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2025-12-16 - 19:52
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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 Tue Dec 16, 2025 12:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25952512214184,22sleep00-21swapper/007:07:190
25953352209180,19sleep30-21swapper/307:08:273
25953952205181,14sleep10-21swapper/107:09:141
25954322200177,14sleep20-21swapper/207:09:422
2595681991002,96cyclictest2632651-21chrome07:45:022
2595685996965,3cyclictest2839462-21kworker/u8:1+flush-179:011:10:143
2595685996961,6cyclictest247516-21Chrome_ChildIOT08:00:283
2595675996763,3cyclictest2616787-21kworker/u8:0+events_unbound09:35:280
2595675996763,3cyclictest2616787-21kworker/u8:0+events_unbound09:35:280
259568199666,18cyclictest1253-21openvpn10:45:022
2595685996358,3cyclictest2616787-21kworker/u8:0+flush-179:009:05:133
2595681996325,37cyclictest2864958-21kworker/u8:5+flush-179:011:45:202
2595685996258,3cyclictest2715078-21kworker/u8:2+flush-179:010:20:123
2595685996258,3cyclictest2715078-21kworker/u8:2+events_unbound09:13:383
2595679996146,11cyclictest2539516-21kworker/u8:5+flush-179:007:25:061
2595675996045,14cyclictest2595192-21kworker/u8:2+flush-179:007:45:330
2595685995955,3cyclictest2777740-21kworker/u8:3+flush-179:010:10:133
2595681995954,4cyclictest2855082-21kworker/u8:2+events_unbound12:09:592
2595681995954,3cyclictest2616787-21kworker/u8:0+events_unbound08:40:012
2595675995955,3cyclictest2616787-21kworker/u8:0+events_unbound08:45:000
2595685995754,2cyclictest2802934-21kworker/u8:4+events_unbound11:15:123
2595675995753,3cyclictest2777740-21kworker/u8:3+flush-179:011:55:190
2595675995652,3cyclictest2637417-21kworker/u8:3+flush-179:008:00:000
2595685995552,2cyclictest2864958-21kworker/u8:5+events_unbound11:35:103
2595685995551,3cyclictest2777740-21kworker/u8:3+flush-179:012:30:343
2595675995551,3cyclictest2855082-21kworker/u8:2+flush-179:011:45:000
2595675995551,3cyclictest2668323-21kworker/u8:1+flush-179:010:10:330
2595685995450,3cyclictest3125725-21ThreadPoolForeg07:45:013
2595681995448,5cyclictest247561-21ThreadPoolForeg11:10:182
2595681995446,3cyclictest2616787-21kworker/u8:0+events_unbound08:05:132
2595675995448,4cyclictest2736936-21/usr/share/muni09:25:060
2595685995348,4cyclictest2820959-21ntpq10:45:173
2595681995338,14cyclictest2637417-21kworker/u8:3+flush-179:008:00:212
2595679995346,6cyclictest2715078-21kworker/u8:2+flush-179:010:15:111
2595675995350,2cyclictest247557-21chrome10:59:220
259567599533,47cyclictest2819368-21chrome10:45:010
2595685995249,2cyclictest2891432-21kworker/u8:0+flush-179:012:10:183
2595685995249,2cyclictest2891432-21kworker/u8:0+flush-179:012:10:183
2595685995248,3cyclictest2637417-21kworker/u8:3+flush-179:008:10:333
2595681995248,3cyclictest2668323-21kworker/u8:1+events_unbound08:30:082
2595681995245,6cyclictest247516-21Chrome_ChildIOT09:00:142
2595675995248,3cyclictest2802934-21kworker/u8:4+flush-179:011:15:120
2595675995247,4cyclictest3125687-21ThreadPoolForeg09:15:160
2595675995247,4cyclictest2813226-21munin-limits10:35:350
2595685995145,3cyclictest2802934-21kworker/u8:4+flush-179:010:35:013
2595681995145,2cyclictest2637416-21kworker/u8:1+events_unbound07:50:132
2595681995142,2cyclictest2802934-21kworker/u8:4+events_unbound10:30:232
2595679995146,4cyclictest2916729-31munin-html12:15:341
2595679995137,5cyclictest2793695-21/usr/share/muni10:20:131
2595675995147,3cyclictest2668323-21kworker/u8:1+flush-179:010:25:280
2595681995047,3cyclictest2616787-21kworker/u8:0+events_unbound09:25:362
2595681995047,2cyclictest2715078-21kworker/u8:2+events_unbound09:50:152
2595681995046,3cyclictest2865872-21/usr/share/muni11:30:132
2595675995047,2cyclictest2595192-21kworker/u8:2+flush-179:008:18:030
2595675995046,3cyclictest2762999-21kworker/u8:4+flush-179:009:50:320
2595675995046,3cyclictest2762999-21kworker/u8:4+events_unbound10:05:190
2595675995046,3cyclictest2637417-21kworker/u8:3+flush-179:008:00:310
2595685994945,3cyclictest2715078-21kworker/u8:2+flush-179:009:50:333
2595685994945,3cyclictest2616787-21kworker/u8:0+flush-179:008:40:053
2595685994945,3cyclictest2590096-21kworker/u8:1+flush-179:007:20:263
2595681994945,3cyclictest2616787-21kworker/u8:0+events_unbound09:12:112
2595679994942,5cyclictest2859523-21munin-limits11:20:341
2595681994845,2cyclictest2668323-21kworker/u8:1+events_unbound10:10:312
2595681994844,3cyclictest2829232-21kworker/u8:0+events_unbound10:55:372
2595679994842,5cyclictest2802934-21kworker/u8:4+flush-179:011:10:101
2595679994841,5cyclictest2875955-21latency_hist11:40:001
2595675994844,3cyclictest2870616-21kworker/u8:1+flush-179:011:50:160
2595675994844,3cyclictest2701841-21kworker/u8:5+events_unbound08:55:310
259567599480,47cyclictest247450-13chrome09:10:010
2595685994744,2cyclictest2616787-21kworker/u8:0+flush-179:009:30:243
2595679994740,4cyclictest2772732-21cat10:00:021
2595675994744,2cyclictest2891432-21kworker/u8:0+events_unbound12:15:010
2595675994744,2cyclictest2891432-21kworker/u8:0+events_unbound12:15:010
2595675994744,2cyclictest2802934-21kworker/u8:4+flush-179:011:10:340
2595675994744,2cyclictest2777740-21kworker/u8:3+events_unbound12:05:200
2595675994743,3cyclictest2777740-21kworker/u8:3+events_unbound12:15:090
2595675994743,3cyclictest2701841-21kworker/u8:5+flush-179:009:20:170
2595675994742,3cyclictest2891432-21kworker/u8:0+events_unbound12:25:300
2595685994643,2cyclictest2802934-21kworker/u8:4+flush-179:011:05:373
2595685994643,2cyclictest2616787-21kworker/u8:0+flush-179:007:40:333
2595685994642,3cyclictest2688994-21kworker/u8:3+flush-179:008:45:333
2595685994640,5cyclictest247560-21ThreadPoolForeg09:20:193
2595685994640,4cyclictest3125724-21ThreadPoolForeg10:25:363
2595685994640,2cyclictest2595192-21kworker/u8:2+flush-179:008:20:263
2595681994643,2cyclictest2715078-21kworker/u8:2+events_unbound10:15:292
2595681994641,2cyclictest2688994-21kworker/u8:3+flush-179:008:45:202
2595679994634,1cyclictest2647831-1kworker/1:2H+kblockd11:29:431
2595679994628,16cyclictest2752244-21/usr/share/muni09:40:181
2595675994643,2cyclictest2595192-21kworker/u8:2+events_unbound07:55:000
2595675994640,2cyclictest2701841-21kworker/u8:5+flush-179:009:00:260
2595685994542,2cyclictest2864958-21kworker/u8:5+flush-179:011:30:133
2595685994542,2cyclictest2637417-21kworker/u8:3+flush-179:008:15:323
2595685994540,4cyclictest2616787-21kworker/u8:0+flush-179:007:35:223
2595685994538,3cyclictest2616787-21kworker/u8:0+flush-179:009:45:123
2595685994531,13cyclictest2715078-21kworker/u8:2+flush-179:009:41:283
2595681994542,2cyclictest2777740-21kworker/u8:3+flush-179:010:50:132
2595681994542,2cyclictest2777740-21kworker/u8:3+events_unbound11:35:222
2595681994542,2cyclictest2715078-21kworker/u8:2+events_unbound10:20:512
2595681994542,2cyclictest2668703-21kworker/u8:4+flush-179:008:23:052
2595681994542,2cyclictest2616787-21kworker/u8:0+flush-179:009:15:172
2595681994541,3cyclictest2844805-21latency_hist11:10:002
2595681994540,4cyclictest2608617-21ntpq07:20:162
2595681994538,5cyclictest3125688-21Chrome_ChildIOT11:56:302
2595679994541,3cyclictest2870616-21kworker/u8:1+flush-179:011:59:451
2595675994542,2cyclictest2891432-21kworker/u8:0+flush-179:012:00:130
2595675994542,2cyclictest2595192-21kworker/u8:2+events_unbound08:25:090
2595675994541,3cyclictest2715078-21kworker/u8:2+flush-179:010:20:160
2595675994541,3cyclictest2668323-21kworker/u8:1+flush-179:008:35:320
2595675994538,6cyclictest3125725-21ThreadPoolForeg09:55:260
2595675994537,6cyclictest2156079-21apache207:30:190
2595675994530,14cyclictest2595192-21kworker/u8:2+flush-179:007:10:110
2595685994441,3cyclictest2715078-21kworker/u8:2+flush-179:010:00:173
2595685994441,3cyclictest2600401-21kworker/u8:3+events_unbound07:14:413
2595685994441,2cyclictest2757496-1kworker/3:1H+kblockd11:58:443
2595685994441,2cyclictest2616787-21kworker/u8:0+events_unbound09:00:293
2595685994440,3cyclictest2864958-21kworker/u8:5+flush-179:011:50:253
2595685994440,3cyclictest2787707-21kworker/u8:0+flush-179:010:40:043
2595685994440,3cyclictest2668323-21kworker/u8:1+events_unbound10:09:543
2595685994440,3cyclictest2616787-21kworker/u8:0+flush-179:008:35:153
2595685994440,3cyclictest2590096-21kworker/u8:1+flush-179:007:25:163
2595685994439,3cyclictest2701841-21kworker/u8:5+flush-179:008:56:413
2595685994437,6cyclictest2777740-21kworker/u8:3+events_unbound10:59:223
2595681994442,2cyclictest2595192-21kworker/u8:2+flush-179:007:41:372
2595681994441,2cyclictest2849529-21kworker/u8:0+events_unbound11:15:372
2595681994441,2cyclictest2701841-21kworker/u8:5+events_unbound09:20:292
2595681994440,3cyclictest2870616-21kworker/u8:1+flush-179:012:25:212
2595681994431,13cyclictest2715078-21kworker/u8:2+events_unbound10:07:472
2595679994438,4cyclictest2647891-21munin-update08:00:351
2595679994435,8cyclictest2746117-21munin-limits09:30:351
2595675994441,2cyclictest2870616-21kworker/u8:1+events_unbound12:35:300
2595675994438,3cyclictest2595192-21kworker/u8:2+events_unbound07:19:150
2595685994340,2cyclictest2855082-21kworker/u8:2+flush-179:011:45:213
2595685994339,3cyclictest2595192-21kworker/u8:2+flush-179:008:05:313
2595685994338,4cyclictest2891432-21kworker/u8:0+flush-179:012:25:273
2595685994338,4cyclictest2668323-21kworker/u8:1+flush-179:009:25:363
2595685994338,4cyclictest2668323-21kworker/u8:1+flush-179:008:25:273
2595681994340,2cyclictest2715078-21kworker/u8:2+events_unbound10:01:592
2595681994335,2cyclictest2870616-21kworker/u8:1+events_unbound11:40:482
2595675994339,3cyclictest2829232-21kworker/u8:0+events_unbound11:00:210
2595675994339,3cyclictest2715078-21kworker/u8:2+events_unbound09:10:190
2595675994339,3cyclictest2668323-21kworker/u8:1+flush-179:009:40:330
2595675994339,3cyclictest2539516-21kworker/u8:5+events_unbound07:44:450
2595675994339,2cyclictest2855082-21kworker/u8:2+events_unbound11:25:310
2595675994336,5cyclictest2855143-21munin-update11:20:170
259567599430,41cyclictest3125721-21chrome08:45:330
2595685994239,2cyclictest2668323-21kworker/u8:1+events_unbound08:30:163
2595685994238,3cyclictest2777740-21kworker/u8:3+flush-179:012:05:263
2595681994240,2cyclictest2539516-21kworker/u8:5+events_unbound07:35:332
2595681994236,2cyclictest2777740-21kworker/u8:3+events_unbound11:01:552
2595681994231,10cyclictest2933029-21kworker/2:2+pm12:35:052
2595679994233,7cyclictest2746697-21kworker/1:2+pm11:54:331
2595679994220,20cyclictest247515-21ThreadPoolForeg07:15:351
2595675994239,2cyclictest2762999-21kworker/u8:4+flush-179:010:00:230
2595675994238,3cyclictest2864958-21kworker/u8:5+events_unbound11:45:180
2595675994237,3cyclictest2891432-21kworker/u8:0+events_unbound12:30:210
2595675994237,2cyclictest2637417-21kworker/u8:3+flush-179:008:10:180
2595675994236,2cyclictest2777740-21kworker/u8:3+flush-179:011:39:280
2595685994138,2cyclictest2870616-21kworker/u8:1+flush-179:012:01:233
2595685994138,2cyclictest2829232-21kworker/u8:0+flush-179:011:00:173
2595685994137,3cyclictest2762999-21kworker/u8:4+events_unbound09:55:093
2595685994137,3cyclictest2595192-21kworker/u8:2+events_unbound07:50:283
2595685994134,3cyclictest2616787-21kworker/u8:0+flush-179:009:15:113
2595681994138,2cyclictest2715078-21kworker/u8:2+events_unbound09:07:042
2595681994138,2cyclictest2668323-21kworker/u8:1+events_unbound09:40:132
2595681994137,3cyclictest2891432-21kworker/u8:0+events_unbound12:10:132
2595681994137,3cyclictest2891432-21kworker/u8:0+events_unbound12:10:132
2595681994137,3cyclictest2818738-21kworker/u8:2+events_unbound10:41:242
2595681994135,5cyclictest247560-21ThreadPoolForeg11:22:182
2595681994133,2cyclictest2802934-21kworker/u8:4+events_unbound10:35:132
2595679994137,3cyclictest247563-13Compositor10:34:361
2595679994135,5cyclictest2746697-21kworker/1:2+pm11:47:491
2595679994126,13cyclictest2757363-13chrome09:45:021
2595675994138,2cyclictest2595192-21kworker/u8:2+flush-179:007:23:520
2595675994137,3cyclictest2839462-21kworker/u8:1+flush-179:011:05:300
2595675994137,3cyclictest2802934-21kworker/u8:4+flush-179:010:42:080
2595675994137,3cyclictest2777740-21kworker/u8:3+flush-179:012:20:160
2595675994137,3cyclictest2715078-21kworker/u8:2+flush-179:010:15:290
2595675994136,4cyclictest2668323-21kworker/u8:1+flush-179:009:47:410
2595685994037,2cyclictest2855082-21kworker/u8:2+flush-179:011:20:283
2595685994037,2cyclictest2616787-21kworker/u8:0+flush-179:007:55:183
2595685994036,3cyclictest2870616-21kworker/u8:1+events_unbound11:40:173
2595685994036,3cyclictest2595192-21kworker/u8:2+flush-179:008:51:203
2595685994035,2cyclictest2600401-21kworker/u8:3+flush-179:007:15:073
2595681994038,1cyclictest2870376-21kworker/2:1+pm11:53:502
2595681994038,1cyclictest2751634-21kworker/2:1+pm10:25:282
2595681994037,2cyclictest2870376-21kworker/2:1+pm12:03:252
2595681994034,5cyclictest247515-21ThreadPoolForeg07:10:182
2595679994035,3cyclictest2647831-1kworker/1:2H+kblockd12:35:501
2595679994033,5cyclictest2705410-21/usr/share/muni08:55:031
2595679994032,5cyclictest2617237-21/usr/share/muni07:30:011
2595679994031,7cyclictest2679581-21ntpq08:30:061
2595679994029,10cyclictest1260-21snmpd09:35:211
2595679994029,10cyclictest1260-21snmpd09:35:211
2595679994028,11cyclictest2829734-21/usr/share/muni10:55:051
2595675994037,2cyclictest2668323-21kworker/u8:1+events_unbound10:30:250
2595675994037,2cyclictest2616787-21kworker/u8:0+flush-179:008:33:130
2595675994036,3cyclictest2668323-21kworker/u8:1+flush-179:008:20:160
2595685993935,3cyclictest2891432-21kworker/u8:0+flush-179:012:20:293
2595685993935,3cyclictest2777740-21kworker/u8:3+flush-179:012:39:583
2595685993935,3cyclictest2539516-21kworker/u8:5+flush-179:007:30:493
2595681993937,2cyclictest2595192-21kworker/u8:2+events_unbound07:34:492
2595681993937,1cyclictest2751634-21kworker/2:1+pm09:46:492
2595681993937,1cyclictest2668843-21kworker/2:1+pm08:41:432
2595681993937,1cyclictest2539836-21kworker/2:0+pm07:26:582
2595681993936,3cyclictest2637417-21kworker/u8:3+events_unbound08:15:202
2595681993936,2cyclictest2870376-21kworker/2:1+pm12:15:112
2595681993936,2cyclictest2855192-21kworker/2:3+pm11:26:472
2595681993936,2cyclictest2668843-21kworker/2:1+pm08:29:202
2595681993934,4cyclictest2705404-21/usr/share/muni08:55:052
2595679993935,3cyclictest2829232-21kworker/u8:0+flush-179:011:00:101
2595679993935,2cyclictest2647831-1kworker/1:2H+kblockd08:41:001
2595679993934,4cyclictest2891432-21kworker/u8:0+flush-179:012:23:121
2595679993933,4cyclictest2685856-21ntpq08:35:151
2595679993928,2cyclictest1260-21snmpd09:08:511
2595679993913,25cyclictest2824799-21apache_accesses10:50:041
2595675993936,3cyclictest2715078-21kworker/u8:2+flush-179:009:30:350
2595675993936,2cyclictest2566324-21kworker/0:1+pm08:08:270
2595675993934,4cyclictest2777740-21kworker/u8:3+flush-179:011:30:550
26272242380,3chrt2627225-21idleruntime-cro07:39:591
2595685993834,3cyclictest2870616-21kworker/u8:1+flush-179:012:16:113
2595681993836,1cyclictest2751634-21kworker/2:1+pm09:55:152
2595681993836,1cyclictest2745998-21kworker/2:2+pm09:32:512
2595681993836,1cyclictest2668843-21kworker/2:1+pm08:51:422
2595681993836,1cyclictest2539836-21kworker/2:0+pm08:11:172
2595681993835,2cyclictest2870376-21kworker/2:1+pm12:21:012
2595681993835,2cyclictest2777740-21kworker/u8:3+events_unbound12:30:282
2595681993835,2cyclictest2539516-21kworker/u8:5+flush-179:007:15:532
2595679993835,2cyclictest2545113-21kworker/1:0+pm07:11:381
2595679993834,2cyclictest2647831-1kworker/1:2H+kblockd08:14:101
2595679993833,3cyclictest2647831-1kworker/1:2H+kblockd11:18:421
2595679993832,4cyclictest2865886-21/usr/share/muni11:30:021
2595679993831,5cyclictest2741865-21/usr/share/muni09:30:021
2595679993828,1cyclictest1260-21snmpd09:54:311
2595679993826,11cyclictest2762999-21kworker/u8:4+flush-179:010:00:141
2595675993835,2cyclictest2539516-21kworker/u8:5+events_unbound07:25:230
2595685993734,2cyclictest2668323-21kworker/u8:1+flush-179:009:38:323
2595685993734,2cyclictest2668323-21kworker/u8:1+flush-179:009:38:323
2595685993733,3cyclictest2777740-21kworker/u8:3+flush-179:010:50:173
2595685993733,3cyclictest2715078-21kworker/u8:2+flush-179:010:15:283
2595681993735,2cyclictest2595192-21kworker/u8:2+events_unbound07:55:102
2595681993734,2cyclictest2751634-21kworker/2:1+pm09:38:112
2595681993734,2cyclictest2751634-21kworker/2:1+pm09:38:112
2595679993734,2cyclictest2647831-1kworker/1:2H+kblockd10:37:041
2595679993734,2cyclictest2647831-1kworker/1:2H+kblockd09:23:101
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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