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2025-12-23 - 00:41
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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 highest latencies:
System rackbslot1.osadl.org (updated Mon Dec 22, 2025 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32120472203175,18sleep30-21swapper/307:07:363
32118532189161,18sleep20-21swapper/207:05:422
32122042177153,14sleep10-21swapper/107:09:351
32120992173150,14sleep00-21swapper/007:08:140
3212436997167,3cyclictest3492083-21kworker/u8:3+events_unbound11:50:113
3212427996752,14cyclictest3249778-13chrome07:45:020
3212427996258,3cyclictest3150626-21kworker/u8:1+flush-179:007:31:490
3212427996158,2cyclictest3227821-21kworker/u8:3+flush-179:009:05:020
3212428995956,2cyclictest3227821-21kworker/u8:3+events_unbound08:25:331
3212428995953,4cyclictest3497727-21chrome11:45:021
3212427995955,2cyclictest3150626-21kworker/u8:1+flush-179:007:10:070
3212436995854,3cyclictest3249294-21kworker/u8:2+events_unbound07:55:313
3212436995853,2cyclictest3414088-21kworker/u8:4+flush-179:011:05:293
3212436995853,2cyclictest3414088-21kworker/u8:4+flush-179:011:05:293
3212436995848,3cyclictest3486831-21kworker/u8:0+flush-179:012:10:293
3212431995852,4cyclictest3347259-21kworker/u8:2+flush-179:010:05:142
3212436995754,2cyclictest3227821-21kworker/u8:3+flush-179:009:17:023
3212436995754,2cyclictest3227821-21kworker/u8:3+events_unbound07:40:293
3212436995753,3cyclictest3227821-21kworker/u8:3+flush-179:008:50:103
3212436995653,2cyclictest3347259-21kworker/u8:2+events_unbound09:45:173
3212436995652,3cyclictest3360273-21kworker/u8:1+events_unbound10:08:183
3212436995652,3cyclictest3347259-21kworker/u8:2+events_unbound10:20:013
3212436995643,10cyclictest3227821-21kworker/u8:3+flush-179:007:30:263
3212428995549,4cyclictest3326885-21/usr/share/muni09:00:201
3212427995548,6cyclictest3476557-21latency_hist11:25:010
3212431995450,3cyclictest3228675-21munin-update07:25:342
3212431995439,14cyclictest3249821-21chrome07:45:022
3212436995350,2cyclictest3472106-21kworker/u8:3+flush-179:011:30:293
3212431995346,5cyclictest3316671-21/usr/share/muni08:50:142
3212427995350,2cyclictest3347259-21kworker/u8:2+flush-179:009:35:150
3212427995349,3cyclictest3360273-21kworker/u8:1+flush-179:009:40:100
3212427995348,3cyclictest3434683-21kworker/u8:2+flush-179:011:10:340
321242799533,50cyclictest3434683-21kworker/u8:2+efi_rts_wq11:29:400
3212436995249,2cyclictest3227821-21kworker/u8:3+flush-179:009:30:233
3212428995249,3cyclictest3383301-21kworker/u8:3+events_unbound09:55:331
3212427995247,4cyclictest3403254-31munin-html10:10:360
3212436995147,3cyclictest3486932-21kworker/u8:1+events_unbound11:44:443
3212436995147,3cyclictest3275000-21kworker/u8:4+flush-179:008:17:033
3212436995145,2cyclictest3492083-21kworker/u8:3+events_unbound11:45:343
3212431995146,4cyclictest3434996-21latency_hist10:45:012
3212431995145,4cyclictest3311418-21/usr/share/muni08:45:212
3212427995147,3cyclictest3414088-21kworker/u8:4+events_unbound11:00:350
3212427995145,4cyclictest3383461-21latency_hist09:55:010
3212436995047,2cyclictest3321251-21kworker/u8:0+flush-179:009:06:563
3212436995047,2cyclictest3275000-21kworker/u8:4+flush-179:008:20:183
3212431995046,3cyclictest3486831-21kworker/u8:0+flush-179:011:50:372
3212431995046,2cyclictest3274513-31munin-html08:05:352
3212431995044,5cyclictest3517598-21kworker/u8:4+flush-179:012:20:142
3212427995043,5cyclictest3357985-21/usr/share/muni09:30:100
3212436994946,2cyclictest3486831-21kworker/u8:0+events_unbound11:35:133
3212436994944,2cyclictest3227821-21kworker/u8:3+events_unbound08:49:123
3212436994941,7cyclictest3227821-21kworker/u8:3+flush-179:009:20:143
3212428994945,3cyclictest3513232-21/usr/share/muni12:00:141
3212428994943,4cyclictest3451200-21/usr/share/muni11:00:111
3212427994946,2cyclictest3201719-21kworker/u8:0+flush-179:007:20:300
3212427994945,3cyclictest3517598-21kworker/u8:4+events_unbound12:10:100
3212427994945,3cyclictest3492083-21kworker/u8:3+flush-179:011:45:120
3212427994945,3cyclictest3383301-21kworker/u8:3+flush-179:010:05:240
3212427994944,4cyclictest3227821-21kworker/u8:3+flush-179:008:20:310
3212436994846,2cyclictest3414088-21kworker/u8:4+events_unbound11:15:333
3212436994845,2cyclictest3414088-21kworker/u8:4+events_unbound10:25:143
3212436994845,2cyclictest3414088-21kworker/u8:4+events_unbound10:25:143
3212436994845,2cyclictest3360273-21kworker/u8:1+flush-179:010:10:333
3212427994842,4cyclictest3357509-21kworker/u8:0+flush-179:009:55:100
3212436994742,3cyclictest3360273-21kworker/u8:1+events_unbound10:17:033
3212431994743,3cyclictest3227821-21kworker/u8:3+flush-179:009:10:052
3212431994741,5cyclictest247560-21ThreadPoolForeg10:20:392
3212431994740,6cyclictest247516-21Chrome_ChildIOT10:25:192
3212431994740,6cyclictest247516-21Chrome_ChildIOT10:25:192
3212431994740,5cyclictest76405-21systemd-journal09:05:002
3212428994745,2cyclictest3243973-21kworker/u8:0+flush-179:007:39:161
3212427994741,5cyclictest3227821-21kworker/u8:3+flush-179:008:30:100
3212436994643,2cyclictest3472106-21kworker/u8:3+flush-179:011:25:243
3212436994643,2cyclictest3383301-21kworker/u8:3+events_unbound10:04:003
3212436994643,2cyclictest3383301-21kworker/u8:3+events_unbound10:04:003
3212436994643,2cyclictest3360273-21kworker/u8:1+flush-179:009:50:093
3212436994643,2cyclictest3360273-21kworker/u8:1+events_unbound09:40:313
3212436994643,2cyclictest3227821-21kworker/u8:3+flush-179:008:25:213
3212436994641,4cyclictest3230587-21ntpq07:25:153
3212436994639,2cyclictest3347259-21kworker/u8:2+flush-179:009:25:223
3212436994636,9cyclictest3310917-21kworker/u8:1+flush-179:009:10:143
3212431994639,5cyclictest3388832-21/usr/share/muni10:00:152
3212431994639,5cyclictest3388832-21/usr/share/muni10:00:152
3212428994644,2cyclictest3531026-21kworker/u8:2+events_unbound12:33:111
3212428994642,3cyclictest3227821-21kworker/u8:3+flush-179:008:20:291
3212428994641,4cyclictest3461388-21/usr/share/muni11:10:071
3212427994643,2cyclictest3150626-21kworker/u8:1+flush-179:007:40:100
3212427994642,3cyclictest3445544-21kworker/u8:0+flush-179:010:55:350
3212427994642,3cyclictest3285048-21kworker/u8:2+flush-179:008:35:300
3212427994641,4cyclictest3520653-21kworker/u8:1+flush-179:012:33:430
3212427994640,4cyclictest3227821-21kworker/u8:3+flush-179:008:00:170
3212436994540,3cyclictest3215340-21kworker/u8:4+flush-179:007:20:213
3212431994532,12cyclictest3522672-21kworker/2:2+pm12:32:102
321242799450,44cyclictest3125724-21ThreadPoolForeg11:50:100
3212436994442,2cyclictest3227821-21kworker/u8:3+events_unbound08:11:593
3212436994441,2cyclictest3517598-21kworker/u8:4+events_unbound12:29:173
3212436994441,2cyclictest3486831-21kworker/u8:0+events_unbound12:01:323
3212436994441,2cyclictest3445544-21kworker/u8:0+events_unbound11:00:293
3212436994441,2cyclictest3347259-21kworker/u8:2+events_unbound09:35:523
3212436994440,3cyclictest3517598-21kworker/u8:4+flush-179:012:15:243
3212436994440,3cyclictest3517598-21kworker/u8:4+flush-179:012:15:233
3212436994440,3cyclictest3227821-21kworker/u8:3+flush-179:007:52:423
3212436994440,3cyclictest3227821-21kworker/u8:3+events_unbound07:35:293
3212436994439,4cyclictest3512592-31munin-graph11:55:543
3212436994431,2cyclictest3227821-21kworker/u8:3+flush-179:008:00:343
3212431994441,2cyclictest3337128-21kworker/2:2+pm09:40:062
3212431994440,2cyclictest3450990-21kworker/2:0+pm11:01:552
3212431994437,5cyclictest3497714-21/usr/share/muni11:45:182
3212431994436,6cyclictest3483575-21apt-get11:30:132
3212431994412,31cyclictest3435295-21chrome10:45:012
3212428994441,2cyclictest3472106-21kworker/u8:3+flush-179:011:26:511
3212427994440,3cyclictest3310917-21kworker/u8:1+flush-179:009:04:490
3212427994436,5cyclictest3260101-21/usr/share/muni07:55:220
3212436994340,2cyclictest3383301-21kworker/u8:3+events_unbound10:36:403
3212436994339,3cyclictest3201719-21kworker/u8:0+flush-179:007:17:423
3212436994328,14cyclictest3125721-21chrome10:50:113
3212431994340,2cyclictest3261582-21kworker/2:0+pm07:55:572
3212431994340,2cyclictest3171210-21kworker/2:3+pm07:36:492
3212431994338,4cyclictest3223553-21latency_hist07:20:012
3212431994337,4cyclictest3383285-21kworker/2:1+pm10:18:192
3212428994341,2cyclictest3360273-21kworker/u8:1+flush-179:009:48:181
3212428994340,2cyclictest3310917-21kworker/u8:1+events_unbound09:05:281
3212428994339,3cyclictest3508113-21/usr/share/muni11:55:021
3212427994340,3cyclictest3275000-21kworker/u8:4+flush-179:008:18:050
3212427994338,4cyclictest76405-21systemd-journal08:45:000
3212427994338,4cyclictest3434683-21kworker/u8:2+flush-179:011:08:200
3212427994338,4cyclictest3434683-21kworker/u8:2+flush-179:011:08:200
3212427994337,4cyclictest3310917-21kworker/u8:1+flush-179:008:55:000
3212427994331,1cyclictest1913133-1kworker/0:2H+kblockd10:25:120
3212427994331,1cyclictest1913133-1kworker/0:2H+kblockd10:25:110
3212436994239,2cyclictest3517598-21kworker/u8:4+events_unbound12:07:043
3212436994239,2cyclictest3429606-21kworker/u8:1+flush-179:011:20:303
3212436994237,4cyclictest3125687-21ThreadPoolForeg08:06:003
3212436994235,3cyclictest3300455-21kworker/u8:5+events_unbound08:44:203
3212436994228,4cyclictest247516-21Chrome_ChildIOT09:00:043
3212431994238,3cyclictest3227821-21kworker/u8:3+flush-179:008:25:202
3212431994237,3cyclictest3450990-21kworker/2:0+pm11:16:122
3212428994239,2cyclictest3360273-21kworker/u8:1+events_unbound09:40:531
3212428994239,2cyclictest3249294-21kworker/u8:2+flush-179:007:55:381
3212428994237,4cyclictest3310917-21kworker/u8:1+flush-179:008:52:501
3212427994239,2cyclictest3357509-21kworker/u8:0+flush-179:009:45:130
3212427994238,3cyclictest3517598-21kworker/u8:4+flush-179:012:20:540
3212427994238,3cyclictest3201719-21kworker/u8:0+flush-179:007:15:200
3212436994139,2cyclictest3150626-21kworker/u8:1+flush-179:007:46:163
3212436994138,3cyclictest3536178-21kworker/u8:0+flush-179:012:30:053
3212436994138,2cyclictest3383301-21kworker/u8:3+flush-179:010:32:303
3212436994137,3cyclictest3536178-21kworker/u8:0+flush-179:012:37:133
3212436994136,4cyclictest3445544-21kworker/u8:0+flush-179:010:55:343
3212436994133,2cyclictest3310917-21kworker/u8:1+events_unbound08:55:113
3212431994138,2cyclictest3383285-21kworker/2:1+pm10:35:162
3212431994137,3cyclictest3477453-21kworker/2:2+pm12:03:072
3212431994137,2cyclictest3450990-21kworker/2:0+pm11:10:152
3212431994137,2cyclictest3337128-21kworker/2:2+pm09:30:192
3212431994134,6cyclictest3403501-31munin-html10:10:492
3212431994131,8cyclictest3349065-21ntpq09:20:152
3212431994113,26cyclictest247563-13Compositor09:38:112
3212428994139,2cyclictest3414088-21kworker/u8:4+events_unbound11:21:161
3212428994139,2cyclictest3150626-21kworker/u8:1+flush-179:007:25:241
3212428994139,1cyclictest3414407-21/usr/share/muni10:25:011
3212428994139,1cyclictest3414407-21/usr/share/muni10:25:011
3212428994138,2cyclictest3227821-21kworker/u8:3+flush-179:008:04:431
3212428994136,4cyclictest247560-21ThreadPoolForeg11:52:391
3212428994128,12cyclictest3227821-21kworker/u8:3+flush-179:008:08:561
3212427994139,1cyclictest1260-21snmpd11:19:500
3212427994137,3cyclictest3150626-21kworker/u8:1+flush-179:007:35:120
3212427994137,3cyclictest3150626-21kworker/u8:1+events_unbound08:12:310
3212427994136,4cyclictest3518328-21/usr/share/muni12:05:030
3212427994134,5cyclictest3513225-21/usr/share/muni12:00:050
3212427994134,5cyclictest3445464-31munin-html10:50:560
3212436994037,2cyclictest3357509-21kworker/u8:0+events_unbound10:40:173
3212436994035,3cyclictest3213898-21diskstats07:10:163
3212431994037,2cyclictest3337128-21kworker/2:2+pm09:26:072
3212431994037,2cyclictest3337128-21kworker/2:2+pm09:16:182
3212431994037,2cyclictest3261582-21kworker/2:0+pm08:34:092
3212431994036,3cyclictest3450990-21kworker/2:0+pm11:20:012
3212431994035,4cyclictest3360273-21kworker/u8:1+flush-179:009:50:142
3212431994034,4cyclictest3450688-21kworker/u8:3+flush-179:011:00:002
3212431994031,7cyclictest247561-21ThreadPoolForeg12:10:152
3212428994038,2cyclictest3486831-21kworker/u8:0+events_unbound12:16:491
3212428994038,2cyclictest3486831-21kworker/u8:0+events_unbound12:16:491
3212428994038,2cyclictest3243973-21kworker/u8:0+events_unbound07:45:261
3212428994038,2cyclictest3227821-21kworker/u8:3+events_unbound09:10:201
3212428994037,3cyclictest3486932-21kworker/u8:1+flush-179:011:32:291
3212428994037,3cyclictest3347259-21kworker/u8:2+flush-179:009:52:001
3212428994037,2cyclictest3249294-21kworker/u8:2+flush-179:007:50:261
3212428994036,3cyclictest3517598-21kworker/u8:4+events_unbound12:14:101
3212428994031,8cyclictest3456453-21snmp_wanswitch.11:05:051
3212428994031,8cyclictest3456453-21snmp_wanswitch.11:05:051
321242799408,31cyclictest99883-21in:imklog07:50:100
3212427994036,3cyclictest3548111-21apt-get12:35:150
3212427994036,3cyclictest3429606-21kworker/u8:1+events_unbound10:50:020
3212427994036,3cyclictest3357509-21kworker/u8:0+flush-179:010:30:110
321242799400,39cyclictest3125721-21chrome09:26:210
3212436993936,2cyclictest3520653-21kworker/u8:1+events_unbound12:21:453
3212431993937,1cyclictest3522672-21kworker/2:2+pm12:26:502
3212431993937,1cyclictest3310771-21kworker/2:1+pm09:05:342
3212431993937,1cyclictest3171210-21kworker/2:3+pm07:23:132
3212431993936,2cyclictest3518468-21kworker/2:1+pm12:05:352
3212431993936,2cyclictest3477453-21kworker/2:2+pm11:56:302
3212431993936,2cyclictest3450990-21kworker/2:0+pm11:26:522
3212431993936,2cyclictest3450990-21kworker/2:0+pm11:07:432
3212431993936,2cyclictest3450990-21kworker/2:0+pm11:07:432
3212431993936,2cyclictest3383285-21kworker/2:1+pm10:51:592
3212431993936,2cyclictest3383285-21kworker/2:1+pm10:33:362
3212431993936,2cyclictest3383285-21kworker/2:1+pm09:57:482
3212431993936,2cyclictest3261582-21kworker/2:0+pm08:43:212
3212431993936,2cyclictest3261582-21kworker/2:0+pm08:15:022
3212431993936,2cyclictest3261582-21kworker/2:0+pm08:00:242
3212431993936,2cyclictest3171210-21kworker/2:3+pm07:12:042
3212431993935,3cyclictest3477453-21kworker/2:2+pm11:40:052
3212431993934,3cyclictest3261582-21kworker/2:0+pm08:10:152
3212428993937,2cyclictest3536178-21kworker/u8:0+events_unbound12:26:341
3212428993937,2cyclictest3429606-21kworker/u8:1+flush-179:010:44:101
3212428993936,3cyclictest3193323-21kworker/u8:2+events_unbound07:32:461
3212428993935,3cyclictest3291035-21kworker/u8:0+events_unbound08:37:081
3212428993934,2cyclictest3291035-21kworker/u8:0+events_unbound08:40:061
3212428993933,5cyclictest247516-21Chrome_ChildIOT09:15:341
321242799395,32cyclictest3125684-21Chrome_DevTools12:27:570
3212427993936,2cyclictest3486831-21kworker/u8:0+flush-179:011:56:190
3212427993936,2cyclictest3310917-21kworker/u8:1+events_unbound08:55:350
3212427993935,3cyclictest3150626-21kworker/u8:1+flush-179:007:25:220
3212427993934,3cyclictest3360273-21kworker/u8:1+flush-179:010:16:030
3212427993929,3cyclictest3310917-21kworker/u8:1+events_unbound09:10:220
3212436993835,2cyclictest3414088-21kworker/u8:4+flush-179:010:49:143
3212436993834,3cyclictest3227821-21kworker/u8:3+events_unbound08:32:123
3212431993836,2cyclictest3522672-21kworker/2:2+pm12:35:052
3212431993835,2cyclictest3310771-21kworker/2:1+pm08:55:172
3212431993835,2cyclictest3171210-21kworker/2:3+pm07:53:092
3212431993835,2cyclictest3171210-21kworker/2:3+pm07:40:542
3212431993834,3cyclictest3261582-21kworker/2:0+pm08:20:172
3212431993834,2cyclictest3337128-21kworker/2:2+pm09:45:132
3212431993834,2cyclictest3171210-21kworker/2:3+pm07:33:432
3212431993833,4cyclictest3517598-21kworker/u8:4+flush-179:012:18:252
3212431993833,4cyclictest3517598-21kworker/u8:4+flush-179:012:18:242
3212431993833,3cyclictest1861814-1kworker/2:0H+kblockd08:35:052
3212428993836,2cyclictest3227821-21kworker/u8:3+events_unbound09:32:291
3212428993835,3cyclictest3357509-21kworker/u8:0+flush-179:010:36:521
3212428993835,2cyclictest3419315-21kworker/1:1+pm11:44:451
3212428993833,3cyclictest3531026-21kworker/u8:2+events_unbound12:36:441
3212427993835,2cyclictest3434683-21kworker/u8:2+flush-179:011:33:220
3212427993834,3cyclictest3517598-21kworker/u8:4+events_unbound12:15:400
3212427993834,3cyclictest3517598-21kworker/u8:4+events_unbound12:15:400
3212427993831,5cyclictest3409342-21snmp_wlanswitch10:20:010
3212436993735,2cyclictest3227821-21kworker/u8:3+flush-179:008:38:523
3212436993734,2cyclictest3434683-21kworker/u8:2+events_unbound11:10:233
3212431993732,3cyclictest3125627-21ChromeDriver00:55:192
3212428993734,3cyclictest3517598-21kworker/u8:4+events_unbound12:09:111
3212428993734,2cyclictest247562-13Chrome_ChildIOT09:25:261
3212428993733,3cyclictest3125724-21ThreadPoolForeg07:12:451
3212427993734,2cyclictest1913133-1kworker/0:2H+kblockd11:42:430
3212427993734,2cyclictest1913133-1kworker/0:2H+kblockd10:00:150
3212427993734,2cyclictest1913133-1kworker/0:2H+kblockd10:00:150
3212427993733,3cyclictest3357509-21kworker/u8:0+flush-179:010:40:330
3212427993733,3cyclictest3227821-21kworker/u8:3+flush-179:009:15:320
3212427993732,4cyclictest3300455-21kworker/u8:5+flush-179:009:22:380
3212436993632,3cyclictest3357509-21kworker/u8:0+events_unbound09:58:573
3212428993633,3cyclictest3357509-21kworker/u8:0+events_unbound10:03:561
3212428993633,3cyclictest3357509-21kworker/u8:0+events_unbound10:03:561
3212428993633,2cyclictest3436944-1kworker/1:2H+kblockd11:00:011
3212428993633,2cyclictest3321251-21kworker/u8:0+events_unbound08:58:331
3212428993633,1cyclictest3290504-1kworker/1:1H+kblockd10:15:041
3212428993632,3cyclictest3520653-21kworker/u8:1+events_unbound12:22:501
3212428993632,3cyclictest3383301-21kworker/u8:3+flush-179:010:12:381
3212428993632,3cyclictest3227821-21kworker/u8:3+events_unbound07:24:241
3212428993630,5cyclictest247516-21Chrome_ChildIOT10:30:241
3212428993630,4cyclictest247515-21ThreadPoolForeg10:08:541
3212428993630,2cyclictest3310917-21kworker/u8:1+flush-179:008:47:411
321242799360,35cyclictest247561-21ThreadPoolForeg11:35:250
3212428993532,2cyclictest3436944-1kworker/1:2H+kblockd10:50:221
3212428993532,2cyclictest247563-13Compositor07:15:111
3212428993531,3cyclictest3429606-21kworker/u8:1+flush-179:011:15:071
3212428993531,3cyclictest3275000-21kworker/u8:4+events_unbound08:15:161
3212428993531,3cyclictest3227821-21kworker/u8:3+events_unbound07:41:261
3212428993530,4cyclictest247516-21Chrome_ChildIOT08:10:341
3212428993521,13cyclictest3125721-21chrome10:21:451
3212427993531,3cyclictest3150626-21kworker/u8:1+flush-179:008:25:050
3212427993432,1cyclictest1913133-1kworker/0:2H+kblockd08:05:480
3212427993430,3cyclictest3300455-21kworker/u8:5+events_unbound08:45:120
3212428993331,1cyclictest3436944-1kworker/1:2H+kblockd11:38:531
3212428993330,2cyclictest3125627-21ChromeDriver00:55:191
3212428993230,1cyclictest3435385-21chrome10:45:141
3212428993230,1cyclictest3290504-1kworker/1:1H+kblockd08:33:551
321242799321,30cyclictest3427801-21memory10:35:220
3212428993028,1cyclictest1260-21snmpd09:23:251
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