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2025-12-11 - 17:01
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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 Thu Dec 11, 2025 12:44:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36093842216186,19sleep30-21swapper/307:07:303
36093812192159,24sleep00-21swapper/007:07:270
36093632192167,14sleep20-21swapper/207:07:132
36093522185161,14sleep10-21swapper/107:07:041
3609793997357,14cyclictest3816775-21kworker/u8:1+flush-179:010:31:502
3609790996865,2cyclictest3895786-21ThreadPoolForeg11:45:010
3609794996357,5cyclictest247560-21ThreadPoolForeg09:10:343
3609793996359,3cyclictest3651421-21kworker/u8:2+flush-179:008:30:012
3609793996256,4cyclictest3724489-21kworker/u8:3+flush-179:009:10:102
3609793996256,4cyclictest3677366-21kworker/u8:0+events_unbound08:20:292
3609794996155,5cyclictest3125725-21ThreadPoolForeg10:40:013
3609793996156,3cyclictest3708438-21kworker/u8:2+flush-179:010:05:202
3609793996055,4cyclictest3942601-21kworker/u8:0+flush-179:012:40:002
3609793995954,4cyclictest3873935-21kworker/u8:1+flush-179:011:25:402
3609793995954,4cyclictest3833924-21kworker/u8:5+events_unbound10:55:012
37240712580,1sleep20-21swapper/208:55:392
3609793995853,3cyclictest3567397-21kworker/u8:0+events_unbound07:50:192
3609793995852,4cyclictest3709113-21chrome08:45:012
3609793995851,5cyclictest3760346-21kworker/u8:1+flush-179:010:15:312
3609790995852,4cyclictest3708061-21munin-limits08:40:350
3609794995753,3cyclictest3873935-21kworker/u8:1+flush-179:011:35:423
3609793995752,4cyclictest3724489-21kworker/u8:3+events_unbound09:30:112
3609793995651,4cyclictest3775599-21kworker/u8:0+events_unbound09:55:172
3609790995652,3cyclictest3889926-21kworker/u8:3+flush-179:012:05:070
3609793995551,3cyclictest3775599-21kworker/u8:0+flush-179:010:35:022
3609793995551,3cyclictest3651421-21kworker/u8:2+flush-179:008:00:002
3609793995551,3cyclictest3651421-21kworker/u8:2+flush-179:008:00:002
3609793995549,4cyclictest3775599-21kworker/u8:0+flush-179:010:40:082
3609791995450,3cyclictest3942601-21kworker/u8:0+flush-179:012:30:151
3609791995446,6cyclictest3817490-21/usr/share/muni10:30:021
3609790995449,4cyclictest3879702-21kworker/u8:0+flush-179:011:57:060
3609793995349,3cyclictest3708438-21kworker/u8:2+flush-179:009:25:122
3609793995245,5cyclictest3667615-21/usr/share/muni08:05:042
3609793995238,13cyclictest3677366-21kworker/u8:0+flush-179:009:00:162
3609793995147,3cyclictest3654405-21kworker/u8:4+flush-179:008:40:302
3609791995143,5cyclictest3921485-21/usr/share/muni12:10:011
3609794995044,5cyclictest76405-21systemd-journal12:17:023
360979499504,45cyclictest3646767-21chrome07:45:023
3609793995047,2cyclictest3833924-21kworker/u8:5+flush-179:010:50:012
3609793995046,3cyclictest3889926-21kworker/u8:3+flush-179:011:45:172
3609793995046,3cyclictest3760346-21kworker/u8:1+events_unbound10:14:052
3609793995045,4cyclictest3801721-21kworker/u8:3+flush-179:010:20:342
3609793995044,5cyclictest3831714-21kworker/u8:3+flush-179:011:13:222
3609790995041,7cyclictest247515-21ThreadPoolForeg08:20:180
3609793994946,2cyclictest3801721-21kworker/u8:3+events_unbound10:30:012
3609793994946,2cyclictest3599040-21kworker/u8:1+flush-179:007:10:182
3609793994945,3cyclictest3724489-21kworker/u8:3+flush-179:009:15:332
3609793994945,3cyclictest3724489-21kworker/u8:3+flush-179:009:08:012
3609793994945,3cyclictest3630833-21kworker/u8:2+flush-179:007:30:192
3609793994945,3cyclictest3599040-21kworker/u8:1+flush-179:007:20:312
3609793994936,12cyclictest3703324-21kworker/2:1+pm08:36:142
3609791994944,4cyclictest3724489-21kworker/u8:3+flush-179:009:45:301
3609791994942,5cyclictest3766335-21/usr/share/muni09:40:141
3609793994845,2cyclictest3848239-21kworker/u8:1+flush-179:011:00:172
3609793994844,3cyclictest3724489-21kworker/u8:3+flush-179:009:35:312
3609793994843,3cyclictest3831714-21kworker/u8:3+flush-179:010:55:152
3609793994842,4cyclictest3646463-21munin-update07:45:352
3609793994840,3cyclictest3833924-21kworker/u8:5+events_unbound12:00:232
3609793994840,3cyclictest3833924-21kworker/u8:5+events_unbound12:00:232
3609793994835,2cyclictest3697935-21kworker/2:2+pm08:51:552
3609791994845,2cyclictest3651421-21kworker/u8:2+flush-179:008:15:001
3609791994842,4cyclictest3719244-21latency_hist08:55:011
3609791994842,4cyclictest3599040-21kworker/u8:1+flush-179:007:20:251
3609793994743,3cyclictest3879702-21kworker/u8:0+flush-179:011:50:152
3609791994741,4cyclictest3884183-31munin-html11:30:361
3609790994742,4cyclictest3942601-21kworker/u8:0+flush-179:012:34:260
3609794994634,10cyclictest3874053-31munin-html11:20:373
3609793994642,3cyclictest3677366-21kworker/u8:0+flush-179:008:15:002
3609793994642,3cyclictest3614472-21kworker/u8:3+flush-179:007:39:282
3609793994642,3cyclictest3599040-21kworker/u8:1+flush-179:008:30:222
3609791994643,2cyclictest3879702-21kworker/u8:0+flush-179:011:50:171
3609791994641,4cyclictest3719254-21munin-update08:55:051
3609791994639,5cyclictest3916276-21/usr/share/muni12:05:021
3609791994638,6cyclictest3667143-21apt-key08:05:011
3609790994638,5cyclictest3125724-21ThreadPoolForeg10:25:400
3609790994634,11cyclictest3879702-21kworker/u8:0+flush-179:011:39:180
3609794994536,8cyclictest3609683-21kworker/3:0+pm07:22:583
3609793994541,3cyclictest3889926-21kworker/u8:3+events_unbound12:06:552
3609793994541,3cyclictest3775599-21kworker/u8:0+events_unbound09:46:312
3609793994530,14cyclictest3614472-21kworker/u8:3+flush-179:007:41:202
3609793994530,14cyclictest3614472-21kworker/u8:3+flush-179:007:41:202
3609791994539,4cyclictest3831714-21kworker/u8:3+flush-179:011:20:341
3609790994534,10cyclictest3838800-21kworker/0:2+pm10:58:190
3609794994432,11cyclictest3523218-1kworker/3:1H+kblockd07:51:033
3609791994441,2cyclictest3602666-21kworker/u8:4+flush-179:007:16:541
3609790994437,5cyclictest3822835-21cp10:35:010
3609790994434,8cyclictest3391386-1kworker/0:0H+kblockd08:30:170
3609790994433,10cyclictest3391386-1kworker/0:0H+kblockd12:00:300
3609790994433,10cyclictest3391386-1kworker/0:0H+kblockd12:00:300
3609794994339,3cyclictest3833924-21kworker/u8:5+flush-179:011:28:443
3609794994339,3cyclictest3703687-21latency_hist08:40:013
3609794994339,3cyclictest3125627-21ChromeDriver00:55:193
3609794994338,4cyclictest3125451-21mqtt2munin10:45:313
3609794994337,4cyclictest3936931-21/usr/share/muni12:25:103
3609794994336,6cyclictest3677366-21kworker/u8:0+flush-179:008:11:063
3609793994339,3cyclictest3889926-21kworker/u8:3+flush-179:012:16:582
3609793994339,3cyclictest3833924-21kworker/u8:5+events_unbound11:30:122
3609793994339,3cyclictest3831714-21kworker/u8:3+flush-179:011:05:182
3609793994337,5cyclictest3760346-21kworker/u8:1+flush-179:009:50:142
3609791994329,13cyclictest3125624-21chromedriver10:15:261
3609790994335,6cyclictest3863733-21python311:10:350
3609790994334,8cyclictest3838800-21kworker/0:2+pm12:11:310
3609794994238,3cyclictest3831714-21kworker/u8:3+flush-179:011:15:183
3609794994236,4cyclictest3900832-21munin-update11:50:053
3609793994238,3cyclictest3936318-21kworker/u8:4+flush-179:012:30:312
3609793994238,3cyclictest3831714-21kworker/u8:3+events_unbound11:15:332
3609793994238,3cyclictest3708438-21kworker/u8:2+events_unbound09:20:192
3609793994238,3cyclictest3708438-21kworker/u8:2+events_unbound09:20:192
3609793994237,3cyclictest3651421-21kworker/u8:2+flush-179:008:15:242
3609791994237,3cyclictest3724489-21kworker/u8:3+flush-179:009:09:411
3609791994230,11cyclictest247516-21Chrome_ChildIOT11:56:531
3609790994236,5cyclictest3797169-21/usr/share/muni10:10:090
3609794994114,16cyclictest3125629-21e21169fc69a4c6709:45:013
360979499410,2cyclictest1253-21openvpn11:33:333
3609793994137,3cyclictest3614472-21kworker/u8:3+flush-179:007:15:202
3609793994137,2cyclictest3833924-21kworker/u8:5+flush-179:011:35:162
3609793994135,3cyclictest3848704-21kworker/2:0+pm12:20:362
3609791994137,3cyclictest3724489-21kworker/u8:3+flush-179:009:25:171
3609791994137,3cyclictest3125627-21ChromeDriver00:55:191
3609791994136,3cyclictest3688637-21/usr/share/muni08:25:101
3609791994136,3cyclictest3614472-21kworker/u8:3+flush-179:007:45:181
3609791994135,4cyclictest3864389-21munin-update11:15:331
3609791994135,4cyclictest3631361-21/usr/share/muni07:30:171
3609791994129,10cyclictest3125709-13VizCompositorTh08:42:201
3609790994135,4cyclictest3646762-21CacheThread_Blo07:45:010
3609794994036,3cyclictest3936318-21kworker/u8:4+flush-179:012:35:303
3609794994030,9cyclictest1260-21snmpd08:42:323
3609794994027,12cyclictest3125629-21e21169fc69a4c6711:12:463
3609793994037,2cyclictest3848704-21kworker/2:0+pm12:26:052
3609793994037,2cyclictest3744409-21kworker/2:1+pm09:43:472
3609793994036,3cyclictest3661985-21munin-update08:00:322
3609793994035,3cyclictest3889926-21kworker/u8:3+events_unbound12:10:402
3609791994036,3cyclictest3831714-21kworker/u8:3+flush-179:011:14:151
3609791994034,4cyclictest3849345-21/usr/share/muni11:00:051
3609791994033,5cyclictest3828278-21/usr/share/muni10:40:081
360979199400,39cyclictest1253-21openvpn10:55:511
3609790994037,2cyclictest3391386-1kworker/0:0H+kblockd12:29:310
3609790994037,2cyclictest3391386-1kworker/0:0H+kblockd07:44:200
3609790994037,2cyclictest3391386-1kworker/0:0H+kblockd07:44:200
3609790994036,3cyclictest3614391-31munin-graph07:11:000
3609790994034,2cyclictest3391386-1kworker/0:0H+kblockd08:10:280
3609790994029,10cyclictest3833785-13chrome10:45:110
360979099401,29cyclictest3125726-13Chrome_ChildIOT10:35:040
3609794993935,3cyclictest3833924-21kworker/u8:5+flush-179:011:00:003
3609794993934,4cyclictest3725014-21/usr/share/muni09:00:223
3609794993933,5cyclictest3523218-1kworker/3:1H+kblockd10:26:003
3609794993929,9cyclictest247557-21chrome07:55:113
3609794993929,9cyclictest247557-21chrome07:55:103
3609794993928,10cyclictest1260-21snmpd10:21:523
3609794993927,11cyclictest3709128-21/usr/share/muni08:45:133
3609794993917,21cyclictest247450-13chrome09:37:243
3609793993936,2cyclictest3744409-21kworker/2:1+pm10:01:002
3609793993935,2cyclictest3848704-21kworker/2:0+pm11:20:052
3609793993935,2cyclictest3577670-21kworker/2:0+pm07:26:062
3609791993934,3cyclictest3786289-31munin-html09:55:391
3609791993933,5cyclictest3125688-21Chrome_ChildIOT09:25:001
3609791993933,5cyclictest3125688-21Chrome_ChildIOT09:25:001
3609790993934,4cyclictest3391386-1kworker/0:0H+kblockd09:17:390
3609790993933,4cyclictest3631359-21/usr/share/muni07:30:060
3609790993928,10cyclictest247563-13Compositor10:19:470
3609790993928,10cyclictest1260-21snmpd10:01:570
3609794993835,2cyclictest3740091-21kworker/3:1+pm09:34:593
3609794993835,2cyclictest3708438-21kworker/u8:2+flush-179:010:00:243
3609794993835,2cyclictest3523218-1kworker/3:1H+kblockd09:20:333
3609794993835,2cyclictest3523218-1kworker/3:1H+kblockd09:20:333
3609794993834,3cyclictest3173940-21apache208:25:053
3609794993832,5cyclictest3125687-21ThreadPoolForeg08:06:013
3609794993830,7cyclictest1253-21openvpn10:54:353
3609794993829,8cyclictest1260-21snmpd09:15:353
3609794993826,2cyclictest3125627-21ChromeDriver00:55:193
3609794993819,7cyclictest3833176-21http10:45:013
3609793993834,3cyclictest3873935-21kworker/u8:1+flush-179:011:42:402
3609793993833,4cyclictest3879702-21kworker/u8:0+flush-179:011:55:132
3609791993834,3cyclictest3848672-1kworker/1:1H+kblockd11:07:161
3609791993834,3cyclictest3592938-1kworker/1:1H+kblockd07:40:331
3609791993834,3cyclictest3592938-1kworker/1:1H+kblockd07:40:331
3609791993830,7cyclictest3125684-21Chrome_DevTools10:54:061
3609791993821,15cyclictest3693737-21/usr/share/muni08:30:031
3609790993835,2cyclictest3391386-1kworker/0:0H+kblockd10:40:030
3609790993835,2cyclictest3391386-1kworker/0:0H+kblockd09:45:160
3609790993833,3cyclictest3880016-21/usr/share/muni11:30:210
3609790993832,4cyclictest3781252-31munin-graph09:51:050
3609790993828,9cyclictest3391386-1kworker/0:0H+kblockd07:17:300
3609790993827,10cyclictest3708438-21kworker/u8:2+flush-179:009:24:530
3609790993827,10cyclictest3708438-21kworker/u8:2+flush-179:009:24:530
3609790993825,12cyclictest3125728-13Compositor09:59:430
3609794993734,2cyclictest3817111-1kworker/3:0H+kblockd12:20:143
3609794993734,2cyclictest3523218-1kworker/3:1H+kblockd09:58:133
3609794993734,2cyclictest3523218-1kworker/3:1H+kblockd07:28:303
3609794993733,3cyclictest3801721-21kworker/u8:3+flush-179:010:18:273
3609794993733,3cyclictest3677366-21kworker/u8:0+flush-179:008:33:153
3609794993733,3cyclictest3640794-31munin-html07:35:403
3609794993733,2cyclictest3523218-1kworker/3:1H+kblockd09:43:483
3609794993728,8cyclictest1260-21snmpd10:30:353
3609794993717,19cyclictest247560-21ThreadPoolForeg12:05:093
3609791993734,2cyclictest3931052-1kworker/1:2H+kblockd12:29:181
3609791993734,2cyclictest3931052-1kworker/1:2H+kblockd12:16:551
3609791993734,2cyclictest3592938-1kworker/1:1H+kblockd09:37:061
3609791993734,2cyclictest3592938-1kworker/1:1H+kblockd08:24:111
3609791993734,2cyclictest3592938-1kworker/1:1H+kblockd07:50:211
3609791993734,2cyclictest3592938-1kworker/1:1H+kblockd07:12:441
3609791993732,4cyclictest3833924-21kworker/u8:5+events_unbound11:25:091
3609791993729,6cyclictest3125725-21ThreadPoolForeg07:58:351
3609791993729,6cyclictest3125725-21ThreadPoolForeg07:58:351
360979199370,36cyclictest0-21swapper/110:09:501
3609790993734,2cyclictest3391386-1kworker/0:0H+kblockd12:16:150
3609790993734,2cyclictest3391386-1kworker/0:0H+kblockd11:45:070
3609790993734,2cyclictest3391386-1kworker/0:0H+kblockd11:05:400
3609790993734,2cyclictest3391386-1kworker/0:0H+kblockd10:21:170
3609790993734,2cyclictest3391386-1kworker/0:0H+kblockd09:40:040
3609790993734,2cyclictest3391386-1kworker/0:0H+kblockd09:03:080
3609790993734,2cyclictest3391386-1kworker/0:0H+kblockd08:04:380
3609790993734,2cyclictest3391386-1kworker/0:0H+kblockd07:36:440
3609790993733,3cyclictest3708438-21kworker/u8:2+flush-179:008:51:300
3609790993733,3cyclictest3391386-1kworker/0:0H+kblockd07:26:010
3609790993733,3cyclictest3125687-21ThreadPoolForeg11:23:200
3609794993634,1cyclictest3523218-1kworker/3:1H+kblockd09:06:103
3609794993633,2cyclictest3817111-1kworker/3:0H+kblockd12:02:543
3609794993633,2cyclictest3817111-1kworker/3:0H+kblockd12:02:543
3609794993633,2cyclictest3775599-21kworker/u8:0+flush-179:009:51:423
3609794993633,2cyclictest3523218-1kworker/3:1H+kblockd10:06:213
3609794993632,3cyclictest3900186-21munin-limits11:45:373
3609794993631,3cyclictest3615021-21/usr/share/muni07:15:193
3609794993610,15cyclictest0-21swapper/311:56:523
3609791993634,1cyclictest3786732-1kworker/1:0H+kblockd10:47:471
3609791993633,2cyclictest3931052-1kworker/1:2H+kblockd12:20:221
3609791993633,2cyclictest3786732-1kworker/1:0H+kblockd10:31:171
3609791993633,2cyclictest3592938-1kworker/1:1H+kblockd09:54:161
3609791993632,3cyclictest3708438-21kworker/u8:2+flush-179:009:00:301
3609791993632,2cyclictest1260-21snmpd08:19:151
3609791993631,4cyclictest3677366-21kworker/u8:0+flush-179:009:20:011
3609791993631,3cyclictest3900475-31munin-graph11:46:171
3609791993623,12cyclictest3599040-21kworker/u8:1+flush-179:008:36:141
3609790993634,1cyclictest3391386-1kworker/0:0H+kblockd09:33:210
3609790993633,2cyclictest3391386-1kworker/0:0H+kblockd12:35:200
3609790993633,2cyclictest3391386-1kworker/0:0H+kblockd08:46:130
3609790993633,2cyclictest3391386-1kworker/0:0H+kblockd08:25:370
3609794993533,1cyclictest3817111-1kworker/3:0H+kblockd12:14:293
3609794993533,1cyclictest3817111-1kworker/3:0H+kblockd11:07:313
3609794993533,1cyclictest3523218-1kworker/3:1H+kblockd08:53:203
3609794993532,2cyclictest3817111-1kworker/3:0H+kblockd11:04:503
3609794993526,2cyclictest3817111-1kworker/3:0H+kblockd12:31:503
3609794993526,1cyclictest1260-21snmpd07:14:193
3609794993525,9cyclictest3125728-13Compositor07:43:543
3609794993525,9cyclictest3125728-13Compositor07:43:543
360979499351,16cyclictest3125599-21python308:15:033
3609791993532,1cyclictest3786732-1kworker/1:0H+kblockd10:00:231
3609791993529,4cyclictest3890565-21/usr/share/muni11:40:011
3609791993526,8cyclictest3801721-21kworker/u8:3+flush-179:010:20:111
3609791993520,14cyclictest3125728-13Compositor10:13:411
360979199350,34cyclictest3125721-21chrome10:35:281
3609790993533,1cyclictest3391386-1kworker/0:0H+kblockd11:16:480
3609790993532,2cyclictest3391386-1kworker/0:0H+kblockd10:05:050
3609790993532,2cyclictest3391386-1kworker/0:0H+kblockd07:52:040
3609790993522,12cyclictest3874972-21if_enp3s011:25:020
3609794993431,2cyclictest3523218-1kworker/3:1H+kblockd08:56:403
3609794993429,4cyclictest247563-13Compositor10:10:303
3609791993428,5cyclictest3636465-21/usr/share/muni07:35:151
3609791993427,6cyclictest3873935-21kworker/u8:1+flush-179:011:37:241
3609791993420,13cyclictest3915502-31munin-html12:00:541
3609791993420,13cyclictest3915502-31munin-html12:00:541
360979099349,14cyclictest3125726-13Chrome_ChildIOT11:03:270
3609790993432,1cyclictest3391386-1kworker/0:0H+kblockd09:06:360
3609790993431,2cyclictest3724489-21kworker/u8:3+events_unbound09:10:150
3609790993431,2cyclictest3636140-21kworker/0:0+pm07:56:400
3609790993431,2cyclictest3636140-21kworker/0:0+pm07:56:400
3609790993431,2cyclictest3391386-1kworker/0:0H+kblockd08:07:260
3609790993431,1cyclictest3391386-1kworker/0:0H+kblockd09:25:300
3609790993430,3cyclictest1260-21snmpd08:56:590
3609790993411,2cyclictest247562-13Chrome_ChildIOT09:39:270
3609790993410,1cyclictest0-21swapper/007:21:290
3609794993330,2cyclictest3125627-21ChromeDriver00:55:193
3609791993330,2cyclictest3592938-1kworker/1:1H+kblockd07:25:361
3609791993329,3cyclictest3708438-21kworker/u8:2+flush-179:008:48:501
3609791993328,4cyclictest3724489-21kworker/u8:3+flush-179:009:31:241
3609791993327,4cyclictest3668396-21ld08:05:101
3609790993331,1cyclictest3391386-1kworker/0:0H+kblockd08:16:050
3609790993330,2cyclictest3391386-1kworker/0:0H+kblockd11:53:410
3609790993320,12cyclictest3125721-21chrome08:36:460
3609794993230,1cyclictest1260-21snmpd07:32:023
3609791993227,4cyclictest3125648-13Chrome_IOThread12:37:041
3609790993230,1cyclictest1260-21snmpd12:20:420
360979099320,31cyclictest3125669-21ThreadPoolSingl10:50:350
3609794993130,1cyclictest3523218-1kworker/3:1H+kblockd08:24:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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