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2026-03-29 - 15:11
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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 792 highest latencies:
System rackeslot6.osadl.org (updated Sun Mar 29, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
422116998476,6cyclictest427091-21latency_hist19:25:010
422121997752,23cyclictest525818-21apt-get00:30:111
422121997648,17cyclictest443256-21apt-get20:15:121
422116997465,7cyclictest451240-21latency_hist20:40:010
422116997164,5cyclictest507722-21latency_hist23:35:010
422116996657,6cyclictest506134-21latency_hist23:30:020
422121996542,21cyclictest523977-21latency_hist00:25:001
422121996357,5cyclictest468979-21kworker/u8:2+flush-179:021:39:591
422121996355,6cyclictest462593-21kworker/u8:1+flush-179:022:15:221
42212199621,57cyclictest0-21swapper/122:40:121
422116996254,6cyclictest455995-21latency_hist20:55:010
422122996156,3cyclictest0-21swapper/219:59:002
422121996051,7cyclictest473808-21kworker/u8:2+flush-179:022:40:001
422121996050,8cyclictest462877-21apt-get21:15:131
422121996026,21cyclictest510291-21grep23:40:191
422116996054,5cyclictest266-21systemd-journal21:25:010
422116996047,11cyclictest266-21systemd-journal00:40:000
422126995856,1cyclictest0-21swapper/319:58:593
422121995853,4cyclictest427126-21kworker/u8:1+flush-179:020:05:221
422121995750,5cyclictest512536-21kworker/u8:2+events_unbound00:03:591
422116995753,2cyclictest714-21Xorg20:15:590
422116995746,9cyclictest497915-21apt-get23:05:120
422116995727,14cyclictest460990-21apt-key21:10:010
422121995652,2cyclictest714-21Xorg19:28:001
422121995648,6cyclictest476948-21latency_hist22:00:011
422116995651,4cyclictest714-21Xorg20:43:590
422121995549,5cyclictest443050-21kworker/u8:3+flush-179:020:30:231
422116995545,8cyclictest439828-21latency_hist20:05:010
422121995449,4cyclictest512536-21kworker/u8:2+flush-179:000:40:001
422121995348,3cyclictest417505-21kworker/u8:3+flush-179:019:35:111
422121995345,7cyclictest266-21systemd-journal23:25:201
422121995344,6cyclictest525564-21latency_hist00:30:011
422121995339,13cyclictest432931-21kworker/u8:2+flush-179:020:55:261
42212199530,39cyclictest431870-21turbostat19:44:551
422116995347,4cyclictest512536-21kworker/u8:2+flush-179:000:04:000
422121995244,5cyclictest421970-21latency_hist19:10:011
422116995241,9cyclictest422539-21diskstats19:10:140
422116995240,10cyclictest474316-21diskstats21:50:150
422116995148,2cyclictest0-21swapper/000:20:000
422121995039,9cyclictest428934-21apt-get19:30:101
422121995029,19cyclictest496108-21systemd-run23:00:001
422116995045,4cyclictest519228-21kworker/u8:3+flush-179:000:20:240
4577091490,13ptp4l61490irq/134-eno1-TxRx-019:10:003
42212199490,45cyclictest0-21swapper/121:10:031
422116994943,4cyclictest427126-21kworker/u8:1+flush-179:019:30:220
422116994942,5cyclictest432931-21kworker/u8:2+flush-179:020:20:200
422116994911,32cyclictest489960-21apt-get22:40:130
422121994840,6cyclictest510-21rs:main1
422121994835,11cyclictest515727-40mandb00:00:021
422116994841,6cyclictest480146-21munin-run22:10:000
422116994837,7cyclictest489744-21munin-run22:40:010
422121994740,5cyclictest519195-21latency_hist00:10:011
422121994635,8cyclictest443050-21kworker/u8:3+flush-179:020:30:001
42211699468,2cyclictest714-21Xorg22:12:590
422116994642,3cyclictest489740-21kworker/u8:1+flush-179:022:45:250
422121994541,2cyclictest714-21Xorg19:58:591
42212699440,42cyclictest0-21swapper/319:26:593
42212699440,2cyclictest0-21swapper/320:32:593
422122994440,2cyclictest0-21swapper/220:54:552
422121994437,5cyclictest266-21systemd-journal23:12:201
422121994432,11cyclictest432931-21kworker/u8:2+flush-179:021:05:571
422116994440,3cyclictest515733-40sh00:00:010
422116994435,7cyclictest0-21swapper/021:15:140
422116994428,8cyclictest171rcu_preempt22:55:000
4577091430,7ptp4l431rcuc/323:25:003
422122994339,2cyclictest0-21swapper/223:31:592
42212299430,40cyclictest0-21swapper/219:26:592
42212299430,2cyclictest0-21swapper/220:32:592
422121994339,3cyclictest454447-21systemd-run20:50:001
422121994338,4cyclictest432931-21kworker/u8:2+flush-179:020:50:231
422121994336,5cyclictest714-21Xorg19:54:591
422116994334,7cyclictest470857-21apt-get21:40:100
422126994239,1cyclictest0-21swapper/320:54:553
422121994238,3cyclictest478593-21systemd-run22:05:001
422121994238,3cyclictest1-21systemd23:40:011
422121994235,4cyclictest266-21systemd-journal20:45:001
422116994240,1cyclictest0-21swapper/023:04:540
422116994239,2cyclictest0-21swapper/019:44:590
422116994236,4cyclictest428678-21latency_hist19:30:010
422116994232,8cyclictest425169-21apt-get19:15:570
422116994221,9cyclictest460782-21turbostat21:14:560
422126994138,2cyclictest0-21swapper/323:31:583
422126994134,5cyclictest451249-21turbostat20:40:003
42212199412,32cyclictest714-21Xorg22:46:591
42212199410,5cyclictest502699-21turbostat23:24:551
422116994137,3cyclictest714-21Xorg20:09:000
422116994136,3cyclictest512738-21/usr/sbin/munin23:50:200
422116994133,7cyclictest526231-21gltestperf00:30:170
422116994131,8cyclictest472443-21apt-get21:45:110
42212699400,37cyclictest0-21swapper/319:45:593
42212199403,29cyclictest714-21Xorg22:34:591
42212199402,32cyclictest0-21swapper/122:26:591
42212199402,31cyclictest714-21Xorg21:44:591
422121994020,18cyclictest0-21swapper/123:20:011
42212199401,3cyclictest714-21Xorg23:34:591
42212199401,3cyclictest714-21Xorg23:09:001
42212199401,33cyclictest714-21Xorg21:28:001
42211699408,4cyclictest0-21swapper/021:36:590
422116994036,3cyclictest467409-21munin-run21:30:010
422116994032,7cyclictest509165-21unixbench-2d23:35:250
422116994031,7cyclictest500551-21threads23:10:240
42211699401,2cyclictest714-21Xorg20:10:590
42211699400,38cyclictest714-21Xorg23:18:590
42212299390,36cyclictest0-21swapper/222:40:012
42212199393,30cyclictest0-21swapper/121:32:591
42212199393,30cyclictest0-21swapper/121:32:591
42212199392,31cyclictest714-21Xorg22:24:001
42212199392,31cyclictest714-21Xorg22:23:591
42212199392,31cyclictest480396-21apt-get22:10:121
42212199391,2cyclictest714-21Xorg22:09:001
422116993936,2cyclictest0-21swapper/023:49:000
422116993935,2cyclictest714-21Xorg22:31:590
42211699391,2cyclictest714-21Xorg00:25:580
42212699380,36cyclictest0-21swapper/322:49:553
42212699380,36cyclictest0-21swapper/319:21:593
42212699380,35cyclictest0-21swapper/323:44:553
42212699380,1cyclictest0-21swapper/321:48:593
422122993834,3cyclictest0-21swapper/223:16:592
42212299380,35cyclictest0-21swapper/219:45:592
42212299380,35cyclictest0-21swapper/219:22:002
42212199383,5cyclictest521036-21apt-get00:15:131
422121993827,10cyclictest425279-21apt-get19:20:001
422121993820,16cyclictest0-21swapper/119:10:171
422121993818,17cyclictest0-21swapper/120:35:111
42212199380,2cyclictest714-21Xorg20:13:591
422116993830,7cyclictest468783-21timerwakeupswit21:30:250
422116993830,7cyclictest468783-21timerwakeupswit21:30:250
422116993829,7cyclictest520647-21unixbench-2d00:10:240
42211699380,2cyclictest714-21Xorg20:57:590
42211699380,2cyclictest0-21swapper/022:56:590
422126993734,2cyclictest0-21swapper/323:16:583
42212299370,2cyclictest0-21swapper/223:44:542
422121993734,2cyclictest0-21swapper/120:23:591
42212199373,30cyclictest714-21Xorg20:04:001
422121993731,4cyclictest519451-21apt-get00:10:121
422121993719,17cyclictest494327-21unixbench-2d22:50:251
422121993717,18cyclictest0-21swapper/119:45:141
42212199371,31cyclictest0-21swapper/123:52:001
422116993736,1cyclictest0-21swapper/022:04:550
422116993734,2cyclictest0-21swapper/020:27:590
422116993732,4cyclictest499279-21kworker/u8:2+flush-179:023:20:250
42211699372,31cyclictest435301-21apt-get19:50:140
422126993634,1cyclictest0-21swapper/320:21:593
422122993632,3cyclictest0-21swapper/222:05:592
422122993632,2cyclictest0-21swapper/222:26:592
42212299360,1cyclictest0-21swapper/222:49:562
42212199364,24cyclictest2304-21lightdm-gtk-gre23:01:591
42212199361,31cyclictest0-21swapper/119:21:591
42211699363,30cyclictest457857-21apt-get21:00:130
422116993630,5cyclictest430277-21turbostat19:39:550
422116993627,7cyclictest509930-21fschecks_count23:40:150
422126993532,2cyclictest0-21swapper/322:05:593
422126993531,2cyclictest0-21swapper/322:26:583
422122993533,1cyclictest0-21swapper/223:39:582
422121993532,2cyclictest0-21swapper/121:46:591
42212199351,5cyclictest1-21systemd21:55:001
42212199351,28cyclictest0-21swapper/123:45:131
42212199351,26cyclictest464488-21apt-get21:20:121
422116993530,4cyclictest453985-21sendmail_mailqu20:45:230
42211699352,5cyclictest433716-21apt-get19:45:130
422126993432,1cyclictest0-21swapper/323:39:583
422126993431,2cyclictest0-21swapper/300:20:593
422126993427,5cyclictest425233-21turbostat19:20:003
422122993431,2cyclictest0-21swapper/200:21:002
422122993429,2cyclictest0-21swapper/220:38:592
422122993424,8cyclictest0-21swapper/223:20:592
422116993426,7cyclictest518216-21fschecks_time00:05:160
422116993413,6cyclictest476958-21munin-run22:00:000
422126993327,4cyclictest491299-21turbostat22:45:013
422122993329,2cyclictest0-21swapper/222:45:012
422122993329,2cyclictest0-21swapper/200:00:592
422122993326,6cyclictest0-21swapper/221:10:032
422116993330,2cyclictest714-21Xorg22:24:000
422116993330,2cyclictest714-21Xorg22:24:000
422116993329,3cyclictest482401-21gltestperf22:15:160
422126993229,2cyclictest0-21swapper/300:01:003
422126993225,6cyclictest0-21swapper/321:10:033
42212699320,2cyclictest0-21swapper/300:00:013
422122993229,2cyclictest0-21swapper/219:10:592
42212299320,1cyclictest0-21swapper/200:00:012
422116993226,5cyclictest485309-21cpuspeed_turbos22:25:130
422116993224,7cyclictest437257-21fschecks_time19:55:170
42211699321,30cyclictest0-21swapper/020:30:580
422122993128,2cyclictest0-21swapper/219:44:592
42212299310,2cyclictest0-21swapper/221:48:582
422126993028,1cyclictest0-21swapper/319:10:593
422126993027,2cyclictest0-21swapper/319:44:593
42212699300,28cyclictest0-21swapper/320:45:133
42212699300,28cyclictest0-21swapper/300:15:143
422122993026,2cyclictest0-21swapper/222:50:592
42212299300,2cyclictest0-21swapper/220:40:132
42212299300,28cyclictest0-21swapper/221:25:122
42212299300,21cyclictest0-21swapper/221:50:132
4577091290,7ptp4l61490irq/134-eno1-TxRx-022:35:003
4577091290,6ptp4l61490irq/134-eno1-TxRx-023:55:013
422126992926,2cyclictest0-21swapper/322:51:003
42212699290,28cyclictest0-21swapper/320:40:133
42212699290,27cyclictest0-21swapper/323:25:133
42212699290,27cyclictest0-21swapper/300:10:133
422122992927,1cyclictest0-21swapper/219:19:592
422122992924,2cyclictest0-21swapper/221:19:552
422122992924,2cyclictest0-21swapper/200:37:582
42212299290,2cyclictest0-21swapper/220:55:142
42212299290,2cyclictest0-21swapper/200:15:132
42212299290,28cyclictest0-21swapper/220:20:122
42212299290,28cyclictest0-21swapper/220:15:142
42212299290,27cyclictest0-21swapper/223:25:122
42212299290,27cyclictest0-21swapper/222:20:592
42212299290,27cyclictest0-21swapper/222:20:582
42212299290,27cyclictest0-21swapper/220:45:132
42212299290,27cyclictest0-21swapper/220:05:592
42212299290,27cyclictest0-21swapper/200:28:592
42212299290,27cyclictest0-21swapper/200:05:142
42212299290,21cyclictest0-21swapper/200:10:132
4577091280,7ptp4l61490irq/134-eno1-TxRx-023:10:013
4577091280,7ptp4l61490irq/134-eno1-TxRx-000:40:023
4577091280,6ptp4l61490irq/134-eno1-TxRx-021:25:013
422126992826,1cyclictest0-21swapper/300:05:133
422126992825,2cyclictest0-21swapper/321:50:133
42212699280,2cyclictest0-21swapper/320:55:143
42212699280,27cyclictest0-21swapper/320:15:143
42212699280,27cyclictest0-21swapper/320:06:003
42212699280,27cyclictest0-21swapper/300:28:593
42212699280,26cyclictest0-21swapper/321:25:123
42212699280,1cyclictest0-21swapper/300:30:133
422122992823,2cyclictest0-21swapper/220:28:592
42212299280,2cyclictest0-21swapper/223:02:592
42212299280,2cyclictest0-21swapper/200:30:132
4577091270,7ptp4l441ktimers/320:29:553
4577091270,7ptp4l441ktimers/320:15:013
4577091270,6ptp4l61490irq/134-eno1-TxRx-023:05:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-022:20:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-021:59:563
4577091270,6ptp4l61490irq/134-eno1-TxRx-019:40:003
4577091270,6ptp4l441ktimers/322:05:003
4577091270,6ptp4l441ktimers/321:35:003
4577091270,6ptp4l441ktimers/321:34:593
4577091270,6ptp4l441ktimers/321:10:013
4577091270,5ptp4l441ktimers/322:39:563
4577091270,5ptp4l441ktimers/319:55:023
422126992723,3cyclictest0-21swapper/321:19:553
42212699270,2cyclictest0-21swapper/322:10:143
42212699270,26cyclictest0-21swapper/321:44:583
42212699270,25cyclictest0-21swapper/323:10:133
422122992724,2cyclictest0-21swapper/221:44:552
422122992723,2cyclictest0-21swapper/223:49:552
422122992723,2cyclictest0-21swapper/223:09:592
42212299270,19cyclictest0-21swapper/223:10:592
4577091260,6ptp4l61490irq/134-eno1-TxRx-022:25:013
4577091260,6ptp4l61490irq/134-eno1-TxRx-022:25:013
4577091260,5ptp4l441ktimers/321:05:013
4577091250,5ptp4l441ktimers/323:00:003
4577091250,5ptp4l441ktimers/321:40:003
4577091250,5ptp4l441ktimers/319:34:563
4577091250,4ptp4l61490irq/134-eno1-TxRx-020:05:003
422126992522,2cyclictest0-21swapper/323:49:553
422122992522,2cyclictest0-21swapper/219:52:592
422122992420,2cyclictest0-21swapper/220:13:002
422122992319,2cyclictest0-21swapper/222:33:582
422122992319,2cyclictest0-21swapper/221:58:592
422122992219,2cyclictest0-21swapper/222:11:002
42212299220,2cyclictest0-21swapper/220:00:142
231999220,13rtkit-daemon495-21gpm19:05:460
422122992117,2cyclictest0-21swapper/223:54:002
422122992017,2cyclictest0-21swapper/222:19:592
422122991916,2cyclictest0-21swapper/221:37:592
422122991916,2cyclictest0-21swapper/221:05:002
422122991714,2cyclictest0-21swapper/222:02:592
422122991613,2cyclictest0-21swapper/222:57:592
422122991513,1cyclictest0-21swapper/219:35:002
422122991210,1cyclictest0-21swapper/221:34:592
422122991210,1cyclictest0-21swapper/221:34:582
4221229996,2cyclictest0-21swapper/219:36:132
4221229990,7cyclictest0-21swapper/221:09:592
4221229985,2cyclictest0-21swapper/221:21:472
4221229930,2cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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