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2026-03-23 - 00:20
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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 Sun Mar 22, 2026 12:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2469099740,32cyclictest19862-21run-parts09:15:241
2469099730,29cyclictest1301-21snmpd11:00:241
2469099720,32cyclictest2802-21seq09:50:131
2469099720,32cyclictest18044-21taskset09:11:521
2469099710,29cyclictest759-21timerwakeupswit07:25:301
2469099670,30cyclictest11122-21taskset08:59:221
2469099660,38cyclictest7209-21taskset12:19:221
2469099660,31cyclictest8527-21seq08:50:361
2469099660,31cyclictest22974-21seq10:31:141
2469099660,31cyclictest13941-21seq12:32:051
2469099660,30cyclictest16229-21seq12:36:581
2469099660,30cyclictest10737-21seq07:48:591
2469099660,24cyclictest24331-21irqrtprio10:35:191
24689996612,10cyclictest9579-21date10:05:010
2469099650,30cyclictest29392-21taskset08:28:401
2469099650,30cyclictest13843-21seq10:12:121
2469099650,29cyclictest13592-21seq09:03:401
2468999659,17cyclictest13331-21latency_hist07:55:000
24689996511,16cyclictest421-21cut07:25:260
2469099640,31cyclictest17398-21seq08:00:551
2469099640,30cyclictest2659-21taskset12:09:531
2469099640,29cyclictest11529-21taskset11:17:461
2469099640,26cyclictest26897-21ssh09:30:251
2469099630,30cyclictest25057-21seq09:28:031
2468999639,17cyclictest31044-21fschecks_time12:00:150
24689996311,16cyclictest20613-21chrt11:36:080
2469099620,30cyclictest25469-21seq11:46:271
2469099620,30cyclictest13725-21taskset11:21:111
2469099620,25cyclictest10822-21ntpq10:05:211
24692996119,5cyclictest41-21ksoftirqd/307:45:013
24691996127,4cyclictest33-21ksoftirqd/208:30:182
2468999618,17cyclictest28595-21cat07:15:280
2468999617,10cyclictest0-21swapper/010:40:160
24689996111,15cyclictest13390-21switchtime10:10:260
2469099600,29cyclictest32579-21seq12:03:201
2469099600,29cyclictest18545-21seq10:23:191
2469099600,24cyclictest23265-21basename11:45:001
2468999607,16cyclictest0-21swapper/007:20:130
24689996017,9cyclictest26447-21taskset07:11:000
24689996017,11cyclictest24830-21taskset08:19:540
24689996017,11cyclictest24830-21taskset08:19:540
24689996012,11cyclictest13088-21ssh09:00:250
24689996010,15cyclictest5695-21chrt07:36:180
24691995928,7cyclictest33-21ksoftirqd/210:05:132
24691995927,4cyclictest33-21ksoftirqd/210:00:232
2469099590,28cyclictest31704-21ls09:40:261
2469099590,28cyclictest18323-21taskset11:31:141
2468999597,10cyclictest2653-21grep09:50:130
24689995913,16cyclictest22508-21grep10:30:240
2468999587,11cyclictest8445-21awk11:10:220
24689995818,7cyclictest29759-21apt-get08:30:110
24689995817,9cyclictest30291-21taskset11:58:440
24689995815,11cyclictest8482-21taskset07:44:320
24689995812,17cyclictest27841-21/usr/sbin/munin08:25:160
134491580,3ptp4l0-21swapper/110:45:271
24691995714,5cyclictest33-21ksoftirqd/210:50:252
24691995712,6cyclictest33-21ksoftirqd/207:25:212
2468999579,14cyclictest28919-21ntpq09:35:220
24689995718,10cyclictest2551-21taskset12:08:370
24689995717,9cyclictest7016-21seq11:08:520
24689995715,9cyclictest31389-21processes09:40:230
24689995715,11cyclictest32369-21runrttasks10:52:520
24689995714,14cyclictest1317-21runrttasks09:45:440
24689995713,15cyclictest28632-21perl10:45:190
24689995711,16cyclictest18922-21/usr/sbin/munin10:25:240
134491570,3ptp4l0-21swapper/309:35:153
24692995617,6cyclictest41-21ksoftirqd/308:30:203
2469199566,28cyclictest0-21swapper/209:05:202
24691995615,4cyclictest33-21ksoftirqd/207:20:132
2469099562,23cyclictest0-21swapper/107:35:151
2469099561,26cyclictest19498-21sed08:05:271
2469099561,19cyclictest7043-21/usr/sbin/munin07:40:191
2469099560,32cyclictest15193-21seq07:57:221
2468999568,16cyclictest13470-21mailstats12:30:240
2468999568,10cyclictest15013-21awk07:55:280
24689995618,10cyclictest22970-21taskset11:41:410
24689995617,9cyclictest18208-21taskset09:13:580
24689995616,11cyclictest27915-21taskset11:53:240
24689995611,11cyclictest9604-21latency_hist12:24:590
24689995610,8cyclictest16790-21df11:30:130
134491560,8ptp4l23787-21awk07:05:251
24691995528,4cyclictest33-21ksoftirqd/210:20:212
24691995523,3cyclictest33-21ksoftirqd/210:35:222
24691995517,7cyclictest33-21ksoftirqd/211:45:142
24689995516,9cyclictest16134-21taskset12:35:440
24689995516,11cyclictest22781-21runrttasks09:23:260
24689995515,9cyclictest2156-21taskset10:56:180
24689995514,10cyclictest1317-21runrttasks11:22:200
24689995513,11cyclictest1664-21taskset08:36:550
24689995511,7cyclictest2596-21meminfo07:30:190
2469299545,9cyclictest41-21ksoftirqd/308:35:253
2469299545,7cyclictest41-21ksoftirqd/307:55:233
24692995415,5cyclictest41-21ksoftirqd/312:05:263
2469199545,8cyclictest33-21ksoftirqd/208:20:112
24691995412,6cyclictest33-21ksoftirqd/207:35:172
24689995416,10cyclictest6994-21runrttasks09:58:000
24689995413,10cyclictest1317-21runrttasks09:08:360
2468999540,16cyclictest0-21swapper/010:35:170
2469199535,8cyclictest33-21ksoftirqd/211:00:152
2469199534,8cyclictest33-21ksoftirqd/210:10:152
24691995323,7cyclictest33-21ksoftirqd/209:45:182
24691995317,5cyclictest33-21ksoftirqd/207:10:232
24691995314,3cyclictest33-21ksoftirqd/207:45:202
24689995317,10cyclictest25559-21taskset11:47:370
24689995316,11cyclictest4708-21taskset11:03:430
24692995233,10cyclictest41-21ksoftirqd/311:45:003
24692995220,3cyclictest41-21ksoftirqd/310:38:203
24691995214,6cyclictest33-21ksoftirqd/208:00:142
2469099520,23cyclictest8903-21cat10:00:251
2469299517,5cyclictest41-21ksoftirqd/312:15:003
2469199512,7cyclictest8388-21ls11:10:212
2469099512,26cyclictest0-21swapper/110:40:141
2468999518,11cyclictest10467-21mailstats08:55:250
24689995115,9cyclictest7111-21taskset12:18:040
24689995112,9cyclictest1317-21runrttasks08:54:530
24689995111,12cyclictest17593-21meminfo10:20:200
24689995110,7cyclictest19755-21ps09:15:230
24692995019,3cyclictest41-21ksoftirqd/309:25:233
24692995010,3cyclictest41-21ksoftirqd/311:05:223
2469199508,5cyclictest33-21ksoftirqd/211:05:192
2469199503,9cyclictest33-21ksoftirqd/211:30:212
24691995027,3cyclictest33-21ksoftirqd/208:05:282
24690995010,39cyclictest30049-21kworker/1:212:20:491
2469099500,25cyclictest3304-21awk07:30:281
134491500,5ptp4l0-21swapper/007:09:330
24691994917,3cyclictest33-21ksoftirqd/207:55:212
2469099490,37cyclictest29051-21seq07:19:101
2468999490,8cyclictest0-21swapper/010:05:270
2468999490,14cyclictest0-21swapper/010:15:180
2469299488,6cyclictest41-21ksoftirqd/310:50:143
2469299488,5cyclictest41-21ksoftirqd/310:25:243
2469299484,8cyclictest41-21ksoftirqd/310:55:223
24692994827,3cyclictest41-21ksoftirqd/308:55:183
24692994821,5cyclictest41-21ksoftirqd/309:10:003
24692994819,7cyclictest41-21ksoftirqd/309:55:253
24692994819,5cyclictest41-21ksoftirqd/307:10:213
24692994815,6cyclictest41-21ksoftirqd/308:50:243
2469199483,9cyclictest33-21ksoftirqd/207:40:152
24691994812,2cyclictest33-21ksoftirqd/211:35:262
24691994811,5cyclictest33-21ksoftirqd/209:20:142
24689994812,10cyclictest1317-21runrttasks08:01:380
2469299477,6cyclictest0-21swapper/312:17:473
2469299477,6cyclictest0-21swapper/311:30:133
24692994711,7cyclictest41-21ksoftirqd/312:00:243
2469299470,10cyclictest41-21ksoftirqd/309:12:293
24691994728,5cyclictest33-21ksoftirqd/212:30:232
24691994725,4cyclictest33-21ksoftirqd/212:05:252
2469099472,19cyclictest0-21swapper/111:10:271
24689994713,10cyclictest24944-21runrttasks09:26:360
24692994628,9cyclictest41-21ksoftirqd/308:40:253
2469299462,10cyclictest0-21swapper/309:41:583
2469199468,5cyclictest33-21ksoftirqd/209:55:192
2469199465,2cyclictest33-21ksoftirqd/210:15:222
2469199463,5cyclictest321ktimersoftd/210:35:012
24691994632,8cyclictest33-21ksoftirqd/207:30:252
24691994623,4cyclictest33-21ksoftirqd/209:40:162
134491460,12ptp4l0-21swapper/107:20:461
2469299459,5cyclictest41-21ksoftirqd/308:25:163
2469299458,7cyclictest41-21ksoftirqd/307:45:253
24692994529,4cyclictest41-21ksoftirqd/308:05:273
2469299452,7cyclictest41-21ksoftirqd/311:35:243
2469299452,6cyclictest41-21ksoftirqd/312:25:013
2469199459,3cyclictest33-21ksoftirqd/209:34:132
2469199456,6cyclictest33-21ksoftirqd/209:35:242
2469199453,6cyclictest33-21ksoftirqd/211:25:162
2469199452,5cyclictest0-21swapper/208:14:172
24691994514,4cyclictest33-21ksoftirqd/211:50:272
2469099451,27cyclictest30229-21taskset11:57:561
2469099451,14cyclictest0-21swapper/109:25:001
24689994512,9cyclictest1317-21runrttasks08:48:480
2469299444,10cyclictest13405-21ls11:20:253
2469299443,6cyclictest41-21ksoftirqd/310:50:003
24692994431,3cyclictest41-21ksoftirqd/311:18:223
2469299442,7cyclictest0-21swapper/310:10:223
24692994417,6cyclictest41-21ksoftirqd/309:50:143
2469199448,5cyclictest33-21ksoftirqd/209:00:012
2469199446,7cyclictest33-21ksoftirqd/211:20:012
2469199446,6cyclictest33-21ksoftirqd/210:45:192
2469199445,8cyclictest33-21ksoftirqd/209:54:052
2469099440,28cyclictest7050-21chrt09:58:451
2469099440,27cyclictest6287-21chrt08:46:161
2469099440,27cyclictest20732-21taskset11:37:421
2469099440,26cyclictest20829-21chrt10:28:101
2468999449,12cyclictest15262-21sed11:25:220
24689994412,10cyclictest1317-21runrttasks09:30:040
134491440,4ptp4l16251-21apt-get09:10:122
2469299438,3cyclictest41-21ksoftirqd/309:32:043
2469299437,5cyclictest0-21swapper/310:18:003
2469299437,3cyclictest41-21ksoftirqd/308:17:063
2469299437,3cyclictest41-21ksoftirqd/308:17:063
24692994330,3cyclictest41-21ksoftirqd/309:00:213
24692994329,7cyclictest41-21ksoftirqd/312:27:383
24692994322,4cyclictest41-21ksoftirqd/311:15:013
2469199436,5cyclictest33-21ksoftirqd/209:25:162
2469199434,6cyclictest27642-21df_abs08:25:142
2469199433,7cyclictest33-21ksoftirqd/208:15:282
2469199433,7cyclictest33-21ksoftirqd/208:15:282
2469099431,25cyclictest26573-21iostat11:50:171
2469099430,28cyclictest4250-21taskset08:44:311
2469099430,27cyclictest2051-21chrt09:46:541
2469099430,26cyclictest11605-21chrt12:26:321
24689994316,14cyclictest22291-21taskset08:11:590
134491430,4ptp4l2318-21gnome-shell07:48:580
134491430,4ptp4l13962-21apt-get09:05:141
134491430,3ptp4l25113-21apt-get08:20:113
2469299428,3cyclictest41-21ksoftirqd/311:45:143
2469299426,7cyclictest0-21swapper/311:28:563
2469299426,6cyclictest41-21ksoftirqd/307:35:263
2469299422,6cyclictest0-21swapper/307:50:293
24692994225,9cyclictest41-21ksoftirqd/310:00:253
24692994222,9cyclictest41-21ksoftirqd/309:20:133
2469199427,3cyclictest33-21ksoftirqd/207:15:152
2469199422,2cyclictest0-21swapper/212:27:342
24691994214,8cyclictest33-21ksoftirqd/212:00:142
2469199421,40cyclictest0-21swapper/211:40:192
2469099420,29cyclictest2199-21seq10:56:531
2469099420,27cyclictest31532-21seq08:31:391
2469099420,26cyclictest12769-21chrt07:50:411
2468999422,10cyclictest0-21swapper/008:40:250
134491420,5ptp4l0-21swapper/311:50:123
134491420,5ptp4l0-21swapper/311:00:153
134491420,4ptp4l2928-21apt-get12:10:122
134491420,4ptp4l28666-21irqstats09:35:191
134491420,4ptp4l20489-21apt-get08:10:111
134491420,4ptp4l10668-21ls10:05:193
134491420,3ptp4l19481-21ls08:05:270
24692994124,5cyclictest41-21ksoftirqd/308:00:113
2469299410,4cyclictest30741-21swap07:20:253
2469199416,3cyclictest33-21ksoftirqd/208:54:412
2469199414,10cyclictest11073-21apt-get07:50:122
2469199413,6cyclictest0-21swapper/208:40:152
24691994130,3cyclictest33-21ksoftirqd/208:47:212
24691994129,3cyclictest33-21ksoftirqd/209:19:272
2469099410,27cyclictest7067-21seq11:09:251
2469099410,27cyclictest16130-21taskset10:17:001
2469099410,23cyclictest32112-21dpkg08:35:011
24689994116,14cyclictest11537-21taskset12:25:400
134491410,5ptp4l25180-21cat08:20:120
134491410,5ptp4l0-21swapper/107:10:141
134491410,4ptp4l20031-21apt-get08:10:023
134491410,4ptp4l1362-21/usr/sbin/munin08:35:282
134491410,4ptp4l0-21swapper/012:10:150
134491410,3ptp4l24355-21ls08:15:271
134491410,3ptp4l24355-21ls08:15:271
2469299408,3cyclictest41-21ksoftirqd/307:25:243
2469199405,9cyclictest1321-21ls10:55:182
2469099400,28cyclictest16200-21seq11:28:301
2469099400,26cyclictest26125-21cat08:20:201
134491400,5ptp4l0-21swapper/312:30:173
134491400,5ptp4l0-21swapper/311:55:233
134491400,5ptp4l0-21swapper/309:15:183
24692993934,3cyclictest41-21ksoftirqd/309:45:193
24692993923,6cyclictest41-21ksoftirqd/310:20:143
2469299391,6cyclictest0-21swapper/310:30:153
24691993934,3cyclictest33-21ksoftirqd/211:20:192
24691993933,3cyclictest33-21ksoftirqd/212:39:592
134491390,4ptp4l31466-21missed_timers10:50:211
134491390,4ptp4l0-21swapper/312:35:273
134491390,4ptp4l0-21swapper/210:25:142
134491390,4ptp4l0-21swapper/112:10:191
2469299381,4cyclictest401ktimersoftd/307:30:133
2469199386,5cyclictest33-21ksoftirqd/210:42:212
2469199384,9cyclictest33-21ksoftirqd/212:20:252
2469199383,7cyclictest33-21ksoftirqd/211:55:212
2469199383,4cyclictest33-21ksoftirqd/208:55:172
24691993833,3cyclictest33-21ksoftirqd/212:15:252
134491380,4ptp4l0-21swapper/310:41:373
134491380,4ptp4l0-21swapper/307:15:193
134491380,4ptp4l0-21swapper/011:15:190
134491370,4ptp4l0-21swapper/308:48:063
234722235,11sleep30-21swapper/307:05:233
234312233,13sleep223471-21ntp_states07:05:212
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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