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2026-08-07 - 14:51
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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 376 highest latencies:
System rackeslot2.osadl.org (updated Fri Aug 07, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
325915521060,2sleep20-21swapper/221:35:452
3068103992522,2cyclictest268-21systemd-journal22:45:011
3240591240,5phc2sys0-21swapper/300:10:183
3068102992312,6cyclictest0-21swapper/022:10:420
3068104992219,1cyclictest0-21swapper/223:55:002
3068104992219,1cyclictest0-21swapper/219:45:012
3068103992218,3cyclictest70-21kcompactd023:35:021
3068102992219,2cyclictest3461463-21latency_hist23:55:000
3068102992212,5cyclictest0-21swapper/000:20:010
306810499212,9cyclictest0-21swapper/222:50:202
3068103992118,2cyclictest3461533-21apt-key23:55:001
3068103992113,3cyclictest3441405-21kthreadcore23:40:411
3068102992118,2cyclictest3328044-21apt-get22:25:010
3068102992110,6cyclictest0-21swapper/022:40:020
3068103992017,2cyclictest664-21dbus-daemon21:50:011
3068103992017,2cyclictest3258044-21kthreadcore21:35:421
3068103992011,7cyclictest0-21swapper/119:30:011
306810299209,6cyclictest0-21swapper/023:45:010
3068102992017,2cyclictest664-21dbus-daemon21:00:020
3068102992017,2cyclictest3119385-21apt19:50:190
3068102992011,8cyclictest0-21swapper/021:20:230
3068102992011,5cyclictest3395382-21apt23:10:180
3068102992010,6cyclictest0-21swapper/023:20:410
3068102992010,6cyclictest0-21swapper/022:25:400
306810499194,6cyclictest0-21swapper/223:20:202
306810499191,8cyclictest0-21swapper/219:50:022
3068104991916,1cyclictest0-21swapper/222:39:102
3068104991916,1cyclictest0-21swapper/222:25:012
3068103991916,2cyclictest664-21dbus-daemon19:45:011
3068103991910,4cyclictest0-21swapper/120:00:011
306810299199,6cyclictest0-21swapper/023:30:370
306810299199,5cyclictest0-21swapper/022:55:470
306810499182,4cyclictest0-21swapper/223:10:022
3068104991815,1cyclictest0-21swapper/223:05:012
3068104991815,1cyclictest0-21swapper/219:35:022
3068104991814,1cyclictest0-21swapper/223:50:002
306810399185,2cyclictest191rcu_preempt21:10:181
3068103991815,2cyclictest268-21systemd-journal21:25:011
3068103991811,6cyclictest3347011-21kthreadcore22:35:421
3068103991810,3cyclictest3324956-21kthreadcore22:20:421
3068103991810,3cyclictest0-21swapper/123:10:181
306810299188,2cyclictest0-21swapper/022:45:410
3068102991815,2cyclictest3464273-21kthreadcore23:55:410
3068102991815,2cyclictest3320339-21turbostat22:20:000
3068102991815,2cyclictest3320339-21turbostat22:20:000
3068102991815,2cyclictest3094516-21ls19:30:010
3068102991812,5cyclictest3501733-21kthreadcore00:20:420
3240591171,4phc2sys0-21swapper/321:10:183
3240591170,2phc2sys0-21swapper/321:53:523
306810499172,7cyclictest0-21swapper/223:30:172
306810499171,8cyclictest0-21swapper/223:40:022
3068104991715,1cyclictest0-21swapper/223:29:292
3068104991715,1cyclictest0-21swapper/219:15:022
3068104991714,1cyclictest0-21swapper/200:25:412
3068104991713,2cyclictest3197942-21turbostat20:55:002
3068104991713,2cyclictest0-21swapper/219:40:022
3068103991715,1cyclictest1034-21runrttasks22:18:001
3068103991715,1cyclictest1034-21runrttasks22:18:001
3068103991714,2cyclictest672-21polkitd00:00:011
3068103991714,2cyclictest664-21dbus-daemon22:55:011
3068103991714,2cyclictest3469590-21apt-get00:00:181
3068103991714,2cyclictest3417700-21aten2.4-expect23:25:251
3068103991713,3cyclictest3447795-21df23:45:361
3068103991710,3cyclictest3491753-21/usr/sbin/munin00:15:481
306810299179,7cyclictest3418358-21gltestperf23:25:370
306810299177,6cyclictest0-21swapper/021:35:360
3068102991715,1cyclictest0-21swapper/000:05:010
3068102991714,2cyclictest3253722-21/usr/sbin/munin21:35:010
3068102991714,2cyclictest3244727-21timerwakeupswit21:25:480
3068102991714,2cyclictest3224892-21entropy21:15:360
3068102991714,2cyclictest3197919-21sh20:55:000
3068102991714,2cyclictest3077767-21cut19:15:400
3068102991714,2cyclictest1306-21mta-sts-daemon00:15:020
3068102991714,2cyclictest1-21systemd00:40:020
3068102991710,6cyclictest0-21swapper/021:40:390
3068102991710,2cyclictest3356172-21ssh22:40:490
34510412160,6sleep00-21swapper/023:45:410
3240591161,4phc2sys0-21swapper/321:19:013
3240591160,3phc2sys0-21swapper/322:49:393
3240591160,3phc2sys0-21swapper/322:21:253
3240591160,2phc2sys0-21swapper/322:19:043
3240591160,2phc2sys0-21swapper/322:19:043
306810499161,7cyclictest0-21swapper/220:30:022
306810499161,5cyclictest0-21swapper/221:10:022
3068104991613,1cyclictest0-21swapper/222:45:022
3068104991613,1cyclictest0-21swapper/222:20:012
3068104991613,1cyclictest0-21swapper/222:20:012
3068104991613,1cyclictest0-21swapper/222:05:472
3068104991613,1cyclictest0-21swapper/221:20:012
3068104991613,1cyclictest0-21swapper/220:30:412
3068104991613,1cyclictest0-21swapper/200:15:422
3068104991612,2cyclictest0-21swapper/221:10:152
3068104991612,2cyclictest0-21swapper/220:05:272
306810399169,3cyclictest0-21swapper/123:10:011
306810399168,3cyclictest0-21swapper/100:06:511
3068103991613,2cyclictest3244501-21mailstats21:25:461
3068103991613,2cyclictest3225195-21if_enp1s0.821:15:381
3068103991611,2cyclictest1309-21mta-sts-daemon22:29:261
306810299167,5cyclictest3511232-21kthreadcore00:25:440
306810299164,6cyclictest0-21swapper/000:05:190
3068102991614,1cyclictest1309-21mta-sts-daemon21:54:410
3068102991614,1cyclictest1306-21mta-sts-daemon22:09:340
3068102991613,2cyclictest3409757-21cron23:20:010
3068102991612,3cyclictest3305688-21kworker/u16:1+nfsiod22:54:210
3068102991612,3cyclictest1309-21mta-sts-daemon19:10:440
3068102991610,5cyclictest0-21swapper/023:36:510
3240591150,3phc2sys0-21swapper/322:30:193
3240591150,2phc2sys0-21swapper/323:03:533
3240591150,1phc2sys0-21swapper/321:41:213
306810499151,7cyclictest0-21swapper/221:55:192
306810499151,6cyclictest0-21swapper/223:00:022
3068104991512,1cyclictest0-21swapper/222:10:422
3068104991512,1cyclictest0-21swapper/221:53:332
3068104991512,1cyclictest0-21swapper/221:26:152
3068104991512,1cyclictest0-21swapper/221:01:042
3068104991512,1cyclictest0-21swapper/219:25:422
3068104991512,1cyclictest0-21swapper/200:40:012
3068104991512,1cyclictest0-21swapper/200:05:472
3068104991512,1cyclictest0-21swapper/200:00:022
3068104991511,2cyclictest0-21swapper/220:35:392
3068104991511,2cyclictest0-21swapper/220:35:392
3068103991512,2cyclictest664-21dbus-daemon19:35:011
3068103991512,2cyclictest3251965-21xargs21:30:481
3068103991512,2cyclictest3119187-21sh19:50:021
3068103991512,2cyclictest1309-21mta-sts-daemon19:15:331
3068103991512,2cyclictest1306-21mta-sts-daemon20:45:021
3068103991512,2cyclictest11574-21rtkit-daemon20:16:071
3068103991512,2cyclictest0-21swapper/123:05:011
3068103991512,2cyclictest0-21swapper/122:55:361
3068103991512,2cyclictest0-21swapper/122:35:011
3068103991512,2cyclictest0-21swapper/121:00:011
3068103991511,3cyclictest3363106-21missed_timers22:45:441
3068103991511,3cyclictest3336033-21kworker/u16:2+nfsiod23:17:301
3068103991511,3cyclictest3320711-21kworker/u16:0+nfsiod00:27:541
3068103991511,3cyclictest3188791-21kthreadcore20:45:411
306810299159,2cyclictest3173696-21turbostat20:35:010
3068102991512,2cyclictest688-21in:imuxsock21:56:510
3068102991512,2cyclictest3291306-21aten_repower_en22:00:210
3068102991512,2cyclictest3209508-21proc_pri21:00:450
3068102991512,2cyclictest3141550-21kthreadcore20:05:420
1157598150,7rtkit-daemon1300-21mta-sts-daemon22:33:260
3240591141,3phc2sys0-21swapper/321:48:313
3240591140,4phc2sys0-21swapper/323:20:113
3240591140,3phc2sys0-21swapper/322:05:183
3240591140,2phc2sys0-21swapper/323:17:163
3240591140,2phc2sys0-21swapper/300:35:043
3240591140,2phc2sys0-21swapper/300:30:433
3240591140,2phc2sys0-21swapper/300:24:083
3240591140,2phc2sys0-21swapper/300:05:313
3068104991412,1cyclictest0-21swapper/223:40:462
3068104991412,1cyclictest0-21swapper/221:30:412
3068104991412,1cyclictest0-21swapper/220:55:402
3068104991412,1cyclictest0-21swapper/200:05:012
3068104991411,2cyclictest0-21swapper/222:45:452
3068104991411,1cyclictest0-21swapper/223:15:402
3068104991411,1cyclictest0-21swapper/222:25:412
3068104991411,1cyclictest0-21swapper/221:45:422
3068104991411,1cyclictest0-21swapper/221:40:432
3068104991411,1cyclictest0-21swapper/220:20:412
3068104991411,1cyclictest0-21swapper/220:15:412
3068104991411,1cyclictest0-21swapper/200:30:192
3068104991411,1cyclictest0-21swapper/200:20:422
3068104991411,1cyclictest0-21swapper/200:10:282
306810399148,4cyclictest69250irq/121-eno100:11:571
306810399148,2cyclictest69250irq/121-eno121:10:011
306810399148,2cyclictest3308915-21kthreadcore22:10:421
306810399148,2cyclictest3264395-21kthreadcore21:40:431
306810399148,2cyclictest3068101-21cyclictest00:35:421
306810399145,4cyclictest3173332-21sshd20:30:491
3068103991411,2cyclictest3517022-21kthreadcore00:30:441
3068103991411,2cyclictest3291904-21fschecks_count22:00:361
3068103991411,2cyclictest3278298-21kthreadcore21:50:421
3068103991411,2cyclictest3156756-21sort20:20:391
3068103991411,2cyclictest3082884-21tail19:20:331
3068103991411,2cyclictest1306-21mta-sts-daemon22:05:381
3068103991411,2cyclictest1306-21mta-sts-daemon21:59:251
3068103991411,2cyclictest11574-21rtkit-daemon20:54:371
3068103991411,1cyclictest0-21swapper/119:15:011
3068103991410,3cyclictest3147322-21kthreadcore20:10:441
3068103991410,3cyclictest3103702-21kthreadcore19:35:421
306810299147,2cyclictest3387607-21turbostat23:05:010
306810299145,5cyclictest0-21swapper/020:43:050
3068102991411,2cyclictest684-21systemd-logind20:50:020
3068102991411,2cyclictest3518784-21missed_timers00:30:450
3068102991411,2cyclictest3214113-21kthreadcore21:05:410
3068102991411,2cyclictest3178825-21phc2sys20:35:460
3068102991411,2cyclictest3178825-21phc2sys20:35:460
3068102991411,2cyclictest3136480-21ptp4l-jitter20:00:460
3068102991411,2cyclictest3126183-21gltestperf19:55:390
3068102991411,2cyclictest3106952-21/usr/sbin/munin19:40:360
3068102991411,2cyclictest3105622-21missed_timers19:35:430
3068102991411,2cyclictest1306-21mta-sts-daemon21:49:550
3068102991410,3cyclictest1300-21mta-sts-daemon21:10:040
3068102991410,2cyclictest688-21in:imuxsock20:30:020
3240591130,3phc2sys0-21swapper/323:41:063
3240591130,2phc2sys0-21swapper/323:27:503
3240591130,2phc2sys0-21swapper/322:53:313
3240591130,1phc2sys0-21swapper/323:57:483
3240591130,1phc2sys0-21swapper/322:12:193
306810499132,7cyclictest0-21swapper/223:10:182
306810499131,3cyclictest0-21swapper/219:10:012
3068104991311,1cyclictest0-21swapper/222:00:032
3068104991311,1cyclictest0-21swapper/221:20:462
3068104991310,2cyclictest0-21swapper/219:15:382
3068104991310,1cyclictest0-21swapper/220:40:392
3068104991310,1cyclictest0-21swapper/220:00:392
3068104991310,1cyclictest0-21swapper/219:55:472
3068104991310,1cyclictest0-21swapper/219:50:392
3068104991310,1cyclictest0-21swapper/219:20:412
306810399139,3cyclictest3133067-21kthreadcore20:00:421
306810399139,3cyclictest1300-21mta-sts-daemon20:25:351
306810399138,1cyclictest1157598rtkit-daemon23:20:321
306810399137,4cyclictest3119386-21apt-get19:50:191
3068103991310,2cyclictest3437372-21pmu-power23:35:431
3068103991310,2cyclictest3208634-21kthreadcore21:00:421
3068103991310,2cyclictest3177239-21kthreadcore20:35:441
3068103991310,2cyclictest3177239-21kthreadcore20:35:441
3068103991310,2cyclictest3140198-21kthreadcore20:05:421
3068103991310,2cyclictest1307-21mta-sts-daemon00:20:201
306810399130,8cyclictest664-21dbus-daemon19:10:011
3068102991310,2cyclictest3389062-21irqcore23:05:400
3068102991310,2cyclictest3157106-21kthreadcore20:20:400
3068102991310,2cyclictest3151029-21kthreadcore20:15:400
3068102991310,2cyclictest3147782-21kthreadcore20:10:450
3068102991310,2cyclictest3113593-21cpuspeed_turbos19:45:350
3068102991310,2cyclictest3083763-21irqcore19:20:400
3240591121,5phc2sys0-21swapper/323:10:183
3240591121,2phc2sys0-21swapper/323:05:523
3240591120,2phc2sys0-21swapper/320:40:173
3240591120,2phc2sys0-21swapper/320:00:533
3240591120,2phc2sys0-21swapper/320:00:023
3240591120,2phc2sys0-21swapper/319:41:183
3240591120,1phc2sys0-21swapper/323:34:563
3240591120,1phc2sys0-21swapper/322:26:583
3240591120,1phc2sys0-21swapper/321:36:403
3240591120,1phc2sys0-21swapper/320:08:473
306810499129,1cyclictest0-21swapper/220:45:412
3068104991210,1cyclictest0-21swapper/222:30:112
306810299129,2cyclictest3097648-21kthreadcore19:30:410
306810299129,2cyclictest0-21swapper/019:10:020
3240591113,2phc2sys0-21swapper/320:29:273
3240591112,2phc2sys0-21swapper/322:00:373
3240591112,2phc2sys0-21swapper/319:20:393
3240591111,2phc2sys0-21swapper/300:02:013
3240591110,3phc2sys0-21swapper/321:55:193
3240591110,3phc2sys0-21swapper/321:33:083
3240591110,3phc2sys0-21swapper/319:45:393
3240591110,2phc2sys0-21swapper/321:03:203
3240591110,1phc2sys0-21swapper/321:22:513
306810499118,1cyclictest0-21swapper/220:10:432
3240591101,3phc2sys0-21swapper/319:10:013
3240591101,2phc2sys0-21swapper/323:50:433
3240591101,2phc2sys0-21swapper/323:46:543
3240591101,2phc2sys0-21swapper/323:38:163
3240591101,2phc2sys0-21swapper/322:40:373
3240591101,2phc2sys0-21swapper/321:25:453
3240591101,2phc2sys0-21swapper/320:47:063
3240591101,2phc2sys0-21swapper/320:15:413
3240591100,2phc2sys0-21swapper/322:56:283
3240591100,2phc2sys0-21swapper/320:30:193
3240591100,2phc2sys0-21swapper/319:50:363
3240591100,2phc2sys0-21swapper/319:30:373
3240591100,2phc2sys0-21swapper/319:10:493
3240591100,2phc2sys0-21swapper/300:26:103
3240591100,1phc2sys0-21swapper/320:37:323
3240591100,1phc2sys0-21swapper/320:37:323
324059191,2phc2sys0-21swapper/322:36:043
324059191,1phc2sys0-21swapper/321:05:453
324059190,4phc2sys0-21swapper/319:35:193
324059190,3phc2sys0-21swapper/320:55:353
324059190,2phc2sys0-21swapper/320:50:353
324059190,2phc2sys0-21swapper/320:20:373
324059190,2phc2sys0-21swapper/319:25:483
324059190,2phc2sys0-21swapper/319:15:143
324059190,1phc2sys0-21swapper/300:15:043
324059180,2phc2sys0-21swapper/320:10:403
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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