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2026-05-13 - 15:26
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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 Wed May 13, 2026 12:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20391997516,15cyclictest29146-21chrt07:27:073
20391997415,15cyclictest17983-21taskset09:22:423
20391997415,15cyclictest17983-21taskset09:22:413
20391997215,16cyclictest13649-21runrttasks08:05:043
20391997215,14cyclictest2087-21taskset09:56:353
20391997115,17cyclictest32394-21chrt09:54:183
20391997017,18cyclictest32077-21sshd08:44:403
20391997016,15cyclictest20121-21chrt08:17:393
20391997015,9cyclictest23436-21taskset09:35:093
20391997015,17cyclictest27566-21taskset09:41:553
20391997015,11cyclictest20577-21taskset08:20:083
20391997015,11cyclictest20577-21taskset08:20:083
20391996916,16cyclictest25810-21chrt10:46:383
20391996915,14cyclictest16777-21taskset11:39:533
2038899671,26cyclictest3566-21latency10:00:200
231102660,4sleep023114-21df_abs08:25:130
20391996510,11cyclictest29527-21timerandwakeup09:45:263
20391996410,13cyclictest2025-21ntp_states11:05:233
2039199639,10cyclictest10440-21df_abs11:25:133
20391996312,15cyclictest26072-21runrttasks11:58:133
2038899639,18cyclictest17555-21irqrtprio10:30:190
2038899630,22cyclictest26604-21sort12:00:120
2038899621,57cyclictest21583-21wc08:20:220
2038899621,57cyclictest21583-21wc08:20:210
2038899620,27cyclictest9728-21seq12:30:570
2038899620,27cyclictest6334-21seq08:56:020
2038899620,18cyclictest134491ptp4l07:49:280
2038899620,18cyclictest134491ptp4l07:49:280
2038899610,27cyclictest1791-21seq08:47:230
2038899610,26cyclictest23395-21seq11:51:010
2038899610,26cyclictest14278-21seq11:32:170
2038899610,25cyclictest25196-21seq09:36:150
2038899610,23cyclictest21948-21missed_timers09:30:210
134491610,27ptp4l41-21ksoftirqd/310:40:273
2038899602,26cyclictest3652-21taskset07:40:400
2038899602,23cyclictest0-21swapper/010:18:100
2038899601,27cyclictest21142-21seq10:38:410
2038899600,34cyclictest9231-21seq10:13:580
2038899600,27cyclictest8608-21seq09:00:310
2038899600,27cyclictest12034-21taskset11:27:530
2038899600,26cyclictest31931-21seq08:42:500
2038899600,26cyclictest26040-21seq10:49:350
2038899600,26cyclictest17825-21seq08:12:420
2038899600,26cyclictest14050-21seq10:23:530
2038899600,25cyclictest29059-21seq07:26:010
2038899600,22cyclictest29256-21proc_pri09:45:240
107842600,6sleep32039199cyclictest09:05:253
20391995917,10cyclictest1301-21snmpd08:57:083
20391995913,15cyclictest4479-21/usr/sbin/munin12:20:213
2038899591,27cyclictest29458-21taskset08:36:310
2038899591,26cyclictest3012-21seq12:18:250
2038899591,25cyclictest18903-21taskset11:42:270
2038899591,25cyclictest13308-21taskset09:11:510
2038899590,26cyclictest20410-21seq09:29:160
2038899590,25cyclictest20189-21seq08:18:320
2038899590,25cyclictest13125-21seq08:01:230
134491590,3ptp4l0-21swapper/110:24:451
20391995815,9cyclictest24657-21taskset07:18:463
20391995815,9cyclictest24657-21taskset07:18:453
2038899582,22cyclictest0-21swapper/012:28:430
2038899580,26cyclictest24532-21seq07:17:100
2038899580,26cyclictest24532-21seq07:17:090
2038899580,26cyclictest15749-21seq09:18:450
2038899580,25cyclictest2119-21taskset09:57:000
134491580,5ptp4l0-21swapper/209:10:192
134491580,5ptp4l0-21swapper/109:40:111
134491580,4ptp4l0-21swapper/210:10:152
20391995715,10cyclictest24854-21chrt08:29:063
20391995714,10cyclictest26836-21taskset07:21:573
20391995711,10cyclictest17870-21runrttasks08:13:163
20391995710,15cyclictest20789-21ls11:45:243
2038899570,26cyclictest7276-21seq11:16:030
2038899570,26cyclictest30614-21seq12:06:340
2038899570,26cyclictest11126-21taskset09:08:210
2038899570,25cyclictest1414-21taskset07:37:310
134491570,4ptp4l0-21swapper/208:16:032
134491570,3ptp4l0-21swapper/112:20:391
134491570,14ptp4l0-21swapper/107:55:131
20391995618,11cyclictest13365-21taskset09:12:383
20391995616,9cyclictest13239-21chrt08:02:463
20391995616,10cyclictest18761-21chrt10:32:413
20391995615,9cyclictest8970-21chrt10:10:353
20391995613,9cyclictest7659-21ntp_states07:50:243
20391995610,13cyclictest27898-21ls10:50:263
2039199560,19cyclictest0-21swapper/311:00:283
2038899563,19cyclictest0-21swapper/010:07:190
2038899562,32cyclictest17907-21seq09:21:420
2038899562,32cyclictest17907-21seq09:21:410
2038899561,25cyclictest30609-21seq10:58:380
2038899561,16cyclictest134691getstats09:50:170
2038899560,26cyclictest22444-21seq07:14:440
2038899560,25cyclictest5077-21seq11:12:180
2038899560,25cyclictest27735-21runrttasks09:44:090
2038899560,25cyclictest26992-21seq08:32:030
134491560,4ptp4l0-21swapper/007:30:310
134491560,3ptp4l0-21swapper/210:07:352
134491560,3ptp4l0-21swapper/109:45:241
2039199559,16cyclictest30100-21ls10:55:253
20391995518,17cyclictest29561-21taskset08:37:523
20391995517,10cyclictest3034-21taskset12:18:433
2038899552,23cyclictest0-21swapper/008:52:280
2038899552,23cyclictest0-21swapper/008:52:280
2038899552,21cyclictest0-21swapper/007:23:030
2038899550,31cyclictest5294-21seq12:22:580
2038899550,26cyclictest26060-21seq11:58:030
134491550,3ptp4l0-21swapper/210:25:262
20391995418,10cyclictest7041-21taskset12:25:243
20391995417,12cyclictest6882-21taskset10:08:173
20391995416,10cyclictest22899-21chrt09:34:003
2038899542,21cyclictest0-21swapper/011:21:190
2038899540,26cyclictest15610-21runrttasks08:08:450
2038899540,25cyclictest21297-21taskset11:48:350
2038899540,25cyclictest12185-21seq12:38:030
134491540,3ptp4l0-21swapper/211:10:212
20391995317,11cyclictest1408-21taskset07:37:253
20391995316,10cyclictest10845-21taskset07:56:513
20391995313,9cyclictest14049-21taskset10:23:513
2038899532,24cyclictest10909-21taskset07:57:420
2038899532,21cyclictest0-21swapper/011:08:200
2038899530,26cyclictest501-21seq11:03:510
20391995217,11cyclictest12034-21taskset12:36:043
20391995214,9cyclictest1827-21taskset08:47:523
2038899522,22cyclictest0-21swapper/010:40:110
2038899520,25cyclictest676-21seq12:14:120
2038899520,25cyclictest676-21seq12:14:120
134491520,3ptp4l0-21swapper/208:33:382
134491520,3ptp4l0-21swapper/110:10:411
20391995118,10cyclictest4567-21taskset10:03:033
20391995117,12cyclictest28314-21taskset12:02:153
20391995114,15cyclictest23604-21taskset11:53:453
20391995111,9cyclictest14158-21apt-get10:25:003
134491510,4ptp4l0-21swapper/208:54:312
134491510,4ptp4l0-21swapper/208:54:312
134491510,11ptp4l0-21swapper/309:25:173
2039199508,15cyclictest6630-21ntpq11:15:223
20391995017,11cyclictest15801-21taskset09:19:263
20391995013,10cyclictest5476-21wc11:15:013
2038899502,19cyclictest0-21swapper/011:37:570
134491500,9ptp4l19168-21ntp_states07:05:233
134491500,4ptp4l0-21swapper/108:00:511
134491500,3ptp4l0-21swapper/207:32:452
134491500,3ptp4l0-21swapper/007:07:290
20391994915,10cyclictest10028-21chrt12:34:493
20391994911,7cyclictest11138-21ls10:15:263
134491490,4ptp4l0-21swapper/209:34:502
134491490,4ptp4l0-21swapper/107:25:471
20391994815,9cyclictest9855-21chrt11:24:243
20391994811,7cyclictest21989-21ls07:10:293
20391994810,7cyclictest29733-21meminfo12:05:203
134491480,5ptp4l0-21swapper/207:05:062
134491480,4ptp4l0-21swapper/209:26:092
134491480,4ptp4l0-21swapper/208:28:522
134491480,3ptp4l0-21swapper/210:55:512
134491480,3ptp4l0-21swapper/110:40:251
134491480,13ptp4l0-21swapper/208:02:352
20391994718,10cyclictest736-21taskset12:14:583
20391994718,10cyclictest736-21taskset12:14:583
20391994717,18cyclictest27015-21taskset08:32:223
20391994713,15cyclictest18834-21taskset11:41:323
134491470,4ptp4l0-21swapper/109:37:271
20391994616,9cyclictest4297-21taskset08:54:253
20391994616,9cyclictest4297-21taskset08:54:253
20389994640,3cyclictest25-21ksoftirqd/107:55:011
134491460,4ptp4l15970-21apt-get08:10:132
20391994516,17cyclictest8730-21taskset09:02:063
20391994515,9cyclictest14199-21taskset11:31:143
134491450,4ptp4l0-21swapper/212:34:042
134491450,4ptp4l0-21swapper/211:03:182
134491450,4ptp4l0-21swapper/109:27:371
134491450,10ptp4l0-21swapper/212:18:432
20389994438,4cyclictest25-21ksoftirqd/109:20:001
134491440,4ptp4l4604-21apt-get08:55:112
134491440,4ptp4l0-21swapper/207:14:222
134491440,3ptp4l0-21swapper/208:46:212
134491440,3ptp4l0-21swapper/108:29:501
20389994339,2cyclictest25-21ksoftirqd/109:59:591
20389994337,3cyclictest25-21ksoftirqd/108:20:001
134491430,9ptp4l0-21swapper/208:09:442
134491430,8ptp4l0-21swapper/209:43:192
134491430,7ptp4l0-21swapper/211:36:442
134491430,5ptp4l10580-21hddtemp_smartct11:25:151
134491430,4ptp4l17083-21ntp_states08:10:241
134491430,3ptp4l0-21swapper/210:30:242
134491430,11ptp4l0-21swapper/007:51:120
2038999426,4cyclictest25-21ksoftirqd/108:35:011
20389994237,2cyclictest25-21ksoftirqd/110:05:001
20389994236,3cyclictest25-21ksoftirqd/111:50:001
134491420,9ptp4l0-21swapper/212:00:532
134491420,9ptp4l0-21swapper/210:38:062
134491420,8ptp4l0-21swapper/212:23:232
134491420,6ptp4l4557-21diskstats07:45:132
134491420,6ptp4l4557-21diskstats07:45:132
134491420,6ptp4l0-21swapper/211:25:112
134491420,5ptp4l22786-21ntp_states11:50:212
134491420,5ptp4l0-21swapper/010:50:230
134491420,4ptp4l23668-21memory07:15:211
134491420,4ptp4l23668-21memory07:15:211
134491420,4ptp4l22476-21meminfo10:40:202
134491420,4ptp4l16127-21apt-get09:20:122
134491420,4ptp4l16127-21apt-get09:20:112
134491420,4ptp4l1056-21ntp_states08:45:241
134491420,3ptp4l19354-21apt-get11:45:112
134491410,9ptp4l0-21swapper/212:27:252
134491410,5ptp4l0-21swapper/212:35:122
134491410,5ptp4l0-21swapper/211:55:022
134491410,5ptp4l0-21swapper/109:30:051
134491410,4ptp4l4556-21diskstats07:45:121
134491410,4ptp4l4556-21diskstats07:45:121
134491410,4ptp4l32081-21users09:50:261
134491410,4ptp4l14929-21ntp_states09:15:242
134491410,4ptp4l10167-21meminfo09:05:172
134491410,4ptp4l0-21swapper/211:05:132
134491410,4ptp4l0-21swapper/207:55:152
20391994016,10cyclictest31566-21taskset07:32:593
20390994034,4cyclictest33-21ksoftirqd/212:14:182
20390994034,4cyclictest33-21ksoftirqd/212:14:182
20389994036,3cyclictest25-21ksoftirqd/109:15:001
134491400,8ptp4l0-21swapper/207:17:142
134491400,8ptp4l0-21swapper/207:17:142
134491400,5ptp4l0-21swapper/211:30:232
134491400,5ptp4l0-21swapper/111:20:141
134491400,5ptp4l0-21swapper/110:25:211
134491400,5ptp4l0-21swapper/108:40:191
134491400,5ptp4l0-21swapper/108:05:211
134491400,4ptp4l6888-21python11:15:251
134491400,4ptp4l32712-21apt-get09:55:132
134491400,4ptp4l31306-21diskstats11:00:151
134491400,4ptp4l2318-21gnome-shell10:23:592
134491400,4ptp4l1463-21iostat_ios11:05:181
134491400,4ptp4l0-21swapper/310:35:243
134491400,4ptp4l0-21swapper/307:45:203
134491400,4ptp4l0-21swapper/307:45:203
134491400,4ptp4l0-21swapper/307:40:203
134491400,4ptp4l0-21swapper/211:40:172
134491400,4ptp4l0-21swapper/208:20:252
134491400,4ptp4l0-21swapper/208:20:242
134491400,4ptp4l0-21swapper/207:54:592
134491400,4ptp4l0-21swapper/112:35:111
134491400,4ptp4l0-21swapper/112:01:451
134491400,4ptp4l0-21swapper/108:20:571
134491400,4ptp4l0-21swapper/108:20:571
134491400,3ptp4l26318-21/usr/sbin/munin10:50:202
134491400,3ptp4l1599-21iostat_ios12:15:181
46198390,3rtkit-daemon29801-21ls12:05:211
20390993934,3cyclictest33-21ksoftirqd/209:01:542
20389993934,3cyclictest25-21ksoftirqd/107:39:591
134491390,6ptp4l0-21swapper/112:14:341
134491390,6ptp4l0-21swapper/112:14:341
134491390,5ptp4l5693-21ntpq08:55:221
134491390,5ptp4l25339-21df_inode07:20:141
134491390,5ptp4l0-21swapper/210:45:212
134491390,5ptp4l0-21swapper/209:35:222
134491390,5ptp4l0-21swapper/107:08:331
134491390,4ptp4l0-21swapper/210:17:262
134491390,4ptp4l0-21swapper/210:00:232
134491390,4ptp4l0-21swapper/209:54:342
134491390,4ptp4l0-21swapper/209:45:392
134491390,4ptp4l0-21swapper/207:38:382
134491390,4ptp4l0-21swapper/207:26:372
134491390,4ptp4l0-21swapper/207:20:232
134491390,4ptp4l0-21swapper/111:56:491
134491390,4ptp4l0-21swapper/111:43:181
134491390,4ptp4l0-21swapper/111:33:421
134491390,4ptp4l0-21swapper/111:14:221
134491390,4ptp4l0-21swapper/110:30:261
134491390,4ptp4l0-21swapper/110:15:161
134491390,4ptp4l0-21swapper/109:21:321
134491390,4ptp4l0-21swapper/109:21:311
134491390,4ptp4l0-21swapper/109:05:161
134491390,4ptp4l0-21swapper/108:50:201
134491390,4ptp4l0-21swapper/108:50:201
134491390,4ptp4l0-21swapper/107:40:281
134491390,4ptp4l0-21swapper/107:31:271
134491390,4ptp4l0-21swapper/107:13:171
134491390,4ptp4l0-21swapper/010:25:170
134491390,3ptp4l6656-21memory12:25:201
134491390,3ptp4l33-21ksoftirqd/208:35:022
134491390,3ptp4l31566-21ls08:40:272
134491390,3ptp4l1904-21apt-get07:40:122
134491390,3ptp4l0-21swapper/111:38:021
134491390,3ptp4l0-21swapper/110:53:591
20389993833,3cyclictest25-21ksoftirqd/110:45:141
20389993832,4cyclictest25-21ksoftirqd/109:05:011
134491380,4ptp4l0-21swapper/212:05:482
134491380,4ptp4l0-21swapper/211:20:062
134491380,4ptp4l0-21swapper/211:15:192
134491380,4ptp4l0-21swapper/112:30:171
134491380,4ptp4l0-21swapper/111:50:171
134491380,4ptp4l0-21swapper/110:35:131
134491380,4ptp4l0-21swapper/108:35:011
134491380,3ptp4l0-21swapper/110:05:231
134491370,3ptp4l0-21swapper/110:56:311
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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