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2026-03-31 - 23:25
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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
Compare latency of primary with shadow system
Characteristics of the 376 highest latencies:
System rackeslot6.osadl.org (updated Tue Mar 31, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31144499910293,6cyclictest3150381-21latency_hist09:00:021
3114445999890,5cyclictest3179320-21kworker/u8:3+events_unbound10:45:240
3114445999689,5cyclictest3189143-21kworker/u8:0+flush-179:011:20:000
3114445999688,6cyclictest3208263-21kworker/u8:0+events_unbound12:10:010
3114445999284,6cyclictest3129200-21kworker/u8:1+flush-179:008:05:010
3114449998777,7cyclictest3133945-21latency_hist08:10:011
3114449998777,6cyclictest3182555-21kworker/u8:1+flush-179:011:20:141
3114445998375,5cyclictest3198412-21kworker/u8:2+events_unbound11:50:230
3114445998175,5cyclictest3112759-21kworker/u8:3+events_unbound07:10:040
3114445998173,6cyclictest3198412-21kworker/u8:2+events_unbound11:40:250
3114445998171,7cyclictest3127339-21apt-get07:50:020
3114449998068,9cyclictest3153813-21apt-get09:10:101
3114449998066,10cyclictest266-21systemd-journal12:30:171
3114445997974,3cyclictest3148827-21kworker/u8:2+flush-179:009:05:210
3114445997972,5cyclictest3148827-21kworker/u8:2+events_unbound09:40:010
3114445997972,5cyclictest3148827-21kworker/u8:2+events_unbound09:40:010
3114445997858,10cyclictest3156787-21kworker/u8:3+flush-179:009:30:200
3114445997771,4cyclictest3182555-21kworker/u8:1+flush-179:011:05:210
3114449997670,4cyclictest3148827-21kworker/u8:2+flush-179:010:10:211
3114445997671,4cyclictest3192074-21kworker/u8:3+events_unbound11:30:230
3114445997571,3cyclictest3132404-21kworker/u8:2+events_unbound08:20:010
3114445997565,8cyclictest3182529-21latency_hist10:40:010
3114449997363,8cyclictest3150641-21apt-get09:00:091
3114445997367,5cyclictest3208263-21kworker/u8:0+events_unbound12:05:000
3114445997367,5cyclictest3116069-21kworker/u8:2+flush-179:007:20:000
3114445997362,7cyclictest3117702-21kworker/u8:3+events_unbound07:20:180
3114445997360,5cyclictest3117702-21kworker/u8:3+flush-179:007:40:000
3114449997163,5cyclictest3213539-21kworker/u8:2+flush-179:012:25:011
3114445997163,6cyclictest3214653-21kworker/u8:3+flush-179:012:30:210
3114449997060,7cyclictest510-21rs:main1
3114445997063,4cyclictest3148755-21kworker/u8:0+flush-179:008:55:210
3114449996958,9cyclictest3121127-21apt-get07:30:121
3114445996958,9cyclictest3185948-21apt-get10:50:110
3114445996957,9cyclictest3172650-21latency_hist10:10:000
3114449996859,7cyclictest3214653-21kworker/u8:3+events_unbound12:30:001
3114449996848,18cyclictest3177945-21apt-get10:25:111
3114445996863,3cyclictest3192074-21kworker/u8:3+flush-179:011:20:210
3114445996862,4cyclictest3148827-21kworker/u8:2+flush-179:009:40:220
3114445996851,6cyclictest3182555-21kworker/u8:1+events_unbound11:55:200
3114445996851,6cyclictest3182555-21kworker/u8:1+events_unbound11:55:190
3114445996762,3cyclictest3117702-21kworker/u8:3+flush-179:007:50:220
3114445996760,4cyclictest3189143-21kworker/u8:0+events_unbound11:10:190
3114445996757,7cyclictest3125739-21latency_hist07:45:010
3114449996660,4cyclictest3182555-21kworker/u8:1+flush-179:012:00:221
3114445996661,3cyclictest3120904-21kworker/u8:0+events_unbound08:10:140
3114445996658,6cyclictest3214653-21kworker/u8:3+flush-179:012:25:260
3114449996556,6cyclictest3169514-21kworker/u8:3+flush-179:010:05:001
3114449996553,9cyclictest3201609-21apt-get11:40:001
3114445996459,4cyclictest3137431-21kworker/u8:1+events_unbound08:50:130
3114445996458,4cyclictest3213539-21kworker/u8:2+flush-179:012:35:190
3114449996354,6cyclictest3188870-21latency_hist11:00:011
3114445996257,4cyclictest3117702-21kworker/u8:3+events_unbound07:30:260
3114445996255,5cyclictest3155399-21apt-get09:15:110
3114445996255,5cyclictest3155399-21apt-get09:15:110
3114445996254,6cyclictest3146150-21diskstats08:45:160
3114445996249,10cyclictest3179819-21diskstats10:30:160
3114451996158,1cyclictest0-21swapper/207:49:592
3114449996155,4cyclictest3135498-21kworker/u8:3+flush-179:008:25:181
3114449996151,8cyclictest3179320-21kworker/u8:3+flush-179:010:40:001
3114449996151,8cyclictest3166543-21apt-get09:50:121
3114445996153,7cyclictest3173463-21kworker/u8:0+events_unbound10:10:200
3114445996053,5cyclictest3182555-21kworker/u8:1+events_unbound11:00:260
3114445996052,6cyclictest3137431-21kworker/u8:1+flush-179:008:40:200
3114445996051,6cyclictest3166287-21latency_hist09:50:010
3114449995945,12cyclictest3148827-21kworker/u8:2+flush-179:009:20:011
3114449995945,12cyclictest3148827-21kworker/u8:2+flush-179:009:20:001
3114445995951,5cyclictest3152006-21kworker/u8:1+events_unbound09:20:190
3114449995849,7cyclictest3120869-21latency_hist07:30:001
3114445995853,4cyclictest3197373-21kworker/u8:0+events_unbound11:25:200
3114445995752,4cyclictest3116069-21kworker/u8:2+events_unbound07:25:190
3114445995751,4cyclictest3148827-21kworker/u8:2+flush-179:010:15:260
3114445995740,6cyclictest3213539-21kworker/u8:2+events_unbound12:20:170
3114449995648,6cyclictest3201647-21http11:40:011
3114445995647,7cyclictest266-21systemd-journal08:32:090
3114449995549,4cyclictest3198412-21kworker/u8:2+flush-179:011:45:211
3114445995551,3cyclictest3148827-21kworker/u8:2+flush-179:009:50:250
3114445995450,3cyclictest3148827-21kworker/u8:2+flush-179:009:55:240
3114449995345,6cyclictest3145346-21latency_hist08:45:011
3114449995341,9cyclictest3152229-21apt-get09:05:121
3114445995349,3cyclictest3175799-21kworker/u8:0+events_unbound10:20:170
3114445995347,4cyclictest3152006-21kworker/u8:1+flush-179:009:10:200
3114445995244,6cyclictest3148827-21kworker/u8:2+events_unbound10:25:110
3114445995242,8cyclictest510-21rs:main0
3114449995144,5cyclictest266-21systemd-journal09:25:001
3114449995143,6cyclictest3132404-21kworker/u8:2+flush-179:008:25:001
3114445995147,3cyclictest3179320-21kworker/u8:3+flush-179:010:40:240
4577091500,13ptp4l441ktimers/307:10:003
3114449995040,8cyclictest3127839-21apt-get07:50:111
3114445995045,4cyclictest3135498-21kworker/u8:3+flush-179:008:25:230
3114449994942,5cyclictest3208263-21kworker/u8:0+events_unbound12:20:011
3114449994940,7cyclictest3168111-21/usr/sbin/munin09:55:241
3114449994940,7cyclictest3129424-21apt-get07:55:111
311444999490,30cyclictest3173016-21sed10:10:011
3114445994944,4cyclictest3129200-21kworker/u8:1+events_unbound08:08:090
3114445994742,4cyclictest3182555-21kworker/u8:1+flush-179:012:10:250
3114445994742,4cyclictest3182555-21kworker/u8:1+flush-179:010:55:210
3114445994742,4cyclictest3148827-21kworker/u8:2+events_unbound09:25:240
3114445994740,5cyclictest3120904-21kworker/u8:0+flush-179:007:55:210
311445599460,45cyclictest3201601-21turbostat11:39:593
3114449994640,5cyclictest3148827-21kworker/u8:2+flush-179:010:15:271
3114449994638,6cyclictest3198421-21latency_hist11:30:011
3114449994637,7cyclictest3193639-21latency_hist11:15:001
3114449994627,16cyclictest3127490-21latency_hist07:50:011
3114445994641,4cyclictest3169514-21kworker/u8:3+flush-179:010:00:150
3114445994637,6cyclictest3203497-21kworker/u8:3+events_unbound11:45:120
3114455994540,4cyclictest3138990-21turbostat08:25:003
3114449994538,5cyclictest3200008-21latency_hist11:35:021
3114449994537,6cyclictest3179320-21kworker/u8:3+flush-179:010:45:141
3114449994537,5cyclictest3145820-21cp08:45:011
3114449994536,7cyclictest266-21systemd-journal08:35:001
3114449994523,18cyclictest0-21swapper/110:23:591
311444999450,2cyclictest0-21swapper/108:19:551
3114455994438,5cyclictest3172670-21turbostat10:09:593
311445599440,43cyclictest3198431-21turbostat11:30:013
3114449994340,2cyclictest0-21swapper/111:59:551
3114449994340,2cyclictest0-21swapper/111:59:551
3114449994337,5cyclictest3218074-21kworker/u8:1+flush-179:012:40:011
3114449994333,6cyclictest0-21swapper/107:24:591
311444999430,1cyclictest0-21swapper/111:02:591
3114455994134,6cyclictest3190478-21turbostat11:05:013
311445599410,39cyclictest3176102-21turbostat10:20:013
311445599410,39cyclictest3164710-21turbostat09:45:003
3114449994126,14cyclictest0-21swapper/107:40:591
311444999410,26cyclictest714-21Xorg09:33:001
3114445994135,5cyclictest3137431-21kworker/u8:1+events_unbound08:35:240
4577091400,6ptp4l431rcuc/308:30:003
3114455994038,1cyclictest0-21swapper/307:29:553
311445599400,38cyclictest3161510-21turbostat09:35:003
3114449994018,20cyclictest266-21systemd-journal10:34:591
3114445994031,7cyclictest3114219-21latency_hist07:10:020
3114455993934,4cyclictest3166295-21turbostat09:50:003
3114455993933,5cyclictest3206641-21turbostat11:55:003
3114455993933,5cyclictest3185703-21turbostat10:50:003
311445599390,38cyclictest3133956-21turbostat08:10:003
3114449993936,2cyclictest0-21swapper/112:09:591
3114449993931,6cyclictest3148827-21kworker/u8:2+flush-179:009:40:231
3114445993934,4cyclictest3182555-21kworker/u8:1+flush-179:012:15:140
3114455993832,4cyclictest3213015-21turbostat12:15:003
3114451993835,2cyclictest0-21swapper/210:43:002
3114451993835,2cyclictest0-21swapper/210:38:592
3114451993834,2cyclictest0-21swapper/207:34:592
3114449993830,6cyclictest3198412-21kworker/u8:2+flush-179:011:50:221
311444999382,7cyclictest0-21swapper/108:10:131
3114449993825,12cyclictest3148827-21kworker/u8:2+flush-179:009:45:241
3114449993821,16cyclictest3187311-21sh10:55:001
3114449993818,16cyclictest0-21swapper/111:05:171
3114445993834,3cyclictest3198412-21kworker/u8:2+flush-179:011:35:240
3114455993732,4cyclictest3156740-21turbostat09:20:013
3114455993732,4cyclictest3156740-21turbostat09:20:013
311445599370,35cyclictest0-21swapper/311:56:003
311445599370,35cyclictest0-21swapper/311:55:593
3114449993719,16cyclictest714-21Xorg08:04:591
311444999371,33cyclictest3184261-21cat10:45:021
3114455993634,1cyclictest0-21swapper/312:15:583
3114455993634,1cyclictest0-21swapper/310:20:583
3114455993631,4cyclictest3216201-21turbostat12:24:593
311445599360,35cyclictest0-21swapper/312:01:583
311445599360,35cyclictest0-21swapper/310:39:593
311445599360,1cyclictest0-21swapper/310:40:583
311445599360,1cyclictest0-21swapper/307:19:593
3114451993633,2cyclictest0-21swapper/212:03:582
3114451993633,2cyclictest0-21swapper/210:29:542
3114451993633,2cyclictest0-21swapper/208:03:592
3114449993632,2cyclictest714-21Xorg12:10:591
3114445993632,3cyclictest3137383-21turbostat08:24:550
311445599350,34cyclictest0-21swapper/308:44:553
311445599350,1cyclictest0-21swapper/311:24:563
311445599350,1cyclictest0-21swapper/309:01:593
3114451993532,2cyclictest0-21swapper/211:27:002
311445199350,1cyclictest0-21swapper/210:14:592
3114449993530,3cyclictest266-21systemd-journal09:40:011
3114449993530,3cyclictest266-21systemd-journal09:40:011
3114449993527,6cyclictest3143751-21latency_hist08:40:011
3114449993514,19cyclictest3114645-21apt-key07:10:031
4577091340,5ptp4l441ktimers/307:55:003
3114451993431,2cyclictest0-21swapper/212:23:592
3114451993431,2cyclictest0-21swapper/209:34:552
3114451993431,2cyclictest0-21swapper/209:19:002
3114451993431,2cyclictest0-21swapper/209:19:002
3114449993429,3cyclictest3159932-21ls09:30:001
311444999342,6cyclictest0-21swapper/108:51:591
3114449993410,7cyclictest3116888-21kernelversion07:15:191
3114455993331,1cyclictest0-21swapper/309:11:593
3114455993331,1cyclictest0-21swapper/307:57:593
3114455993326,5cyclictest3221226-21turbostat12:40:003
3114451993330,2cyclictest0-21swapper/210:21:592
3114451993330,2cyclictest0-21swapper/209:57:582
3114455993230,1cyclictest0-21swapper/308:55:593
3114455993229,2cyclictest0-21swapper/310:31:003
3114455993226,5cyclictest3200017-21turbostat11:35:003
3114451993229,2cyclictest0-21swapper/211:19:542
3114451993229,2cyclictest0-21swapper/211:04:582
3114451993229,2cyclictest0-21swapper/208:09:552
311444999321,5cyclictest0-21swapper/111:15:131
3114451993129,1cyclictest0-21swapper/212:39:592
3114451993128,2cyclictest0-21swapper/212:07:592
3114451993128,2cyclictest0-21swapper/209:50:592
3114451993128,2cyclictest0-21swapper/207:23:592
3114449993110,3cyclictest0-21swapper/107:10:111
3114455993028,1cyclictest0-21swapper/309:55:593
3114455993028,1cyclictest0-21swapper/308:54:553
3114455993027,2cyclictest0-21swapper/311:05:143
3114455993025,4cyclictest3195255-21turbostat11:20:003
3114455993024,5cyclictest3218046-21turbostat12:30:013
311445599300,28cyclictest0-21swapper/310:55:133
311445599300,28cyclictest0-21swapper/308:45:013
3114451993027,2cyclictest0-21swapper/210:07:592
3114451993027,2cyclictest0-21swapper/208:25:152
311445199300,2cyclictest0-21swapper/207:17:592
4577091290,4ptp4l441ktimers/308:04:553
3114455992927,1cyclictest0-21swapper/308:15:593
311445599290,28cyclictest0-21swapper/310:00:143
3114451992927,1cyclictest0-21swapper/211:10:002
3114451992926,2cyclictest0-21swapper/212:10:152
3114451992926,2cyclictest0-21swapper/211:10:132
3114451992926,2cyclictest0-21swapper/209:00:112
3114451992926,2cyclictest0-21swapper/207:50:042
311445199290,27cyclictest0-21swapper/210:45:122
311445199290,27cyclictest0-21swapper/210:35:002
311445199290,27cyclictest0-21swapper/208:30:142
311445199290,27cyclictest0-21swapper/208:10:132
311445199290,27cyclictest0-21swapper/207:25:132
311445199290,21cyclictest0-21swapper/209:35:142
311445199290,21cyclictest0-21swapper/209:35:142
3114455992824,2cyclictest4577091ptp4l08:30:173
311445599280,27cyclictest0-21swapper/310:50:133
311445599280,26cyclictest0-21swapper/310:10:023
3114451992825,2cyclictest0-21swapper/211:40:012
3114451992825,2cyclictest0-21swapper/209:22:592
3114451992825,2cyclictest0-21swapper/209:10:112
3114451992825,2cyclictest0-21swapper/208:59:552
3114451992825,2cyclictest0-21swapper/208:45:032
311445199280,2cyclictest0-21swapper/209:27:582
311445199280,27cyclictest0-21swapper/208:15:012
311445199280,26cyclictest0-21swapper/211:50:122
311445199280,26cyclictest0-21swapper/207:56:592
3114455992725,1cyclictest0-21swapper/312:30:113
3114451992725,1cyclictest0-21swapper/211:35:012
3114451992724,2cyclictest0-21swapper/212:26:592
3114451992724,2cyclictest0-21swapper/211:23:592
311445199270,25cyclictest0-21swapper/212:34:002
311445199270,25cyclictest0-21swapper/211:49:562
311445199270,25cyclictest0-21swapper/210:02:002
311445199270,1cyclictest0-21swapper/207:10:122
4577091260,6ptp4l61490irq/134-eno1-TxRx-011:14:593
4577091260,6ptp4l61490irq/134-eno1-TxRx-008:14:563
4577091260,6ptp4l441ktimers/308:40:003
4577091260,4ptp4l61490irq/134-eno1-TxRx-009:40:013
4577091260,4ptp4l61490irq/134-eno1-TxRx-009:40:013
4577091260,4ptp4l441ktimers/312:10:013
4577091260,4ptp4l441ktimers/307:45:013
3114455992624,1cyclictest0-21swapper/311:49:553
3114455992624,1cyclictest0-21swapper/311:40:133
3114455992624,1cyclictest0-21swapper/309:52:583
3114455992621,4cyclictest3127332-21turbostat07:50:013
311445599260,25cyclictest0-21swapper/307:23:593
3114451992623,2cyclictest0-21swapper/211:59:002
3114451992623,2cyclictest0-21swapper/211:58:592
3114451992623,2cyclictest0-21swapper/209:08:592
311445199260,24cyclictest0-21swapper/208:37:592
311445199260,24cyclictest0-21swapper/207:42:592
4577091250,5ptp4l441ktimers/309:24:553
4577091250,5ptp4l441ktimers/307:34:563
4577091250,4ptp4l441ktimers/309:29:553
4577091250,4ptp4l441ktimers/309:10:013
4577091250,4ptp4l441ktimers/307:40:003
3114455992523,1cyclictest0-21swapper/307:11:053
3114451992522,2cyclictest0-21swapper/211:39:552
3114451992522,2cyclictest0-21swapper/209:41:592
3114451992422,1cyclictest0-21swapper/207:40:012
3114451992421,2cyclictest0-21swapper/212:18:592
3114451992421,2cyclictest0-21swapper/209:49:002
3114455992220,1cyclictest0-21swapper/310:27:593
3114451992018,1cyclictest0-21swapper/208:44:592
3114451992017,2cyclictest0-21swapper/210:55:142
3114451991816,1cyclictest0-21swapper/208:55:002
3114451991815,2cyclictest0-21swapper/210:50:592
3114451991714,2cyclictest0-21swapper/208:24:592
3114451991511,2cyclictest351rcuc/210:19:562
31144519930,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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