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2025-12-27 - 20:56
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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 27, 2025 12:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23398612209186,13sleep00-21swapper/007:06:100
23399582205182,13sleep20-21swapper/207:07:242
23398842202178,14sleep30-21swapper/307:06:293
23400642192168,14sleep10-21swapper/107:08:441
258581521520,1sleep30-21swapper/311:05:103
234033999890,4cyclictest2502128-21snmp_wanpowerct09:45:021
2340339998377,3cyclictest3125709-13VizCompositorTh11:45:021
2340344998161,18cyclictest247545-13VizCompositorTh11:45:022
2340339997673,2cyclictest2433713-21kworker/u8:0+flush-179:008:55:351
2340339996763,3cyclictest2569125-21kworker/u8:2+flush-179:011:25:321
25644982640,1chrt2564473-21snmp_wanswitch.10:45:030
2340348996457,5cyclictest3125725-21ThreadPoolForeg10:00:003
2340344996157,3cyclictest2641883-21/usr/share/muni12:00:092
2340339996158,2cyclictest2517262-21kworker/u8:2+events_unbound10:20:311
2340339996156,2cyclictest2621461-21kworker/u8:3+flush-179:011:40:291
2340339995956,2cyclictest2569125-21kworker/u8:2+flush-179:011:20:111
2340339995956,2cyclictest2569125-21kworker/u8:2+events_unbound11:08:111
2340339995949,9cyclictest2555307-21kworker/u8:3+events_unbound10:40:191
2340334995957,2cyclictest2454736-21kworker/u8:2+events_unbound09:20:300
2340348995855,2cyclictest2439627-21snmp_wlanpowerc08:45:023
2340348995852,4cyclictest2344638-21munin-limits07:10:353
2340344995855,2cyclictest2564064-21kworker/u8:0+flush-179:010:45:092
2340344995853,4cyclictest2363175-21apt-get07:30:132
2340344995840,11cyclictest2418450-21kworker/u8:3+flush-179:008:40:142
2340339995855,2cyclictest2569125-21kworker/u8:2+flush-179:011:10:101
2340339995754,2cyclictest2454736-21kworker/u8:2+events_unbound09:02:551
2340334995753,3cyclictest2547624-21kworker/u8:0+flush-179:010:35:150
2340348995548,6cyclictest247573-21ThreadPoolForeg10:40:093
2340344995553,1cyclictest2564064-21kworker/u8:0+flush-179:010:50:152
2340344995551,3cyclictest2308988-21kworker/u8:5+flush-179:007:15:162
2340344995551,3cyclictest2308988-21kworker/u8:5+flush-179:007:15:162
2340344995550,4cyclictest2517262-21kworker/u8:2+flush-179:010:05:102
2340339995551,3cyclictest2574599-21kworker/u8:1+flush-179:011:00:141
2340339995551,3cyclictest2574599-21kworker/u8:1+flush-179:011:00:141
2340334995552,2cyclictest2480526-21kworker/u8:3+events_unbound09:40:010
2340348995447,5cyclictest2549503-21apt-get10:30:143
2340344995450,3cyclictest2362173-21kworker/u8:3+flush-179:008:05:352
2340339995451,2cyclictest2459764-21kworker/u8:4+events_unbound09:05:151
2340334995450,3cyclictest2651586-21kworker/u8:4+flush-179:012:25:280
2340334995450,3cyclictest2308988-21kworker/u8:5+flush-179:007:20:310
2340334995450,3cyclictest2308988-21kworker/u8:5+flush-179:007:20:310
2340344995351,2cyclictest2480526-21kworker/u8:3+flush-179:009:30:092
2340339995347,3cyclictest2480526-21kworker/u8:3+events_unbound09:40:151
2340344995248,3cyclictest2537339-21kworker/u8:1+flush-179:010:30:102
2340344995247,4cyclictest247560-21ThreadPoolForeg12:25:052
234034499521,50cyclictest2418450-21kworker/u8:3+efi_rts_wq08:51:482
2340339995249,2cyclictest2636122-21kworker/u8:0+flush-179:012:00:051
2340339995249,2cyclictest2433713-21kworker/u8:0+flush-179:009:17:311
2340334995236,3cyclictest2361603-21kworker/u8:2+flush-179:008:45:230
2340348995145,5cyclictest3125724-21ThreadPoolForeg10:30:003
2340344995147,3cyclictest2574599-21kworker/u8:1+flush-179:011:05:172
2340344995147,3cyclictest2444337-21munin-limits08:45:392
2340344995143,5cyclictest2502063-21chrome09:45:022
2340339995148,2cyclictest2651586-21kworker/u8:4+flush-179:012:25:271
2340339995146,4cyclictest247561-21ThreadPoolForeg12:00:001
2340344995047,2cyclictest2454736-21kworker/u8:2+events_unbound09:10:352
2340344995047,2cyclictest2418450-21kworker/u8:3+flush-179:009:05:222
2340344995036,2cyclictest2371567-21kworker/2:2+pm07:50:172
2340339995047,2cyclictest2387631-21kworker/u8:0+flush-179:008:30:271
2340339995046,3cyclictest2512143-21kworker/u8:4+events_unbound10:10:151
2340339995045,3cyclictest2616260-21/usr/share/muni11:35:041
2340334995046,3cyclictest2511927-21kworker/u8:3+events_unbound09:52:550
2340348994945,3cyclictest2541457-21kworker/u8:5+flush-179:010:59:553
2340348994945,3cyclictest2517262-21kworker/u8:2+flush-179:010:21:263
2340348994944,4cyclictest2308985-21kworker/u8:4+events_unbound07:25:153
2340344994946,2cyclictest2511927-21kworker/u8:3+events_unbound10:20:102
2340344994944,4cyclictest2589783-21kworker/u8:0+events_unbound11:30:092
2340339994947,2cyclictest2308985-21kworker/u8:4+flush-179:007:25:091
2340334994947,2cyclictest2459764-21kworker/u8:4+flush-179:009:10:120
2340334994946,2cyclictest2361603-21kworker/u8:2+flush-179:007:35:220
2340334994945,3cyclictest2517552-21/usr/share/muni10:00:210
2340334994945,3cyclictest2487484-21apt-get09:30:120
2340344994845,2cyclictest2621461-21kworker/u8:3+flush-179:012:05:322
2340344994845,2cyclictest2454736-21kworker/u8:2+flush-179:009:20:212
2340344994830,17cyclictest2433713-21kworker/u8:0+flush-179:009:42:232
2340339994845,2cyclictest2636122-21kworker/u8:0+events_unbound12:05:221
2340339994845,2cyclictest2361603-21kworker/u8:2+flush-179:008:45:101
2340339994844,3cyclictest2387631-21kworker/u8:0+events_unbound08:20:091
2340339994843,4cyclictest247560-21ThreadPoolForeg09:20:191
234033999481,46cyclictest2418450-21kworker/u8:3+efi_rts_wq08:51:481
2340334994846,2cyclictest2574599-21kworker/u8:1+flush-179:011:05:230
2340334994845,2cyclictest3125684-21Chrome_DevTools12:30:100
2340334994845,2cyclictest2502107-21snmp_areswitch.09:45:020
2340348994733,13cyclictest2480526-21kworker/u8:3+flush-179:009:39:363
2340344994744,2cyclictest2512143-21kworker/u8:4+events_unbound10:25:142
2340344994734,12cyclictest2641583-21kworker/2:2+pm12:10:362
2340339994743,3cyclictest2505402-21kworker/u8:1+flush-179:010:00:321
2340339994743,3cyclictest2418450-21kworker/u8:3+events_unbound08:40:161
2340334994744,2cyclictest2418450-21kworker/u8:3+flush-179:009:00:150
2340334994743,3cyclictest2480526-21kworker/u8:3+flush-179:009:25:180
2340334994743,3cyclictest2449096-21munin-limits08:50:340
2340348994638,7cyclictest3125721-21chrome11:40:003
2340344994642,3cyclictest2517262-21kworker/u8:2+flush-179:010:05:012
2340339994643,2cyclictest2308985-21kworker/u8:4+flush-179:007:50:331
2340339994642,3cyclictest2564064-21kworker/u8:0+flush-179:010:50:221
2340339994641,4cyclictest2308985-21kworker/u8:4+events_unbound07:10:241
2340348994542,2cyclictest2418450-21kworker/u8:3+flush-179:008:50:163
2340348994538,6cyclictest247561-21ThreadPoolForeg07:48:093
2340344994542,2cyclictest2621461-21kworker/u8:3+events_unbound12:15:192
2340344994542,2cyclictest2438624-21kworker/u8:1+flush-179:008:55:132
2340344994540,4cyclictest247562-13Chrome_ChildIOT09:15:142
2340344994539,5cyclictest2663592-21ntpq12:20:132
2340339994543,2cyclictest2361603-21kworker/u8:2+flush-179:007:41:381
2340339994543,1cyclictest2361603-21kworker/u8:2+flush-179:007:35:261
2340339994542,2cyclictest2362173-21kworker/u8:3+events_unbound08:09:341
2340339994542,2cyclictest2308988-21kworker/u8:5+flush-179:007:15:121
2340339994542,2cyclictest2308988-21kworker/u8:5+flush-179:007:15:121
2340339994541,2cyclictest2308985-21kworker/u8:4+flush-179:007:45:141
2340334994541,3cyclictest2362173-21kworker/u8:3+flush-179:007:50:150
2340348994440,3cyclictest2569125-21kworker/u8:2+flush-179:011:00:363
2340348994440,3cyclictest2569125-21kworker/u8:2+flush-179:011:00:363
2340348994440,3cyclictest2569125-21kworker/u8:2+events_unbound11:15:103
2340344994440,3cyclictest2569125-21kworker/u8:2+flush-179:011:15:192
2340344994418,25cyclictest3125627-21ChromeDriver00:55:192
2340339994442,2cyclictest2517262-21kworker/u8:2+flush-179:010:19:101
2340339994442,2cyclictest2433713-21kworker/u8:0+events_unbound09:50:201
2340339994440,3cyclictest2651586-21kworker/u8:4+flush-179:012:30:141
2340339994429,14cyclictest2679012-21diskstats12:35:151
2340334994442,2cyclictest2541457-21kworker/u8:5+events_unbound11:01:500
2340334994442,2cyclictest2541457-21kworker/u8:5+events_unbound11:01:500
2340334994442,1cyclictest2308985-21kworker/u8:4+flush-179:007:40:070
2340334994440,3cyclictest2512143-21kworker/u8:4+flush-179:010:50:290
2340344994339,3cyclictest2541457-21kworker/u8:5+flush-179:011:00:012
2340344994339,3cyclictest2541457-21kworker/u8:5+flush-179:010:43:502
2340344994339,3cyclictest2459764-21kworker/u8:4+flush-179:009:02:142
2340344994339,3cyclictest2387631-21kworker/u8:0+flush-179:008:10:022
2340339994339,3cyclictest2569125-21kworker/u8:2+events_unbound12:21:491
2340334994340,2cyclictest2418450-21kworker/u8:3+flush-179:008:40:320
2340334994339,3cyclictest2438624-21kworker/u8:1+events_unbound08:55:010
2340348994237,4cyclictest2630747-31munin-html11:45:423
2340348994231,10cyclictest76405-21systemd-journal12:04:283
2340344994240,1cyclictest2672062-21kworker/2:1+pm12:31:412
2340344994238,3cyclictest2604879-21kworker/u8:1+flush-179:011:50:282
2340344994236,4cyclictest247560-21ThreadPoolForeg07:25:372
2340339994239,2cyclictest2387631-21kworker/u8:0+flush-179:008:00:221
2340339994239,2cyclictest2361603-21kworker/u8:2+events_unbound08:12:451
2340339994238,3cyclictest2589783-21kworker/u8:0+flush-179:011:15:321
2340339994237,4cyclictest2362173-21kworker/u8:3+events_unbound07:57:521
2340339994229,13cyclictest2308985-21kworker/u8:4+flush-179:007:21:421
2340339994229,13cyclictest2308985-21kworker/u8:4+flush-179:007:21:421
2340339994229,12cyclictest2621461-21kworker/u8:3+flush-179:012:12:401
2340334994240,2cyclictest2433713-21kworker/u8:0+flush-179:009:15:170
2340334994239,2cyclictest2541457-21kworker/u8:5+flush-179:010:28:190
2340334994238,3cyclictest2651586-21kworker/u8:4+flush-179:012:35:150
2340334994238,3cyclictest2636122-21kworker/u8:0+flush-179:012:04:310
2340344994139,1cyclictest2371567-21kworker/2:2+pm07:46:392
2340344994137,3cyclictest2604879-21kworker/u8:1+events_unbound11:25:092
2340344994137,3cyclictest2512143-21kworker/u8:4+flush-179:009:55:202
2340344994136,4cyclictest247560-21ThreadPoolForeg11:55:202
2340344994135,5cyclictest2485756-21kworker/u8:2+flush-179:009:26:502
2340339994138,2cyclictest2564064-21kworker/u8:0+flush-179:010:45:371
2340339994138,2cyclictest2522647-21/usr/share/muni10:05:161
2340339994137,3cyclictest2569125-21kworker/u8:2+flush-179:011:32:161
234033999411,39cyclictest247563-13Compositor10:30:171
2340334994139,2cyclictest2505402-21kworker/u8:1+events_unbound09:55:240
2340334994138,2cyclictest2459764-21kworker/u8:4+events_unbound09:06:450
2340334994138,2cyclictest1-21systemd11:45:020
2340334994136,4cyclictest2574599-21kworker/u8:1+events_unbound10:55:300
2340334994125,5cyclictest3125725-21ThreadPoolForeg11:15:250
234033499410,40cyclictest3125684-21Chrome_DevTools08:08:300
2340348994037,2cyclictest2398141-21kworker/3:2+pm11:33:283
2340348994036,3cyclictest2651586-21kworker/u8:4+flush-179:012:20:403
2340348994036,3cyclictest2361603-21kworker/u8:2+events_unbound08:43:543
2340348994036,2cyclictest2398141-21kworker/3:2+pm10:10:293
2340344994037,2cyclictest2615659-21kworker/2:0+pm11:39:002
2340344994037,2cyclictest2604879-21kworker/u8:1+flush-179:011:40:162
2340344994037,2cyclictest2507130-21kworker/2:3+pm10:11:032
2340344994037,2cyclictest2361603-21kworker/u8:2+flush-179:008:36:592
2340344994036,3cyclictest2362173-21kworker/u8:3+flush-179:008:00:052
2340339994038,2cyclictest2361603-21kworker/u8:2+flush-179:008:36:001
2340339994037,2cyclictest2621461-21kworker/u8:3+flush-179:012:15:251
2340339994036,3cyclictest2541457-21kworker/u8:5+events_unbound10:28:021
2340339994036,3cyclictest2387631-21kworker/u8:0+flush-179:008:15:151
2340339994022,13cyclictest2459764-21kworker/u8:4+flush-179:009:10:121
2340334994038,2cyclictest2387631-21kworker/u8:0+flush-179:008:20:120
2340334994036,3cyclictest2308988-21kworker/u8:5+flush-179:007:15:060
2340334994036,3cyclictest2308988-21kworker/u8:5+flush-179:007:15:060
2340334994027,12cyclictest2308985-21kworker/u8:4+events_unbound07:11:060
234033499400,39cyclictest3125721-21chrome08:35:100
2340348993936,3cyclictest2569125-21kworker/u8:2+flush-179:012:15:133
2340348993935,3cyclictest2506164-21kworker/u8:2+flush-179:009:50:003
2340348993934,4cyclictest2534076-21apt-get10:15:143
2340348993932,5cyclictest3125687-21ThreadPoolForeg12:35:163
2340344993937,1cyclictest2371567-21kworker/2:2+pm07:55:172
2340344993936,2cyclictest2485756-21kworker/u8:2+events_unbound09:35:252
2340344993936,2cyclictest2371567-21kworker/2:2+pm08:25:052
2340344993936,2cyclictest2371567-21kworker/2:2+pm08:20:062
2340344993936,2cyclictest2362173-21kworker/u8:3+events_unbound07:41:122
2340344993936,2cyclictest2328206-21kworker/2:0+pm07:10:072
2340344993935,3cyclictest2433713-21kworker/u8:0+flush-179:009:54:442
2340339993937,2cyclictest2564064-21kworker/u8:0+flush-179:010:56:391
2340339993936,2cyclictest2621461-21kworker/u8:3+events_unbound11:50:131
2340339993936,2cyclictest2541457-21kworker/u8:5+flush-179:010:35:311
2340339993936,2cyclictest2505402-21kworker/u8:1+flush-179:009:58:031
2340339993936,2cyclictest2308985-21kworker/u8:4+flush-179:007:30:141
2340339993935,3cyclictest2480526-21kworker/u8:3+events_unbound09:34:301
2340334993934,4cyclictest2604879-21kworker/u8:1+flush-179:011:30:340
2340348993836,1cyclictest2356690-21kworker/3:1+pm07:54:533
2340348993835,2cyclictest2604879-21kworker/u8:1+events_unbound11:25:193
2340348993834,3cyclictest2512143-21kworker/u8:4+flush-179:010:54:103
2340348993834,3cyclictest2362173-21kworker/u8:3+flush-179:007:55:243
2340348993833,3cyclictest2362173-21kworker/u8:3+flush-179:007:40:173
2340344993836,1cyclictest2672062-21kworker/2:1+pm12:35:522
2340344993836,1cyclictest2599760-21kworker/2:1+pm11:24:332
2340344993836,1cyclictest2344984-21kworker/2:1+pm07:36:492
2340344993836,1cyclictest2344984-21kworker/2:1+pm07:21:042
2340344993836,1cyclictest2344984-21kworker/2:1+pm07:21:042
2340344993835,2cyclictest2507130-21kworker/2:3+pm11:10:582
2340344993835,2cyclictest2507130-21kworker/2:3+pm10:35:022
2340339993835,2cyclictest2480526-21kworker/u8:3+events_unbound09:35:151
2340339993835,2cyclictest2361603-21kworker/u8:2+events_unbound08:25:331
2340334993836,1cyclictest2646506-21kworker/0:0+pm12:18:020
2340334993835,2cyclictest2621461-21kworker/u8:3+flush-179:011:55:000
2340334993834,3cyclictest2531983-21kworker/u8:0+events_unbound10:18:370
2340334993834,3cyclictest2351958-21kworker/u8:1+flush-179:007:30:540
2340334993831,5cyclictest2662362-21/usr/share/muni12:20:140
2340348993735,1cyclictest2398141-21kworker/3:2+pm11:22:493
2340348993735,1cyclictest2398141-21kworker/3:2+pm10:01:553
2340348993735,1cyclictest2398141-21kworker/3:2+pm09:04:433
2340348993734,2cyclictest2263271-1kworker/3:0H+kblockd08:27:293
2340348993734,1cyclictest2263271-1kworker/3:0H+kblockd08:56:013
2340348993732,3cyclictest2485756-21kworker/u8:2+flush-179:009:30:153
2340344993734,2cyclictest2517262-21kworker/u8:2+flush-179:010:18:102
2340344993734,2cyclictest2387631-21kworker/u8:0+flush-179:008:30:052
2340344993733,3cyclictest2574599-21kworker/u8:1+flush-179:011:03:142
2340344993733,3cyclictest2574599-21kworker/u8:1+flush-179:011:03:142
2340334993733,3cyclictest2541457-21kworker/u8:5+flush-179:010:40:180
2340334993733,3cyclictest2362173-21kworker/u8:3+flush-179:007:55:200
2340334993732,4cyclictest2387631-21kworker/u8:0+flush-179:008:15:470
2340348993633,2cyclictest2263271-1kworker/3:0H+kblockd10:09:353
2340348993633,2cyclictest2263271-1kworker/3:0H+kblockd07:35:013
2340348993632,3cyclictest2651586-21kworker/u8:4+flush-179:012:25:173
2340348993632,3cyclictest2594897-21kworker/u8:3+flush-179:011:14:263
2340348993632,3cyclictest247516-21Chrome_ChildIOT09:06:493
2340348993632,3cyclictest2459764-21kworker/u8:4+flush-179:009:15:233
2340348993632,2cyclictest2356690-21kworker/3:1+pm07:39:403
2340348993630,4cyclictest2480526-21kworker/u8:3+flush-179:009:40:303
2340348993626,9cyclictest247515-21ThreadPoolForeg11:55:343
2340339993633,2cyclictest2480516-21kworker/u8:1+flush-179:009:25:201
2340334993633,2cyclictest2569125-21kworker/u8:2+flush-179:011:35:320
2340334993633,2cyclictest2393255-1kworker/0:0H+kblockd11:21:160
2340334993633,2cyclictest2393255-1kworker/0:0H+kblockd08:30:330
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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