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2026-07-11 - 00:22
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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 10, 2026 12:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
308642750,5sleep10-21swapper/107:05:261
31695997411,61cyclictest0-21swapper/211:15:282
31694996912,16cyclictest24566-21chrt10:21:401
3169599680,6cyclictest29528-21turbostat09:25:002
31694996713,16cyclictest22355-21chrt11:25:511
31694996513,10cyclictest29396-21chrt11:42:351
31695996433,4cyclictest33-21ksoftirqd/208:35:242
31695996430,7cyclictest33-21ksoftirqd/209:00:282
31694996413,10cyclictest29117-21chrt10:31:071
31694996412,16cyclictest1491-21chrt09:32:331
31696996328,4cyclictest41-21ksoftirqd/312:30:233
31695996334,10cyclictest33-21ksoftirqd/211:50:152
31695996333,7cyclictest33-21ksoftirqd/210:35:242
31695996333,4cyclictest33-21ksoftirqd/210:05:272
31694996313,16cyclictest31886-21chrt11:49:531
31694996313,10cyclictest13220-21chrt09:59:371
31694996312,10cyclictest22300-21chrt10:17:181
31694996311,14cyclictest22138-21taskset07:59:151
31696996214,7cyclictest41-21ksoftirqd/309:05:233
31695996232,4cyclictest33-21ksoftirqd/210:25:132
31695996232,3cyclictest33-21ksoftirqd/210:10:272
31694996212,16cyclictest4123-21chrt11:59:451
31694996212,11cyclictest24609-21taskset09:11:391
31694996212,11cyclictest20523-21seq12:34:541
31694996211,16cyclictest22510-21taskset09:09:071
31696996119,7cyclictest41-21ksoftirqd/310:35:243
31696996115,6cyclictest41-21ksoftirqd/310:00:233
31695996131,8cyclictest33-21ksoftirqd/207:35:002
31695996131,4cyclictest33-21ksoftirqd/207:20:152
31695996124,4cyclictest33-21ksoftirqd/212:25:252
31695996124,4cyclictest33-21ksoftirqd/208:45:272
31695996122,4cyclictest33-21ksoftirqd/208:25:262
31695996122,4cyclictest33-21ksoftirqd/208:05:252
31694996112,10cyclictest31296-21chrt08:15:591
134491610,25ptp4l9-21ksoftirqd/008:05:140
31695996030,4cyclictest33-21ksoftirqd/210:45:132
31695996029,4cyclictest33-21ksoftirqd/209:50:142
31695996029,4cyclictest33-21ksoftirqd/209:50:142
31695996028,5cyclictest33-21ksoftirqd/211:55:142
31695996028,4cyclictest33-21ksoftirqd/208:00:192
31694996013,10cyclictest10790-21seq08:44:461
31694996012,20cyclictest17819-21chrt11:16:521
31694996012,15cyclictest3423-21chrt07:16:131
31695995932,7cyclictest33-21ksoftirqd/208:15:192
31695995931,10cyclictest33-21ksoftirqd/209:10:312
31695995929,9cyclictest33-21ksoftirqd/211:45:272
31695995928,4cyclictest33-21ksoftirqd/209:15:142
31695995927,9cyclictest33-21ksoftirqd/212:10:182
31694995914,11cyclictest8083-21taskset07:26:461
31694995914,10cyclictest1607-21seq11:52:461
31694995913,12cyclictest20071-21seq10:13:111
31694995913,11cyclictest27140-21seq09:19:371
31694995912,9cyclictest6404-21chrt12:04:141
31694995912,19cyclictest13224-21chrt12:18:251
31694995912,16cyclictest27255-21chrt11:39:471
31694995912,16cyclictest15486-21chrt11:12:071
134491590,4ptp4l0-21swapper/111:06:201
31696995817,5cyclictest41-21ksoftirqd/311:45:193
31696995815,5cyclictest41-21ksoftirqd/308:30:163
31695995829,10cyclictest33-21ksoftirqd/211:20:152
3169599582,5cyclictest33-21ksoftirqd/207:20:012
3169499585,10cyclictest0-21swapper/110:00:201
31694995813,15cyclictest1637-21seq10:44:541
31694995812,16cyclictest5865-21taskset07:22:471
31694995812,11cyclictest10867-21taskset09:53:541
31694995812,11cyclictest10867-21taskset09:53:541
31694995811,11cyclictest10874-21seq11:04:311
3169399587,10cyclictest28071-21sed09:20:190
134491580,4ptp4l0-21swapper/207:07:272
3169699572,21cyclictest0-21swapper/307:25:273
31696995718,6cyclictest41-21ksoftirqd/311:40:203
31695995740,3cyclictest33-21ksoftirqd/211:25:142
31695995729,4cyclictest33-21ksoftirqd/208:40:282
31695995727,8cyclictest33-21ksoftirqd/209:05:282
31695995724,3cyclictest33-21ksoftirqd/211:30:152
3169499575,48cyclictest0-21swapper/108:25:211
31694995713,17cyclictest6212-21seq09:43:121
31694995713,11cyclictest1228-21seq08:21:201
31694995713,10cyclictest8222-21chrt08:36:371
31694995713,10cyclictest13186-21seq07:40:031
31694995712,18cyclictest19720-21seq07:52:471
31694995712,18cyclictest19720-21seq07:52:471
31694995712,16cyclictest17940-21chrt12:26:161
3169399578,7cyclictest0-21swapper/010:00:450
3169399576,18cyclictest6233-21cat07:25:020
3169399576,11cyclictest1317-21runrttasks08:20:510
3169399576,10cyclictest6557-21sed12:05:000
3169399572,11cyclictest18285-21hddtemp_smartct07:50:160
3169399572,11cyclictest18285-21hddtemp_smartct07:50:160
134491570,3ptp4l0-21swapper/212:06:272
3169699562,24cyclictest0-21swapper/308:56:353
3169699562,13cyclictest0-21swapper/310:05:253
31696995617,6cyclictest41-21ksoftirqd/310:15:143
31695995629,3cyclictest33-21ksoftirqd/212:30:122
31695995623,8cyclictest33-21ksoftirqd/211:40:162
31695995623,4cyclictest33-21ksoftirqd/207:28:232
31695995623,3cyclictest33-21ksoftirqd/212:05:002
3169499565,11cyclictest29745-21cat10:35:121
31694995614,10cyclictest17524-21seq08:57:101
31694995613,11cyclictest3953-21seq09:38:501
31694995613,11cyclictest28769-21seq08:10:441
31694995613,10cyclictest22641-21seq12:37:431
31694995613,10cyclictest1035-21taskset07:11:061
31694995612,9cyclictest8475-21chrt10:58:351
134491560,3ptp4l0-21swapper/208:30:172
134491560,3ptp4l0-21swapper/207:52:022
134491560,3ptp4l0-21swapper/207:52:022
31696995517,8cyclictest41-21ksoftirqd/312:14:593
31696995516,6cyclictest41-21ksoftirqd/309:30:273
3169599553,9cyclictest33-21ksoftirqd/209:40:002
31695995522,8cyclictest33-21ksoftirqd/207:35:162
3169599551,6cyclictest33-21ksoftirqd/209:00:002
3169599551,5cyclictest33-21ksoftirqd/208:50:262
31694995513,11cyclictest31782-21seq09:29:521
31694995513,10cyclictest10859-21seq12:12:341
31694995512,11cyclictest24851-21taskset11:33:271
31694995512,11cyclictest15429-21taskset12:22:001
31694995512,10cyclictest8759-21chrt12:10:001
31694995512,10cyclictest26924-21taskset10:27:261
3169399558,15cyclictest1317-21runrttasks11:51:410
31693995510,7cyclictest9717-21ntp_states07:30:260
163522550,3sleep016355-21cpuspeed_turbos12:25:150
3169699542,20cyclictest0-21swapper/309:35:233
31695995426,4cyclictest33-21ksoftirqd/212:15:142
3169599540,6cyclictest33-21ksoftirqd/210:20:012
3169499547,11cyclictest0-21swapper/110:45:191
31694995414,17cyclictest19796-21seq09:01:351
31694995413,16cyclictest24423-21seq08:03:501
31694995412,12cyclictest15186-21seq08:52:211
3169399549,10cyclictest1317-21runrttasks09:42:390
3169399548,11cyclictest212-21systemd-journal10:38:240
3169399546,11cyclictest1317-21runrttasks07:18:460
134491540,3ptp4l0-21swapper/009:05:030
31696995316,6cyclictest41-21ksoftirqd/308:50:013
31696995316,6cyclictest41-21ksoftirqd/308:10:213
31696995312,6cyclictest41-21ksoftirqd/309:20:143
31695995335,10cyclictest33-21ksoftirqd/211:05:002
3169599530,8cyclictest13309-21sendmail-msp10:00:002
3169599530,5cyclictest33-21ksoftirqd/207:45:002
31694995311,10cyclictest17417-21taskset07:47:391
3169399536,11cyclictest19824-21sensors12:30:230
3169699524,5cyclictest19370-21expr07:50:283
3169699524,5cyclictest19370-21expr07:50:273
3169699523,6cyclictest0-21swapper/308:40:213
3169699522,20cyclictest0-21swapper/308:26:033
31696995213,6cyclictest41-21ksoftirqd/312:25:163
3169599529,3cyclictest33-21ksoftirqd/207:10:142
3169599524,4cyclictest33-21ksoftirqd/209:40:162
31695995236,7cyclictest33-21ksoftirqd/210:55:002
31695995229,3cyclictest33-21ksoftirqd/211:05:172
3169699513,12cyclictest0-21swapper/311:35:243
3169699512,6cyclictest401ktimersoftd/307:10:173
3169699511,5cyclictest41-21ksoftirqd/308:35:163
3169599515,3cyclictest33-21ksoftirqd/207:45:172
3169599514,8cyclictest33-21ksoftirqd/207:55:252
3169599512,5cyclictest0-21swapper/209:30:012
3169499514,11cyclictest16997-21ntpq10:05:231
134491510,8ptp4l30011-21cut07:05:180
3169699502,22cyclictest0-21swapper/307:44:463
3169699500,5cyclictest41-21ksoftirqd/312:35:173
3169699500,5cyclictest41-21ksoftirqd/308:20:233
3169699500,5cyclictest22885-21wc10:20:133
3169599504,3cyclictest121rcu_preempt10:20:042
3169599503,9cyclictest33-21ksoftirqd/209:35:002
3169599502,9cyclictest33-21ksoftirqd/210:30:132
31695995025,4cyclictest33-21ksoftirqd/212:25:012
3169599501,5cyclictest33-21ksoftirqd/208:15:012
3169599500,5cyclictest33-21ksoftirqd/211:10:132
3169599500,5cyclictest33-21ksoftirqd/210:05:002
3169499508,39cyclictest20012-21/usr/sbin/munin11:20:281
3169499505,16cyclictest5378-21ntpq10:50:231
31694995011,10cyclictest8384-21taskset09:46:341
3169399507,7cyclictest20943-21df_inode11:25:140
3169399505,11cyclictest1317-21runrttasks11:47:440
134491500,5ptp4l0-21swapper/310:50:243
134491500,3ptp4l121rcu_preempt10:55:250
31696994914,7cyclictest41-21ksoftirqd/311:15:013
31695994939,3cyclictest33-21ksoftirqd/211:00:002
3169599492,4cyclictest33-21ksoftirqd/208:20:202
3169599491,6cyclictest33-21ksoftirqd/211:35:272
3169399494,17cyclictest0-21swapper/012:38:540
3169399494,10cyclictest0-21swapper/009:16:360
3169399492,9cyclictest0-21swapper/008:30:270
3169399491,15cyclictest32742-21ls07:10:220
134491490,4ptp4l0-21swapper/307:21:173
134491490,4ptp4l0-21swapper/209:47:162
3169699487,6cyclictest0-21swapper/309:10:133
3169699483,5cyclictest401ktimersoftd/312:05:203
3169699483,5cyclictest401ktimersoftd/308:05:153
3169699482,6cyclictest401ktimersoftd/310:40:203
3169699482,22cyclictest0-21swapper/312:17:063
3169699480,5cyclictest401ktimersoftd/310:45:163
3169399484,12cyclictest0-21swapper/011:05:400
3169699474,4cyclictest401ktimersoftd/309:15:223
3169699472,7cyclictest20207-21grep07:55:153
31696994720,3cyclictest41-21ksoftirqd/310:35:003
3169599476,6cyclictest33-21ksoftirqd/210:40:132
3169599473,5cyclictest33-21ksoftirqd/212:35:142
3169499476,9cyclictest0-21swapper/108:30:151
3169499476,11cyclictest12016-21missed_timers08:45:221
3169399477,11cyclictest15298-21seq08:53:410
3169399474,9cyclictest0-21swapper/007:40:180
3169399471,10cyclictest17634-21sshd08:58:320
134491470,4ptp4l0-21swapper/309:49:503
31696994631,3cyclictest41-21ksoftirqd/309:25:173
3169699462,5cyclictest0-21swapper/311:00:173
3169699462,4cyclictest0-21swapper/307:15:133
31696994624,4cyclictest41-21ksoftirqd/311:05:233
31696994611,6cyclictest41-21ksoftirqd/309:41:473
3169699460,5cyclictest401ktimersoftd/311:30:133
3169399465,10cyclictest32504-21idleruntime09:30:160
3169399463,11cyclictest0-21swapper/008:38:160
3169399460,11cyclictest0-21swapper/009:25:190
134491460,11ptp4l0-21swapper/008:10:280
3169699450,6cyclictest41-21ksoftirqd/309:00:143
3169699450,6cyclictest401ktimersoftd/309:55:153
3169699450,5cyclictest10148-21sed07:30:303
3169699450,12cyclictest41-21ksoftirqd/311:25:273
3169399457,10cyclictest14636-21wc11:10:200
3169399455,13cyclictest27965-21irqrtprio10:30:180
3169399450,19cyclictest0-21swapper/009:01:350
3169699446,6cyclictest0-21swapper/310:29:273
3169699440,7cyclictest401ktimersoftd/312:00:123
3169699440,5cyclictest41-21ksoftirqd/307:35:193
3169399446,9cyclictest22776-21/usr/sbin/munin10:20:250
134491440,9ptp4l0-21swapper/012:08:430
134491440,5ptp4l0-21swapper/311:55:133
31696994339,2cyclictest401ktimersoftd/311:15:003
3169699432,6cyclictest41-21ksoftirqd/309:54:093
3169699432,6cyclictest41-21ksoftirqd/309:54:093
3169699430,5cyclictest19212-21grep10:10:223
134491430,3ptp4l25085-21apt-get10:25:110
31696994228,4cyclictest41-21ksoftirqd/308:50:353
3169699420,5cyclictest6915-21fschecks_count10:55:173
3169699420,5cyclictest16438-21cut07:45:213
3169499427,9cyclictest12731-21runrttasks07:37:271
31694994212,16cyclictest26748-21chrt08:09:131
3169399425,6cyclictest0-21swapper/012:19:030
134491420,9ptp4l0-21swapper/011:55:110
134491420,4ptp4l22897-21hddtemp_smartct08:00:163
134491420,3ptp4l8910-21apt-get09:50:120
134491420,3ptp4l8910-21apt-get09:50:120
3169399415,10cyclictest0-21swapper/011:21:390
3169399413,10cyclictest2276-21idleruntime08:25:190
134491410,5ptp4l32721-21ps11:50:183
134491410,5ptp4l25802-21iostat_ios11:35:180
134491410,5ptp4l11513-21df_inode09:55:140
134491410,5ptp4l0-21swapper/010:10:150
134491410,4ptp4l6914-21df_inode09:45:140
134491410,4ptp4l0-21swapper/008:45:060
3169699406,3cyclictest41-21ksoftirqd/308:15:423
3169699400,2cyclictest121rcu_preempt11:21:383
3169399403,12cyclictest0-21swapper/008:03:450
3169399403,11cyclictest0-21swapper/009:39:220
134491400,5ptp4l0-21swapper/010:48:350
134491400,4ptp4l0-21swapper/011:30:100
134491400,4ptp4l0-21swapper/011:01:060
134491400,4ptp4l0-21swapper/010:15:570
134491400,4ptp4l0-21swapper/009:10:390
134491400,4ptp4l0-21swapper/008:40:240
134491400,4ptp4l0-21swapper/008:15:060
134491400,4ptp4l0-21swapper/007:45:250
134491390,6ptp4l0-21swapper/307:06:453
134491390,4ptp4l983-21sed10:40:260
134491390,4ptp4l0-21swapper/312:20:273
134491390,4ptp4l0-21swapper/012:21:210
134491390,4ptp4l0-21swapper/012:14:440
134491390,4ptp4l0-21swapper/011:41:010
134491390,4ptp4l0-21swapper/010:50:190
134491390,4ptp4l0-21swapper/007:55:030
134491390,4ptp4l0-21swapper/007:35:290
134491390,4ptp4l0-21swapper/007:25:190
134491390,3ptp4l0-21swapper/010:05:250
134491380,4ptp4l0-21swapper/109:20:201
134491380,4ptp4l0-21swapper/107:34:361
134491370,4ptp4l0-21swapper/011:18:420
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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