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2026-07-17 - 16:37
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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 Fri Jul 17, 2026 12:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3150621440,6sleep03211799cyclictest10:35:240
2225721360,4sleep03211799cyclictest10:15:260
3211799737,13cyclictest18779-21awk11:20:010
32120997231,9cyclictest41-21ksoftirqd/307:20:213
32120997129,4cyclictest41-21ksoftirqd/311:10:013
32117997110,11cyclictest10597-21ntpq11:00:230
32117997110,11cyclictest10597-21ntpq11:00:230
32120996833,4cyclictest41-21ksoftirqd/311:40:003
3211999682,36cyclictest0-21swapper/211:35:162
84442670,3sleep10-21swapper/109:45:261
32120996734,9cyclictest41-21ksoftirqd/307:40:283
32120996730,10cyclictest41-21ksoftirqd/312:20:183
32119996733,4cyclictest33-21ksoftirqd/209:00:182
3211799678,12cyclictest6963-21cat09:45:010
32119996632,3cyclictest33-21ksoftirqd/210:20:002
3211799666,19cyclictest9726-21sed12:10:000
32120996537,3cyclictest41-21ksoftirqd/308:50:003
32120996533,4cyclictest41-21ksoftirqd/312:00:143
32120996526,4cyclictest41-21ksoftirqd/307:45:153
3211799659,17cyclictest25857-21df_abs08:05:170
3211799658,18cyclictest13452-21unixbench_singl11:05:280
264132650,6sleep10-21swapper/109:15:211
32120996432,8cyclictest41-21ksoftirqd/312:25:213
32119996431,9cyclictest33-21ksoftirqd/208:05:222
32119996426,6cyclictest33-21ksoftirqd/210:35:192
3211999642,33cyclictest0-21swapper/207:30:272
3211799647,16cyclictest0-21swapper/008:40:150
32120996331,8cyclictest41-21ksoftirqd/309:40:183
32120996331,5cyclictest41-21ksoftirqd/310:00:003
32120996328,3cyclictest41-21ksoftirqd/309:25:253
32119996327,8cyclictest33-21ksoftirqd/208:55:152
32117996311,11cyclictest1317-21runrttasks09:35:420
32120996231,4cyclictest41-21ksoftirqd/312:40:013
32120996230,5cyclictest41-21ksoftirqd/308:55:303
32120996229,4cyclictest41-21ksoftirqd/308:35:143
32119996228,4cyclictest33-21ksoftirqd/207:55:222
32119996227,4cyclictest33-21ksoftirqd/209:35:272
3211799629,12cyclictest3736-21sed11:55:200
32117996211,10cyclictest1317-21runrttasks10:47:350
32120996130,4cyclictest41-21ksoftirqd/311:55:173
32120996127,4cyclictest41-21ksoftirqd/307:50:263
32120996122,7cyclictest41-21ksoftirqd/312:15:183
32120996118,3cyclictest41-21ksoftirqd/310:45:003
32119996131,3cyclictest33-21ksoftirqd/210:40:232
32119996126,4cyclictest33-21ksoftirqd/210:00:002
32119996125,9cyclictest33-21ksoftirqd/208:50:162
32119996120,16cyclictest33-21ksoftirqd/211:25:002
3211899610,14cyclictest27439-21chrt10:25:541
3211799619,11cyclictest1317-21runrttasks11:26:110
3211799617,14cyclictest24211-21sed11:30:190
3211799617,10cyclictest0-21swapper/012:20:210
3211799616,20cyclictest0-21swapper/008:22:370
32117996111,11cyclictest1317-21runrttasks11:40:270
32117996111,11cyclictest1317-21runrttasks11:22:540
32120996028,3cyclictest41-21ksoftirqd/311:10:273
32120996024,9cyclictest41-21ksoftirqd/309:30:283
32120996022,16cyclictest41-21ksoftirqd/310:55:153
32119996028,4cyclictest33-21ksoftirqd/207:25:282
32119996016,4cyclictest33-21ksoftirqd/207:10:522
3211899600,18cyclictest30479-21df_abs08:15:151
3211899600,12cyclictest31885-21chrt09:25:561
3211799608,12cyclictest1301-21snmpd11:40:000
3211799608,11cyclictest10386-21chrt09:50:180
3211799607,14cyclictest8538-21run-parts09:45:270
32117996011,10cyclictest1317-21runrttasks11:46:330
32117996010,12cyclictest1317-21runrttasks08:34:570
32117996010,10cyclictest28376-21if_enp4s009:20:170
32117996010,10cyclictest1317-21runrttasks08:28:430
134491600,10ptp4l0-21swapper/208:10:132
32120995929,4cyclictest41-21ksoftirqd/309:50:273
32120995927,4cyclictest41-21ksoftirqd/307:30:273
32120995925,4cyclictest41-21ksoftirqd/309:05:163
32120995925,4cyclictest41-21ksoftirqd/309:05:163
32120995923,4cyclictest41-21ksoftirqd/309:35:233
32119995929,4cyclictest33-21ksoftirqd/209:34:152
32119995927,4cyclictest33-21ksoftirqd/212:05:002
3211899590,12cyclictest17969-21chrt07:49:161
3211799599,18cyclictest10595-21sed12:10:190
3211799598,10cyclictest1-21systemd09:04:250
32117995911,11cyclictest1317-21runrttasks07:53:520
32117995911,10cyclictest1317-21runrttasks12:17:170
134491590,4ptp4l24364-21ntp_states09:10:243
134491590,4ptp4l0-21swapper/111:46:301
32120995828,3cyclictest41-21ksoftirqd/310:30:133
32120995827,3cyclictest41-21ksoftirqd/312:10:143
32120995827,3cyclictest41-21ksoftirqd/309:45:283
32120995826,3cyclictest41-21ksoftirqd/310:45:273
32120995824,7cyclictest41-21ksoftirqd/307:25:223
32120995823,9cyclictest41-21ksoftirqd/308:15:153
32119995827,9cyclictest33-21ksoftirqd/211:45:262
32119995818,8cyclictest33-21ksoftirqd/209:40:572
3211899580,12cyclictest2403-21taskset09:35:101
32117995814,10cyclictest23247-21taskset12:37:100
134491580,4ptp4l0-21swapper/111:31:121
134491580,3ptp4l0-21swapper/311:00:203
134491580,3ptp4l0-21swapper/311:00:203
32120995726,4cyclictest41-21ksoftirqd/307:55:223
32120995726,3cyclictest41-21ksoftirqd/307:15:273
32120995725,8cyclictest41-21ksoftirqd/308:50:153
32120995725,4cyclictest41-21ksoftirqd/308:30:143
32120995724,8cyclictest41-21ksoftirqd/311:25:263
32120995723,3cyclictest41-21ksoftirqd/310:35:253
3211899575,10cyclictest0-21swapper/109:56:161
3211899571,12cyclictest2484-21chrt11:52:181
3211899571,12cyclictest11602-21idleruntime-cro09:55:001
3211899570,13cyclictest1964-21chrt09:33:061
3211899570,12cyclictest7247-21taskset12:04:101
3211899570,11cyclictest32327-21chrt10:39:381
3211799577,11cyclictest14680-21sed08:50:210
3211799577,11cyclictest10331-21mailstats07:30:260
32117995715,9cyclictest27443-21seq09:18:130
32117995714,16cyclictest7188-21seq12:03:260
32117995711,11cyclictest1317-21runrttasks11:11:420
32117995711,10cyclictest1317-21runrttasks09:08:460
32117995711,10cyclictest1317-21runrttasks09:08:460
32117995710,10cyclictest1317-21runrttasks07:13:160
134491570,3ptp4l0-21swapper/010:55:290
32120995635,4cyclictest41-21ksoftirqd/310:25:273
32120995625,4cyclictest41-21ksoftirqd/312:05:133
32120995624,9cyclictest41-21ksoftirqd/309:00:183
32120995623,9cyclictest41-21ksoftirqd/310:15:143
32119995616,7cyclictest33-21ksoftirqd/211:43:332
3211899560,12cyclictest8692-21ntp_states12:05:231
3211899560,12cyclictest18596-21chrt12:26:251
3211899560,11cyclictest21035-21chrt12:33:151
3211799569,9cyclictest0-21swapper/009:56:030
3211799567,10cyclictest1288-21sed11:50:180
32117995614,10cyclictest24091-21/usr/sbin/munin09:10:190
32117995611,11cyclictest1317-21runrttasks07:29:490
32117995610,10cyclictest1317-21runrttasks10:24:240
32120995527,4cyclictest41-21ksoftirqd/311:45:003
32120995526,10cyclictest41-21ksoftirqd/308:20:213
32120995525,3cyclictest41-21ksoftirqd/310:05:253
32120995525,3cyclictest41-21ksoftirqd/310:05:253
32120995523,4cyclictest41-21ksoftirqd/311:30:143
32120995521,4cyclictest41-21ksoftirqd/307:35:263
32120995520,8cyclictest41-21ksoftirqd/308:05:173
32119995520,4cyclictest33-21ksoftirqd/208:30:242
32119995519,9cyclictest33-21ksoftirqd/208:00:472
32119995519,8cyclictest33-21ksoftirqd/211:56:322
3211899550,12cyclictest20345-21chrt07:52:371
3211799558,11cyclictest30864-21irqrtprio08:15:210
3211799558,11cyclictest14592-21missed_timers07:40:210
3211799556,9cyclictest0-21swapper/007:20:250
32117995514,11cyclictest15936-21taskset10:00:580
32117995511,10cyclictest1317-21runrttasks10:52:170
32117995510,11cyclictest1317-21runrttasks10:11:090
134491550,4ptp4l0-21swapper/210:21:592
134491550,3ptp4l0-21swapper/211:19:012
32120995435,10cyclictest41-21ksoftirqd/308:05:003
32120995421,4cyclictest41-21ksoftirqd/307:10:273
32120995418,6cyclictest41-21ksoftirqd/308:25:213
32119995425,5cyclictest33-21ksoftirqd/210:25:232
3211899543,9cyclictest0-21swapper/107:29:141
3211899541,12cyclictest14085-21sed11:10:011
3211899540,12cyclictest8788-21taskset08:35:451
3211899540,11cyclictest23191-21chrt11:28:241
3211899540,11cyclictest13649-21chrt08:48:571
3211799547,9cyclictest0-21swapper/008:37:030
3211799546,22cyclictest17930-21ntpq12:25:220
3211799546,15cyclictest16569-21ps07:45:180
3211799546,11cyclictest0-21swapper/009:33:180
134491540,3ptp4l0-21swapper/212:19:562
3212099535,6cyclictest41-21ksoftirqd/309:19:333
32120995323,7cyclictest41-21ksoftirqd/311:20:293
32120995320,4cyclictest41-21ksoftirqd/308:14:523
32119995334,3cyclictest33-21ksoftirqd/212:20:122
3211899533,10cyclictest0-21swapper/108:03:071
3211899530,12cyclictest2235-21chrt10:44:231
3211799536,10cyclictest0-21swapper/008:47:570
3212099522,8cyclictest41-21ksoftirqd/310:13:533
32120995223,8cyclictest41-21ksoftirqd/310:00:173
32120995222,3cyclictest41-21ksoftirqd/310:23:503
32119995225,6cyclictest33-21ksoftirqd/208:29:172
3211999522,31cyclictest0-21swapper/211:54:312
32119995214,7cyclictest33-21ksoftirqd/207:18:072
3211999521,2cyclictest121rcu_preempt07:45:142
3211899520,16cyclictest6713-21chrt08:33:371
3211899520,10cyclictest115612chrt12:10:331
3211799528,10cyclictest0-21swapper/007:15:290
3211799527,10cyclictest0-21swapper/010:25:140
3211799526,11cyclictest0-21swapper/008:14:550
3211799523,19cyclictest0-21swapper/007:39:120
32117995210,11cyclictest1317-21runrttasks07:56:490
134491520,4ptp4l0-21swapper/212:12:522
134491520,3ptp4l0-21swapper/209:23:072
32120995134,4cyclictest41-21ksoftirqd/308:45:003
32120995133,7cyclictest41-21ksoftirqd/311:50:013
32120995133,7cyclictest41-21ksoftirqd/309:25:003
3212099512,6cyclictest41-21ksoftirqd/310:55:003
32120995117,3cyclictest41-21ksoftirqd/311:15:163
3211999517,6cyclictest33-21ksoftirqd/209:05:202
3211999517,6cyclictest33-21ksoftirqd/209:05:202
3211999515,7cyclictest33-21ksoftirqd/210:34:532
32119995122,6cyclictest33-21ksoftirqd/212:26:522
32119995122,2cyclictest33-21ksoftirqd/209:49:472
32119995116,3cyclictest33-21ksoftirqd/208:47:452
32119995113,7cyclictest33-21ksoftirqd/210:59:482
3211899511,12cyclictest28143-21date11:40:001
3211899510,12cyclictest22821-21seq10:15:541
3211799517,10cyclictest19755-21cut12:30:170
3211799516,11cyclictest0-21swapper/008:00:280
134491510,5ptp4l0-21swapper/007:06:270
3211999507,7cyclictest33-21ksoftirqd/210:07:272
3211999507,7cyclictest33-21ksoftirqd/210:07:272
3211999505,7cyclictest33-21ksoftirqd/209:55:002
32119995041,2cyclictest33-21ksoftirqd/207:20:202
32119995026,4cyclictest33-21ksoftirqd/212:05:182
32119995025,4cyclictest33-21ksoftirqd/208:40:232
32119995024,5cyclictest33-21ksoftirqd/212:30:262
3211999501,6cyclictest33-21ksoftirqd/209:25:242
3211899503,13cyclictest0-21swapper/107:12:421
3211899501,8cyclictest15633-21ls10:00:261
3211899500,11cyclictest18297-21chrt08:59:001
32117995014,8cyclictest29793-21taskset10:31:390
134491500,4ptp4l0-21swapper/210:14:432
32120994932,8cyclictest41-21ksoftirqd/311:45:213
3211999495,8cyclictest33-21ksoftirqd/212:39:442
32119994930,5cyclictest33-21ksoftirqd/211:05:002
32119994930,5cyclictest33-21ksoftirqd/211:05:002
3211999492,7cyclictest33-21ksoftirqd/211:05:142
3211999491,7cyclictest121rcu_preempt08:20:152
3211899491,10cyclictest1317-21runrttasks11:01:271
3211899491,10cyclictest1317-21runrttasks11:01:271
3211799499,11cyclictest1317-21runrttasks09:28:320
3211799498,10cyclictest0-21swapper/010:43:550
134491490,4ptp4l0-21swapper/207:37:072
3211999483,8cyclictest33-21ksoftirqd/210:54:372
3211999481,6cyclictest33-21ksoftirqd/211:30:192
3211899483,11cyclictest0-21swapper/107:38:401
3211899480,11cyclictest15352-21chrt07:40:531
3212099473,8cyclictest41-21ksoftirqd/312:30:123
32119994739,3cyclictest33-21ksoftirqd/210:00:172
3211999473,3cyclictest121rcu_preempt07:50:302
32119994733,4cyclictest33-21ksoftirqd/208:15:302
32119994728,5cyclictest33-21ksoftirqd/207:40:152
32119994724,4cyclictest33-21ksoftirqd/209:15:172
32119994722,4cyclictest33-21ksoftirqd/210:45:402
32119994719,4cyclictest33-21ksoftirqd/211:10:192
3211999470,1cyclictest121rcu_preempt09:15:002
3211899473,10cyclictest0-21swapper/108:50:161
3211799478,10cyclictest0-21swapper/008:56:260
3211999462,5cyclictest0-21swapper/208:35:242
3211899460,12cyclictest3814-21seq07:15:501
3211899460,12cyclictest29417-21cat11:40:231
3211799468,9cyclictest0-21swapper/010:07:450
3211799468,9cyclictest0-21swapper/010:07:450
134491460,3ptp4l0-21swapper/109:42:331
134491460,10ptp4l30675-21awk07:05:251
32119994532,3cyclictest33-21ksoftirqd/211:25:272
3211899451,11cyclictest8930-21chrt10:56:151
3211899450,9cyclictest29142-21ntpq10:30:241
3211899450,14cyclictest20231-21ls10:10:281
3211899450,12cyclictest18622-21chrt11:18:571
3211899450,11cyclictest4422-21chrt10:47:201
3211899450,11cyclictest29621-21seq08:10:491
3211899450,11cyclictest25232-21chrt10:22:051
134491450,10ptp4l0-21swapper/108:20:171
3211899440,16cyclictest22846-21chrt09:08:111
3211899440,16cyclictest22846-21chrt09:08:111
3211899431,16cyclictest6323-21taskset07:23:171
3211899430,11cyclictest6598-21chrt10:50:451
3211899430,11cyclictest20586-21chrt09:03:381
3211899422,19cyclictest0-21swapper/107:32:271
3211899420,7cyclictest21308-21df_inode07:55:151
3211899420,12cyclictest16310-21chrt11:13:481
3211899420,11cyclictest25594-21taskset08:05:051
134491420,5ptp4l10350-21memory08:40:211
3211899413,10cyclictest0-21swapper/109:11:591
3211899412,10cyclictest0-21swapper/111:59:201
3211899411,9cyclictest4252-21runrttasks08:26:301
3211899410,11cyclictest20926-21chrt11:23:471
3211899410,11cyclictest18424-21chrt10:08:261
3211899410,11cyclictest18424-21chrt10:08:251
134491400,4ptp4l21739-21diskstats12:35:151
134491400,4ptp4l12731-21iostat12:15:171
134491390,4ptp4l0-21swapper/112:24:411
134491390,4ptp4l0-21swapper/109:23:161
137891234,11phc2sys0-21swapper/307:06:063
317352124,4sleep20-21swapper/207:08:582
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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