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2025-12-14 - 15:18
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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 all highest latencies:
System rackbslot1.osadl.org (updated Sun Dec 14, 2025 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
37941432223181,32sleep30-21swapper/307:07:243
37940932186146,30sleep20-21swapper/207:06:472
37942622185162,13sleep00-21swapper/007:08:550
37941412177156,12sleep10-21swapper/107:07:231
3794534996560,3cyclictest3982113-21latency_hist10:10:001
3794537996343,3cyclictest4096019-21kworker/u8:4+flush-179:012:11:412
3794531996357,4cyclictest3936979-21diskstats09:25:180
3794534996157,3cyclictest4043941-21kworker/u8:0+flush-179:011:10:341
3794534996054,4cyclictest3968160-21kworker/u8:0+events_unbound10:35:291
3794531996054,4cyclictest4061010-21ntpq11:25:150
3794534995954,3cyclictest3995637-21kworker/u8:4+events_unbound10:50:351
3794531995955,3cyclictest4131223-21munin-update12:35:350
3794539995754,2cyclictest3976744-21gpgv10:05:013
3794537995551,3cyclictest3893192-21latency_hist08:45:012
3794534995552,2cyclictest3986976-21kworker/u8:1+flush-179:010:25:211
3794534995550,3cyclictest4043397-21munin-limits11:05:351
3794531995551,3cyclictest3914491-21/usr/share/muni09:05:160
3794531995548,5cyclictest3982368-21/usr/share/muni10:10:110
3794537995451,2cyclictest4069635-21kworker/u8:1+flush-179:011:35:282
3794534995450,3cyclictest3830851-21kworker/u8:0+flush-179:008:05:321
3794534995449,3cyclictest3955696-21kworker/u8:1+events_unbound09:45:301
3794534995449,3cyclictest3947040-21kworker/u8:3+events_unbound10:04:121
3794539995347,5cyclictest3830851-21kworker/u8:0+flush-179:009:05:113
3794537995339,2cyclictest3893492-21chrome08:45:012
3794537995332,20cyclictest3913914-21kworker/2:2+pm09:48:592
3794534995349,3cyclictest4026587-21kworker/u8:2+flush-179:011:00:271
3794539995243,6cyclictest3940475-21/usr/share/muni09:30:113
3794534995247,3cyclictest3757668-21kworker/u8:4+flush-179:008:03:271
3794531995247,4cyclictest3125725-21ThreadPoolForeg10:25:300
3794534995148,2cyclictest4033332-21kworker/u8:3+events_unbound11:43:501
3794539995045,3cyclictest3757668-21kworker/u8:4+events_unbound08:20:143
3794537995046,3cyclictest3987474-21/usr/share/muni10:15:192
3794537995023,11cyclictest3971293-21kworker/2:1+pm11:55:302
379453799501,43cyclictest4069309-31munin-graph11:31:112
3794534995046,3cyclictest3976346-21kworker/u8:2+events_unbound10:15:401
3794531995045,4cyclictest3947040-21kworker/u8:3+flush-179:009:39:310
3794531995042,7cyclictest3125687-21ThreadPoolForeg07:51:550
3794537994944,4cyclictest3125688-21Chrome_ChildIOT12:25:002
3794537994928,20cyclictest1260-21snmpd07:58:382
3794534994945,3cyclictest4033332-21kworker/u8:3+flush-179:011:50:281
3794534994945,3cyclictest3757668-21kworker/u8:4+flush-179:009:30:221
3794531994946,2cyclictest4026587-21kworker/u8:2+flush-179:011:05:310
3794539994843,4cyclictest3757668-21kworker/u8:4+flush-179:007:30:223
3794537994843,4cyclictest247561-21ThreadPoolForeg10:40:042
3794537994810,37cyclictest247557-21chrome08:01:042
3794534994844,3cyclictest3924468-21kworker/u8:0+events_unbound09:15:301
3794534994844,3cyclictest3757668-21kworker/u8:4+flush-179:007:20:301
3794531994844,3cyclictest3956236-21/usr/share/muni09:45:030
39618062470,1sleep20-21swapper/209:50:062
3794539994742,4cyclictest3995637-21kworker/u8:4+flush-179:010:40:363
3794537994744,1cyclictest3831815-21chrome07:45:032
3794537994734,12cyclictest3125627-21ChromeDriver00:55:192
379453799471,16cyclictest247545-13VizCompositorTh11:51:392
3794534994744,2cyclictest3857013-21kworker/u8:3+flush-179:008:10:191
3794534994743,3cyclictest4069635-21kworker/u8:1+flush-179:011:35:231
3794534994743,3cyclictest3986976-21kworker/u8:1+events_unbound10:40:301
3794534994742,3cyclictest4079823-21kworker/u8:2+flush-179:011:55:201
3794534994738,5cyclictest3945570-21/usr/share/muni09:35:101
3794539994641,4cyclictest3815575-21kworker/u8:2+flush-179:008:00:143
3794539994641,4cyclictest3773243-21kworker/u8:1+flush-179:007:50:113
3794537994636,9cyclictest3971293-21kworker/2:1+pm11:16:052
3794537994636,7cyclictest3971293-21kworker/2:1+pm10:07:452
3794537994631,14cyclictest4100789-21/usr/share/muni12:05:172
3794537994626,16cyclictest3125726-13Chrome_ChildIOT11:44:522
3794534994643,2cyclictest3995637-21kworker/u8:4+flush-179:011:30:171
3794534994643,2cyclictest3757668-21kworker/u8:4+flush-179:009:50:221
3794534994642,3cyclictest4115664-21kworker/u8:1+flush-179:012:20:251
3794534994642,3cyclictest4115664-21kworker/u8:1+events_unbound12:35:291
3794534994642,3cyclictest3887727-21kworker/u8:2+flush-179:008:50:291
3794534994642,3cyclictest3773243-21kworker/u8:1+flush-179:007:50:121
3794534994642,3cyclictest3757668-21kworker/u8:4+events_unbound10:10:091
3794534994641,4cyclictest4043941-21kworker/u8:0+events_unbound11:15:351
3794534994641,4cyclictest3773243-21kworker/u8:1+events_unbound07:45:341
3794534994640,4cyclictest3703508-21kworker/u8:0+flush-179:007:25:261
3794534994632,3cyclictest3995637-21kworker/u8:4+flush-179:011:20:221
3794531994643,3cyclictest3887727-21kworker/u8:2+flush-179:009:40:120
3794531994642,3cyclictest3830851-21kworker/u8:0+flush-179:008:25:160
3794531994642,2cyclictest3894895-21kworker/u8:1+flush-179:008:45:310
3794531994634,3cyclictest3816144-21/usr/share/muni07:30:040
3794531994630,14cyclictest4006815-21ntpq10:30:360
3794537994539,5cyclictest4121261-21/usr/share/muni12:25:092
379453799450,1cyclictest3125684-21Chrome_DevTools10:11:102
3794534994541,3cyclictest4089924-21kworker/u8:0+flush-179:012:25:211
3794534994541,3cyclictest3757668-21kworker/u8:4+flush-179:009:20:071
3794534994541,3cyclictest3757668-21kworker/u8:4+flush-179:007:15:281
3794534994541,3cyclictest3757668-21kworker/u8:4+flush-179:007:15:271
3794534994539,4cyclictest3935256-21/usr/share/muni09:25:031
3794531994539,5cyclictest247516-21Chrome_ChildIOT10:00:390
3794537994436,6cyclictest3125687-21ThreadPoolForeg12:04:592
3794537994435,8cyclictest3913914-21kworker/2:2+pm09:08:422
3794537994434,9cyclictest3971293-21kworker/2:1+pm10:20:042
3794534994441,2cyclictest4115664-21kworker/u8:1+events_unbound12:30:281
3794534994441,2cyclictest3830851-21kworker/u8:0+flush-179:008:25:201
3794534994440,3cyclictest3986976-21kworker/u8:1+flush-179:010:55:291
3794534994440,3cyclictest3955696-21kworker/u8:1+events_unbound09:42:081
3794534994440,3cyclictest3773243-21kworker/u8:1+events_unbound07:30:051
3794534994439,2cyclictest2863913-1kworker/1:0H+kblockd12:00:331
3794539994339,3cyclictest3968160-21kworker/u8:0+flush-179:010:28:173
3794539994339,3cyclictest3858919-21apt-get08:10:143
3794539994337,4cyclictest4115664-21kworker/u8:1+flush-179:012:30:363
3794539994332,2cyclictest3150163-1kworker/3:2H+kblockd07:29:393
3794537994335,7cyclictest3971293-21kworker/2:1+pm11:26:032
3794537994333,9cyclictest3971293-21kworker/2:1+pm10:54:112
3794537994332,9cyclictest3971293-21kworker/2:1+pm10:49:062
3794537994310,32cyclictest4043604-31munin-html11:05:442
3794534994340,2cyclictest3976346-21kworker/u8:2+flush-179:010:20:131
3794534994340,2cyclictest3815575-21kworker/u8:2+events_unbound07:55:291
3794534994339,3cyclictest4095319-21kworker/u8:3+flush-179:012:10:161
3794534994338,4cyclictest3986976-21kworker/u8:1+flush-179:010:45:251
3794534994338,4cyclictest3887727-21kworker/u8:2+flush-179:008:43:231
3794534994331,11cyclictest3830851-21kworker/u8:0+events_unbound08:57:531
3794531994338,4cyclictest3878116-21/usr/share/muni08:30:160
3794539994236,4cyclictest3703508-21kworker/u8:0+flush-179:007:10:143
3794539994229,11cyclictest3996999-1kworker/3:1H+kblockd12:21:353
3794537994233,8cyclictest3882857-21kworker/2:2+pm08:35:162
3794537994233,8cyclictest3882857-21kworker/2:2+pm08:35:162
3794537994227,14cyclictest247516-21Chrome_ChildIOT08:50:232
3794537994226,10cyclictest1260-21snmpd07:16:442
3794537994226,10cyclictest1260-21snmpd07:16:442
379453799422,34cyclictest247557-21chrome12:31:232
3794537994220,21cyclictest4095319-21kworker/u8:3+flush-179:012:15:092
3794537994219,2cyclictest3924468-21kworker/u8:0+flush-179:009:35:092
379453799421,3cyclictest4084860-31munin-graph11:46:062
3794534994239,2cyclictest4096019-21kworker/u8:4+events_unbound12:05:101
3794534994239,2cyclictest4005561-21kworker/u8:3+flush-179:010:30:261
3794534994238,3cyclictest4089924-21kworker/u8:0+events_unbound12:18:331
3794534994238,3cyclictest4079823-21kworker/u8:2+flush-179:011:45:171
3794534994238,3cyclictest3830851-21kworker/u8:0+flush-179:009:00:161
3794534994237,3cyclictest3887727-21kworker/u8:2+flush-179:008:36:431
3794534994237,3cyclictest3887727-21kworker/u8:2+flush-179:008:36:431
3794534994237,3cyclictest3830851-21kworker/u8:0+flush-179:009:05:331
3794531994227,3cyclictest3757668-21kworker/u8:4+flush-179:008:35:110
3794531994227,3cyclictest3757668-21kworker/u8:4+flush-179:008:35:100
3794531994211,29cyclictest247561-21ThreadPoolForeg08:01:390
3794539994137,3cyclictest3894895-21kworker/u8:1+flush-179:008:59:593
3794539994136,3cyclictest4089924-21kworker/u8:0+flush-179:012:20:003
3794539994135,4cyclictest3125724-21ThreadPoolForeg08:47:543
3794539994134,5cyclictest3934010-31munin-html09:20:393
3794537994136,3cyclictest3799695-21kworker/2:3+pm07:20:042
3794537994130,10cyclictest1260-21snmpd07:31:322
3794537994128,12cyclictest3125629-21e21169fc69a4c6708:11:172
3794534994138,2cyclictest3757668-21kworker/u8:4+events_unbound09:12:061
3794534994137,3cyclictest3773243-21kworker/u8:1+flush-179:007:40:211
3794531994139,2cyclictest3986976-21kworker/u8:1+flush-179:010:40:320
3794531994138,2cyclictest4033332-21kworker/u8:3+flush-179:011:40:290
3794531994137,3cyclictest3830851-21kworker/u8:0+flush-179:008:15:150
3794531994135,5cyclictest3125688-21Chrome_ChildIOT09:11:160
3794539994037,2cyclictest3125708-13Chrome_ChildIOT11:08:343
3794539994036,3cyclictest3986976-21kworker/u8:1+flush-179:010:19:123
3794539994033,6cyclictest3125724-21ThreadPoolForeg09:43:303
3794539994032,6cyclictest3887384-31munin-html08:35:393
3794539994032,6cyclictest3887384-31munin-html08:35:383
3794539994031,6cyclictest3878115-21/usr/share/muni08:30:053
3794539994030,8cyclictest3125725-21ThreadPoolForeg11:23:053
3794537994037,2cyclictest3913914-21kworker/2:2+pm09:30:072
3794537994036,3cyclictest4110768-21kworker/2:0+pm12:35:012
3794537994036,3cyclictest3830851-21kworker/u8:0+flush-179:009:00:302
3794537994036,3cyclictest3747898-21kworker/2:1+pm07:10:122
3794537994035,5cyclictest3971293-21kworker/2:1+pm11:20:172
3794537994035,4cyclictest4007958-21/usr/share/muni10:35:092
3794537994035,4cyclictest3913914-21kworker/2:2+pm09:44:132
3794537994035,2cyclictest3971293-21kworker/2:1+pm10:55:112
3794537994027,12cyclictest76405-21systemd-journal10:26:342
379453799401,19cyclictest3125721-21chrome09:15:042
379453799400,2cyclictest3125630-13chrome08:31:222
3794534994037,2cyclictest3830851-21kworker/u8:0+events_unbound08:46:411
3794534994036,3cyclictest3830851-21kworker/u8:0+flush-179:008:30:271
3794534994036,2cyclictest2863913-1kworker/1:0H+kblockd08:15:551
3794531994034,5cyclictest247560-21ThreadPoolForeg08:14:330
3794539993936,2cyclictest3805292-21kworker/u8:2+flush-179:007:16:313
3794539993936,2cyclictest3805292-21kworker/u8:2+flush-179:007:16:303
3794539993936,2cyclictest3789306-21kworker/3:3+pm08:54:523
3794539993934,4cyclictest4033332-21kworker/u8:3+flush-179:011:15:133
3794539993934,4cyclictest3996999-1kworker/3:1H+kblockd12:13:433
3794539993934,3cyclictest3981752-31munin-graph10:06:153
3794539993931,6cyclictest4064821-21/usr/share/muni11:30:163
3794539993921,14cyclictest3125599-21python308:43:073
3794537993937,1cyclictest3913914-21kworker/2:2+pm09:14:442
3794537993936,2cyclictest3971293-21kworker/2:1+pm11:04:322
3794537993936,2cyclictest3913914-21kworker/2:2+pm09:21:542
3794537993936,2cyclictest3893222-21kworker/2:1+pm08:55:372
3794537993936,2cyclictest3847140-21kworker/2:1+pm08:28:312
3794537993936,2cyclictest3847140-21kworker/2:1+pm08:20:232
3794537993936,2cyclictest3821026-21kworker/2:2+pm07:50:112
3794537993936,2cyclictest3821026-21kworker/2:2+pm07:42:312
3794537993936,1cyclictest3913914-21kworker/2:2+pm09:26:012
3794537993935,2cyclictest3971293-21kworker/2:1+pm11:10:022
3794537993934,4cyclictest3847140-21kworker/2:1+pm08:17:442
379453799391,37cyclictest3857018-31munin-html08:05:532
3794534993934,4cyclictest3757668-21kworker/u8:4+flush-179:007:14:111
3794534993928,10cyclictest4033332-21kworker/u8:3+flush-179:011:29:361
3794531993933,4cyclictest3909386-21/usr/share/muni09:00:180
3794539993835,2cyclictest3789306-21kworker/3:3+pm11:43:133
3794539993835,2cyclictest3150163-1kworker/3:2H+kblockd09:19:263
3794539993833,3cyclictest3150163-1kworker/3:2H+kblockd07:35:363
3794539993832,4cyclictest4131459-21/usr/share/muni12:35:233
3794539993832,4cyclictest4033332-21kworker/u8:3+flush-179:011:14:173
3794539993830,6cyclictest4034152-21/usr/share/muni11:00:163
379453999380,37cyclictest431rcuc/308:15:353
3794537993836,1cyclictest3913914-21kworker/2:2+pm09:55:302
3794537993836,1cyclictest3821026-21kworker/2:2+pm07:37:002
3794537993834,3cyclictest3971293-21kworker/2:1+pm10:30:342
3794531993834,3cyclictest4117456-21ntpq12:20:140
3794531993834,3cyclictest3939860-1kworker/0:1H+kblockd12:05:560
3794531993834,3cyclictest3939860-1kworker/0:1H+kblockd10:39:540
3794531993834,3cyclictest3757668-21kworker/u8:4+flush-179:009:18:590
3794531993834,2cyclictest3939860-1kworker/0:1H+kblockd11:38:390
3794531993833,3cyclictest4095319-21kworker/u8:3+flush-179:012:00:120
3794539993734,2cyclictest3150163-1kworker/3:2H+kblockd10:13:443
3794539993733,3cyclictest3150163-1kworker/3:2H+kblockd09:25:363
3794539993732,3cyclictest3150163-1kworker/3:2H+kblockd09:45:173
3794539993732,3cyclictest3150163-1kworker/3:2H+kblockd09:00:053
3794539993732,3cyclictest3150163-1kworker/3:2H+kblockd07:50:023
3794539993721,14cyclictest4081776-21df_inode11:45:163
3794537993734,2cyclictest3799695-21kworker/2:3+pm07:29:082
3794534993733,2cyclictest2863913-1kworker/1:0H+kblockd07:38:401
3794534993732,3cyclictest3947040-21kworker/u8:3+events_unbound09:56:531
3794531993734,2cyclictest3939860-1kworker/0:1H+kblockd11:20:020
3794531993734,2cyclictest3939860-1kworker/0:1H+kblockd11:05:000
3794531993734,2cyclictest3939860-1kworker/0:1H+kblockd10:15:120
3794531993734,2cyclictest3646827-1kworker/0:0H+kblockd07:57:470
3794531993734,2cyclictest3646827-1kworker/0:0H+kblockd07:37:120
3794531993734,2cyclictest1260-21snmpd08:42:030
3794531993734,1cyclictest3939860-1kworker/0:1H+kblockd11:46:570
3794531993733,3cyclictest3125648-13Chrome_IOThread10:57:500
3794531993733,2cyclictest3939860-1kworker/0:1H+kblockd11:50:330
3794531993733,2cyclictest3939860-1kworker/0:1H+kblockd11:14:180
3794531993733,2cyclictest3646827-1kworker/0:0H+kblockd07:10:040
3794531993733,2cyclictest3125726-13Chrome_ChildIOT11:58:150
3794531993732,3cyclictest4126128-21munin-update12:30:050
3794531993731,4cyclictest3981732-31munin-html10:05:480
379453199371,35cyclictest3125599-21python307:45:240
3794539993633,2cyclictest3150163-1kworker/3:2H+kblockd09:57:013
3794539993633,2cyclictest3125726-13Chrome_ChildIOT10:22:473
3794539993632,3cyclictest3789306-21kworker/3:3+pm09:14:253
3794539993631,4cyclictest3874273-21ntpq08:25:153
3794539993630,4cyclictest4095606-21/usr/share/muni12:00:093
3794539993629,6cyclictest3125708-13Chrome_ChildIOT07:43:263
3794531993634,1cyclictest3939860-1kworker/0:1H+kblockd12:28:090
3794531993634,1cyclictest3939860-1kworker/0:1H+kblockd12:12:480
3794531993634,1cyclictest3939860-1kworker/0:1H+kblockd10:52:350
3794531993634,1cyclictest3939860-1kworker/0:1H+kblockd09:59:320
3794531993633,2cyclictest3976346-21kworker/u8:2+flush-179:010:20:340
3794531993633,2cyclictest3939860-1kworker/0:1H+kblockd09:53:290
3794531993633,2cyclictest3646827-1kworker/0:0H+kblockd08:25:000
3794531993633,2cyclictest3646827-1kworker/0:0H+kblockd07:21:150
3794531993633,2cyclictest3125599-21python309:33:560
3794531993630,4cyclictest4089924-21kworker/u8:0+flush-179:012:15:480
3794539993532,2cyclictest3150163-1kworker/3:2H+kblockd09:50:243
3794539993532,2cyclictest3150163-1kworker/3:2H+kblockd09:35:313
3794539993531,3cyclictest3995637-21kworker/u8:4+flush-179:010:35:173
3794539993530,4cyclictest4069635-21kworker/u8:1+flush-179:011:58:283
3794539993529,5cyclictest3847166-21latency_hist08:00:013
3794539993528,5cyclictest3352196-21apache212:25:163
3794534993531,3cyclictest3857013-21kworker/u8:3+events_unbound08:21:261
3794531993532,2cyclictest3646827-1kworker/0:0H+kblockd08:52:360
3794531993532,2cyclictest247557-21chrome10:47:270
3794531993531,3cyclictest3125726-13Chrome_ChildIOT11:34:210
3794531993531,2cyclictest3646827-1kworker/0:0H+kblockd07:25:020
3794531993530,3cyclictest3646827-1kworker/0:0H+kblockd08:56:570
3794539993431,2cyclictest3125726-13Chrome_ChildIOT07:24:323
3794539993430,2cyclictest247563-13Compositor11:50:423
3794539993429,3cyclictest4026587-21kworker/u8:2+flush-179:010:55:163
3794531993431,2cyclictest3939860-1kworker/0:1H+kblockd11:20:300
3794539993330,2cyclictest3996999-1kworker/3:1H+kblockd11:39:153
3794539993330,2cyclictest1260-21snmpd11:27:383
3794539993328,3cyclictest3996999-1kworker/3:1H+kblockd10:50:363
3794539993323,9cyclictest3125726-13Chrome_ChildIOT10:30:243
3794531993330,2cyclictest3646827-1kworker/0:0H+kblockd07:40:180
3794531993330,2cyclictest1260-21snmpd07:17:460
3794531993330,2cyclictest1260-21snmpd07:17:460
3794531993329,3cyclictest3125708-13Chrome_ChildIOT08:09:380
3794531993328,3cyclictest3125629-21e21169fc69a4c6709:21:300
3794539993229,2cyclictest3125724-21ThreadPoolForeg12:08:013
3794539993225,5cyclictest247561-21ThreadPoolForeg10:47:493
3794539993127,3cyclictest3125624-21chromedriver08:06:533
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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