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2025-12-02 - 13:58
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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 02, 2025 00:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17647992423,1cyclictest16241-21kworker/0:223:40:150
1764899230,18cyclictest0-21swapper/120:25:211
1764899230,18cyclictest0-21swapper/120:25:201
1764899230,16cyclictest25230-21grep20:20:161
17647992214,4cyclictest0-21swapper/019:14:130
17649992114,3cyclictest11002-21apt00:39:592
1764999210,19cyclictest414-20systemd-journal20:25:012
17648992116,4cyclictest9959-21tr23:40:141
1764899210,19cyclictest13746-21grep21:55:171
17647992119,1cyclictest9-21ksoftirqd/023:05:430
17649992014,5cyclictest823-21systemd-network00:29:552
1764999193,15cyclictest4526-21H212:26:332
1764999190,18cyclictest0-21swapper/222:48:312
1764999190,18cyclictest0-21swapper/200:01:292
1764899194,1cyclictest0-21swapper/123:08:481
1764899192,2cyclictest13602-21missed_timers23:45:171
17648991913,2cyclictest0-21swapper/121:45:111
1764899190,18cyclictest823-21systemd-network22:06:071
1764799192,1cyclictest9-21ksoftirqd/020:24:040
1764799190,3cyclictest10336-21fschecks_time20:50:160
1764799190,1cyclictest0-21swapper/019:30:140
1764799190,18cyclictest0-21swapper/021:20:130
1764799190,16cyclictest4538-21H212:26:330
1764999182,15cyclictest0-21swapper/221:30:062
17649991816,1cyclictest29658-21expr20:25:242
17649991816,1cyclictest29658-21expr20:25:242
17649991816,1cyclictest0-21swapper/221:39:362
17649991815,2cyclictest32304-21cat23:20:212
17649991815,2cyclictest21953-21idleruntime-cro22:10:002
1764999181,2cyclictest414-20systemd-journal19:28:362
1764999181,2cyclictest17937-21/usr/sbin/munin19:10:152
1764999181,16cyclictest184692sleep222:02:542
1764999180,3cyclictest24541-21anvil22:16:592
1764999180,1cyclictest0-21swapper/200:05:392
1764999180,17cyclictest8487-21fgrep20:45:222
1764999180,17cyclictest4532-21H212:26:332
1764999180,17cyclictest0-21swapper/220:00:532
1764999180,16cyclictest4534-21H212:26:332
1764999180,16cyclictest4526-21H212:26:332
1764999180,0cyclictest0-21swapper/222:40:012
1764899182,15cyclictest4523-21H212:26:331
1764899182,15cyclictest0-21swapper/123:00:161
17648991816,1cyclictest0-21swapper/122:00:151
17648991816,1cyclictest0-21swapper/100:16:471
1764899180,2cyclictest4538-21H212:26:331
1764899180,2cyclictest4528-21H212:26:331
1764899180,16cyclictest0-21swapper/120:55:211
1764899180,15cyclictest0-21swapper/120:05:221
17647991816,1cyclictest9-21ksoftirqd/000:11:430
17647991816,1cyclictest0-21swapper/019:50:420
17647991815,2cyclictest4526-21H212:26:330
17647991814,2cyclictest29115-21nfsd420:25:210
17647991814,2cyclictest29115-21nfsd420:25:200
17647991813,1cyclictest0-21swapper/020:44:070
1764799181,2cyclictest5263-21grep23:30:190
1764799180,17cyclictest4523-21H212:26:330
1764799180,17cyclictest0-21swapper/023:15:210
1764799180,15cyclictest4532-21H212:26:330
1764799180,15cyclictest4530-21H212:26:330
17649991715,1cyclictest0-21swapper/223:09:392
17649991715,1cyclictest0-21swapper/223:03:552
17649991714,2cyclictest7363-21taskset19:47:022
17649991714,2cyclictest6619-21python322:40:002
17649991714,2cyclictest4776-21lxd21:48:562
17649991714,2cyclictest4538-21H212:26:332
17649991714,2cyclictest4538-21H212:26:332
17649991714,2cyclictest4530-21H212:26:332
17649991714,2cyclictest4523-21H212:26:332
17649991714,2cyclictest3692-21master20:13:212
17649991714,2cyclictest22361-21apache_volume22:10:122
17649991714,2cyclictest22361-21apache_volume22:10:112
17649991714,2cyclictest18307-21pzem_power22:55:212
17649991714,2cyclictest18127-21grep21:05:142
17649991714,2cyclictest10157-21expr20:50:152
17649991713,3cyclictest1845-21systemd-journal19:17:002
1764999170,2cyclictest4538-21H212:26:332
1764999170,2cyclictest2523-21grep23:25:212
1764999170,2cyclictest24818-21nfsd421:15:182
1764999170,2cyclictest13752-21cpuspeed_turbos21:55:162
1764999170,1cyclictest0-21swapper/220:08:502
1764999170,17cyclictest0-21swapper/221:51:262
1764999170,16cyclictest8067-21awk23:35:192
1764999170,16cyclictest7624-21timerwakeupswit00:30:202
1764999170,16cyclictest5895-21sort20:40:222
1764999170,16cyclictest4593-21H212:26:332
1764999170,16cyclictest454-21plymouthd19:40:152
1764999170,16cyclictest3707-21lxd22:52:562
1764999170,16cyclictest28359-21cat22:20:152
1764999170,16cyclictest22954-21proxymap21:13:342
1764999170,16cyclictest2049-21systemd-journal20:59:122
1764999170,16cyclictest1603-21lxd19:30:562
1764999170,15cyclictest4538-21H212:26:332
1764999170,15cyclictest4528-21H212:26:332
17648991715,1cyclictest32532sleep120:38:191
17648991715,1cyclictest0-21swapper/100:05:131
17648991714,2cyclictest6504-21nfsd419:45:191
17648991714,2cyclictest5772-21/usr/sbin/munin00:30:091
17648991714,2cyclictest454-21plymouthd20:10:161
17648991714,2cyclictest4528-21H212:26:331
17648991714,2cyclictest4528-21H212:26:331
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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