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2025-11-20 - 13:25
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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 Thu Nov 20, 2025 00:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
211899245,11cyclictest0-21swapper/119:45:191
212599220,18cyclictest0-21swapper/222:43:582
211899221,18cyclictest0-21swapper/122:20:011
211899214,16cyclictest0-21swapper/119:33:351
211899212,3cyclictest0-21swapper/123:48:141
211899212,16cyclictest4581-21H212:26:331
2113992113,1cyclictest0-21swapper/000:15:160
2125992011,8cyclictest0-21swapper/200:15:162
211899204,15cyclictest21-21ksoftirqd/121:21:241
211899204,15cyclictest0-21swapper/119:35:121
211899201,18cyclictest16260-21smartctl23:50:221
211899200,5cyclictest0-21swapper/121:39:421
211899200,2cyclictest30149-21latency_hist20:30:011
212599192,16cyclictest31611-21cut22:25:142
2125991916,2cyclictest29536-21sh23:17:002
212599190,16cyclictest4534-21H212:26:332
212599190,16cyclictest4534-21H212:26:332
211899193,15cyclictest0-21swapper/120:45:001
211899192,16cyclictest0-21swapper/121:34:051
211899192,15cyclictest0-21swapper/123:05:041
211899190,5cyclictest0-21swapper/122:40:161
211899190,2cyclictest4593-21H212:26:331
211399193,15cyclictest0-21swapper/021:20:130
2113991914,1cyclictest0-21swapper/022:25:120
2113991913,3cyclictest15714-21tr21:00:140
211399190,18cyclictest0-21swapper/019:27:590
2125991817,1cyclictest28-21ksoftirqd/222:20:202
2125991816,1cyclictest0-21swapper/219:55:102
2125991816,1cyclictest0-21swapper/200:10:002
2125991815,2cyclictest921-21in:imklog21:02:182
2125991814,3cyclictest4593-21H212:26:332
2125991814,3cyclictest4593-21H212:26:332
2125991814,3cyclictest4534-21H212:26:332
2125991814,3cyclictest4532-21H212:26:332
212599181,2cyclictest13442-21timerandwakeup21:50:222
2125991810,4cyclictest0-21swapper/220:07:252
212599180,3cyclictest0-21swapper/221:05:162
212599180,2cyclictest5776-21irqstats22:35:162
212599180,2cyclictest4532-21H212:26:332
212599180,2cyclictest4526-21H212:26:332
212599180,16cyclictest4593-21H212:26:332
212599180,16cyclictest4532-21H212:26:332
212599180,16cyclictest4530-21H212:26:332
212599180,15cyclictest4581-21H212:26:332
211899183,1cyclictest0-21swapper/120:59:131
211899182,15cyclictest10770-21/usr/sbin/munin23:40:151
211899182,15cyclictest0-21swapper/122:26:351
2118991816,1cyclictest21-21ksoftirqd/100:06:181
2118991815,2cyclictest995-21irqbalance22:45:421
2118991814,3cyclictest4532-21H212:26:331
211899180,17cyclictest4526-21H212:26:331
2113991814,3cyclictest4536-21H212:26:330
2113991814,3cyclictest4536-21H212:26:330
2113991814,3cyclictest4534-21H212:26:330
2113991814,2cyclictest4532-21H212:26:330
2113991814,2cyclictest15400-21munin-plugin-st21:00:010
211399181,2cyclictest4530-21H212:26:330
211399181,1cyclictest4534-21H212:26:330
211399180,3cyclictest4530-21H212:26:330
211399180,16cyclictest1845-21systemd-journal20:35:020
211399180,15cyclictest4534-21H212:26:330
212599172,1cyclictest0-21swapper/221:45:122
2125991715,1cyclictest64412sleep220:43:482
2125991715,1cyclictest28-21ksoftirqd/222:30:052
2125991715,1cyclictest0-21swapper/220:20:222
2125991714,2cyclictest7698-21nfsd423:35:172
2125991714,2cyclictest4593-21H212:26:332
2125991714,2cyclictest4536-21H212:26:332
2125991714,2cyclictest4536-21H212:26:332
2125991714,2cyclictest4536-21H212:26:332
2125991714,2cyclictest32374-21expr21:30:122
2125991714,2cyclictest11555-21ps20:50:222
2125991713,3cyclictest4593-21H212:26:332
2125991713,3cyclictest4532-21H212:26:332
212599170,2cyclictest5400-21cron19:30:012
212599170,2cyclictest4536-21H212:26:332
212599170,2cyclictest4523-21H212:26:332
212599170,2cyclictest23721-21ntp_kernel_pll_20:15:202
212599170,2cyclictest17331-21grep22:00:152
212599170,2cyclictest17331-21grep22:00:152
212599170,1cyclictest4526-21H212:26:332
212599170,16cyclictest6295-21grep00:30:222
212599170,16cyclictest4528-21H212:26:332
212599170,16cyclictest4528-21H212:26:332
212599170,16cyclictest4523-21H212:26:332
212599170,16cyclictest4095-21timerwakeupswit00:25:212
212599170,16cyclictest25375-21ps21:15:192
212599170,16cyclictest1845-21systemd-journal23:09:002
211899172,1cyclictest0-21swapper/120:02:191
2118991715,1cyclictest3830-21cpuspeed_turbos23:30:141
2118991714,2cyclictest9287-21apt-get20:50:011
2118991714,2cyclictest7670-21chrt19:42:131
2118991714,2cyclictest4025-21latency_hist19:20:011
2118991714,2cyclictest30001-21snapd21:02:201
2118991714,2cyclictest29682-21expr21:25:171
2118991714,2cyclictest25823-21which20:20:181
2118991714,2cyclictest21913-21cron20:15:011
2118991714,2cyclictest18659-21cron23:00:011
2118991714,2cyclictest16318-21uptime21:55:221
211899171,15cyclictest0-21swapper/122:35:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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