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2026-05-14 - 00:32
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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 Wed May 13, 2026 12:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
37263599117107,8cyclictest422681-21latency_hist09:45:010
372635999989,8cyclictest429060-21apt-get10:05:030
372639999381,9cyclictest375972-21/usr/sbin/munin07:20:231
372635999282,7cyclictest439358-21latency_hist10:35:000
372639998680,4cyclictest1213033-21systemd-journal07:50:001
372639998677,6cyclictest460289-21kworker/u8:0+events_unbound11:40:001
372635998475,7cyclictest466685-21latency_hist12:00:020
372635998372,9cyclictest406249-21apt-get08:54:590
372635997969,8cyclictest372777-21/usr/sbin/munin07:10:240
372639997769,5cyclictest451014-21apt-get11:10:131
372635997771,4cyclictest385330-21kworker/u8:2+flush-179:007:50:010
372635997667,7cyclictest1213033-21systemd-journal11:00:000
372639997569,5cyclictest359050-21kworker/u8:2+flush-179:007:30:001
372635997567,6cyclictest382105-21latency_hist07:40:010
372635997362,9cyclictest432732-21apt-get10:15:100
372639997264,5cyclictest444135-21latency_hist10:50:011
372639997060,8cyclictest449429-21apt-get11:05:111
372639996853,14cyclictest448893-21kworker/u8:2+flush-179:011:25:211
372635996859,6cyclictest1213033-21systemd-journal07:24:430
372635996858,8cyclictest436166-21/usr/sbin/munin10:25:230
37264299670,65cyclictest0-21swapper/311:42:003
372639996758,7cyclictest395112-21apt-get08:20:121
372639996758,7cyclictest1213033-21systemd-journal08:15:011
372635996761,4cyclictest409947-21latency_hist09:05:020
372639996558,5cyclictest403065-21latency_hist08:45:011
372635996352,8cyclictest1213033-21systemd-journal08:33:430
372635996152,7cyclictest1213033-21systemd-journal12:20:000
372639996025,26cyclictest0-21swapper/109:00:011
372635996049,9cyclictest447584-21apt-get11:00:130
372639995951,6cyclictest413117-21latency_hist09:15:011
372639995851,5cyclictest453988-21kworker/u8:1+flush-179:011:40:151
372639995847,9cyclictest414981-21apt-get09:20:101
372635995852,5cyclictest439616-21apt-get10:35:100
372639995750,6cyclictest391636-21kworker/u8:0+flush-179:008:20:001
372639995749,6cyclictest374380-21apt-get07:15:111
372635995746,9cyclictest455793-21apt-get11:25:110
372639995645,9cyclictest403321-21apt-get08:45:111
372639995645,9cyclictest403321-21apt-get08:45:101
372635995650,4cyclictest448923-21apt-get11:05:040
372639995547,6cyclictest468319-21kworker/u8:1+events_unbound12:10:001
372639995547,6cyclictest1213033-21systemd-journal10:30:021
372639995535,18cyclictest1213033-21systemd-journal07:54:321
372635995547,7cyclictest375770-21kworker/u8:1+events_unbound08:05:240
372635995547,6cyclictest1213033-21systemd-journal12:40:000
372635995545,8cyclictest1213033-21systemd-journal11:24:560
372639995445,7cyclictest432453-21kworker/u8:1+flush-179:010:35:151
37263999540,51cyclictest714-21Xorg07:40:591
372635995447,5cyclictest432453-21kworker/u8:1+flush-179:010:40:060
372635995446,6cyclictest422664-21kworker/u8:3+flush-179:009:55:140
372635995446,6cyclictest422664-21kworker/u8:3+flush-179:009:55:130
372635995444,7cyclictest398287-21latency_hist08:30:010
372635995432,19cyclictest1-21systemd09:22:440
372635995343,8cyclictest444394-21apt-get10:50:090
37263599530,52cyclictest0-21swapper/007:40:590
37263999521,47cyclictest410203-21apt-get09:05:101
372635995249,2cyclictest399908-21kworker/u8:2+events_unbound09:10:010
372639995136,13cyclictest425896-21kworker/u8:2+flush-179:010:00:141
372635995145,4cyclictest458712-21latency_hist11:35:010
37263599511,43cyclictest462162-21apt-get11:45:120
37263599510,49cyclictest380511-21idleruntime-cro07:35:010
372639995039,9cyclictest418153-21apt-get09:30:121
37263999501,46cyclictest0-21swapper/111:45:121
372635995043,6cyclictest422664-21kworker/u8:3+flush-179:010:15:010
372635995043,5cyclictest461906-21latency_hist11:45:000
372635995043,5cyclictest425851-21latency_hist09:55:020
372639994941,6cyclictest375770-21kworker/u8:1+flush-179:008:05:211
372639994937,10cyclictest475148-21apt-get12:25:101
37263999490,45cyclictest380498-21munin-run07:35:011
372635994941,6cyclictest375770-21kworker/u8:1+flush-179:008:35:240
372639994841,5cyclictest1213033-21systemd-journal12:04:431
372639994840,5cyclictest455537-21latency_hist11:25:011
37263999480,45cyclictest0-21swapper/111:55:121
37263999480,33cyclictest390289-21latency_hist08:05:011
372635994841,5cyclictest1213033-21systemd-journal07:16:430
4577091470,13ptp4l441ktimers/307:09:553
372639994740,6cyclictest474872-21kworker/u8:1+flush-179:012:40:001
372639994736,9cyclictest1213033-21systemd-journal11:05:001
372639994730,15cyclictest435813-21apt-config10:25:021
372635994745,1cyclictest0-21swapper/007:54:590
372635994724,19cyclictest424275-21cut09:50:000
372635994640,5cyclictest714-21Xorg12:31:590
372635994639,5cyclictest434342-21apt-get10:20:100
372635994639,5cyclictest399908-21kworker/u8:2+flush-179:009:15:260
37264299450,4cyclictest460319-21turbostat11:39:593
372639994524,20cyclictest424273-21apt09:50:011
372635994539,4cyclictest372630-21cyclictest08:23:580
372635994534,6cyclictest448968-21kworker/u8:3+flush-179:011:15:140
37263599451,42cyclictest429051-21grep10:04:590
37263599451,40cyclictest394853-21awk08:20:010
372635994440,3cyclictest468418-21sort12:05:010
372639994340,2cyclictest0-21swapper/112:31:591
372639994336,5cyclictest474893-21latency_hist12:25:011
372639994322,19cyclictest0-21swapper/110:55:241
37263999431,40cyclictest714-21Xorg10:14:591
37263999431,23cyclictest397154-21cstates08:25:141
37263999430,30cyclictest1-21systemd11:55:011
372635994333,8cyclictest375770-21kworker/u8:1+flush-179:008:00:220
372642994236,4cyclictest383721-21turbostat07:45:003
37264099420,1cyclictest0-21swapper/209:21:592
372639994236,5cyclictest415245-21kworker/u8:0+events_unbound09:40:011
372639994222,16cyclictest0-21swapper/111:30:171
372639994215,24cyclictest405638-21ntp_192.168.11408:50:201
37263999421,38cyclictest714-21Xorg11:19:591
37263999420,41cyclictest0-21swapper/109:59:591
37263999420,41cyclictest0-21swapper/109:59:591
372635994232,8cyclictest406750-21apt-get08:55:110
372635994229,10cyclictest404657-21munin-run08:50:000
372635994229,10cyclictest404657-21munin-run08:50:000
372639994121,18cyclictest1213033-21systemd-journal09:42:431
372635994137,3cyclictest415245-21kworker/u8:0+flush-179:009:30:210
372635994133,6cyclictest461950-21kworker/u8:3+flush-179:011:50:220
37263599411,37cyclictest714-21Xorg12:27:590
372642994037,2cyclictest0-21swapper/309:02:003
372642994035,4cyclictest430897-21turbostat10:10:003
372642994033,5cyclictest427465-21turbostat10:00:013
372642994033,5cyclictest427465-21turbostat10:00:003
37264299400,3cyclictest403071-21turbostat08:45:003
372635994034,4cyclictest1213033-21systemd-journal12:10:260
372635994025,14cyclictest458966-21apt-get11:35:130
372635994024,15cyclictest0-21swapper/007:25:220
37263599400,22cyclictest0-21swapper/010:45:180
372642993936,2cyclictest0-21swapper/311:29:593
372642993934,4cyclictest470117-21turbostat12:10:003
372642993934,4cyclictest425861-21turbostat09:55:013
372642993933,5cyclictest413133-21turbostat09:14:593
372642993933,5cyclictest385311-21turbostat07:49:593
37264299390,37cyclictest424270-21turbostat09:50:003
372640993936,2cyclictest0-21swapper/207:30:592
372640993935,2cyclictest0-21swapper/210:29:552
37264099390,37cyclictest0-21swapper/208:26:582
372639993928,9cyclictest1213033-21systemd-journal09:30:011
372639993920,17cyclictest0-21swapper/107:55:151
372639993918,19cyclictest425867-21basename09:55:011
372642993832,5cyclictest455546-21turbostat11:25:013
37264299380,37cyclictest391671-21turbostat08:10:003
372640993835,2cyclictest0-21swapper/207:55:592
37264099380,36cyclictest0-21swapper/212:38:592
37264099380,36cyclictest0-21swapper/210:41:592
37264099380,36cyclictest0-21swapper/208:04:002
37263999380,2cyclictest714-21Xorg10:08:591
372642993731,4cyclictest401472-21turbostat08:40:013
37264299370,36cyclictest0-21swapper/307:37:593
372640993734,2cyclictest0-21swapper/211:26:002
372640993734,2cyclictest0-21swapper/209:38:582
37264099370,35cyclictest0-21swapper/211:21:592
372639993734,2cyclictest0-21swapper/108:38:591
372639993732,4cyclictest432453-21kworker/u8:1+flush-179:010:40:271
37263999372,19cyclictest0-21swapper/107:10:171
372639993721,14cyclictest0-21swapper/112:10:251
37263999370,23cyclictest399360-21/usr/sbin/munin08:30:221
37263999370,22cyclictest472430-21cat12:15:151
372635993733,3cyclictest403096-21systemd-run08:45:000
37263599370,21cyclictest0-21swapper/011:15:000
372642993634,1cyclictest0-21swapper/311:56:593
372642993634,1cyclictest0-21swapper/311:04:583
372642993634,1cyclictest0-21swapper/308:24:583
372642993631,4cyclictest445727-21turbostat10:54:593
37264299360,35cyclictest0-21swapper/312:20:003
37264299360,35cyclictest0-21swapper/311:54:593
37264299360,35cyclictest0-21swapper/311:10:593
37264299360,35cyclictest0-21swapper/310:22:583
37264299360,35cyclictest0-21swapper/310:01:593
37264299360,35cyclictest0-21swapper/307:28:593
372640993633,2cyclictest0-21swapper/211:41:592
372640993633,2cyclictest0-21swapper/210:24:552
372640993633,2cyclictest0-21swapper/208:33:002
372639993624,11cyclictest380730-21kworker/u8:0+flush-179:007:35:171
37263999361,21cyclictest0-21swapper/109:15:231
372635993629,5cyclictest372512-21latency_hist07:10:020
372635993623,12cyclictest412976-21unixbench-2d09:10:240
37263599362,26cyclictest714-21Xorg08:10:590
372642993533,1cyclictest0-21swapper/311:33:593
372642993533,1cyclictest0-21swapper/311:19:593
372642993533,1cyclictest0-21swapper/310:30:593
37264299350,34cyclictest0-21swapper/310:58:593
37264299350,1cyclictest0-21swapper/311:10:003
372640993533,1cyclictest0-21swapper/207:29:592
372640993532,2cyclictest0-21swapper/209:05:592
37264099350,1cyclictest0-21swapper/212:26:592
37264099350,1cyclictest0-21swapper/207:24:592
37263999353,25cyclictest59-21kcompactd009:00:141
372639993524,6cyclictest0-21swapper/110:15:121
372639993514,19cyclictest436738-21cut10:25:171
37263599353,26cyclictest2304-21lightdm-gtk-gre12:05:590
372642993432,1cyclictest0-21swapper/311:48:593
372642993432,1cyclictest0-21swapper/307:13:593
372640993431,2cyclictest0-21swapper/207:12:592
37263999343,26cyclictest2304-21lightdm-gtk-gre10:51:581
37263599342,27cyclictest714-21Xorg07:59:590
37263599340,18cyclictest0-21swapper/009:25:180
372642993331,1cyclictest0-21swapper/312:36:593
372642993331,1cyclictest0-21swapper/312:00:583
372642993331,1cyclictest0-21swapper/309:06:593
372642993331,1cyclictest0-21swapper/308:51:583
372642993330,2cyclictest0-21swapper/307:33:593
372640993330,2cyclictest0-21swapper/212:22:002
37263599330,15cyclictest0-21swapper/012:20:200
372642993230,1cyclictest0-21swapper/312:27:593
372642993230,1cyclictest0-21swapper/310:49:563
372642993230,1cyclictest0-21swapper/307:53:593
372640993230,1cyclictest0-21swapper/208:09:592
372640993229,2cyclictest0-21swapper/211:08:592
37263599323,26cyclictest714-21Xorg09:35:590
372642993129,1cyclictest0-21swapper/310:14:003
372642993129,1cyclictest0-21swapper/307:19:593
372642993028,1cyclictest0-21swapper/308:34:003
372642993028,1cyclictest0-21swapper/308:14:593
372642993028,1cyclictest0-21swapper/308:02:593
372640993027,2cyclictest0-21swapper/212:16:592
372640993027,2cyclictest0-21swapper/208:40:592
37264099300,28cyclictest0-21swapper/209:12:592
37263999301,23cyclictest372669-21latency_hist07:10:021
4577091290,7ptp4l441ktimers/309:40:003
372642992927,1cyclictest0-21swapper/310:25:033
372642992927,1cyclictest0-21swapper/308:25:593
372642992926,2cyclictest0-21swapper/308:45:133
372642992926,2cyclictest0-21swapper/308:45:133
372640992926,2cyclictest0-21swapper/211:30:132
372640992926,2cyclictest0-21swapper/210:33:592
372640992926,2cyclictest0-21swapper/210:13:002
372640992926,2cyclictest0-21swapper/209:55:142
372640992926,2cyclictest0-21swapper/209:55:132
372640992926,2cyclictest0-21swapper/209:00:122
372640992926,2cyclictest0-21swapper/208:16:592
37264099290,27cyclictest0-21swapper/209:15:132
37264099290,27cyclictest0-21swapper/208:55:032
37264099290,27cyclictest0-21swapper/208:10:132
37264099290,1cyclictest0-21swapper/208:20:142
4577091280,6ptp4l441ktimers/309:29:553
372642992826,1cyclictest0-21swapper/312:10:133
372642992826,1cyclictest0-21swapper/309:23:593
37264299280,27cyclictest0-21swapper/309:30:123
37264299280,26cyclictest0-21swapper/307:20:133
372640992825,2cyclictest0-21swapper/211:56:592
372640992825,2cyclictest0-21swapper/211:01:582
372640992825,2cyclictest0-21swapper/208:50:592
37264099280,2cyclictest0-21swapper/212:00:582
37264099280,2cyclictest0-21swapper/210:55:122
37264099280,2cyclictest0-21swapper/210:00:132
37264099280,27cyclictest0-21swapper/211:50:112
37264099280,27cyclictest0-21swapper/207:42:592
37264099280,26cyclictest0-21swapper/209:48:002
37264099280,26cyclictest0-21swapper/209:30:132
37264099280,26cyclictest0-21swapper/209:29:002
37264099280,26cyclictest0-21swapper/207:45:112
372642992725,1cyclictest0-21swapper/310:35:113
372642992724,2cyclictest0-21swapper/309:40:133
37264099270,2cyclictest0-21swapper/207:38:592
37264099270,25cyclictest0-21swapper/210:46:592
37264099270,24cyclictest0-21swapper/212:34:562
372642992624,1cyclictest0-21swapper/312:20:133
372642992624,1cyclictest0-21swapper/309:17:003
372640992624,1cyclictest0-21swapper/210:19:592
372640992624,1cyclictest0-21swapper/207:54:542
372640992623,2cyclictest0-21swapper/212:10:132
372640992623,2cyclictest0-21swapper/211:39:552
37264099260,2cyclictest0-21swapper/210:50:592
37264099260,24cyclictest0-21swapper/207:16:592
4577091250,6ptp4l61490irq/134-eno1-TxRx-008:20:013
4577091250,5ptp4l61490irq/134-eno1-TxRx-010:19:553
4577091250,5ptp4l441ktimers/310:44:563
4577091250,4ptp4l441ktimers/309:00:013
4577091250,4ptp4l441ktimers/308:00:013
372640992523,1cyclictest0-21swapper/211:50:002
372640992523,1cyclictest0-21swapper/210:09:592
4577091240,4ptp4l61490irq/134-eno1-TxRx-012:34:563
372640992421,2cyclictest0-21swapper/212:09:562
372640992421,2cyclictest0-21swapper/208:35:112
372640992320,2cyclictest0-21swapper/211:18:582
372640992320,2cyclictest0-21swapper/209:52:582
372640992017,2cyclictest0-21swapper/211:14:562
372640992017,2cyclictest0-21swapper/210:36:592
372640992017,2cyclictest0-21swapper/209:44:002
372640991815,2cyclictest0-21swapper/208:46:002
372640991815,2cyclictest0-21swapper/208:45:592
3726409930,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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