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2026-05-18 - 11:31
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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 Mon May 18, 2026 00:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
303142860,5sleep330318-21irqrtprio23:50:203
29081997829,5cyclictest9-21ksoftirqd/021:00:260
2908499721,32cyclictest26557-21chrt22:32:213
29082997124,7cyclictest25-21ksoftirqd/120:00:281
2908499700,42cyclictest6761-21cut19:30:173
2908499700,25cyclictest22155-21egrep20:05:143
129732690,6sleep22908399cyclictest22:04:592
2908499681,23cyclictest5289-21cut00:05:183
2908499670,33cyclictest7817-21sed00:10:183
29082996731,9cyclictest25-21ksoftirqd/121:15:011
29081996733,3cyclictest9-21ksoftirqd/020:40:180
2908499667,18cyclictest20389-21cpuspeed_turbos23:30:123
29084996611,17cyclictest11374-21cat23:10:183
2908499660,27cyclictest8568-21grep23:05:133
2908499660,22cyclictest30594-21cat21:30:263
29081996630,5cyclictest9-21ksoftirqd/023:55:210
29081996628,9cyclictest9-21ksoftirqd/021:20:290
2908499651,29cyclictest14972-21taskset22:06:243
2908499650,31cyclictest21043-21cat22:20:203
2908499650,29cyclictest23417-21phc2sys21:15:283
2908499650,26cyclictest3935-21df_abs19:25:133
29082996526,3cyclictest25-21ksoftirqd/120:40:141
2908499640,28cyclictest26673-21chrt20:15:093
2908499640,28cyclictest17475-21taskset23:24:313
2908499640,25cyclictest1987-21grep00:00:133
29081996432,4cyclictest9-21ksoftirqd/020:35:010
2908499630,32cyclictest24058-21grep22:25:283
29082996333,4cyclictest25-21ksoftirqd/121:40:231
29081996359,2cyclictest101ktimersoftd/019:45:290
29081996331,4cyclictest9-21ksoftirqd/022:00:280
2908499622,19cyclictest0-21swapper/322:00:193
2908499620,25cyclictest18881-21grep00:35:133
29082996231,4cyclictest25-21ksoftirqd/121:25:161
29082996227,6cyclictest25-21ksoftirqd/123:25:151
29082996227,6cyclictest25-21ksoftirqd/123:25:151
29082996227,6cyclictest25-21ksoftirqd/100:00:191
29081996231,4cyclictest9-21ksoftirqd/022:55:240
2908499612,19cyclictest0-21swapper/321:25:183
2908499611,28cyclictest21599-21taskset20:01:513
2908499610,29cyclictest26124-21taskset20:11:033
2908499610,28cyclictest29029-21taskset23:46:463
29082996131,9cyclictest25-21ksoftirqd/100:35:231
29082996130,3cyclictest25-21ksoftirqd/121:05:201
29082996127,9cyclictest25-21ksoftirqd/122:00:241
29082996125,4cyclictest25-21ksoftirqd/121:20:291
29081996133,4cyclictest9-21ksoftirqd/021:15:270
29081996126,3cyclictest9-21ksoftirqd/021:50:200
29081996123,3cyclictest9-21ksoftirqd/022:45:130
134491610,8ptp4l0-21swapper/200:22:062
2908499601,29cyclictest5546-21taskset21:46:233
2908499601,29cyclictest5546-21taskset21:46:233
2908499600,28cyclictest723-21seq19:16:173
29082996032,4cyclictest25-21ksoftirqd/121:50:221
29081996024,9cyclictest9-21ksoftirqd/022:40:000
134491600,3ptp4l0-21swapper/220:45:142
2908499591,31cyclictest13492-21taskset00:22:153
29082995930,4cyclictest25-21ksoftirqd/100:15:141
29082995926,3cyclictest25-21ksoftirqd/123:35:251
224342590,4sleep20-21swapper/220:05:172
134491590,4ptp4l0-21swapper/219:30:322
134491590,4ptp4l0-21swapper/119:50:131
2908499581,24cyclictest12643-21apt19:45:003
2908499581,20cyclictest1415-21/usr/sbin/munin21:40:163
2908499580,27cyclictest5923-21taskset22:59:113
2908499580,27cyclictest3229-21taskset20:33:163
29082995826,6cyclictest25-21ksoftirqd/121:45:201
29082995826,6cyclictest25-21ksoftirqd/121:45:201
29081995821,3cyclictest9-21ksoftirqd/023:05:230
29081995818,6cyclictest9-21ksoftirqd/000:10:290
134491580,4ptp4l0-21swapper/119:25:231
134491580,3ptp4l0-21swapper/220:42:212
2908499571,23cyclictest13200-21diskstats19:45:153
2908499570,20cyclictest19523-21apt-get21:10:013
29082995729,4cyclictest25-21ksoftirqd/120:45:231
29082995711,3cyclictest25-21ksoftirqd/123:05:271
2908199578,6cyclictest9-21ksoftirqd/023:05:010
2908199574,8cyclictest9-21ksoftirqd/022:30:010
29081995730,5cyclictest9-21ksoftirqd/019:16:090
29081995722,8cyclictest9-21ksoftirqd/000:35:270
29081995721,3cyclictest9-21ksoftirqd/022:44:590
2908499560,27cyclictest30882-21taskset19:11:303
2908499560,27cyclictest13941-21seq00:25:023
2908499560,25cyclictest1440-21chrt23:56:543
29082995624,4cyclictest25-21ksoftirqd/123:14:381
29082995622,10cyclictest25-21ksoftirqd/119:20:191
29081995627,7cyclictest9-21ksoftirqd/000:05:010
29081995624,4cyclictest9-21ksoftirqd/020:50:000
134491560,3ptp4l0-21swapper/322:53:163
2908499551,27cyclictest31071-21taskset20:24:273
2908499550,28cyclictest869-21taskset20:28:363
29082995521,3cyclictest25-21ksoftirqd/120:55:181
2908199555,7cyclictest9-21ksoftirqd/019:31:170
29081995523,4cyclictest9-21ksoftirqd/020:00:210
134491550,3ptp4l0-21swapper/223:50:192
134491550,3ptp4l0-21swapper/223:25:162
134491550,3ptp4l0-21swapper/223:25:162
134491550,3ptp4l0-21swapper/019:05:210
2908499541,21cyclictest13776-21meminfo20:55:193
2908499540,27cyclictest7947-21taskset21:52:413
29082995417,4cyclictest25-21ksoftirqd/122:55:281
29082995412,3cyclictest25-21ksoftirqd/123:44:381
29081995433,6cyclictest9-21ksoftirqd/023:25:010
2908199542,9cyclictest9-21ksoftirqd/020:50:270
29081995425,3cyclictest9-21ksoftirqd/021:10:170
29081995422,9cyclictest9-21ksoftirqd/000:25:260
29081995421,6cyclictest9-21ksoftirqd/019:20:200
134491540,4ptp4l0-21swapper/222:43:552
134491540,4ptp4l0-21swapper/200:29:062
2908499530,28cyclictest31411-21taskset22:44:393
2908499530,28cyclictest19829-21taskset22:19:413
2908499530,27cyclictest28910-21seq22:37:203
2908299534,8cyclictest25-21ksoftirqd/122:50:011
29082995340,2cyclictest25-21ksoftirqd/100:25:171
2908299532,8cyclictest25-21ksoftirqd/122:00:011
29082995322,3cyclictest25-21ksoftirqd/121:40:001
29082995321,4cyclictest25-21ksoftirqd/123:30:131
29081995313,5cyclictest9-21ksoftirqd/023:37:070
134491530,5ptp4l0-21swapper/021:39:480
134491530,3ptp4l0-21swapper/219:48:582
29082995220,10cyclictest25-21ksoftirqd/119:30:141
2908199527,7cyclictest9-21ksoftirqd/020:35:140
2908199524,8cyclictest9-21ksoftirqd/022:18:420
2908199524,3cyclictest121rcu_preempt23:30:140
2908199524,10cyclictest9-21ksoftirqd/020:55:170
29081995227,2cyclictest9-21ksoftirqd/000:30:300
2908199521,8cyclictest9-21ksoftirqd/023:40:270
2908199521,8cyclictest9-21ksoftirqd/021:05:290
29081995218,4cyclictest9-21ksoftirqd/022:30:150
134491520,5ptp4l0-21swapper/119:08:181
134491520,4ptp4l0-21swapper/119:42:221
134491520,3ptp4l0-21swapper/220:54:502
134491520,3ptp4l0-21swapper/219:50:072
134491520,3ptp4l0-21swapper/219:16:592
2908299512,7cyclictest25-21ksoftirqd/120:30:291
2908299510,2cyclictest121rcu_preempt20:25:001
2908199517,2cyclictest9-21ksoftirqd/021:45:180
2908199517,2cyclictest9-21ksoftirqd/021:45:180
2908199516,7cyclictest9-21ksoftirqd/022:20:280
2908199516,2cyclictest9-21ksoftirqd/019:10:240
2908199515,8cyclictest9-21ksoftirqd/023:53:340
2908199514,8cyclictest9-21ksoftirqd/019:29:550
2908199514,10cyclictest9-21ksoftirqd/019:50:260
2908199512,8cyclictest9-21ksoftirqd/022:09:590
29081995117,3cyclictest9-21ksoftirqd/019:56:130
134491510,4ptp4l0-21swapper/223:45:282
134491510,3ptp4l0-21swapper/321:20:213
134491510,3ptp4l0-21swapper/200:16:252
2908499500,27cyclictest11360-21seq00:19:333
2908499500,26cyclictest10244-21taskset21:57:393
2908499500,25cyclictest19279-21runrttasks19:56:483
2908299503,6cyclictest25-21ksoftirqd/123:19:591
2908299502,9cyclictest25-21ksoftirqd/100:35:001
2908299502,8cyclictest25-21ksoftirqd/122:30:191
2908199504,9cyclictest9-21ksoftirqd/019:35:140
2908199503,8cyclictest9-21ksoftirqd/000:00:230
2908199503,3cyclictest9-21ksoftirqd/021:55:200
2908199501,6cyclictest9-21ksoftirqd/021:40:130
2908199501,6cyclictest23374-21find20:05:270
134491500,8ptp4l0-21swapper/200:08:212
134491500,4ptp4l0-21swapper/222:49:192
2908499491,29cyclictest843-21seq21:36:263
2908499490,28cyclictest1295-21runrttasks22:49:473
2908299493,7cyclictest25-21ksoftirqd/100:10:251
29082994931,9cyclictest25-21ksoftirqd/122:35:261
2908299492,6cyclictest25-21ksoftirqd/122:05:451
2908299491,9cyclictest25-21ksoftirqd/122:50:161
2908199494,8cyclictest9-21ksoftirqd/023:26:390
2908199494,8cyclictest9-21ksoftirqd/023:26:390
2908199494,3cyclictest9-21ksoftirqd/021:30:130
29081994930,10cyclictest9-21ksoftirqd/020:10:130
29081994925,4cyclictest9-21ksoftirqd/022:10:130
2908499480,29cyclictest26896-21seq23:44:303
2908299489,3cyclictest25-21ksoftirqd/120:37:371
2908299484,9cyclictest25-21ksoftirqd/120:05:191
2908299483,8cyclictest25-21ksoftirqd/119:10:271
29082994833,4cyclictest25-21ksoftirqd/120:15:161
29082994833,2cyclictest25-21ksoftirqd/123:55:011
29082994832,6cyclictest25-21ksoftirqd/122:25:191
29082994830,3cyclictest25-21ksoftirqd/120:25:181
2908199486,7cyclictest9-21ksoftirqd/023:45:140
2908199484,8cyclictest530-21sed20:25:270
2908199484,2cyclictest0-21swapper/023:10:160
29081994831,3cyclictest9-21ksoftirqd/022:50:180
29081994812,8cyclictest9-21ksoftirqd/023:15:190
2908199480,3cyclictest27340-21cut20:15:190
134491480,3ptp4l0-21swapper/223:18:432
134491480,3ptp4l0-21swapper/219:55:102
134491480,3ptp4l0-21swapper/122:13:591
2908499471,30cyclictest16856-21seq21:00:483
2908499470,29cyclictest8233-21runrttasks23:04:033
2908499470,28cyclictest14864-21seq23:15:503
2908499470,27cyclictest18488-21seq00:34:373
2908399472,4cyclictest121rcu_preempt19:25:252
2908399472,2cyclictest121rcu_preempt21:02:592
2908299479,3cyclictest25-21ksoftirqd/123:00:261
2908299474,5cyclictest25-21ksoftirqd/122:40:241
29082994732,4cyclictest25-21ksoftirqd/123:20:241
29082994731,4cyclictest25-21ksoftirqd/123:55:221
2908299471,6cyclictest241ktimersoftd/121:30:281
29082994713,3cyclictest25-21ksoftirqd/119:48:251
2908299470,9cyclictest25-21ksoftirqd/120:50:241
29081994735,3cyclictest9-21ksoftirqd/020:20:270
29081994733,4cyclictest9-21ksoftirqd/019:40:260
2908199471,6cyclictest9-21ksoftirqd/000:20:010
2908499462,41cyclictest0-21swapper/323:25:283
2908499462,41cyclictest0-21swapper/323:25:283
2908499460,29cyclictest17216-21seq22:10:443
2908499460,28cyclictest24491-21seq23:38:213
29083994635,9cyclictest33-21ksoftirqd/222:39:592
29082994632,4cyclictest25-21ksoftirqd/119:15:271
29082994631,4cyclictest25-21ksoftirqd/100:05:261
29082994625,6cyclictest25-21ksoftirqd/123:45:151
2908299460,8cyclictest25-21ksoftirqd/100:20:181
29081994629,9cyclictest9-21ksoftirqd/021:25:220
2908199460,3cyclictest12165-21awk00:20:170
134491460,3ptp4l0-21swapper/220:22:442
2908499451,29cyclictest19291-21seq21:07:293
29084994511,23cyclictest12752-21cut20:55:003
2908499450,28cyclictest15171-21chrt19:50:093
2908299455,3cyclictest25-21ksoftirqd/122:20:141
2908299453,5cyclictest25-21ksoftirqd/119:55:141
2908299451,5cyclictest25-21ksoftirqd/121:16:301
134491450,4ptp4l0-21swapper/220:16:252
2908499441,29cyclictest7901-21seq20:43:593
134491440,4ptp4l0-21swapper/223:00:032
134491440,4ptp4l0-21swapper/221:51:022
134491440,4ptp4l0-21swapper/220:12:392
2908499431,26cyclictest10067-21chrt20:47:193
2908499430,29cyclictest3354-21seq19:24:023
29083994337,3cyclictest33-21ksoftirqd/223:10:012
29083994325,5cyclictest33-21ksoftirqd/223:00:002
29082994339,2cyclictest241ktimersoftd/119:35:241
2908299430,8cyclictest25-21ksoftirqd/120:10:131
134691430,3getstats0-21swapper/320:35:233
134491430,4ptp4l24572-21apt-get21:20:132
29083994237,3cyclictest33-21ksoftirqd/220:40:012
29083994237,3cyclictest33-21ksoftirqd/200:40:012
29083994237,3cyclictest33-21ksoftirqd/200:05:002
29083994230,10cyclictest33-21ksoftirqd/223:10:212
2908299428,7cyclictest25-21ksoftirqd/121:03:041
29082994228,4cyclictest25-21ksoftirqd/122:20:011
134491420,4ptp4l7053-21apt-get00:10:132
134491420,4ptp4l31520-21apt-get21:35:132
134491420,4ptp4l22257-21apt-get21:15:152
134491420,4ptp4l0-21swapper/223:35:532
134491420,4ptp4l0-21swapper/222:51:542
29083994135,4cyclictest33-21ksoftirqd/222:18:522
29083994132,6cyclictest33-21ksoftirqd/222:15:002
134491410,5ptp4l0-21swapper/221:55:132
134491410,5ptp4l0-21swapper/219:35:132
134491410,4ptp4l22427-21apt-get22:25:112
134491410,4ptp4l1312-21apt-get19:20:142
2908399404,3cyclictest33-21ksoftirqd/221:50:002
2908399404,3cyclictest33-21ksoftirqd/221:50:002
29083994036,2cyclictest33-21ksoftirqd/200:31:552
134491400,4ptp4l19819-21apt-get23:30:042
134491400,4ptp4l0-21swapper/220:55:122
134491400,3ptp4l8276-21apt-get19:35:113
134491400,3ptp4l29222-21apt-get21:30:112
134491400,3ptp4l24722-21apt-get22:30:142
134491400,3ptp4l20131-21apt-get22:20:132
134491400,3ptp4l0-21swapper/223:55:432
29083993934,3cyclictest33-21ksoftirqd/219:10:182
29083993917,6cyclictest33-21ksoftirqd/221:40:252
134491390,5ptp4l0-21swapper/222:05:162
134491390,4ptp4l0-21swapper/223:40:232
134491390,4ptp4l0-21swapper/223:23:452
134491390,4ptp4l0-21swapper/220:30:272
134491390,4ptp4l0-21swapper/220:00:162
134491390,4ptp4l0-21swapper/219:40:112
134491380,4ptp4l0-21swapper/221:25:582
134491380,4ptp4l0-21swapper/221:10:152
134491380,4ptp4l0-21swapper/220:25:202
134491380,3ptp4l0-21swapper/221:06:212
46198290,4rtkit-daemon0-21swapper/319:05:453
137891243,13phc2sys26999-21diskstats19:05:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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