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2025-12-09 - 17:39
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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 rackdslot0.osadl.org (updated Tue Dec 09, 2025 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1953999250,24cyclictest21655-21grep11:55:140
1954099237,15cyclictest4536-21H212:26:331
1954199212,18cyclictest0-21swapper/210:47:232
1954099214,16cyclictest0-21swapper/111:57:061
1953999213,17cyclictest0-21swapper/010:37:280
19540992017,2cyclictest4532-21H212:26:331
1953999203,2cyclictest12410-21sed11:40:000
1953999202,3cyclictest0-21swapper/008:30:010
19539992017,2cyclictest10814-21expr10:40:140
19541991917,1cyclictest28-21ksoftirqd/208:45:192
19541991916,1cyclictest0-21swapper/211:55:422
19541991915,3cyclictest1403-21lxd08:01:052
1954199191,16cyclictest4538-21H212:26:332
1954199190,18cyclictest0-21swapper/211:40:012
1954199190,16cyclictest4538-21H212:26:332
1954199190,16cyclictest4532-21H212:26:332
1954199190,16cyclictest4526-21H212:26:332
1954199190,16cyclictest4523-21H212:26:332
19540991914,2cyclictest4593-21H212:26:331
1954099190,1cyclictest0-21swapper/111:02:511
1954099190,18cyclictest414-20systemd-journal08:05:011
1954099190,16cyclictest4530-21H212:26:331
1954099190,16cyclictest4530-21H212:26:331
1954099190,16cyclictest4530-21H212:26:331
1954099190,16cyclictest4523-21H212:26:331
1953999193,1cyclictest0-21swapper/007:15:010
1953999193,15cyclictest0-21swapper/007:47:330
1953999192,16cyclictest5172-21latency_hist07:40:000
19539991919,0cyclictest0-21swapper/010:05:010
19539991918,1cyclictest9-21ksoftirqd/010:45:200
19539991917,1cyclictest9-21ksoftirqd/012:29:560
19539991917,1cyclictest0-21swapper/011:20:010
1953999190,4cyclictest22053-21cpuspeed_turbos11:00:150
1953999190,3cyclictest0-21swapper/011:37:500
1953999190,3cyclictest0-21swapper/008:25:130
1953999190,18cyclictest0-21swapper/009:35:140
1953999190,16cyclictest4536-21H212:26:330
1953999190,16cyclictest4530-21H212:26:330
1953999190,16cyclictest4523-21H212:26:330
1954199182,15cyclictest28-21ksoftirqd/210:36:332
1954199182,15cyclictest28-21ksoftirqd/210:01:192
1954199182,15cyclictest0-21swapper/209:50:132
19541991816,1cyclictest0-21swapper/212:25:152
19541991816,1cyclictest0-21swapper/207:31:492
19541991814,3cyclictest4534-21H212:26:332
19541991814,3cyclictest4530-21H212:26:332
1954199181,16cyclictest29411-21/usr/sbin/munin12:10:222
1954199181,16cyclictest23038-21nfsd411:00:202
1954199180,3cyclictest4536-21H212:26:332
1954199180,3cyclictest4536-21H212:26:332
1954199180,2cyclictest4532-21H212:26:332
1954199180,2cyclictest4528-21H212:26:332
1954199180,2cyclictest4523-21H212:26:332
1954199180,17cyclictest4581-21H212:26:332
1954199180,17cyclictest4528-21H212:26:332
1954199180,17cyclictest20267-21runrttasks09:02:192
1954199180,17cyclictest0-21swapper/212:32:402
1954199180,16cyclictest4581-21H212:26:332
1954199180,16cyclictest4534-21H212:26:332
1954199180,16cyclictest4532-21H212:26:332
1954199180,16cyclictest4530-21H212:26:332
1954199180,16cyclictest4526-21H212:26:332
1954099182,15cyclictest4538-21H212:26:331
19540991816,1cyclictest21-21ksoftirqd/107:28:521
19540991814,3cyclictest4581-21H212:26:331
1954099181,16cyclictest28509-21smtpd12:05:521
1954099180,2cyclictest4593-21H212:26:331
1954099180,2cyclictest4581-21H212:26:331
1954099180,2cyclictest4538-21H212:26:331
1954099180,2cyclictest4536-21H212:26:331
1954099180,2cyclictest4534-21H212:26:331
1954099180,2cyclictest4534-21H212:26:331
1954099180,2cyclictest4526-21H212:26:331
1954099180,2cyclictest4526-21H212:26:331
1954099180,2cyclictest4526-21H212:26:331
1954099180,17cyclictest4581-21H212:26:331
1954099180,16cyclictest0-21swapper/108:02:081
1954099180,15cyclictest4528-21H212:26:331
1953999183,1cyclictest0-21swapper/008:55:480
1953999182,15cyclictest4593-21H212:26:330
1953999182,15cyclictest2466-21timerwakeupswit11:20:230
1953999182,15cyclictest16232-21missed_timers11:45:160
1953999182,15cyclictest0-21swapper/010:10:200
1953999182,15cyclictest0-21swapper/009:54:430
19539991816,1cyclictest0-21swapper/010:05:160
19539991815,2cyclictest31036-21sendmail_mailtr12:10:260
19539991815,2cyclictest25697-21dpkg07:20:020
19539991814,3cyclictest4534-21H212:26:330
19539991814,3cyclictest4532-21H212:26:330
19539991814,3cyclictest4523-21H212:26:330
19539991814,3cyclictest0-21swapper/009:31:060
19539991814,3cyclictest0-21swapper/009:31:050
1953999181,2cyclictest9666-21nfsd409:40:180
1953999181,1cyclictest0-21swapper/008:53:160
1953999181,16cyclictest7723-21apt.systemd.dai07:42:340
1953999180,3cyclictest2489-21grep10:25:160
1953999180,1cyclictest0-21swapper/009:13:090
1953999180,1cyclictest0-21swapper/007:30:140
1953999180,17cyclictest4523-21H212:26:330
1953999180,17cyclictest23390-21perf09:10:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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