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2025-12-03 - 10:51
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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 Wed Dec 03, 2025 00:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1311999261,19cyclictest0-21swapper/022:15:010
1312199250,1cyclictest0-21swapper/219:50:182
13121992420,3cyclictest32708-21php7.021:39:012
1312199237,15cyclictest28-21ksoftirqd/200:17:132
13121992314,9cyclictest0-21swapper/223:38:002
1312099230,5cyclictest0-21swapper/121:40:201
1312099220,21cyclictest0-21swapper/100:00:361
1312199212,18cyclictest12146-21fschecks_time22:55:162
1312199212,18cyclictest12146-21fschecks_time22:55:162
13121992121,0cyclictest0-21swapper/223:05:172
13121992118,2cyclictest4538-21H212:26:332
1312099215,15cyclictest21-21ksoftirqd/120:49:131
13119992121,0cyclictest0-21swapper/023:05:160
1311999210,4cyclictest0-21swapper/023:40:580
1312199203,2cyclictest4530-21H212:26:332
13121992011,8cyclictest0-21swapper/219:14:292
1312199200,19cyclictest823-21systemd-network21:52:282
1312099203,16cyclictest16109-21cut19:15:021
13119992018,1cyclictest9-21ksoftirqd/000:20:540
13119992017,2cyclictest4530-21H212:26:330
1312199193,15cyclictest4530-21H212:26:332
1312199192,1cyclictest28-21ksoftirqd/219:15:132
13121991914,3cyclictest1845-21systemd-journal23:17:002
1312199190,2cyclictest4526-21H212:26:332
13120991917,1cyclictest0-21swapper/122:25:131
13120991917,1cyclictest0-21swapper/100:32:251
13120991916,1cyclictest4526-21H212:26:331
1312099190,18cyclictest0-21swapper/123:10:151
1312099190,18cyclictest0-21swapper/121:02:081
1312099190,17cyclictest4526-21H212:26:331
1311999193,15cyclictest22856-21latency_hist20:25:010
1311999193,15cyclictest22856-21latency_hist20:25:010
1311999190,16cyclictest4581-21H212:26:330
1312199189,5cyclictest0-21swapper/221:25:192
1312199183,14cyclictest0-21swapper/223:45:322
1312199182,15cyclictest0-21swapper/223:25:162
13121991817,1cyclictest28-21ksoftirqd/220:29:402
13121991816,1cyclictest28-21ksoftirqd/220:25:012
13121991816,1cyclictest28-21ksoftirqd/220:25:012
13121991816,1cyclictest119622chrt21:57:162
13121991816,1cyclictest0-21swapper/222:10:012
13121991816,1cyclictest0-21swapper/222:10:012
13121991814,3cyclictest0-21swapper/221:25:012
1312199181,2cyclictest4538-21H212:26:332
1312199181,17cyclictest0-21swapper/221:19:152
1312199181,16cyclictest16110-21expr00:00:142
1312199180,16cyclictest4532-21H212:26:332
1312099182,15cyclictest4532-21H212:26:331
13120991816,1cyclictest21-21ksoftirqd/119:33:211
13120991814,3cyclictest4523-21H212:26:331
1312099180,2cyclictest8702-21sshd19:56:221
1312099180,2cyclictest8702-21sshd19:56:211
1312099180,1cyclictest0-21swapper/123:25:171
1312099180,17cyclictest4526-21H212:26:331
1312099180,15cyclictest4534-21H212:26:331
1311999182,15cyclictest4526-21H212:26:330
13119991816,1cyclictest9-21ksoftirqd/022:51:350
13119991816,1cyclictest0-21swapper/023:35:530
13119991816,1cyclictest0-21swapper/022:20:180
13119991816,1cyclictest0-21swapper/019:20:430
13119991815,2cyclictest20562-21chrt00:06:330
13119991815,2cyclictest11211-21awk23:50:180
13119991814,3cyclictest0-21swapper/023:47:280
13119991814,3cyclictest0-21swapper/021:32:350
1311999180,2cyclictest4526-21H212:26:330
1311999180,2cyclictest4526-21H212:26:330
1311999180,15cyclictest4538-21H212:26:330
1311999180,15cyclictest4536-21H212:26:330
13121991715,1cyclictest0-21swapper/219:35:192
13121991715,1cyclictest0-21swapper/219:20:462
13121991714,2cyclictest7859-21needreboot19:55:182
13121991714,2cyclictest7859-21needreboot19:55:182
13121991714,2cyclictest414-20systemd-journal20:17:182
13121991714,2cyclictest32590-21ntp_offset23:30:202
13121991714,2cyclictest27079-21grep22:25:142
13121991714,2cyclictest0-21swapper/221:00:152
1312199171,1cyclictest28-21ksoftirqd/219:45:522
1312199171,15cyclictest0-21swapper/222:14:252
1312199170,2cyclictest8318-21ls22:50:002
1312199170,2cyclictest4534-21H212:26:332
1312199170,2cyclictest4526-21H212:26:332
1312199170,2cyclictest31562-21sed19:40:192
1312199170,2cyclictest1555-21lxd00:10:572
1312199170,2cyclictest1400-21sendmail-mta23:55:582
1312199170,2cyclictest13871-21grep22:00:182
1312199170,1cyclictest4538-21H212:26:332
1312199170,1cyclictest4538-21H212:26:332
1312199170,1cyclictest0-21swapper/223:40:022
1312199170,1cyclictest0-21swapper/223:20:192
1312199170,16cyclictest5605-21netstat21:45:182
1312199170,16cyclictest4593-21H212:26:332
1312199170,16cyclictest4538-21H212:26:332
1312199170,16cyclictest4536-21H212:26:332
1312199170,16cyclictest4536-21H212:26:332
1312199170,16cyclictest23572-21munin-plugin-st22:20:012
1312199170,16cyclictest22535-21cron23:15:002
1312199170,16cyclictest21732-21cpuspeed_turbos19:25:152
1312199170,16cyclictest15828-21idleruntime20:10:182
1312199170,16cyclictest12589-21expr20:05:142
1312199170,16cyclictest0-21swapper/222:40:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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