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2026-09-13 - 09:11
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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 rackeslot1.osadl.org (updated Sun Sep 13, 2026 00:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2327998211759,20sleep00-21swapper/019:09:500
2328033211658,21sleep20-21swapper/219:09:522
2327831211558,22sleep30-21swapper/319:08:573
2328111210153,14sleep10-21swapper/119:09:591
24953242340,2sleep20-21swapper/221:15:052
25150902300,1sleep2401ktimers/221:25:032
26946522220,1sleep30-21swapper/323:11:263
26280692220,1chrt211rcuc/022:33:170
2328481992118,2cyclictest1631-21gsd-color00:29:013
2328480992017,2cyclictest2714475-21ps23:25:022
25487282180,2sleep2391rcuc/221:45:052
2328481991815,2cyclictest2561836-21irqcore21:55:023
2328481991814,3cyclictest2380717-21cpuspeed_turbos19:50:003
2328481991814,3cyclictest2329393-21kthreadcore19:10:043
2328480991814,3cyclictest1491-21llvmpipe-223:50:592
2328478991814,3cyclictest2608999-21needreboot22:20:050
2328481991714,2cyclictest2622457-21systemd-run22:30:033
2328481991714,2cyclictest2622457-21systemd-run22:30:033
2328481991714,2cyclictest1631-21gsd-color22:40:013
2328481991714,2cyclictest1474-21gnome-shell21:18:103
2328480991714,2cyclictest771-21dbus-daemon22:20:032
2328480991711,5cyclictest1487-21JS14:15:322
2328479991715,1cyclictest2806228-21apt-get00:19:411
2328479991714,2cyclictest2407338-21irqcore20:10:021
2328479991713,3cyclictest783-21polkitd20:00:021
2328479991713,3cyclictest2744590-21pmu-power23:40:071
2328478991714,2cyclictest1487-21JS14:15:320
2328478991713,3cyclictest950-21in:imuxsock22:45:030
2328478991711,2cyclictest191rcu_preempt20:00:030
26376862160,1chrt0-21swapper/122:39:591
2328481991613,2cyclictest2815845-21irqrtprio00:25:023
2328481991612,3cyclictest2679966-21latency_hist23:05:033
2328480991613,2cyclictest769-21avahi-daemon20:45:022
2328480991613,2cyclictest769-21avahi-daemon20:45:022
2328480991613,2cyclictest0-21swapper/220:31:002
2328480991612,3cyclictest2680674-21kthreadcore23:05:022
232848099160,1cyclictest0-21swapper/223:31:512
2328479991613,2cyclictest790-21systemd-logind21:50:011
2328479991613,2cyclictest2459338-21unin-run20:50:011
2328479991613,2cyclictest2434058-21sed20:30:021
2328479991612,3cyclictest2346892-21systemctl19:20:121
2328478991613,2cyclictest2769845-21phc2sys23:55:090
2328478991613,2cyclictest2420075-21fschecks_count20:20:000
2328478991613,2cyclictest1042-21gdbus21:45:030
2328478991612,3cyclictest950-21in:imuxsock21:40:020
2328478991612,3cyclictest769-21avahi-daemon22:50:020
2328478991612,3cyclictest2499122-21pmu-power21:15:090
27194562150,2chrt2719461-21unixbench_singl23:25:103
232848199158,6cyclictest1487-21JS14:15:323
2328481991512,2cyclictest2806194-21/usr/sbin/munin00:20:033
2328481991512,2cyclictest2696115-21/usr/sbin/munin23:15:083
2328481991512,2cyclictest2629274-21cron22:35:013
2328481991512,2cyclictest2578211-21cpuspeed_turbos22:04:583
2328481991512,2cyclictest2348405-21systemd-run19:25:033
2328481991512,2cyclictest2328476-21cyclictest23:25:033
2328481991512,2cyclictest1042-21gdbus00:10:033
2328481991511,3cyclictest2782001-21irqcore00:05:013
2328481991511,3cyclictest2544481-21cpuspeed_turbos21:44:593
2328481991511,3cyclictest2511386-21kthreadcore21:25:023
2328481991511,3cyclictest2493647-21cpuspeed_turbos21:15:003
2328481991511,3cyclictest2484482-21unixbench_singl21:05:103
2328481991511,3cyclictest2470989-21pmu-power20:55:123
2328481991511,3cyclictest2448630-21kthreadcore20:40:013
2328481991511,3cyclictest2423957-21kthreadcore20:20:063
2328481991511,3cyclictest2400383-21fschecks_count20:05:013
2328481991511,3cyclictest2372824-21needreboot19:40:063
232848199150,15cyclictest63-21kcompactd022:22:413
2328480991511,3cyclictest2707223-21kthreadcore23:20:022
2328480991511,3cyclictest2537556-21kthreadcore21:40:022
2328480991511,3cyclictest2514319-21kthreadcore21:25:032
232848099150,15cyclictest0-21swapper/223:08:352
232847999155,4cyclictest2483458-21tr21:05:061
2328479991512,2cyclictest2740599-21systemd-run23:40:021
2328479991512,2cyclictest2731625-21kernelversion23:35:031
2328479991512,2cyclictest2478682-21cpuspeed_turbos21:05:001
2328479991512,2cyclictest2328476-21cyclictest21:55:041
2328479991512,2cyclictest2328476-21cyclictest00:10:161
2328479991512,2cyclictest1042-21gdbus21:35:011
2328479991511,3cyclictest2816080-21kernelversion00:25:031
2328479991511,3cyclictest2629064-21cpu22:35:001
2328479991511,3cyclictest2558113-21needreboot21:50:061
2328478991512,2cyclictest783-21polkitd23:25:010
2328478991512,2cyclictest2457920-21tr20:45:090
2328478991512,2cyclictest1042-21gdbus19:35:030
2328478991511,3cyclictest2812136-21pmu-power00:20:090
2328478991511,3cyclictest2623113-21kthreadcore22:30:030
2328478991511,3cyclictest2623113-21kthreadcore22:30:030
2328478991511,3cyclictest2592166-21pmu-power22:10:090
2328478991511,3cyclictest2431866-21pmu-power20:25:080
2328478991511,3cyclictest1474-21gnome-shell23:17:090
28319492140,1sleep3481rcuc/300:30:253
232848199149,4cyclictest2790346-21fschecks_time00:10:053
2328481991411,2cyclictest771-21dbus-daemon20:35:023
2328481991411,2cyclictest491ktimers/300:40:013
2328481991411,2cyclictest2731442-21irqrtprio23:35:023
2328481991410,3cyclictest2406851-21cpuspeed_turbos20:09:593
2328481991410,3cyclictest2357771-21kthreadcore19:30:053
2328480991411,2cyclictest2756254-21systemd23:50:022
2328480991411,2cyclictest2747118-21/usr/sbin/munin23:45:022
2328480991411,2cyclictest2433522-21sort20:30:022
2328480991410,3cyclictest2815914-21irqrtprio00:25:022
2328480991410,3cyclictest2693473-21needreboot23:10:082
2328480991410,3cyclictest2425765-21unixbench_multi20:20:122
2328480991410,3cyclictest2413620-21cut20:15:012
2328480991410,3cyclictest2400308-21cpuspeed_turbos20:04:582
2328480991410,3cyclictest2334904-21cpuspeed_turbos19:14:592
232848099140,4cyclictest2569960-21grep22:00:002
232847999149,4cyclictest2595306-21cut22:15:011
232847999149,4cyclictest1487-21JS14:15:321
232847999148,5cyclictest2512356-21kthreadcore21:25:021
2328479991411,2cyclictest950-21in:imuxsock19:40:011
2328479991411,2cyclictest790-21systemd-logind20:15:031
2328479991411,2cyclictest2646317-21unin-run22:45:021
2328479991411,2cyclictest2578615-21systemd-run22:05:011
2328479991411,2cyclictest2401046-21unin-run20:05:031
2328479991411,2cyclictest2359696-21needreboot19:30:061
2328479991410,3cyclictest2702001-21phc2sys-jitter23:15:081
2328479991410,3cyclictest2328476-21cyclictest22:20:031
2328479991410,3cyclictest1487-21JS14:15:321
2328478991411,2cyclictest950-21in:imuxsock20:35:020
2328478991411,2cyclictest2580480-21kthreadcore22:05:030
2328478991411,2cyclictest2328890-21idleruntime19:10:030
2328478991410,3cyclictest2802886-21kthreadcore00:15:070
2328478991410,3cyclictest2753054-21pmu-power23:45:080
2328478991410,3cyclictest2736459-21unixbench-2d23:35:100
2328478991410,3cyclictest2690829-21kthreadcore23:10:060
2328478991410,3cyclictest2671241-21cpuspeed_turbos22:59:590
2328478991410,3cyclictest2562322-21kthreadcore21:55:030
232848199139,3cyclictest2736508-21unixbench_multi23:35:103
232848199139,3cyclictest2453245-21irqcore20:45:043
232848199139,3cyclictest1491-21llvmpipe-222:20:003
232848199139,3cyclictest1474-21gnome-shell19:57:103
232848199138,1cyclictest191rcu_preempt23:40:053
232848199136,1cyclictest25825211kthreadcore22:05:033
232848199136,1cyclictest191rcu_preempt00:00:013
232848199132,6cyclictest2485376-21diskmemload21:32:493
232848199132,1cyclictest191rcu_preempt19:50:083
2328481991311,1cyclictest491ktimers/322:54:193
2328481991310,2cyclictest790-21systemd-logind20:55:023
2328481991310,2cyclictest5180-21gmain23:50:073
2328481991310,2cyclictest491ktimers/320:25:063
2328481991310,2cyclictest1489-21llvmpipe-022:58:003
2328481991310,2cyclictest1042-21gdbus19:30:033
232848099139,3cyclictest2617423-21needreboot22:25:062
232848099139,3cyclictest2617423-21needreboot22:25:062
232848099139,3cyclictest1489-21llvmpipe-021:06:002
232848099137,5cyclictest379-21systemd-journal20:49:542
232848099134,4cyclictest191rcu_preempt23:40:012
2328480991310,2cyclictest783-21polkitd19:25:022
2328480991310,2cyclictest771-21dbus-daemon23:00:022
2328480991310,2cyclictest2654821-21cpuspeed_turbos22:50:052
2328480991310,2cyclictest2640500-21grep22:40:042
2328480991310,2cyclictest1485-21JS14:15:322
2328480991310,2cyclictest1042-21gdbus00:10:022
232848099130,1cyclictest0-21swapper/223:59:432
232848099130,13cyclictest0-21swapper/219:44:152
232847999139,3cyclictest2754753-21sshd-auth23:47:541
232847999139,3cyclictest2723733-21kthreadcore23:30:021
232847999139,3cyclictest2502936-21irqcore21:20:031
232847999139,3cyclictest2386531-21unixbench_singl19:50:111
232847999139,3cyclictest2341629-21cpuspeed_turbos19:20:021
232847999139,3cyclictest1487-21JS14:15:321
232847999139,3cyclictest0-21swapper/119:45:011
232847999137,5cyclictest771-21dbus-daemon23:00:021
232847999137,2cyclictest0-21swapper/122:09:421
232847999136,2cyclictest2834498-21gltestperf00:35:011
232847999131,11cyclictest80750irq/123-eno120:19:441
2328479991310,2cyclictest2839522-21needreboot00:35:071
2328479991310,2cyclictest2426836-21systemd-run20:25:021
2328479991310,2cyclictest0-21swapper/123:25:011
232847999130,2cyclictest2472263-21dump-pmu-power21:00:001
232847899139,3cyclictest2835187-21irqrtprio00:35:030
232847899139,3cyclictest2764480-21cpuspeed_turbos23:55:000
232847899139,3cyclictest2552825-21cpuspeed_turbos21:49:580
232847899139,3cyclictest2465649-21cpuspeed_turbos20:55:000
232847899139,3cyclictest2407453-21irqcore20:10:020
232847899138,4cyclictest0-21swapper/021:35:010
232847899137,5cyclictest2471769-21sshd-session20:58:540
232847899137,5cyclictest0-21swapper/022:10:030
232847899134,3cyclictest191rcu_preempt22:40:030
2328478991311,1cyclictest2660387-21head22:50:160
2328478991310,2cyclictest2679705-21cpuspeed_turbos23:04:590
2328478991310,2cyclictest2413949-21systemd-run20:15:030
232848199129,2cyclictest2646879-21sed22:45:043
232848199129,2cyclictest2646544-21systemd-run22:45:023
232848199129,2cyclictest2365779-21kthreadcore19:35:023
232848199127,1cyclictest191rcu_preempt20:15:053
232848199123,6cyclictest1036-21gmain23:09:503
2328481991210,1cyclictest2748697-21kthreadcore23:45:043
2328481991210,1cyclictest2547960-21kthreadcore21:45:053
2328481991210,1cyclictest2528637-21kthreadcore21:35:053
232848199120,4cyclictest2569368-21sh21:59:463
232848099129,2cyclictest2798213-21sh00:15:012
232848099129,2cyclictest2654400-21systemd-run22:50:022
232848099129,2cyclictest2535480-21/usr/sbin/munin21:40:052
232848099129,2cyclictest0-21swapper/221:15:022
232848099129,2cyclictest0-21swapper/200:40:012
232848099129,2cyclictest0-21swapper/200:05:022
232848099128,3cyclictest2464430-21pmu-power20:50:082
232848099128,3cyclictest2420193-21fschecks_time20:20:022
232848099126,5cyclictest771-21dbus-daemon00:20:012
232848099126,5cyclictest2367902-21basename19:40:002
232848099125,2cyclictest2354710-21hddtemp_smartct19:30:012
232847999129,2cyclictest2328239-21kworker/u8:3-ext4-rsv-conversion19:30:021
232847999128,3cyclictest2617445-21grep22:25:061
232847999128,3cyclictest2617445-21grep22:25:051
232847999128,3cyclictest0-21swapper/100:00:011
232847999126,5cyclictest2776812-21tr00:00:051
232847999126,5cyclictest2544711-21smartctl21:45:011
232847999124,6cyclictest1042-21gdbus21:10:091
232847999123,2cyclictest26946532ssh23:11:261
2328479991210,1cyclictest790-21systemd-logind21:40:021
2328479991210,1cyclictest2680834-21/usr/sbin/munin23:05:031
232847899129,2cyclictest2756567-21kworker/u8:3+xprtiod00:02:000
232847899129,2cyclictest2688638-21systemd-run23:10:030
232847899129,2cyclictest2519326-21cpuspeed21:30:030
232847899129,2cyclictest2452953-21latency_hist20:45:020
232847899129,2cyclictest2452953-21latency_hist20:45:020
232847899129,2cyclictest2448802-21kthreadcore20:40:020
232847899129,2cyclictest1489-21llvmpipe-019:53:590
232847899129,2cyclictest0-21swapper/000:40:010
232847899128,2cyclictest0-21swapper/022:00:020
232847899127,4cyclictest2748096-21pluginstate23:45:010
232847899126,5cyclictest379-21systemd-journal19:20:030
232847899126,5cyclictest1-21systemd00:15:030
232847899125,6cyclictest2354748-21cut19:30:010
232847899125,5cyclictest1042-21gdbus19:20:020
232847899121,11cyclictest0-21swapper/021:24:400
2328478991210,1cyclictest2485468-21fschecks_time21:10:010
136198120,3rtkit-daemon784-21mta-sts-daemon19:47:230
136198120,3rtkit-daemon1480-21gmain22:18:021
232848199118,2cyclictest20850irq/125-ahci[0000:00:17.0]19:20:033
232848199117,3cyclictest2590703-21kthreadcore22:10:073
232848199115,5cyclictest1-21systemd21:05:023
232848199111,6cyclictest0-21swapper/320:10:033
232848099118,2cyclictest1491-21llvmpipe-221:05:002
232848099117,3cyclictest2574844-21kthreadcore22:00:052
232848099116,4cyclictest771-21dbus-daemon22:10:012
232848099116,4cyclictest2393738-21cpuspeed_turbos19:59:572
232848099115,5cyclictest379-21systemd-journal19:19:542
232848099115,5cyclictest2824022-21tr00:29:002
232848099115,5cyclictest2607228-21cut22:20:042
232848099115,5cyclictest2406616-21cut20:09:492
232848099115,5cyclictest2361692-21sed19:35:012
232848099114,5cyclictest2833784-21rm00:34:382
232847999119,1cyclictest2657558-21kthreadcore22:50:091
232847999118,2cyclictest80750irq/123-eno100:26:371
232847999115,5cyclictest2682252-21cut23:05:041
232847999115,5cyclictest2437061-21cut20:30:051
232847999113,3cyclictest0-21swapper/121:28:151
232847999111,9cyclictest2443846-21cut20:35:101
232847999110,6cyclictest2786569-21memory00:05:061
232847999110,3cyclictest0-21swapper/119:10:131
232847899118,2cyclictest769-21avahi-daemon21:00:100
232847899118,2cyclictest0-21swapper/023:35:020
232847899117,3cyclictest2398949-21needreboot20:00:040
232847899117,2cyclictest0-21swapper/020:20:120
232847899115,5cyclictest2820013-21cut00:25:050
232847899115,5cyclictest2718496-21tr23:25:040
232847899115,5cyclictest2366243-21cat19:35:040
232847899110,2cyclictest0-21swapper/019:44:440
232848199105,4cyclictest2452335-21cut20:44:473
232848199105,4cyclictest2452335-21cut20:44:463
232848099108,1cyclictest2589933-21kthreadcore22:10:062
232848099107,2cyclictest0-21swapper/220:40:012
232848099105,4cyclictest2633264-21cut22:35:062
232848099105,4cyclictest2554612-21cut21:50:032
232848099104,5cyclictest2628936-21cut22:34:532
232848099104,5cyclictest2467354-21cut20:55:032
232848099104,5cyclictest2386336-21cat19:50:112
232848099100,9cyclictest2527252-21cut21:34:492
232847999107,2cyclictest80750irq/123-eno119:45:051
232847999107,2cyclictest2451330-21open_files20:40:051
232847999107,2cyclictest2451330-21open_files20:40:051
232847899105,4cyclictest2597327-21cut22:15:040
232847899104,5cyclictest2783643-21cut00:05:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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