictest9-21ksoftirqd/012:20:240
2517699464,5cyclictest23590-21chrt08:10:410
2517699463,8cyclictest9-21ksoftirqd/012:30:160
25176994620,3cyclictest9-21ksoftirqd/010:48:090
2517699461,7cyclictest9-21ksoftirqd/009:51:590
2517699461,7cyclictest9-21ksoftirqd/009:51:590
2517999452,5cyclictest401ktimersoftd/311:00:143
2517999450,6cyclictest401ktimersoftd/311:35:233
2517999450,5cyclictest401ktimersoftd/310:35:203
2517999450,5cyclictest401ktimersoftd/309:20:263
2517799456,14cyclictest28880-21apt10:40:131
2517799456,11cyclictest21217-21chrt10:21:231
2517699455,8cyclictest9-21ksoftirqd/011:05:250
2517699453,2cyclictest121rcu_preempt11:55:000
2517699453,2cyclictest121rcu_preempt11:55:000
25176994530,4cyclictest9-21ksoftirqd/008:20:290
2517699452,12cyclictest9-21ksoftirqd/008:30:130
2517699451,6cyclictest9-21ksoftirqd/012:00:200
2517999447,6cyclictest41-21ksoftirqd/308:19:553
2517999444,7cyclictest41-21ksoftirqd/312:27:083
2517999443,6cyclictest401ktimersoftd/309:30:283
2517999441,6cyclictest29935-21cat10:40:233
2517999440,8cyclictest401ktimersoftd/308:10:003
2517999440,7cyclictest401ktimersoftd/308:35:273
2517799445,15cyclictest26778-21ls07:10:271
2517799445,15cyclictest26778-21ls07:10:271
2517699443,2cyclictest121rcu_preempt10:55:010
2517699443,2cyclictest121rcu_preempt10:55:010
25176994427,5cyclictest9-21ksoftirqd/009:22:300
2517699442,6cyclictest9-21ksoftirqd/007:10:230
2517699442,6cyclictest9-21ksoftirqd/007:10:230
25176994422,4cyclictest9-21ksoftirqd/007:30:010
2517699440,8cyclictest9-21ksoftirqd/012:25:280
2517699440,5cyclictest101ktimersoftd/008:45:220
2517999430,5cyclictest21646-21latency_hist10:25:003
2517799437,11cyclictest6786-21runrttasks07:36:411
2517799436,8cyclictest14864-21df10:10:181
2517699437,4cyclictest9-21ksoftirqd/009:30:280
25176994339,2cyclictest101ktimersoftd/012:35:140
2517699432,5cyclictest9-21ksoftirqd/010:35:280
2517699431,5cyclictest25284-21users11:35:270
2517699430,6cyclictest9-21ksoftirqd/009:25:150
139291430,0ptp4l401ktimersoftd/308:00:073
2517999424,6cyclictest401ktimersoftd/311:14:593
25179994223,8cyclictest41-21ksoftirqd/309:52:363
25179994223,8cyclictest41-21ksoftirqd/309:52:353
2517799428,21cyclictest4634-21cat07:35:011
2517799427,7cyclictest28232-21users10:35:271
2517799426,16cyclictest18378-21apt-get09:10:131
2517799425,11cyclictest0-21swapper/112:20:001
25176994213,3cyclictest9-21ksoftirqd/008:08:450
2517999410,6cyclictest401ktimersoftd/307:40:153
2517799416,10cyclictest0-21swapper/109:05:201
2517699412,5cyclictest9-21ksoftirqd/010:25:130
25176994123,4cyclictest9-21ksoftirqd/010:15:170
2517699410,6cyclictest9-21ksoftirqd/012:15:140
2517699410,6cyclictest9-21ksoftirqd/007:50:280
139291410,0ptp4l401ktimersoftd/310:17:093
2517999401,7cyclictest14562-21/usr/sbin/munin10:10:293
2517799408,11cyclictest23724-21seq10:28:121
2517799406,9cyclictest15815-21systemctl07:55:251
2517799405,18cyclictest4503-21irqrtprio10:55:181
2517799404,8cyclictest8896-21ls07:40:261
25176994019,3cyclictest9-21ksoftirqd/007:40:440
2517999392,7cyclictest41-21ksoftirqd/312:19:013
2517799397,10cyclictest105182sleep111:07:171
2517699392,7cyclictest9-21ksoftirqd/009:15:140
25176993919,9cyclictest9-21ksoftirqd/007:55:100
2517799389,11cyclictest7518-21/usr/sbin/munin08:45:251
2517799387,17cyclictest29750-21cut08:25:201
2517999372,6cyclictest401ktimersoftd/311:20:123
2517999372,6cyclictest401ktimersoftd/311:20:123
2517999371,6cyclictest11608-21sshd10:00:353
2517799379,13cyclictest30348-21/usr/sbin/munin09:35:131
2517799375,16cyclictest428-21gmain07:54:551
2517799367,10cyclictest13328-21grep10:05:231
25177993610,11cyclictest12312-21gzip11:10:241
2517799356,17cyclictest18145-21interrupts12:30:181
25177993529,3cyclictest25-21ksoftirqd/109:55:261
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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