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2026-01-01 - 17:26
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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 50 highest latencies:
System rackbslot1.osadl.org (updated Thu Jan 01, 2026 12:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14608252230185,34sleep10-21swapper/107:09:521
14606392212184,18sleep30-21swapper/307:07:303
14607112210186,14sleep20-21swapper/207:08:242
14605752189166,13sleep00-21swapper/007:06:460
1461215996556,7cyclictest1649247-21/usr/share/muni10:10:130
146122099641,4cyclictest1747882-21chrome11:45:012
1461215996459,3cyclictest1535360-21munin-update08:20:350
1461220995938,20cyclictest1607273-21kworker/u8:0+flush-179:010:00:302
1461222995652,3cyclictest1669222-21kworker/u8:0+flush-179:010:50:323
1461215995651,3cyclictest1602145-21kworker/u8:3+flush-179:011:00:200
1461222995452,1cyclictest1747611-21munin-update11:45:013
1461222995449,4cyclictest1487641-21kworker/u8:2+flush-179:007:55:003
1461217995449,4cyclictest1465769-31munin-html07:10:361
1461217995349,3cyclictest1607273-21kworker/u8:0+flush-179:009:40:121
1461217995248,3cyclictest1643740-21kworker/u8:1+flush-179:010:05:141
1461217995237,2cyclictest1685110-13chrome10:45:011
1461222995144,5cyclictest247560-21ThreadPoolForeg07:55:243
1461220995117,33cyclictest3125629-21e21169fc69a4c6707:33:392
146121599510,49cyclictest105477-21isc-net-000707:45:020
1461220995029,11cyclictest1260-21snmpd12:06:102
1461217995047,2cyclictest1700719-21kworker/u8:2+events_unbound11:30:291
1461217995046,3cyclictest1684468-21kworker/u8:4+flush-179:011:10:161
1461217995046,2cyclictest1601677-21kworker/u8:2+flush-179:009:45:261
1461217995046,2cyclictest1601677-21kworker/u8:2+flush-179:009:45:261
1461215995046,3cyclictest1524779-21kworker/u8:2+flush-179:008:10:150
1461215995046,3cyclictest1429337-21kworker/u8:3+flush-179:007:40:140
14667152490,1chrt1466714-21snmp_wlanswitch07:15:022
1461222994943,4cyclictest1711242-21/usr/share/muni11:10:173
1461220994947,2cyclictest1487641-21kworker/u8:2+flush-179:007:40:112
1461220994946,2cyclictest1789042-21kworker/2:1+pm12:28:462
1461220994937,2cyclictest1540128-21kworker/2:0+pm09:00:142
1461217994945,3cyclictest1716609-21/usr/share/muni11:15:191
1461217994944,4cyclictest1509807-21kworker/u8:1+events_unbound07:55:331
146121799490,37cyclictest1792924-21munin-limits12:25:341
1461215994945,3cyclictest1684468-21kworker/u8:4+flush-179:011:05:200
15765872480,3sleep30-21swapper/308:57:193
1461220994834,2cyclictest1648668-21kworker/2:2+pm10:25:042
1461217994845,2cyclictest1450709-21kworker/u8:1+events_unbound07:25:211
1461217994844,3cyclictest1429337-21kworker/u8:3+flush-179:007:30:121
1461217994843,4cyclictest1700719-21kworker/u8:2+flush-179:011:50:101
1461217994843,3cyclictest1742491-21latency_hist11:40:011
1461220994735,2cyclictest1648668-21kworker/2:2+pm10:11:272
1461217994744,2cyclictest1684468-21kworker/u8:4+flush-179:010:50:371
1461217994744,2cyclictest1601677-21kworker/u8:2+events_unbound09:31:531
1461217994744,2cyclictest1575372-21kworker/u8:0+events_unbound09:00:241
1461215994743,3cyclictest1575372-21kworker/u8:0+events_unbound09:15:270
1461215994740,5cyclictest1679327-31munin-html10:35:460
14889782460,1chrt1488974-21snmp_ryswitch.c07:35:033
1461220994643,2cyclictest1684468-21kworker/u8:4+flush-179:010:50:192
1461217994642,3cyclictest76405-21systemd-journal10:17:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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