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2025-12-20 - 23:45
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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 Sat Dec 20, 2025 12:44:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2120412216192,14sleep30-21swapper/307:06:453
2122872207184,13sleep00-21swapper/007:09:510
2122372198173,14sleep10-21swapper/107:09:111
2120222189165,14sleep20-21swapper/207:06:322
212486991100,107cyclictest250062-21chrome07:45:033
212478996459,3cyclictest499131-21snmp_areswitch.11:45:021
212481996359,3cyclictest326910-31munin-html08:55:362
212481996359,3cyclictest323453-21kworker/u8:2+flush-179:009:35:002
212478996257,4cyclictest498762-21latency_hist11:45:001
212486995913,44cyclictest247557-21chrome08:45:013
5043662560,1chrt504358-21snmp_areswitch.11:50:013
212478995551,3cyclictest217109-21kworker/u8:0+flush-179:007:40:181
212472995550,3cyclictest529242-21munin-limits12:10:330
212481995448,4cyclictest488775-21/usr/share/muni11:35:162
212481995350,2cyclictest323453-21kworker/u8:2+flush-179:009:05:102
212481995247,4cyclictest301602-21kworker/u8:5+flush-179:008:35:162
212472995249,2cyclictest323453-21kworker/u8:2+flush-179:009:10:360
212472995248,3cyclictest323453-21kworker/u8:2+flush-179:009:04:060
212472995248,3cyclictest323453-21kworker/u8:2+flush-179:009:04:050
212481995147,3cyclictest508998-21kworker/u8:0+events_unbound12:20:002
212481995146,4cyclictest473093-21/usr/share/muni11:20:172
212481995126,4cyclictest383299-21kworker/u8:0+flush-179:010:05:302
212478995146,3cyclictest452185-21/usr/share/muni11:00:201
212481995046,3cyclictest488215-21kworker/u8:1+flush-179:012:00:272
212481995045,4cyclictest415757-21kworker/u8:3+flush-179:010:30:292
212481995045,4cyclictest247515-21ThreadPoolForeg08:10:342
212472995046,3cyclictest420874-21kworker/u8:0+flush-179:010:35:530
212486994944,4cyclictest247515-21ThreadPoolForeg09:20:343
212481994945,3cyclictest400443-21kworker/u8:1+flush-179:010:20:362
212481994936,2cyclictest250100-21snmp_areswitch.07:45:032
212478994945,3cyclictest223277-21kworker/u8:4+flush-179:008:31:231
212478994944,3cyclictest354934-21kworker/u8:0+flush-179:009:41:371
21247899490,2cyclictest385621-21snmp_wlanpowerc09:55:031
212486994843,3cyclictest534741-31munin-graph12:16:133
212481994844,3cyclictest446490-21kworker/u8:0+flush-179:011:45:202
212481994844,3cyclictest446490-21kworker/u8:0+events_unbound11:05:002
212481994844,3cyclictest337850-21kworker/u8:5+flush-179:009:35:252
212481994841,4cyclictest405938-21/usr/share/muni10:15:022
212472994843,4cyclictest247515-21ThreadPoolForeg10:50:340
212486994743,3cyclictest281781-1kworker/3:0H+kblockd12:25:573
212486994741,4cyclictest483444-21latency_hist11:30:023
212486994737,6cyclictest228498-21kworker/3:1+pm07:54:553
212486994732,13cyclictest281781-1kworker/3:0H+kblockd10:10:133
212481994743,3cyclictest400443-21kworker/u8:1+flush-179:010:25:202
212481994743,3cyclictest400443-21kworker/u8:1+flush-179:010:25:202
212481994741,5cyclictest160654-21kworker/u8:1+flush-179:007:15:122
212478994743,3cyclictest301602-21kworker/u8:5+flush-179:008:35:321
212478994741,4cyclictest410427-31munin-graph10:15:511
3216152460,1chrt321613-21ntpq08:50:300
212486994630,15cyclictest247562-13Chrome_ChildIOT09:57:483
212481994643,2cyclictest3890990-1kworker/2:1H+kblockd09:20:152
212481994643,2cyclictest359237-21kworker/2:0+pm12:36:092
212481994642,3cyclictest301587-21kworker/u8:2+events_unbound08:40:192
212481994641,4cyclictest464310-21diskstats11:10:182
212481994641,4cyclictest464310-21diskstats11:10:172
212478994641,4cyclictest517449-21kworker/u8:2+flush-179:012:15:361
212478994640,5cyclictest462262-21cp11:10:011
212472994642,3cyclictest337850-21kworker/u8:5+flush-179:009:55:150
212472994641,3cyclictest488215-21kworker/u8:1+flush-179:011:59:160
212472994641,3cyclictest488215-21kworker/u8:1+flush-179:011:59:160
212472994639,6cyclictest492994-31munin-html11:35:360
212481994540,3cyclictest354934-21kworker/u8:0+flush-179:009:25:232
212481994540,3cyclictest244219-21kworker/u8:3+flush-179:008:50:272
212481994539,4cyclictest400443-21kworker/u8:1+flush-179:010:40:132
212481994538,3cyclictest323453-21kworker/u8:2+flush-179:010:00:192
212481994536,6cyclictest247516-21Chrome_ChildIOT09:55:392
212478994541,3cyclictest223277-21kworker/u8:4+flush-179:008:25:281
212478994540,4cyclictest483691-21/usr/share/muni11:30:031
212478994538,5cyclictest3125724-21ThreadPoolForeg10:07:101
212486994438,4cyclictest238494-21munin-limits07:30:333
212486994436,6cyclictest247560-21ThreadPoolForeg09:30:343
212481994439,4cyclictest488215-21kworker/u8:1+flush-179:012:05:112
212481994439,3cyclictest260806-21/usr/share/muni07:55:032
21247899444,39cyclictest529865-21kworker/u8:3+efi_rts_wq12:25:581
212472994439,4cyclictest256373-21ntpq07:50:120
212472994430,13cyclictest56017-1kworker/0:0H+kblockd08:57:170
212486994339,3cyclictest446490-21kworker/u8:0+flush-179:011:43:053
212486994336,6cyclictest247560-21ThreadPoolForeg10:16:493
212486994327,4cyclictest477226-31munin-html11:20:363
212481994339,3cyclictest415757-21kworker/u8:3+events_unbound10:55:192
212481994339,3cyclictest415757-21kworker/u8:3+events_unbound10:55:192
212481994339,3cyclictest223277-21kworker/u8:4+events_unbound07:41:592
212481994338,3cyclictest383299-21kworker/u8:0+events_unbound10:10:222
212481994338,3cyclictest172728-21kworker/2:2+pm08:20:062
212481994337,4cyclictest446090-31munin-html10:50:352
212481994337,4cyclictest331736-21kworker/u8:3+flush-179:009:00:272
212481994337,4cyclictest331736-21kworker/u8:3+flush-179:009:00:272
212478994339,3cyclictest472450-21kworker/u8:4+flush-179:012:00:281
212478994337,4cyclictest354696-21/usr/share/muni09:25:161
212472994337,4cyclictest539227-31munin-html12:20:450
212472994337,4cyclictest280603-21kworker/u8:5+flush-179:008:20:310
212486994236,4cyclictest280232-31munin-html08:10:353
212486994235,5cyclictest247561-21ThreadPoolForeg09:45:303
212486994233,7cyclictest3125687-21ThreadPoolForeg12:36:313
212486994228,11cyclictest333300-21/usr/share/muni09:05:153
212486994227,13cyclictest281781-1kworker/3:0H+kblockd11:05:353
212481994238,3cyclictest472450-21kworker/u8:4+flush-179:011:50:562
212481994238,3cyclictest323453-21kworker/u8:2+flush-179:009:10:172
212481994238,3cyclictest223277-21kworker/u8:4+flush-179:008:30:232
212481994235,5cyclictest472450-21kworker/u8:4+flush-179:011:28:522
212478994237,4cyclictest280575-21kworker/u8:0+flush-179:008:45:011
21247899421,2cyclictest247557-21chrome11:26:301
212472994238,3cyclictest99884-21rs:main0
212472994237,4cyclictest76405-21systemd-journal10:08:510
212486994137,3cyclictest477677-21kworker/u8:2+flush-179:011:30:323
212486994135,5cyclictest371309-21ntpq09:40:153
212486994134,5cyclictest426428-21/usr/share/muni10:35:123
212486994131,9cyclictest281781-1kworker/3:0H+kblockd12:00:203
212481994138,2cyclictest172728-21kworker/2:2+pm08:05:512
212481994137,3cyclictest217109-21kworker/u8:0+events_unbound07:25:022
212481994137,3cyclictest172728-21kworker/2:2+pm08:17:122
212481994136,4cyclictest280575-21kworker/u8:0+flush-179:009:16:422
212481994135,4cyclictest485006-21ntpq11:30:152
212481994135,4cyclictest247561-21ThreadPoolForeg12:25:042
212481994134,5cyclictest427615-21apt-get10:35:122
212478994136,2cyclictest280603-21kworker/u8:5+flush-179:008:20:011
212486994037,2cyclictest281781-1kworker/3:0H+kblockd11:04:373
212486994037,2cyclictest281781-1kworker/3:0H+kblockd10:02:383
212486994036,3cyclictest337850-21kworker/u8:5+flush-179:009:35:263
212486994034,5cyclictest247560-21ThreadPoolForeg11:19:193
212486994031,8cyclictest438082-21ThreadPoolForeg10:45:143
212486994014,13cyclictest247563-13Compositor10:29:553
212486994014,13cyclictest247563-13Compositor10:29:543
21248699400,38cyclictest1250-21munin-node08:00:013
212481994037,2cyclictest359237-21kworker/2:0+pm11:19:242
212481994037,2cyclictest172728-21kworker/2:2+pm07:50:292
212481994037,2cyclictest172728-21kworker/2:2+pm07:14:242
212481994036,3cyclictest323453-21kworker/u8:2+events_unbound09:50:452
212481994035,3cyclictest359237-21kworker/2:0+pm12:32:022
212481994035,3cyclictest323453-21kworker/u8:2+flush-179:009:40:222
212481994034,4cyclictest359237-21kworker/2:0+pm11:08:582
212472994036,3cyclictest374753-21kworker/u8:1+flush-179:009:45:240
212472994036,3cyclictest313766-21ThreadPoolForeg08:45:160
212472994036,3cyclictest223277-21kworker/u8:4+flush-179:007:56:250
212472994035,4cyclictest247573-21ThreadPoolForeg07:15:340
212472994034,4cyclictest333309-21/usr/share/muni09:05:170
212486993937,1cyclictest3211985-1kworker/3:1H+kblockd07:57:303
212486993935,2cyclictest3125721-21chrome08:05:113
212486993935,2cyclictest281781-1kworker/3:0H+kblockd08:21:593
212486993933,5cyclictest228498-21kworker/3:1+pm08:29:253
212486993933,4cyclictest327958-21/usr/share/muni09:00:053
212486993933,4cyclictest327958-21/usr/share/muni09:00:053
212486993933,4cyclictest297011-21/usr/share/muni08:30:103
212486993929,9cyclictest3125648-13Chrome_IOThread11:48:413
212481993937,1cyclictest359237-21kworker/2:0+pm11:43:362
212481993936,2cyclictest172728-21kworker/2:2+pm07:21:132
212481993935,3cyclictest172728-21kworker/2:2+pm07:35:542
212481993930,7cyclictest247560-21ThreadPoolForeg08:25:362
212481993916,3cyclictest420874-21kworker/u8:0+flush-179:010:45:242
21248199391,36cyclictest3125728-13Compositor07:30:532
212478993935,2cyclictest322566-21kworker/1:2+pm10:46:561
212478993933,4cyclictest227841-21ntpq07:20:331
212472993936,2cyclictest3125721-21chrome11:16:270
212472993935,3cyclictest223277-21kworker/u8:4+flush-179:008:00:060
212472993934,3cyclictest249991-21/usr/share/muni07:45:130
212472993928,10cyclictest56017-1kworker/0:0H+kblockd08:17:020
212486993834,3cyclictest3211985-1kworker/3:1H+kblockd07:19:443
212486993834,3cyclictest281781-1kworker/3:0H+kblockd12:07:103
212486993828,9cyclictest3211985-1kworker/3:1H+kblockd07:28:543
212486993815,22cyclictest3125708-13Chrome_ChildIOT10:08:223
212481993836,1cyclictest359237-21kworker/2:0+pm12:21:152
212481993835,2cyclictest359237-21kworker/2:0+pm11:59:512
212481993835,2cyclictest359237-21kworker/2:0+pm11:59:512
212481993830,6cyclictest247560-21ThreadPoolForeg08:49:042
212478993835,2cyclictest132149-1kworker/1:1H+kblockd08:58:551
212478993834,3cyclictest244219-21kworker/u8:3+events_unbound07:55:201
212478993831,5cyclictest529267-31munin-html12:10:351
212472993834,2cyclictest56017-1kworker/0:0H+kblockd11:45:060
212472993833,4cyclictest3125724-21ThreadPoolForeg10:21:410
212486993734,2cyclictest281781-1kworker/3:0H+kblockd11:56:393
212486993734,2cyclictest281781-1kworker/3:0H+kblockd11:56:393
212486993734,2cyclictest281781-1kworker/3:0H+kblockd09:12:103
212486993733,3cyclictest323453-21kworker/u8:2+flush-179:009:15:233
212481993733,3cyclictest359237-21kworker/2:0+pm09:45:102
212481993733,3cyclictest172728-21kworker/2:2+pm08:04:092
212481993733,2cyclictest359237-21kworker/2:0+pm12:10:082
212478993734,2cyclictest280575-21kworker/u8:0+flush-179:009:10:341
212478993734,2cyclictest132149-1kworker/1:1H+kblockd08:45:231
212478993734,2cyclictest132149-1kworker/1:1H+kblockd07:50:061
212478993733,3cyclictest132149-1kworker/1:1H+kblockd10:25:371
212478993733,3cyclictest132149-1kworker/1:1H+kblockd10:25:361
212478993728,8cyclictest331736-21kworker/u8:3+flush-179:009:07:041
212478993721,15cyclictest508998-21kworker/u8:0+flush-179:012:05:151
21247899371,35cyclictest3125709-13VizCompositorTh07:45:061
212472993734,2cyclictest56017-1kworker/0:0H+kblockd10:45:110
212472993734,2cyclictest56017-1kworker/0:0H+kblockd08:35:350
212472993734,2cyclictest477611-21kworker/0:2+pm11:44:400
212472993734,2cyclictest323453-21kworker/u8:2+flush-179:009:26:360
212472993733,2cyclictest477611-21kworker/0:2+pm12:07:340
212472993732,4cyclictest425736-31munin-html10:30:370
212486993634,1cyclictest3211985-1kworker/3:1H+kblockd07:36:503
212486993634,1cyclictest281781-1kworker/3:0H+kblockd09:52:253
212486993633,2cyclictest3211985-1kworker/3:1H+kblockd07:10:173
212486993633,2cyclictest281781-1kworker/3:0H+kblockd10:58:353
212486993633,2cyclictest281781-1kworker/3:0H+kblockd10:58:353
212486993633,2cyclictest281781-1kworker/3:0H+kblockd10:40:303
212486993633,2cyclictest281781-1kworker/3:0H+kblockd09:25:073
212486993633,2cyclictest281781-1kworker/3:0H+kblockd08:40:563
212486993632,3cyclictest281781-1kworker/3:0H+kblockd08:57:353
212486993632,2cyclictest281781-1kworker/3:0H+kblockd12:23:523
212486993631,4cyclictest441340-21kworker/u8:2+events_unbound10:50:093
212486993631,4cyclictest400443-21kworker/u8:1+flush-179:011:11:133
212486993631,4cyclictest400443-21kworker/u8:1+flush-179:011:11:123
212478993634,1cyclictest132149-1kworker/1:1H+kblockd11:53:531
212478993634,1cyclictest132149-1kworker/1:1H+kblockd09:31:341
212478993633,2cyclictest132149-1kworker/1:1H+kblockd10:44:411
212478993633,2cyclictest132149-1kworker/1:1H+kblockd10:02:581
212478993633,2cyclictest132149-1kworker/1:1H+kblockd09:37:091
212478993633,2cyclictest132149-1kworker/1:1H+kblockd09:00:081
212478993633,2cyclictest132149-1kworker/1:1H+kblockd09:00:081
212478993632,3cyclictest422553-21apt-get10:30:131
212478993632,3cyclictest400443-21kworker/u8:1+flush-179:010:20:221
212478993632,3cyclictest3125708-13Chrome_ChildIOT11:17:441
212478993632,3cyclictest244219-21kworker/u8:3+flush-179:008:21:321
212478993632,2cyclictest132149-1kworker/1:1H+kblockd09:20:181
212478993632,2cyclictest132149-1kworker/1:1H+kblockd07:31:301
212478993631,4cyclictest448382-21apt-get10:55:151
212478993631,4cyclictest448382-21apt-get10:55:151
212472993634,1cyclictest56017-1kworker/0:0H+kblockd11:09:220
212472993634,1cyclictest56017-1kworker/0:0H+kblockd10:27:580
212472993634,1cyclictest56017-1kworker/0:0H+kblockd10:27:580
212472993634,1cyclictest56017-1kworker/0:0H+kblockd10:01:420
212472993633,2cyclictest56017-1kworker/0:0H+kblockd11:10:350
212472993633,2cyclictest56017-1kworker/0:0H+kblockd11:10:350
212472993633,2cyclictest56017-1kworker/0:0H+kblockd07:40:220
212472993631,4cyclictest247562-13Chrome_ChildIOT09:36:190
212486993533,1cyclictest281781-1kworker/3:0H+kblockd12:10:183
212486993529,5cyclictest1260-21snmpd08:38:583
21247899359,25cyclictest3125728-13Compositor09:54:321
212478993533,1cyclictest132149-1kworker/1:1H+kblockd07:14:421
212478993532,2cyclictest132149-1kworker/1:1H+kblockd09:48:481
212478993532,2cyclictest132149-1kworker/1:1H+kblockd08:01:211
212478993531,3cyclictest464893-21kworker/u8:2+flush-179:011:11:071
212478993531,3cyclictest464893-21kworker/u8:2+flush-179:011:11:061
212478993531,2cyclictest132149-1kworker/1:1H+kblockd07:25:061
212478993529,4cyclictest513683-31munin-html11:55:381
212478993529,4cyclictest513683-31munin-html11:55:371
212478993521,2cyclictest3125721-21chrome10:39:191
212478993518,13cyclictest3125627-21ChromeDriver00:55:191
212472993533,1cyclictest56017-1kworker/0:0H+kblockd12:19:400
212472993533,1cyclictest56017-1kworker/0:0H+kblockd07:32:200
212472993532,2cyclictest56017-1kworker/0:0H+kblockd11:51:440
212472993532,2cyclictest56017-1kworker/0:0H+kblockd10:14:210
212472993532,2cyclictest244219-21kworker/u8:3+flush-179:008:30:310
212472993531,3cyclictest383299-21kworker/u8:0+flush-179:009:54:190
212472993531,3cyclictest223618-21munin-update07:20:040
212472993529,4cyclictest478475-21/usr/share/muni11:25:210
212486993432,1cyclictest462346-21kworker/3:2+pm12:34:523
212486993432,1cyclictest281781-1kworker/3:0H+kblockd10:34:533
212486993430,2cyclictest1260-21snmpd07:20:443
21248699341,3cyclictest3125721-21chrome11:35:163
212478993431,2cyclictest132149-1kworker/1:1H+kblockd10:13:001
212478993431,2cyclictest132149-1kworker/1:1H+kblockd08:10:041
212478993431,2cyclictest0-21swapper/109:15:091
212472993433,1cyclictest56017-1kworker/0:0H+kblockd11:33:310
212472993433,1cyclictest56017-1kworker/0:0H+kblockd08:44:240
212472993432,1cyclictest56017-1kworker/0:0H+kblockd12:35:200
212472993432,1cyclictest56017-1kworker/0:0H+kblockd10:40:010
212472993432,1cyclictest56017-1kworker/0:0H+kblockd09:32:020
212472993432,1cyclictest56017-1kworker/0:0H+kblockd08:13:100
212472993432,1cyclictest56017-1kworker/0:0H+kblockd07:12:390
212472993431,2cyclictest250262-21kworker/0:1+pm08:07:270
212472993431,2cyclictest247557-21chrome07:29:230
212472993420,2cyclictest247557-21chrome10:15:100
21247299341,32cyclictest293182-21apache_volume08:25:140
212486993323,9cyclictest3125648-13Chrome_IOThread07:43:543
212478993331,1cyclictest132149-1kworker/1:1H+kblockd12:32:531
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212478993025,4cyclictest535448-21/usr/share/muni12:20:031
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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