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2025-07-12 - 12:59
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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 100 highest latencies:
System rackbslot1.osadl.org (updated Fri Jul 11, 2025 12:44:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25738352229200,19sleep10-21swapper/107:08:101
25737962213185,18sleep00-21swapper/007:07:390
25738222205176,19sleep30-21swapper/307:07:583
25737562205182,13sleep20-21swapper/207:07:092
28490252640,1chrt2849020-21/usr/share/muni11:35:022
2574178996310,52cyclictest2683774-21kworker/u8:0+efi_rts_wq09:00:022
257417899620,2cyclictest2673975-21/usr/share/muni08:45:022
257417599624,57cyclictest2683774-21kworker/u8:0+efi_rts_wq09:00:030
2574178996138,2cyclictest2735886-21chrome09:45:022
2574176995956,2cyclictest2714091-21kworker/u8:2+events_unbound11:15:291
2574176995956,2cyclictest2674007-21snmp_ryswitch.c08:45:011
2574176995648,3cyclictest2836861-21kworker/u8:1+events_unbound11:30:301
2574175995249,3cyclictest2642400-21kworker/u8:1+flush-179:008:45:150
2574175995249,2cyclictest2683774-21kworker/u8:0+events_unbound08:55:090
2574175995249,2cyclictest2611572-21/usr/share/muni07:45:010
2574176995147,3cyclictest2836861-21kworker/u8:1+events_unbound11:55:001
257418199504,45cyclictest2683774-21kworker/u8:0+efi_rts_wq09:00:033
2574181994934,14cyclictest2859748-21awk11:45:013
2574176994943,4cyclictest2813148-21/usr/share/muni11:00:101
2574175994943,5cyclictest2756248-21latency_hist10:05:000
257417599481,45cyclictest40654-21chrome12:00:010
2574178994735,11cyclictest2553425-21kworker/2:1+pm07:54:122
2574175994743,3cyclictest2836861-21kworker/u8:1+flush-179:011:45:310
2574176994643,2cyclictest2657674-21kworker/u8:4+events_unbound10:45:201
26117572450,1sleep12611724-21snmp_wlanswitch07:45:041
2574175994541,3cyclictest2836861-21kworker/u8:1+flush-179:011:40:260
2574175994541,3cyclictest2636720-21kworker/u8:3+flush-179:008:15:150
2574175994540,4cyclictest2657674-21kworker/u8:4+flush-179:009:15:060
2574181994430,13cyclictest2558937-1kworker/3:1H+kblockd07:27:563
2574176994441,2cyclictest2714091-21kworker/u8:2+events_unbound11:00:011
2574175994441,2cyclictest2720398-21kworker/u8:1+flush-179:009:45:320
2574175994440,3cyclictest2714091-21kworker/u8:2+flush-179:010:20:290
2574178994341,1cyclictest1412658-1kworker/2:0H+kblockd11:07:522
2574178994341,1cyclictest1412658-1kworker/2:0H+kblockd10:21:342
2574178994340,2cyclictest1412658-1kworker/2:0H+kblockd11:21:252
2574176994340,2cyclictest2621738-21kworker/u8:2+events_unbound08:10:131
2574175994340,2cyclictest2797609-21chrome10:45:010
2574175994340,2cyclictest2584958-21kworker/u8:0+flush-179:007:30:100
2574175994339,3cyclictest2836862-21kworker/u8:3+events_unbound11:30:000
2574178994235,1cyclictest2553425-21kworker/2:1+pm08:18:422
2574178994233,8cyclictest2703864-21kworker/2:2+pm09:25:152
2574178994233,8cyclictest2703864-21kworker/2:2+pm09:25:152
2574176994240,2cyclictest2657674-21kworker/u8:4+events_unbound09:55:311
2574176994238,3cyclictest2874982-21kworker/u8:2+flush-179:012:00:081
2574176994238,3cyclictest2863997-21kworker/u8:3+events_unbound12:28:221
2574175994236,4cyclictest2616677-21/usr/share/muni07:50:100
2574181994134,4cyclictest2558937-1kworker/3:1H+kblockd11:15:323
2574178994139,1cyclictest2668217-21kworker/2:0+pm08:51:052
2574178994137,3cyclictest2843846-21/usr/share/muni11:30:162
257417899411,15cyclictest40654-21chrome09:50:552
2574176994139,1cyclictest2755955-1kworker/1:2H+kblockd11:11:111
2574176994138,2cyclictest2836862-21kworker/u8:3+events_unbound11:28:231
2574176994127,13cyclictest2657674-21kworker/u8:4+events_unbound10:24:581
2574175994139,2cyclictest2657674-21kworker/u8:4+events_unbound10:40:140
2574175994139,2cyclictest2657674-21kworker/u8:4+events_unbound10:40:140
2574175994138,2cyclictest2584958-21kworker/u8:0+events_unbound07:25:100
2574181994037,2cyclictest2802724-21kworker/3:1+pm10:54:553
2574181994037,2cyclictest2558937-1kworker/3:1H+kblockd07:47:513
2574178994036,2cyclictest2885247-21kworker/2:0+pm12:19:162
2574178994035,3cyclictest40654-21chrome11:01:222
2574176994037,2cyclictest2836862-21kworker/u8:3+events_unbound11:37:541
2574176994037,2cyclictest2568149-21kworker/u8:3+flush-179:007:20:011
2574176994032,2cyclictest2548618-1kworker/1:1H+kblockd09:46:331
2574175994036,3cyclictest2714091-21kworker/u8:2+flush-179:011:15:200
2574175994034,2cyclictest2827908-21kworker/u8:4+flush-179:011:20:080
2574181993934,3cyclictest2797606-21CacheThread_Blo10:45:013
2574181993934,3cyclictest2797606-21CacheThread_Blo10:45:013
2574178993937,1cyclictest2885247-21kworker/2:0+pm12:23:262
2574178993937,1cyclictest2755931-21kworker/2:1+pm10:56:312
2574178993937,1cyclictest2703864-21kworker/2:2+pm10:03:422
2574178993937,1cyclictest2668217-21kworker/2:0+pm09:05:592
2574178993937,1cyclictest2668217-21kworker/2:0+pm08:42:372
2574178993937,1cyclictest2668217-21kworker/2:0+pm08:42:372
2574178993936,2cyclictest2838307-21kworker/2:2+pm11:25:402
2574178993936,2cyclictest2755931-21kworker/2:1+pm10:51:102
2574178993936,2cyclictest2703864-21kworker/2:2+pm09:47:172
2574178993936,1cyclictest2755931-21kworker/2:1+pm10:19:122
2574178993935,3cyclictest2685561-21ntpq08:55:122
2574178993933,1cyclictest1412658-1kworker/2:0H+kblockd08:30:562
257417899391,12cyclictest351rcuc/209:16:062
2574176993937,2cyclictest2657674-21kworker/u8:4+events_unbound09:17:011
2574176993936,2cyclictest2657674-21kworker/u8:4+events_unbound09:42:181
2574176993935,3cyclictest2896020-21/usr/share/muni12:20:151
2574175993936,2cyclictest2714091-21kworker/u8:2+events_unbound10:35:280
2574175993935,2cyclictest105470-21isc-net-000008:30:550
2574175993934,3cyclictest2668270-21kworker/u8:2+events_unbound08:40:330
2574175993934,3cyclictest2668270-21kworker/u8:2+events_unbound08:40:330
257417599390,38cyclictest40654-21chrome08:25:080
2574181993836,1cyclictest2730167-21kworker/3:0+pm10:37:163
2574181993834,3cyclictest2558937-1kworker/3:1H+kblockd08:30:273
2574181993830,7cyclictest2558937-1kworker/3:1H+kblockd11:10:303
2574181993830,7cyclictest1260-21snmpd09:10:203
2574178993837,1cyclictest2755931-21kworker/2:1+pm10:36:182
2574178993837,1cyclictest2703864-21kworker/2:2+pm09:56:142
2574178993836,1cyclictest2838307-21kworker/2:2+pm12:09:492
2574178993836,1cyclictest2838307-21kworker/2:2+pm11:46:292
2574178993836,1cyclictest2827537-21kworker/2:0+pm11:17:142
2574178993836,1cyclictest2827537-21kworker/2:0+pm11:12:222
2574178993836,1cyclictest2755931-21kworker/2:1+pm10:45:322
2574178993836,1cyclictest2755931-21kworker/2:1+pm10:05:222
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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