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2026-05-24 - 05:44
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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
Characteristics of the 792 highest latencies:
System rackeslot2.osadl.org (updated Sun May 24, 2026 00:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
278934321020,1sleep10-21swapper/121:20:051
26970672980,2sleep1341rcuc/120:10:021
28296132820,2sleep30-21swapper/321:46:393
26564662460,2sleep11105059-1atop19:40:001
262195399319,13cyclictest16-21ksoftirqd/019:10:030
2621953993122,3cyclictest16-21ksoftirqd/022:40:020
2621953993018,7cyclictest3078227-21kthreadcore00:30:030
2621953992919,5cyclictest0-21swapper/000:09:560
2621953992721,2cyclictest17350irq/127-ahci[0000:00:17.0]20:50:000
2621953992719,7cyclictest3022985-21true23:55:010
2621953992717,5cyclictest16-21ksoftirqd/000:20:010
2621971992623,1cyclictest0-21swapper/220:50:012
2621958992622,3cyclictest3030332-21idleruntime-cro00:00:001
2621958992620,2cyclictest191rcu_preempt19:15:021
2621958992620,2cyclictest134050irq/121-eno100:30:031
2621958992614,3cyclictest1-21systemd19:25:021
2621953992616,3cyclictest16-21ksoftirqd/020:20:000
2621958992522,2cyclictest2675659-21if_eno119:55:001
2621958992522,2cyclictest2675659-21if_eno119:55:001
2621958992522,2cyclictest2669147-21apt-key19:50:001
2621958992515,5cyclictest36-21ksoftirqd/121:20:011
2621958992514,3cyclictest36-21ksoftirqd/121:10:011
2621953992516,2cyclictest191rcu_preempt19:45:030
2621953992515,6cyclictest0-21swapper/021:12:480
2621953992515,3cyclictest16-21ksoftirqd/020:55:020
2621953992514,7cyclictest2780905-21kthreadcore21:15:040
2621953992511,7cyclictest0-21swapper/023:59:550
2621958992421,2cyclictest2907684-21sh22:40:001
2621958992421,2cyclictest0-21swapper/119:45:011
2621958992418,2cyclictest134050irq/121-eno122:35:021
2621958992416,3cyclictest36-21ksoftirqd/100:10:021
2621958992410,3cyclictest0-21swapper/100:29:551
2621958992410,3cyclictest0-21swapper/100:29:551
2621953992421,2cyclictest2846687-21fschecks_time22:00:000
2621953992421,2cyclictest2623678-21kthreadcore19:10:030
2621953992420,3cyclictest16-21ksoftirqd/021:10:040
2621953992414,3cyclictest16-21ksoftirqd/023:45:020
2621953992414,3cyclictest16-21ksoftirqd/023:45:020
2621953992411,6cyclictest16-21ksoftirqd/019:30:010
2621953992411,6cyclictest16-21ksoftirqd/019:30:010
2621953992410,7cyclictest16-21ksoftirqd/020:30:020
2621953992410,7cyclictest16-21ksoftirqd/019:20:020
2621971992320,1cyclictest0-21swapper/221:10:032
2621958992317,1cyclictest191rcu_preempt19:55:021
2621958992317,1cyclictest191rcu_preempt00:25:001
2621958992315,3cyclictest36-21ksoftirqd/123:35:011
2621953992320,2cyclictest3827634-1atopacctd20:45:020
2621953992320,2cyclictest2713978-21grep20:25:010
2621953992315,3cyclictest16-21ksoftirqd/023:20:020
2621953992314,5cyclictest2914340-21/usr/sbin/munin22:45:120
2621971992219,1cyclictest0-21swapper/223:55:022
2621971992219,1cyclictest0-21swapper/221:05:002
2621958992219,2cyclictest2893100-21cat22:30:021
2621958992219,2cyclictest2651595-21kthreadcore19:35:021
2621958992213,2cyclictest0-21swapper/121:55:031
2621958992211,6cyclictest0-21swapper/123:20:011
262195399222,2cyclictest191rcu_preempt22:54:500
262195899215,6cyclictest36-21ksoftirqd/120:39:541
2621958992118,2cyclictest3091857-21irqrtprio00:40:001
2621958992118,2cyclictest2713702-21grep20:25:011
2621958992118,2cyclictest2707460-21irqcore20:20:021
2621958992118,2cyclictest2621941-21cyclictest20:50:021
2621958992112,2cyclictest1296-21polkitd21:00:021
2621958992111,3cyclictest2621941-21cyclictest23:39:261
2621958992110,6cyclictest0-21swapper/123:05:021
2621958992110,3cyclictest3851702-21mta-sts-daemon23:54:561
262195399216,7cyclictest16-21ksoftirqd/021:00:010
2621953992118,2cyclictest3046122-21irqcore00:10:020
2621953992118,2cyclictest2976980-21wc23:25:000
2621953992118,2cyclictest2675519-21latency_hist19:55:000
2621953992118,2cyclictest2675519-21latency_hist19:55:000
2621953992118,2cyclictest2669086-21gltestperf19:50:000
2621953992118,2cyclictest1290-21dbus-daemon21:45:000
2621953992118,2cyclictest0-21swapper/019:40:000
2621953992113,2cyclictest16-21ksoftirqd/019:25:000
2621953992111,4cyclictest2991537-21cstates23:34:570
2621953992111,2cyclictest3824567-21rs:main0
2621971992017,1cyclictest0-21swapper/221:45:062
262195899209,6cyclictest0-21swapper/122:18:481
262195899205,7cyclictest36-21ksoftirqd/122:05:081
2621958992017,2cyclictest2961520-21grep23:15:011
2621958992017,2cyclictest2954488-21irqstats23:10:011
2621958992017,2cyclictest2851572-21mailstats22:00:101
2621958992017,2cyclictest2832511-21systemd-run21:50:011
2621958992017,2cyclictest1105059-1atop21:40:011
2621958992012,3cyclictest0-21swapper/123:45:021
2621958992012,3cyclictest0-21swapper/123:45:021
2621958992011,1cyclictest191rcu_preempt23:24:291
262195399209,4cyclictest2874040-21phc2sys22:15:060
262195399208,4cyclictest191rcu_preempt23:45:050
2621953992017,2cyclictest3069022-21irqcore00:25:010
2621953992017,2cyclictest2816522-21if_err_enp1s021:40:000
2621953992017,2cyclictest2700998-21idleruntime20:15:010
2621953992017,2cyclictest2688547-21latency_hist20:05:000
2621953992015,4cyclictest3031975-21kthreadcore00:00:030
2621953992013,6cyclictest2889512-21sendmail_mailtr22:25:090
2621953992013,6cyclictest191rcu_preempt21:29:560
2621953992013,6cyclictest0-21swapper/021:24:030
2621953992012,7cyclictest3851705-21mta-sts-daemon22:59:470
2621953992012,3cyclictest16-21ksoftirqd/023:40:010
2649091190,2phc2sys0-21swapper/323:48:223
2621971991916,1cyclictest0-21swapper/223:35:012
2621971991916,1cyclictest0-21swapper/222:05:002
2621971991916,1cyclictest0-21swapper/219:20:002
262195899198,10cyclictest351ktimers/120:05:271
2621958991916,2cyclictest3056806-21kthreadcore00:15:061
2621958991916,2cyclictest2930413-21apt-config22:55:001
2621958991916,2cyclictest2839456-21irqcore21:55:011
2621958991916,2cyclictest2764422-21if_err_enp1s021:05:011
2621958991916,2cyclictest2738887-21head20:44:591
2621958991916,2cyclictest2633243-21kthreadcore19:20:021
2621958991916,2cyclictest1296-21polkitd23:30:011
2621958991916,2cyclictest0-21swapper/123:50:011
2621958991916,2cyclictest0-21swapper/120:05:011
262195399199,5cyclictest16-21ksoftirqd/019:35:010
262195399198,4cyclictest2725674-21tail20:34:550
262195399196,8cyclictest16-21ksoftirqd/022:35:020
2621953991916,2cyclictest2839672-21irqrtprio21:55:010
2621953991915,3cyclictest2832563-21kthreadcore21:50:010
2621953991912,3cyclictest2981904-21grep23:25:090
2621953991911,4cyclictest3076554-21sed00:30:010
2621953991911,4cyclictest3076554-21sed00:30:010
2621953991911,1cyclictest191rcu_preempt22:24:110
2621953991910,5cyclictest0-21swapper/023:07:210
262195399190,7cyclictest2731825-21/usr/sbin/munin20:40:010
28440192180,2sleep20-21swapper/221:55:082
2649091188,2phc2sys0-21swapper/320:49:563
2649091181,8phc2sys0-21swapper/320:59:543
2649091180,2phc2sys0-21swapper/322:35:473
2649091180,2phc2sys0-21swapper/322:01:533
2621971991816,1cyclictest0-21swapper/223:25:012
2621971991816,1cyclictest0-21swapper/221:40:012
2621971991816,1cyclictest0-21swapper/200:40:002
2621971991815,1cyclictest0-21swapper/222:20:002
2621971991815,1cyclictest0-21swapper/222:10:022
2621971991815,1cyclictest0-21swapper/221:20:012
262195899187,6cyclictest0-21swapper/122:45:131
2621958991815,2cyclictest3047363-21kthreadcore00:10:031
2621958991815,2cyclictest2938405-21apt-key23:00:011
2621958991815,2cyclictest2912773-21sh22:40:131
2621958991815,2cyclictest2864566-21kthreadcore22:10:031
2621958991815,2cyclictest2805536-21kthreadcore21:30:031
2621958991815,2cyclictest2801526-21sed21:30:001
2621958991815,2cyclictest2778346-21grep21:15:011
2621958991815,2cyclictest2720176-21apt-key20:30:001
2621958991815,2cyclictest2645144-21kthreadcore19:30:021
2621958991815,2cyclictest2645144-21kthreadcore19:30:021
2621958991815,2cyclictest0-21swapper/100:05:001
2621958991814,1cyclictest27269171systemd-run20:35:011
2621953991815,2cyclictest3827634-1atopacctd22:10:060
2621953991815,2cyclictest2764783-21irqrtprio21:05:030
2621953991815,2cyclictest2695366-21kthreadcore20:10:010
2621953991815,2cyclictest1290-21dbus-daemon23:00:090
262195399181,3cyclictest2961610-21munin-run23:15:010
2621953991810,1cyclictest191rcu_preempt22:08:040
2649091171,5phc2sys0-21swapper/319:14:553
2649091170,2phc2sys0-21swapper/323:09:583
2649091170,2phc2sys0-21swapper/300:09:023
2621971991715,1cyclictest0-21swapper/222:55:022
2621971991715,1cyclictest0-21swapper/222:30:012
2621971991715,1cyclictest0-21swapper/222:20:032
2621971991715,1cyclictest0-21swapper/220:10:012
2621971991714,1cyclictest0-21swapper/221:15:022
2621971991714,1cyclictest0-21swapper/219:35:012
2621971991714,1cyclictest0-21swapper/219:30:002
2621971991714,1cyclictest0-21swapper/219:30:002
2621971991714,1cyclictest0-21swapper/200:20:022
262195899176,3cyclictest36-21ksoftirqd/121:40:031
2621958991714,2cyclictest2879348-21kthreadcore22:20:041
2621958991714,2cyclictest2752982-21kthreadcore20:55:011
262195399177,9cyclictest0-21swapper/022:40:030
262195399176,3cyclictest16-21ksoftirqd/019:59:580
262195399175,1cyclictest191rcu_preempt00:36:060
262195399170,3cyclictest2851216-21latency22:00:060
28154942160,4sleep30-21swapper/321:39:553
2649091160,1phc2sys0-21swapper/323:32:553
2621971991614,1cyclictest0-21swapper/222:35:012
2621971991614,1cyclictest0-21swapper/221:00:012
2621971991614,1cyclictest0-21swapper/220:55:012
2621971991614,1cyclictest0-21swapper/220:30:022
2621971991614,1cyclictest0-21swapper/220:05:022
2621971991614,1cyclictest0-21swapper/220:00:012
2621971991614,1cyclictest0-21swapper/200:15:012
2621971991613,1cyclictest0-21swapper/223:44:582
2621971991613,1cyclictest0-21swapper/223:44:582
2621971991613,1cyclictest0-21swapper/223:19:572
2621971991613,1cyclictest0-21swapper/223:05:072
2621971991613,1cyclictest0-21swapper/221:31:492
2621971991613,1cyclictest0-21swapper/220:45:002
2621971991613,1cyclictest0-21swapper/219:55:002
2621971991613,1cyclictest0-21swapper/219:55:002
2621971991613,1cyclictest0-21swapper/219:40:022
2621971991613,1cyclictest0-21swapper/200:25:272
2621971991613,1cyclictest0-21swapper/200:25:272
2649091151,4phc2sys0-21swapper/321:54:563
2649091151,1phc2sys0-21swapper/319:50:303
2649091151,1phc2sys0-21swapper/319:50:303
2649091150,2phc2sys0-21swapper/321:28:213
2649091150,2phc2sys0-21swapper/300:17:033
2621971991513,1cyclictest0-21swapper/223:49:572
2621971991513,1cyclictest0-21swapper/220:35:012
2621971991513,1cyclictest0-21swapper/219:45:012
2621971991513,1cyclictest0-21swapper/219:25:022
2621971991513,1cyclictest0-21swapper/200:35:012
2621971991512,1cyclictest0-21swapper/223:55:572
2621971991512,1cyclictest0-21swapper/223:00:102
2621971991512,1cyclictest0-21swapper/222:47:312
2621971991512,1cyclictest0-21swapper/222:40:002
2621971991512,1cyclictest0-21swapper/221:25:132
2621971991512,1cyclictest0-21swapper/220:25:002
2621971991512,1cyclictest0-21swapper/219:50:002
2621971991512,1cyclictest0-21swapper/219:15:002
2621971991512,1cyclictest0-21swapper/200:10:012
262197199150,13cyclictest2700595-21chrt20:15:002
2649091142,2phc2sys0-21swapper/319:40:043
2649091140,5phc2sys0-21swapper/321:10:123
2649091140,3phc2sys0-21swapper/322:17:393
2649091140,2phc2sys0-21swapper/323:53:273
2649091140,2phc2sys0-21swapper/323:40:553
2649091140,2phc2sys0-21swapper/323:40:553
2649091140,2phc2sys0-21swapper/323:22:333
2649091140,2phc2sys0-21swapper/323:16:563
2649091140,2phc2sys0-21swapper/322:55:473
2649091140,2phc2sys0-21swapper/322:42:243
2649091140,2phc2sys0-21swapper/322:08:133
2649091140,2phc2sys0-21swapper/300:39:213
2621971991412,1cyclictest0-21swapper/223:00:012
2621971991412,1cyclictest0-21swapper/222:15:002
2621971991411,2cyclictest0-21swapper/221:23:232
2621971991411,1cyclictest0-21swapper/222:40:032
262195899145,3cyclictest36-21ksoftirqd/119:10:011
2649091130,3phc2sys0-21swapper/300:29:563
2649091130,3phc2sys0-21swapper/300:29:553
2649091130,2phc2sys0-21swapper/322:12:193
2649091130,2phc2sys0-21swapper/321:16:353
2649091130,2phc2sys0-21swapper/321:06:243
2649091130,2phc2sys0-21swapper/319:45:053
2649091130,2phc2sys0-21swapper/319:29:553
2649091130,2phc2sys0-21swapper/319:29:553
2649091130,2phc2sys0-21swapper/300:12:073
2649091130,2phc2sys0-21swapper/300:00:253
2649091130,1phc2sys0-21swapper/322:31:423
2649091130,1phc2sys0-21swapper/300:23:423
2621971991311,1cyclictest0-21swapper/223:27:052
2621971991311,1cyclictest0-21swapper/221:50:072
2621971991311,1cyclictest0-21swapper/220:35:032
2621971991311,1cyclictest0-21swapper/219:10:012
2621971991311,1cyclictest0-21swapper/200:20:102
2621971991311,1cyclictest0-21swapper/200:05:022
2621971991310,1cyclictest0-21swapper/223:40:012
2621971991310,1cyclictest0-21swapper/220:15:062
2649091121,2phc2sys0-21swapper/319:55:023
2649091120,4phc2sys0-21swapper/322:49:543
2649091120,3phc2sys0-21swapper/300:34:573
2649091120,2phc2sys0-21swapper/323:56:083
2649091120,2phc2sys0-21swapper/323:25:593
2649091120,2phc2sys0-21swapper/323:12:353
2649091120,2phc2sys0-21swapper/321:43:563
2649091120,2phc2sys0-21swapper/321:30:463
2649091120,2phc2sys0-21swapper/320:36:483
2649091120,2phc2sys0-21swapper/320:33:103
2649091120,2phc2sys0-21swapper/320:18:523
2649091120,1phc2sys0-21swapper/323:03:053
2649091120,1phc2sys0-21swapper/322:53:383
2649091120,1phc2sys0-21swapper/320:50:263
2649091120,1phc2sys0-21swapper/320:02:123
2649091120,1phc2sys0-21swapper/319:36:353
2621971991210,1cyclictest0-21swapper/223:10:022
2621971991210,1cyclictest0-21swapper/221:40:102
27633742111,3sleep30-21swapper/321:04:563
2649091110,2phc2sys0-21swapper/322:29:313
2649091110,2phc2sys0-21swapper/319:19:553
27168402100,3sleep30-21swapper/320:25:043
2649091102,2phc2sys0-21swapper/321:56:113
2649091100,3phc2sys0-21swapper/319:25:023
2649091100,2phc2sys0-21swapper/323:35:053
2649091100,2phc2sys0-21swapper/321:22:523
2649091100,2phc2sys0-21swapper/320:09:543
2649091100,2phc2sys0-21swapper/319:34:553
264909191,2phc2sys0-21swapper/320:40:083
264909191,2phc2sys0-21swapper/320:20:043
264909191,2phc2sys0-21swapper/319:05:053
264909190,2phc2sys0-21swapper/322:20:043
264909190,2phc2sys0-21swapper/320:11:383
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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