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2025-12-28 - 21:51
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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 792 highest latencies:
System rackbslot1.osadl.org (updated Sun Dec 28, 2025 12:44:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
38393582206178,18sleep00-21swapper/007:08:510
38392132194171,13sleep30-21swapper/307:07:063
38393912181157,14sleep10-21swapper/107:09:171
38391732175151,14sleep20-21swapper/207:06:362
3839668998239,41cyclictest3125728-13Compositor08:45:033
383966699658,56cyclictest4113686-21kworker/u8:0+efi_rts_wq11:45:472
3839662996211,50cyclictest4113686-21kworker/u8:0+efi_rts_wq11:45:471
3839657996255,5cyclictest3866327-21/usr/share/muni07:35:090
3839666995650,4cyclictest4037385-21/usr/share/muni10:20:102
3839666995650,4cyclictest3870793-21kworker/u8:0+flush-179:010:15:112
3839666995551,3cyclictest3870793-21kworker/u8:0+flush-179:009:35:322
3839666995530,21cyclictest3844681-21kworker/2:2+pm07:24:512
3839666995446,6cyclictest4016788-21/usr/share/muni10:00:152
38443682530,2sleep13125708-13Chrome_ChildIOT07:11:531
3839662995346,5cyclictest4073326-21/usr/share/muni10:55:011
3839668995245,5cyclictest247561-21ThreadPoolForeg08:25:083
3839657995246,5cyclictest4083294-21latency_hist11:05:000
3839657995046,3cyclictest3841056-21apt-get07:10:130
3839657995045,4cyclictest4161305-21/usr/share/muni12:20:170
3839668994947,1cyclictest4124207-21munin-update11:45:023
3839666994945,3cyclictest3963723-21kworker/u8:1+flush-179:009:25:342
3839666994935,2cyclictest3844681-21kworker/2:2+pm07:28:532
3839668994845,2cyclictest3944692-21kworker/u8:3+flush-179:009:05:343
3839668994842,4cyclictest3995421-21/usr/share/muni09:40:103
3839666994834,12cyclictest3865800-21kworker/2:0+pm07:35:032
3839662994844,3cyclictest4171774-21/usr/share/muni12:30:011
3839662994832,15cyclictest3952910-21munin-limits08:55:341
3839668994738,6cyclictest247515-21ThreadPoolForeg08:55:353
3839666994740,5cyclictest3876637-21CompositorTileW07:45:092
3839666994737,6cyclictest4057580-21kworker/2:0+pm10:40:582
3839662994743,3cyclictest4109141-21/usr/share/muni11:30:211
3839668994641,4cyclictest4078446-21/usr/share/muni11:00:153
3839666994642,3cyclictest4171300-21kworker/u8:0+flush-179:012:30:362
3839657994643,2cyclictest4043986-21kworker/u8:2+flush-179:010:25:180
3839657994643,2cyclictest3963723-21kworker/u8:1+flush-179:009:45:270
3839657994633,12cyclictest4026851-1kworker/0:1H+kblockd10:45:200
3839668994540,4cyclictest247560-21ThreadPoolForeg09:28:083
3839668994538,5cyclictest3932406-31munin-graph08:35:493
3839668994533,11cyclictest3945690-21/usr/sbin/munin08:50:203
3839668994531,12cyclictest3125728-13Compositor07:29:493
3839666994541,3cyclictest3927604-21kworker/u8:3+flush-179:008:35:352
3839666994538,5cyclictest4012847-21ntpq09:55:172
3839666994534,6cyclictest3916769-31munin-html08:20:352
3839666994513,31cyclictest3125627-21ChromeDriver00:55:192
3839666994513,31cyclictest3125627-21ChromeDriver00:55:192
3839662994541,3cyclictest4103097-21munin-limits11:20:341
3839662994541,3cyclictest3963723-21kworker/u8:1+flush-179:009:40:091
3839662994540,4cyclictest3886363-31munin-html07:50:361
3839662994540,4cyclictest3886363-31munin-html07:50:361
3839662994538,5cyclictest4016777-21/usr/share/muni10:00:011
3839666994441,2cyclictest4113751-21kworker/2:1+pm12:26:482
3839666994439,4cyclictest4052146-21kworker/u8:1+flush-179:011:20:062
3839666994439,3cyclictest4073086-21munin-update10:55:342
3839666994438,4cyclictest4129278-21kworker/u8:4+flush-179:012:05:302
3839666994435,7cyclictest4118668-31munin-html11:35:372
3839666994429,14cyclictest2850041-1kworker/2:0H+kblockd08:25:512
3839666994417,25cyclictest3125721-21chrome11:25:042
3839662994428,15cyclictest247560-21ThreadPoolForeg12:19:341
383965799446,37cyclictest4088794-21kworker/u8:2+efi_rts_wq11:45:470
3839657994440,3cyclictest4018169-21kworker/u8:4+flush-179:010:20:060
3839668994339,3cyclictest3906605-31munin-html08:10:353
3839668994336,5cyclictest4171775-21/usr/share/muni12:30:013
3839666994337,5cyclictest3968963-21kworker/2:2+pm10:28:282
3839666994336,6cyclictest4113751-21kworker/2:1+pm12:00:172
3839666994332,7cyclictest3968963-21kworker/2:2+pm10:07:342
3839662994338,4cyclictest3938210-21ThreadPoolForeg08:45:011
3839657994340,2cyclictest3870793-21kworker/u8:0+flush-179:009:13:480
3839668994239,2cyclictest3718848-1kworker/3:1H+kblockd08:41:313
3839668994239,2cyclictest3718848-1kworker/3:1H+kblockd08:41:303
3839668994237,4cyclictest4129278-21kworker/u8:4+events_unbound12:05:013
3839666994235,5cyclictest4068223-21/usr/share/muni10:50:032
3839666994231,6cyclictest3968963-21kworker/2:2+pm09:48:592
3839657994236,5cyclictest4170884-31munin-graph12:25:480
39750142410,1chrt3975013-21gpg-connect-age09:20:031
3839668994136,4cyclictest4177012-21/usr/share/muni12:35:163
3839668994136,4cyclictest3969388-21/usr/share/muni09:15:163
3839668994136,3cyclictest3989406-31munin-html09:30:363
3839666994138,2cyclictest4113751-21kworker/2:1+pm12:22:162
3839666994137,2cyclictest3968963-21kworker/2:2+pm10:37:562
3839666994135,4cyclictest4000264-21latency_hist09:45:002
3839666994135,4cyclictest2850041-1kworker/2:0H+kblockd12:35:032
3839666994133,6cyclictest247515-21ThreadPoolForeg08:11:092
383966699411,1cyclictest0-21swapper/209:16:002
3839662994136,4cyclictest4088794-21kworker/u8:2+events_unbound11:35:111
3839662994136,4cyclictest247560-21ThreadPoolForeg10:20:141
3839657994138,2cyclictest3125726-13Chrome_ChildIOT08:30:310
3839657994129,1cyclictest1260-21snmpd07:20:360
3839668994035,4cyclictest3944692-21kworker/u8:3+flush-179:009:20:243
3839668994025,14cyclictest3718848-1kworker/3:1H+kblockd10:25:103
3839666994037,2cyclictest4083337-21kworker/2:3+pm11:06:192
3839666994036,3cyclictest4083337-21kworker/2:3+pm11:15:242
3839666994036,3cyclictest4057580-21kworker/2:0+pm10:45:222
3839666994036,3cyclictest3865800-21kworker/2:0+pm08:16:182
3839666994036,3cyclictest3814180-21kworker/2:3+pm07:14:122
3839666994036,2cyclictest3968963-21kworker/2:2+pm10:30:212
3839666994036,2cyclictest3844681-21kworker/2:2+pm07:18:342
3839666994036,2cyclictest2850041-1kworker/2:0H+kblockd09:31:142
3839666994035,3cyclictest3968963-21kworker/2:2+pm09:22:472
3839666994033,6cyclictest3927742-21kworker/2:2+pm08:47:302
3839666994033,6cyclictest3865800-21kworker/2:0+pm07:44:382
3839666994012,27cyclictest3125721-21chrome09:05:482
383966699400,39cyclictest247563-13Compositor08:41:062
383966699400,39cyclictest247563-13Compositor08:41:062
3839662994036,3cyclictest4052146-21kworker/u8:1+flush-179:011:15:241
3839662994035,4cyclictest247516-21Chrome_ChildIOT09:06:131
3839657994036,3cyclictest4057288-21kworker/u8:3+flush-179:011:15:310
3839666993937,1cyclictest3927742-21kworker/2:2+pm08:51:152
3839666993936,2cyclictest4113751-21kworker/2:1+pm12:15:022
3839666993936,2cyclictest4057580-21kworker/2:0+pm11:03:492
3839666993936,2cyclictest3968963-21kworker/2:2+pm10:14:292
3839666993936,2cyclictest3968963-21kworker/2:2+pm09:50:062
3839666993936,2cyclictest3865800-21kworker/2:0+pm08:31:512
3839666993936,2cyclictest3865800-21kworker/2:0+pm08:06:152
3839666993935,3cyclictest2850041-1kworker/2:0H+kblockd11:10:352
3839666993934,3cyclictest3948044-21kworker/2:0+pm09:14:262
3839666993934,3cyclictest3865800-21kworker/2:0+pm08:00:132
383966699391,32cyclictest3958555-31munin-html09:00:422
3839662993936,2cyclictest4057288-21kworker/u8:3+flush-179:010:40:171
3839662993936,2cyclictest3125724-21ThreadPoolForeg07:45:011
3839662993933,4cyclictest4011124-21munin-update09:55:341
3839657993935,2cyclictest3855167-1kworker/0:0H+kblockd09:57:480
3839657993932,6cyclictest247560-21ThreadPoolForeg08:07:080
40169352380,1sleep04016922-21snmp_wanswitch.10:00:030
3839668993836,1cyclictest3839248-21kworker/3:1+pm09:39:453
3839668993834,3cyclictest3954070-21cp09:00:023
3839668993834,3cyclictest3718848-1kworker/3:1H+kblockd10:11:563
3839668993834,2cyclictest3718848-1kworker/3:1H+kblockd11:25:013
3839668993832,4cyclictest3844632-21latency_hist07:15:013
3839666993836,1cyclictest4113751-21kworker/2:1+pm12:11:132
3839666993835,2cyclictest4113751-21kworker/2:1+pm11:50:342
3839666993835,2cyclictest4113751-21kworker/2:1+pm11:43:582
3839666993835,2cyclictest4083337-21kworker/2:3+pm11:30:052
3839666993835,2cyclictest3948044-21kworker/2:0+pm08:55:152
3839666993835,2cyclictest3865800-21kworker/2:0+pm07:55:342
3839666993834,3cyclictest4113751-21kworker/2:1+pm11:55:222
3839666993834,2cyclictest3844681-21kworker/2:2+pm07:30:532
3839662993832,4cyclictest4027225-21/usr/share/muni10:10:061
3839657993835,2cyclictest3870793-21kworker/u8:0+flush-179:009:24:170
3839657993835,2cyclictest3855167-1kworker/0:0H+kblockd09:31:430
3839657993834,3cyclictest4052146-21kworker/u8:1+flush-179:010:40:110
3839657993833,4cyclictest3917108-31munin-graph08:20:470
3839657993824,13cyclictest3927604-21kworker/u8:3+flush-179:008:35:210
3839668993734,2cyclictest3718848-1kworker/3:1H+kblockd12:28:093
3839668993734,2cyclictest3718848-1kworker/3:1H+kblockd11:59:533
3839668993734,2cyclictest3718848-1kworker/3:1H+kblockd11:23:023
3839668993734,2cyclictest3718848-1kworker/3:1H+kblockd10:53:313
3839668993734,2cyclictest3718848-1kworker/3:1H+kblockd09:59:253
3839668993734,1cyclictest3718848-1kworker/3:1H+kblockd12:23:593
3839668993733,3cyclictest4150161-21kworker/u8:3+events_unbound12:10:393
3839668993733,3cyclictest4063851-21ThreadPoolForeg10:45:133
3839668993733,2cyclictest3718848-1kworker/3:1H+kblockd10:05:153
3839668993731,5cyclictest4057288-21kworker/u8:3+events_unbound10:40:143
3839668993730,5cyclictest4032182-21/usr/share/muni10:15:033
3839662993735,1cyclictest3897018-21kworker/1:3+pm09:47:331
3839662993734,2cyclictest3870793-21kworker/u8:0+flush-179:008:20:321
3839662993734,2cyclictest3855154-1kworker/1:0H+kblockd09:15:041
3839662993734,2cyclictest3855154-1kworker/1:0H+kblockd07:31:321
3839662993733,3cyclictest3870793-21kworker/u8:0+flush-179:009:04:541
3839662993733,2cyclictest3855154-1kworker/1:0H+kblockd11:01:031
3839662993732,4cyclictest3851034-21/usr/share/muni07:20:021
3839662993732,4cyclictest247561-21ThreadPoolForeg09:12:041
3839662993730,6cyclictest247516-21Chrome_ChildIOT08:38:241
3839662993721,4cyclictest1260-21snmpd11:55:511
3839657993734,2cyclictest4150161-21kworker/u8:3+flush-179:012:10:280
3839657993734,2cyclictest3855167-1kworker/0:0H+kblockd07:44:420
3839657993734,2cyclictest3610321-1kworker/0:2H+kblockd07:18:130
3839657993732,4cyclictest4057528-21latency_hist10:40:020
3839668993634,1cyclictest3718848-1kworker/3:1H+kblockd10:35:183
3839668993634,1cyclictest3718848-1kworker/3:1H+kblockd07:34:253
3839668993633,2cyclictest3839248-21kworker/3:1+pm07:22:283
3839668993633,2cyclictest3718848-1kworker/3:1H+kblockd11:05:273
3839668993633,2cyclictest3718848-1kworker/3:1H+kblockd10:20:253
3839668993633,2cyclictest3718848-1kworker/3:1H+kblockd10:02:153
3839668993633,2cyclictest3718848-1kworker/3:1H+kblockd08:23:183
3839668993633,2cyclictest3718848-1kworker/3:1H+kblockd07:57:223
3839668993633,2cyclictest3718848-1kworker/3:1H+kblockd07:48:413
3839668993633,2cyclictest3718848-1kworker/3:1H+kblockd07:17:333
3839668993633,2cyclictest3125629-21e21169fc69a4c6707:42:363
3839668993631,4cyclictest4110658-21diskstats11:30:183
3839668993630,4cyclictest4114228-21/usr/share/muni11:35:133
3839662993634,1cyclictest4114021-21kworker/1:2+pm12:07:371
3839662993634,1cyclictest3855154-1kworker/1:0H+kblockd09:52:251
3839662993634,1cyclictest3855154-1kworker/1:0H+kblockd07:55:591
3839662993633,2cyclictest3855154-1kworker/1:0H+kblockd10:27:231
3839662993633,2cyclictest3125708-13Chrome_ChildIOT10:38:561
3839662993632,3cyclictest4089836-21apt-get11:10:131
3839662993632,3cyclictest3870793-21kworker/u8:0+flush-179:008:40:061
3839662993632,3cyclictest3870793-21kworker/u8:0+flush-179:008:05:141
3839662993631,4cyclictest4036645-31munin-html10:15:401
3839662993631,4cyclictest3845047-21/usr/share/muni07:15:061
3839662993631,4cyclictest3125688-21Chrome_ChildIOT09:34:211
3839662993630,4cyclictest247515-21ThreadPoolForeg12:35:041
3839662993628,7cyclictest4088794-21kworker/u8:2+flush-179:011:25:071
3839662993621,14cyclictest3973906-21kworker/u8:2+flush-179:010:08:151
3839657993634,2cyclictest3855167-1kworker/0:0H+kblockd07:50:260
3839657993634,2cyclictest3855167-1kworker/0:0H+kblockd07:50:250
3839657993634,1cyclictest4113848-21kworker/0:1+pm11:53:080
3839657993634,1cyclictest4026851-1kworker/0:1H+kblockd11:43:360
3839657993634,1cyclictest3855167-1kworker/0:0H+kblockd09:38:560
3839657993633,2cyclictest4068588-21kworker/u8:2+flush-179:010:55:310
3839657993633,2cyclictest4026851-1kworker/0:1H+kblockd11:32:440
3839657993633,2cyclictest4026851-1kworker/0:1H+kblockd11:27:110
3839657993633,2cyclictest4026851-1kworker/0:1H+kblockd10:30:160
3839657993633,2cyclictest3855167-1kworker/0:0H+kblockd09:01:380
3839657993632,3cyclictest3963723-21kworker/u8:1+events_unbound09:27:090
3839657993632,3cyclictest3960393-21apt-get09:05:120
3839657993632,3cyclictest3876655-21/usr/share/muni07:45:130
3839657993632,3cyclictest3870793-21kworker/u8:0+flush-179:008:40:360
3839657993632,3cyclictest3870793-21kworker/u8:0+flush-179:008:40:360
3839657993632,3cyclictest3870793-21kworker/u8:0+flush-179:007:55:090
3839657993632,2cyclictest4026851-1kworker/0:1H+kblockd11:07:100
3839668993533,1cyclictest3718848-1kworker/3:1H+kblockd10:32:293
3839668993533,1cyclictest3718848-1kworker/3:1H+kblockd08:04:463
3839668993532,2cyclictest4052146-21kworker/u8:1+events_unbound11:10:213
3839668993532,2cyclictest3718848-1kworker/3:1H+kblockd11:17:033
3839668993532,2cyclictest3718848-1kworker/3:1H+kblockd09:54:543
3839668993532,2cyclictest3718848-1kworker/3:1H+kblockd08:33:383
3839668993532,2cyclictest3718848-1kworker/3:1H+kblockd08:15:073
3839668993532,2cyclictest3125721-21chrome08:07:453
3839662993533,2cyclictest3855154-1kworker/1:0H+kblockd08:25:241
3839662993533,1cyclictest3855154-1kworker/1:0H+kblockd08:00:131
3839662993532,2cyclictest4043986-21kworker/u8:2+flush-179:010:34:171
3839662993532,2cyclictest3855154-1kworker/1:0H+kblockd08:30:241
3839662993531,3cyclictest3908719-21apt-get08:15:141
3839662993531,3cyclictest247560-21ThreadPoolForeg12:23:591
3839662993520,2cyclictest3125627-21ChromeDriver00:55:191
383965799354,30cyclictest3125648-13Chrome_IOThread09:51:220
3839657993534,1cyclictest3855167-1kworker/0:0H+kblockd08:14:340
3839657993534,1cyclictest3846647-21kworker/0:2+pm07:32:440
3839657993533,1cyclictest4026851-1kworker/0:1H+kblockd11:35:070
3839657993533,1cyclictest4026851-1kworker/0:1H+kblockd11:11:150
3839657993533,1cyclictest4026851-1kworker/0:1H+kblockd10:17:440
3839657993532,2cyclictest4113686-21kworker/u8:0+flush-179:011:55:180
3839657993532,2cyclictest3870793-21kworker/u8:0+flush-179:009:41:070
3839657993532,2cyclictest3125726-13Chrome_ChildIOT11:21:240
3839657993530,4cyclictest3970955-21ntpq09:15:160
3839668993431,2cyclictest3718848-1kworker/3:1H+kblockd07:52:433
3839668993431,2cyclictest3718848-1kworker/3:1H+kblockd07:52:433
3839668993431,1cyclictest3718848-1kworker/3:1H+kblockd11:40:533
3839668993426,4cyclictest247516-21Chrome_ChildIOT10:55:053
3839662993432,1cyclictest3855154-1kworker/1:0H+kblockd12:01:011
3839662993432,1cyclictest0-21swapper/111:05:051
3839662993431,2cyclictest3125627-21ChromeDriver00:55:191
3839657993432,1cyclictest4026851-1kworker/0:1H+kblockd12:16:520
3839657993432,1cyclictest4005706-21kworker/0:0+pm10:07:540
3839657993432,1cyclictest3855167-1kworker/0:0H+kblockd08:54:290
3839657993431,2cyclictest4171300-21kworker/u8:0+flush-179:012:35:300
3839657993431,2cyclictest4026851-1kworker/0:1H+kblockd10:14:590
3839657993431,2cyclictest3855167-1kworker/0:0H+kblockd07:25:330
3839657993430,3cyclictest3911918-31munin-graph08:15:510
383965799340,33cyclictest3125627-21ChromeDriver00:55:190
3839668993330,2cyclictest3718848-1kworker/3:1H+kblockd07:35:333
3839662993332,1cyclictest3855154-1kworker/1:0H+kblockd07:37:571
3839662993330,2cyclictest3855154-1kworker/1:0H+kblockd08:46:201
3839657993331,1cyclictest4026851-1kworker/0:1H+kblockd12:07:280
3839657993330,2cyclictest4026851-1kworker/0:1H+kblockd12:04:580
3839657993330,2cyclictest3125721-21chrome08:00:100
3839657993319,12cyclictest1260-21snmpd08:25:130
3839668993230,1cyclictest3718848-1kworker/3:1H+kblockd09:12:563
3839668993230,1cyclictest1260-21snmpd12:07:233
3839668993229,2cyclictest0-21swapper/309:46:203
3839662993231,1cyclictest1260-21snmpd07:29:161
3839662993230,1cyclictest1260-21snmpd11:40:311
3839662993230,1cyclictest1260-21snmpd09:26:371
3839662993228,3cyclictest4171307-21gpgv12:30:001
3839662993228,3cyclictest4150161-21kworker/u8:3+events_unbound12:10:411
3839657993231,1cyclictest4026851-1kworker/0:1H+kblockd12:31:420
3839668993128,2cyclictest4113686-21kworker/u8:0+flush-179:011:50:343
3839662993129,1cyclictest4062688-21kworker/1:0+pm10:50:291
3839662993129,1cyclictest1260-21snmpd08:11:101
3839662993129,1cyclictest105470-21isc-net-000011:52:071
3839662993128,2cyclictest3876382-21chrome07:45:001
3839662993127,3cyclictest247560-21ThreadPoolForeg10:47:331
3839657993129,1cyclictest1260-21snmpd08:57:020
3839657993128,2cyclictest3125721-21chrome10:53:570
3839668993027,2cyclictest3718848-1kworker/3:1H+kblockd12:17:593
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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