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2025-12-02 - 06:35
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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 Mon Dec 01, 2025 12:44:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13504262218175,32sleep00-21swapper/007:09:070
13504812216189,17sleep30-21swapper/307:09:433
13502012207183,15sleep10-21swapper/107:06:201
13501922193169,14sleep20-21swapper/207:06:132
143910721110,1sleep01439109-21cron08:35:000
1350708996458,5cyclictest1648311-21/usr/share/muni11:55:122
1350705996147,13cyclictest1486307-21kworker/u8:2+flush-179:010:05:371
1350705996147,13cyclictest1486307-21kworker/u8:2+flush-179:010:05:371
1350705996056,3cyclictest1423558-21kworker/u8:1+flush-179:008:45:261
1350705995956,2cyclictest1637551-21kworker/u8:2+events_unbound11:50:391
1350713995852,5cyclictest76405-21systemd-journal08:00:003
1350708995854,3cyclictest1595671-21kworker/u8:4+flush-179:011:35:322
1350705995852,2cyclictest1595671-21kworker/u8:4+events_unbound11:10:301
1350708995752,4cyclictest1689634-21/usr/share/muni12:35:092
1350708995749,2cyclictest1595671-21kworker/u8:4+flush-179:011:15:222
1350708995653,2cyclictest1486307-21kworker/u8:2+events_unbound10:08:202
1350708995653,2cyclictest1486307-21kworker/u8:2+events_unbound10:08:202
1350708995653,2cyclictest1339674-21kworker/u8:5+flush-179:009:30:122
135071399559,45cyclictest1528119-21kworker/u8:1+efi_rts_wq10:08:223
135071399559,45cyclictest1528119-21kworker/u8:1+efi_rts_wq10:08:223
1350713995551,3cyclictest1324357-21kworker/u8:2+flush-179:007:35:213
1350705995552,2cyclictest1372227-21kworker/u8:0+flush-179:008:10:271
1350713995449,4cyclictest1448998-31munin-html08:40:353
1350708995450,3cyclictest1528119-21kworker/u8:1+events_unbound10:40:392
1350708995448,2cyclictest1408057-21kworker/u8:6+flush-179:008:10:212
1350708995350,2cyclictest1367057-21kworker/u8:3+flush-179:007:25:372
1350705995350,2cyclictest1637551-21kworker/u8:2+events_unbound12:00:111
1350705995348,4cyclictest1539223-21/usr/share/muni10:10:041
1350703995350,2cyclictest1595671-21kworker/u8:4+flush-179:011:35:150
1350703995349,3cyclictest1454674-21kworker/u8:0+events_unbound10:30:330
1350708995249,2cyclictest1621635-21kworker/u8:0+flush-179:011:45:302
1350705995249,2cyclictest1498944-21kworker/u8:3+flush-179:010:15:301
1350705995248,3cyclictest1605812-21kworker/u8:2+flush-179:011:20:191
1350713995146,3cyclictest1528424-21munin-update10:00:153
1350708995149,2cyclictest1339674-21kworker/u8:5+flush-179:008:30:272
1350708995148,2cyclictest1423558-21kworker/u8:1+events_unbound08:35:242
1350705995148,2cyclictest1528119-21kworker/u8:1+flush-179:010:25:301
1350703995147,3cyclictest1454674-21kworker/u8:0+flush-179:009:50:000
1350713995044,4cyclictest1580862-21/usr/share/muni10:50:163
1350708995047,2cyclictest1528119-21kworker/u8:1+events_unbound10:35:312
1350708995047,2cyclictest1528119-21kworker/u8:1+events_unbound10:35:312
1350708995047,2cyclictest1465854-21kworker/u8:1+flush-179:009:25:152
1350708995046,3cyclictest1339674-21kworker/u8:5+flush-179:007:55:212
1350708994945,3cyclictest1454674-21kworker/u8:0+flush-179:010:15:102
1350705994946,2cyclictest1595671-21kworker/u8:4+events_unbound11:45:341
1350703994945,3cyclictest1362233-21latency_hist07:20:010
1350708994845,2cyclictest1498944-21kworker/u8:3+flush-179:009:52:042
1350708994845,2cyclictest1339674-21kworker/u8:5+flush-179:007:42:262
1350708994844,3cyclictest1498944-21kworker/u8:3+flush-179:009:35:022
1350708994844,3cyclictest1372227-21kworker/u8:0+flush-179:007:35:282
1350708994843,4cyclictest247560-21ThreadPoolForeg09:05:092
1350705994844,3cyclictest1518463-21/usr/share/muni09:50:191
1350705994833,14cyclictest1339674-21kworker/u8:5+events_unbound09:03:191
1350703994844,3cyclictest1605812-21kworker/u8:2+flush-179:011:25:060
1350713994743,3cyclictest1528119-21kworker/u8:1+flush-179:010:30:293
1350708994743,3cyclictest1454674-21kworker/u8:0+flush-179:009:55:022
1350708994742,4cyclictest1324357-21kworker/u8:2+flush-179:007:20:312
1350708994733,14cyclictest1486307-21kworker/u8:2+flush-179:009:40:302
1350705994745,2cyclictest1339674-21kworker/u8:5+events_unbound07:45:321
1350705994744,2cyclictest1454674-21kworker/u8:0+events_unbound09:20:291
1350703994744,2cyclictest1595671-21kworker/u8:4+flush-179:011:15:290
1350703994743,3cyclictest1339674-21kworker/u8:5+flush-179:008:05:200
1350713994641,3cyclictest1454674-21kworker/u8:0+flush-179:009:05:153
1350713994640,4cyclictest1632667-21/usr/share/muni11:40:173
1350713994640,4cyclictest1439649-21/usr/share/muni08:35:043
1350708994643,2cyclictest1652765-21kworker/u8:1+events_unbound12:15:002
1350708994643,2cyclictest1486307-21kworker/u8:2+events_unbound10:25:162
1350708994643,2cyclictest1324357-21kworker/u8:2+flush-179:007:15:332
1350708994642,3cyclictest1444316-21kworker/u8:3+flush-179:008:45:002
1350705994644,1cyclictest592034-1kworker/1:0H+kblockd10:41:441
1350705994643,2cyclictest592034-1kworker/1:0H+kblockd12:18:541
1350705994643,2cyclictest1423558-21kworker/u8:1+flush-179:008:40:011
1350705994640,4cyclictest1569913-21cp10:40:011
1350705994640,4cyclictest1569913-21cp10:40:011
1350713994541,3cyclictest1454674-21kworker/u8:0+flush-179:009:20:153
1350713994540,3cyclictest1423558-21kworker/u8:1+events_unbound08:25:203
1350708994543,1cyclictest1538516-21kworker/2:2+pm10:45:022
1350708994542,2cyclictest1637551-21kworker/u8:2+flush-179:011:51:122
1350708994539,5cyclictest247560-21ThreadPoolForeg10:00:402
1350705994543,2cyclictest1423558-21kworker/u8:1+flush-179:008:40:301
1350705994542,2cyclictest1652765-21kworker/u8:1+events_unbound12:39:041
1350705994542,2cyclictest1465854-21kworker/u8:1+events_unbound09:25:161
1350705994541,3cyclictest1595671-21kworker/u8:4+events_unbound11:25:111
1350705994541,3cyclictest1575065-21kworker/u8:0+flush-179:010:55:281
1350705994538,3cyclictest1372227-21kworker/u8:0+flush-179:008:20:171
1350703994543,2cyclictest1423558-21kworker/u8:1+flush-179:008:40:110
135070399451,42cyclictest3125648-13Chrome_IOThread11:30:230
1350713994438,4cyclictest1523575-21/usr/share/muni09:55:103
1350708994441,2cyclictest1621635-21kworker/u8:0+flush-179:011:30:312
1350708994440,3cyclictest1595671-21kworker/u8:4+flush-179:012:20:282
1350705994441,2cyclictest1673611-21kworker/u8:6+flush-179:012:30:311
1350705994441,2cyclictest1454674-21kworker/u8:0+events_unbound09:55:181
1350705994440,3cyclictest1673611-21kworker/u8:6+flush-179:012:26:041
1350705994440,3cyclictest1324357-21kworker/u8:2+events_unbound07:50:311
1350713994338,3cyclictest76405-21systemd-journal11:45:083
1350708994340,2cyclictest1324357-21kworker/u8:2+events_unbound07:10:222
1350708994339,3cyclictest1528119-21kworker/u8:1+flush-179:010:50:192
1350708994326,15cyclictest1339674-21kworker/u8:5+flush-179:008:15:112
1350705994339,3cyclictest1621635-21kworker/u8:0+flush-179:011:55:351
1350705994338,4cyclictest1339674-21kworker/u8:5+flush-179:009:40:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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