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2026-06-14 - 03:33
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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 Jun 14, 2026 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
285482199149134,11cyclictest1213033-21systemd-journal00:20:001
285482199137104,22cyclictest2960508-21latency_hist00:35:021
285482199127116,8cyclictest2894126-21kworker/u8:1+flush-179:022:45:241
285482099126118,5cyclictest2872926-21kworker/u8:1+flush-179:020:15:010
285482099126118,5cyclictest2872926-21kworker/u8:1+flush-179:020:15:010
285482199123114,7cyclictest2861285-21latency_hist19:30:011
28548219911593,19cyclictest2958918-21latency_hist00:30:001
285482199115106,6cyclictest2872926-21kworker/u8:1+flush-179:020:20:001
285482199111101,7cyclictest2859700-21latency_hist19:25:011
285482099111101,7cyclictest2897336-21latency_hist21:20:010
28548209910895,10cyclictest2934725-21apt-get23:15:000
28548209910495,6cyclictest1213033-21systemd-journal00:40:010
28548219910293,6cyclictest2894126-21kworker/u8:1+flush-179:022:00:261
2854821999976,20cyclictest2952549-21latency_hist00:10:021
2854820999988,7cyclictest1-21systemd20:35:000
2854821999889,6cyclictest2941368-21kworker/u8:2+flush-179:000:00:011
2854821999889,6cyclictest2941368-21kworker/u8:2+flush-179:000:00:001
2854820999789,5cyclictest2839684-21kworker/u8:3+flush-179:019:50:270
2854821999685,9cyclictest1213033-21systemd-journal20:35:001
2854820999586,7cyclictest2872949-21latency_hist20:05:010
2854820999586,6cyclictest2923319-21latency_hist22:40:010
2854821999487,5cyclictest2938126-21kworker/u8:1+flush-179:000:00:161
2854821999485,7cyclictest1213033-21systemd-journal23:10:001
2854820999276,13cyclictest1213033-21systemd-journal00:00:000
2854820999276,13cyclictest1213033-21systemd-journal00:00:000
2854821999080,7cyclictest1213033-21systemd-journal21:20:011
2854821998979,7cyclictest2942945-21latency_hist23:40:011
2854821998878,7cyclictest2861319-21kworker/u8:0+flush-179:019:35:221
2854820998879,6cyclictest2926737-21kworker/u8:2+flush-179:022:55:130
2854820998878,7cyclictest2862872-21latency_hist19:35:010
2854820998776,5cyclictest2896395-21kworker/u8:2+flush-179:021:30:240
2854820998576,6cyclictest1213033-21systemd-journal00:04:000
2854820998574,8cyclictest2874535-21latency_hist20:10:020
2854820998573,7cyclictest2872926-21kworker/u8:1+flush-179:020:15:220
2854820998477,5cyclictest2896395-21kworker/u8:2+flush-179:021:50:250
2854820998475,7cyclictest2894126-21kworker/u8:1+flush-179:021:40:000
2854821998375,6cyclictest2839684-21kworker/u8:3+flush-179:020:00:201
2854820998374,6cyclictest2933124-21latency_hist23:10:010
2854820998373,7cyclictest2896395-21kworker/u8:2+flush-179:021:25:220
2854820998275,5cyclictest2854599-21kworker/u8:1+flush-179:019:25:220
2854821998173,6cyclictest2926737-21kworker/u8:2+flush-179:022:50:181
2854821998170,8cyclictest2861541-21apt-get19:30:121
2854820998173,5cyclictest2938126-21kworker/u8:1+flush-179:023:35:230
2854821998069,8cyclictest2931539-21latency_hist23:05:011
2854820998073,5cyclictest2894126-21kworker/u8:1+events_unbound21:10:010
2854820998071,6cyclictest2894126-21kworker/u8:1+flush-179:022:45:150
2854820997973,4cyclictest2954135-21latency_hist00:15:020
2854820997973,4cyclictest2954135-21latency_hist00:15:010
2854820997971,5cyclictest2894126-21kworker/u8:1+flush-179:023:00:210
2854820997968,9cyclictest2856505-21latency_hist19:15:000
2854820997967,8cyclictest2931520-21kworker/u8:0+flush-179:000:05:170
2854820997967,10cyclictest1213033-21systemd-journal22:35:010
2854821997849,26cyclictest1213033-21systemd-journal21:30:001
2854820997872,4cyclictest2883001-21apt-get20:35:110
2854820997867,8cyclictest2957327-21latency_hist00:25:010
2854820997867,8cyclictest2881159-21latency_hist20:30:010
2854820997668,5cyclictest2916929-21kworker/u8:2+flush-179:022:20:170
2854820997567,5cyclictest2915587-21kworker/u8:0+events_unbound22:30:010
2854821997468,5cyclictest2882210-21kworker/u8:3+events_unbound20:45:231
2854821997467,5cyclictest2894126-21kworker/u8:1+flush-179:022:15:231
2854821997363,8cyclictest2952804-21apt-get00:10:151
2854821997363,8cyclictest2952804-21apt-get00:10:151
2854821997363,8cyclictest2866319-21apt-get19:45:121
2854821997361,10cyclictest2910328-21apt-get22:00:001
2854820997268,3cyclictest2931572-21kworker/u8:2+flush-179:023:20:260
2854820997263,7cyclictest2936565-21latency_hist23:20:000
2854820997249,5cyclictest2905533-21/usr/sbin/munin21:45:160
2854821997164,5cyclictest2929933-21latency_hist23:00:011
2854820997165,4cyclictest2957360-21kworker/u8:0+flush-179:000:30:200
2854821997063,5cyclictest2889622-21apt-get20:55:111
2854821997059,9cyclictest510-21rs:main1
2854820997065,4cyclictest2896395-21kworker/u8:2+events_unbound21:20:230
2854820996962,4cyclictest2896395-21kworker/u8:2+flush-179:021:40:130
2854820996860,5cyclictest2908445-21kworker/u8:0+events_unbound22:05:150
2854820996760,4cyclictest2882210-21kworker/u8:3+flush-179:021:00:200
2854821996554,8cyclictest1213033-21systemd-journal21:31:311
2854820996555,7cyclictest2871091-21latency_hist20:00:010
2854821996458,4cyclictest2941368-21kworker/u8:2+flush-179:023:45:211
2854820996458,4cyclictest2876154-21kworker/u8:0+events_unbound21:15:010
2854820996456,6cyclictest2854599-21kworker/u8:1+flush-179:019:15:220
2854820996456,5cyclictest2872926-21kworker/u8:1+flush-179:020:20:170
2854820996357,4cyclictest2941368-21kworker/u8:2+flush-179:023:40:230
2854820996356,5cyclictest2854599-21kworker/u8:1+flush-179:019:40:230
2854820996252,8cyclictest2915587-21kworker/u8:0+events_unbound22:40:150
2854821996154,5cyclictest2896395-21kworker/u8:2+flush-179:021:40:231
2854821996148,10cyclictest2933665-21diskstats23:10:121
2854820996158,2cyclictest714-21Xorg20:44:590
2854830996058,1cyclictest0-21swapper/322:14:583
2854821996057,2cyclictest2885230-21kworker/u8:1+events_unbound20:40:241
2854821996054,4cyclictest2938126-21kworker/u8:1+flush-179:023:25:161
2854821996054,4cyclictest2908445-21kworker/u8:0+flush-179:022:05:151
2854821995954,4cyclictest2896395-21kworker/u8:2+flush-179:021:20:221
2854821995953,5cyclictest2952528-21kworker/u8:3+flush-179:000:20:221
2854821995953,4cyclictest2915587-21kworker/u8:0+events_unbound22:40:221
2854821995953,4cyclictest2882210-21kworker/u8:3+events_unbound20:35:141
2854821995952,5cyclictest2915587-21kworker/u8:0+events_unbound22:35:151
2854821995949,8cyclictest2908467-21latency_hist21:55:011
2854820995952,4cyclictest2894126-21kworker/u8:1+events_unbound22:00:220
2854821995853,3cyclictest2861319-21kworker/u8:0+flush-179:019:55:001
2854821995852,4cyclictest2931520-21kworker/u8:0+flush-179:023:30:211
2854821995850,6cyclictest2894126-21kworker/u8:1+events_unbound22:15:011
2854821995849,8cyclictest2931572-21kworker/u8:2+events_unbound23:25:011
2854821995748,6cyclictest2935205-21/usr/sbin/munin23:15:231
2854821995745,10cyclictest2916929-21kworker/u8:2+flush-179:022:30:221
2854820995752,3cyclictest2938126-21kworker/u8:1+flush-179:023:25:160
2854821995651,4cyclictest2941368-21kworker/u8:2+flush-179:023:50:221
2854821995650,4cyclictest2894126-21kworker/u8:1+flush-179:021:35:151
2854820995647,7cyclictest2876154-21kworker/u8:0+events_unbound20:45:180
2854821995552,1cyclictest0-21swapper/120:05:591
2854821995550,4cyclictest2882210-21kworker/u8:3+events_unbound21:05:241
2854821995549,4cyclictest2905330-21kworker/u8:3+flush-179:021:45:201
2854821995548,5cyclictest2916929-21kworker/u8:2+events_unbound22:20:221
2854821995541,12cyclictest1213033-21systemd-journal19:43:311
2854821995446,6cyclictest2839672-21kworker/u8:0+flush-179:019:10:201
2854820995447,4cyclictest2913801-21kworker/u8:3+events_unbound22:10:090
2854821995349,3cyclictest2876154-21kworker/u8:0+flush-179:021:04:321
2854820995347,5cyclictest2861319-21kworker/u8:0+flush-179:019:45:240
2854820995347,4cyclictest2947700-21latency_hist23:55:000
2854820995247,4cyclictest2861319-21kworker/u8:0+flush-179:019:35:170
2854821995145,5cyclictest2960487-21kworker/u8:1+flush-179:000:35:221
2854820995146,4cyclictest2894126-21kworker/u8:1+flush-179:021:55:280
2854820995146,4cyclictest2882210-21kworker/u8:3+flush-179:020:55:160
4577091500,13ptp4l441ktimers/319:10:003
2854821994939,8cyclictest2839684-21kworker/u8:3+flush-179:019:55:161
2854830994745,1cyclictest0-21swapper/323:14:593
2854821994438,4cyclictest2944530-21latency_hist23:45:011
2854826994340,2cyclictest0-21swapper/222:43:592
2854820994337,5cyclictest2915364-21turbostat22:19:560
2854830994239,2cyclictest0-21swapper/320:32:583
2854821994239,2cyclictest2872926-21kworker/u8:1+events_unbound20:20:261
2854821994237,4cyclictest2894126-21kworker/u8:1+events_unbound21:10:241
2854821994236,5cyclictest2876154-21kworker/u8:0+flush-179:020:25:271
285482099410,40cyclictest0-21swapper/023:47:590
285483099400,38cyclictest2890989-21turbostat21:00:003
285483099400,1cyclictest0-21swapper/322:38:593
2854830993937,1cyclictest0-21swapper/322:53:003
2854826993936,2cyclictest0-21swapper/200:18:582
285482199390,37cyclictest714-21Xorg19:17:581
2854820993936,2cyclictest0-21swapper/000:16:580
285482699380,36cyclictest0-21swapper/219:46:582
285482699380,30cyclictest0-21swapper/220:50:592
2854821993832,5cyclictest2915587-21kworker/u8:0+flush-179:022:25:191
2854820993830,6cyclictest2931520-21kworker/u8:0+flush-179:023:30:210
2854830993732,4cyclictest2920146-21turbostat22:30:003
285483099370,1cyclictest0-21swapper/320:10:593
285483099370,1cyclictest0-21swapper/320:10:593
2854826993734,2cyclictest0-21swapper/223:40:582
2854826993734,2cyclictest0-21swapper/223:22:592
2854826993734,2cyclictest0-21swapper/222:37:592
2854826993734,2cyclictest0-21swapper/221:56:592
2854826993734,2cyclictest0-21swapper/220:39:552
2854826993734,2cyclictest0-21swapper/219:33:582
2854826993734,2cyclictest0-21swapper/200:12:592
2854826993734,2cyclictest0-21swapper/200:12:582
285482699370,35cyclictest0-21swapper/222:04:592
2854821993729,6cyclictest2839684-21kworker/u8:3+flush-179:020:10:151
2854821993729,6cyclictest2839684-21kworker/u8:3+flush-179:020:10:141
2854820993732,4cyclictest2954129-21kworker/u8:2+events_unbound00:25:210
2854820993730,4cyclictest321-21hwrng20:53:000
2854830993634,1cyclictest0-21swapper/319:26:593
285483099360,35cyclictest0-21swapper/322:04:553
285483099360,35cyclictest0-21swapper/300:31:583
285483099360,1cyclictest0-21swapper/323:18:583
2854826993633,2cyclictest0-21swapper/220:05:592
285482699360,1cyclictest0-21swapper/223:35:002
285482699360,1cyclictest0-21swapper/221:22:592
2854830993533,1cyclictest0-21swapper/323:38:593
2854830993533,1cyclictest0-21swapper/320:20:593
285483099350,1cyclictest0-21swapper/323:22:003
2854826993533,1cyclictest0-21swapper/219:29:592
2854826993532,2cyclictest0-21swapper/221:35:592
2854826993532,2cyclictest0-21swapper/221:00:002
2854826993532,2cyclictest0-21swapper/220:45:592
2854830993432,1cyclictest0-21swapper/323:46:593
2854830993432,1cyclictest0-21swapper/320:29:593
2854830993431,2cyclictest0-21swapper/320:44:593
285483099340,27cyclictest0-21swapper/320:35:143
2854826993432,1cyclictest0-21swapper/222:16:592
2854826993431,2cyclictest0-21swapper/223:17:592
2854826993431,2cyclictest0-21swapper/221:15:592
2854826993431,2cyclictest0-21swapper/220:23:592
2854826993431,2cyclictest0-21swapper/220:02:582
4577091330,5ptp4l61490irq/134-eno1-TxRx-021:45:003
2854830993331,1cyclictest0-21swapper/321:52:593
2854830993331,1cyclictest0-21swapper/300:29:593
2854830993331,1cyclictest0-21swapper/300:01:583
2854820993330,2cyclictest2839684-21kworker/u8:3+flush-179:019:20:240
2854830993230,1cyclictest0-21swapper/321:20:593
2854830993230,1cyclictest0-21swapper/319:52:003
2854830993230,1cyclictest0-21swapper/300:19:553
2854826993229,2cyclictest0-21swapper/222:26:592
285482699320,2cyclictest0-21swapper/221:25:132
2854830993125,2cyclictest0-21swapper/300:10:173
2854830993125,2cyclictest0-21swapper/300:10:163
285483099310,29cyclictest0-21swapper/321:55:023
2854826993128,2cyclictest0-21swapper/223:55:592
2854826993128,2cyclictest0-21swapper/223:55:582
285482099310,3cyclictest0-21swapper/022:50:150
2854830993028,1cyclictest0-21swapper/322:24:593
2854830993028,1cyclictest0-21swapper/321:14:553
2854830993027,2cyclictest0-21swapper/323:40:123
2854830993026,1cyclictest0-21swapper/319:55:023
285483099300,1cyclictest0-21swapper/321:05:153
2854826993027,2cyclictest0-21swapper/220:14:002
2854826993027,2cyclictest0-21swapper/220:13:592
2854826993027,2cyclictest0-21swapper/219:58:002
2854826993027,2cyclictest0-21swapper/200:37:592
285482699300,2cyclictest0-21swapper/222:30:132
2854830992927,1cyclictest0-21swapper/320:06:003
285483099290,2cyclictest0-21swapper/321:45:123
285483099290,28cyclictest2902110-21turbostat21:35:003
285483099290,28cyclictest0-21swapper/300:05:143
2854826992927,1cyclictest0-21swapper/221:00:132
2854826992926,2cyclictest0-21swapper/221:40:122
285482699290,27cyclictest0-21swapper/222:45:022
285482699290,27cyclictest0-21swapper/219:35:142
2854820992925,3cyclictest2854853-21cat19:10:010
2854830992826,1cyclictest0-21swapper/323:25:593
2854830992826,1cyclictest0-21swapper/322:45:023
2854830992826,1cyclictest0-21swapper/320:00:023
2854830992826,1cyclictest0-21swapper/319:40:123
2854830992825,2cyclictest0-21swapper/319:45:133
2854830992822,5cyclictest2933134-21turbostat23:10:003
285483099280,27cyclictest0-21swapper/300:35:133
285483099280,26cyclictest0-21swapper/323:55:143
285483099280,26cyclictest0-21swapper/323:55:143
285483099280,26cyclictest0-21swapper/320:50:033
285483099280,26cyclictest0-21swapper/320:20:023
285483099280,26cyclictest0-21swapper/300:20:143
2854826992826,1cyclictest0-21swapper/200:30:122
2854826992826,1cyclictest0-21swapper/200:09:552
2854826992825,2cyclictest0-21swapper/223:51:002
2854826992825,2cyclictest0-21swapper/223:12:592
2854826992825,2cyclictest0-21swapper/222:06:592
285482699280,2cyclictest0-21swapper/220:31:592
285482699280,27cyclictest0-21swapper/220:20:012
285482699280,26cyclictest0-21swapper/223:05:122
285482699280,26cyclictest0-21swapper/221:50:142
285482699280,26cyclictest0-21swapper/219:10:122
285482699280,21cyclictest0-21swapper/223:45:142
4577091270,6ptp4l61490irq/134-eno1-TxRx-022:35:013
4577091270,4ptp4l441ktimers/323:00:013
4577091270,4ptp4l441ktimers/322:10:013
4577091270,4ptp4l441ktimers/319:15:023
2854830992725,1cyclictest0-21swapper/321:16:593
285483099270,1cyclictest0-21swapper/323:54:593
285483099270,1cyclictest0-21swapper/319:37:003
4577091260,4ptp4l441ktimers/321:29:553
4577091260,3ptp4l441ktimers/319:25:013
285483099260,1cyclictest0-21swapper/323:02:583
2854826992624,1cyclictest0-21swapper/222:59:592
2854826992623,2cyclictest0-21swapper/221:46:592
2854826992623,2cyclictest0-21swapper/220:41:002
2854826992623,2cyclictest0-21swapper/219:44:002
2854826992623,2cyclictest0-21swapper/219:24:002
285482699260,2cyclictest0-21swapper/223:36:592
285482699260,18cyclictest0-21swapper/221:32:592
2854821992622,3cyclictest2854931-21apt-key19:10:011
4577091250,4ptp4l61490irq/134-eno1-TxRx-019:34:563
4577091250,4ptp4l441ktimers/323:34:543
4577091250,4ptp4l441ktimers/322:19:563
4577091250,4ptp4l441ktimers/321:39:563
2854830992523,1cyclictest0-21swapper/321:03:583
2854826992523,1cyclictest0-21swapper/200:27:002
2854826992522,2cyclictest0-21swapper/223:03:592
2854826992522,2cyclictest0-21swapper/200:22:592
285482699250,2cyclictest0-21swapper/223:27:592
285482699250,2cyclictest0-21swapper/222:24:592
4577091240,4ptp4l441ktimers/320:49:553
2854830992421,2cyclictest2924926-21turbostat22:45:003
2854826992421,2cyclictest0-21swapper/221:12:002
4577091230,3ptp4l61490irq/134-eno1-TxRx-019:14:553
2854826992321,1cyclictest0-21swapper/221:09:592
2854826992219,2cyclictest0-21swapper/220:25:592
2854826992017,2cyclictest0-21swapper/219:18:582
2854826991816,1cyclictest0-21swapper/222:13:592
2854826991412,1cyclictest0-21swapper/200:05:002
2854826991210,1cyclictest0-21swapper/222:51:592
285482699107,2cyclictest351rcuc/219:52:062
28548269930,2cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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