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2025-11-21 - 10:18
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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 rackdslot0.osadl.org (updated Fri Nov 21, 2025 00:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1386699340,33cyclictest0-21swapper/122:45:131
1386699230,5cyclictest0-21swapper/121:13:441
1386699230,18cyclictest0-21swapper/120:16:261
13870992212,0cyclictest0-21swapper/223:31:252
1387099220,19cyclictest15993-21fschecks_time23:00:152
1387099220,18cyclictest0-21swapper/223:50:272
13866992220,1cyclictest21-21ksoftirqd/100:24:131
1386599226,15cyclictest0-21swapper/019:53:070
13865992114,3cyclictest0-21swapper/020:58:070
13870992010,0cyclictest0-21swapper/200:24:082
1387099200,17cyclictest4538-21H212:26:332
1386699203,11cyclictest454-21plymouthd22:25:011
13866992017,2cyclictest4532-21H212:26:331
13866992014,5cyclictest0-21swapper/123:00:151
1386699200,19cyclictest823-21systemd-network19:13:011
1387099192,1cyclictest0-21swapper/221:20:012
1387099191,16cyclictest4538-21H212:26:332
1387099190,4cyclictest4536-21H212:26:332
1387099190,2cyclictest4528-21H212:26:332
1387099190,2cyclictest31466-21apache_processe21:35:132
1387099190,18cyclictest0-21swapper/222:52:142
1387099190,18cyclictest0-21swapper/222:32:352
1387099190,17cyclictest4538-21H212:26:332
1387099190,16cyclictest4528-21H212:26:332
1387099190,16cyclictest4528-21H212:26:332
1387099190,16cyclictest4523-21H212:26:332
13866991917,1cyclictest0-21swapper/121:59:111
13866991916,2cyclictest1428-21cron21:39:011
13866991916,1cyclictest0-21swapper/121:22:181
13866991916,1cyclictest0-21swapper/121:22:181
13866991914,4cyclictest823-21systemd-network21:02:451
1386699191,14cyclictest0-21swapper/121:48:181
1386599193,15cyclictest21211-21anvil20:22:580
13865991917,1cyclictest9-21ksoftirqd/023:49:330
13865991917,1cyclictest0-21swapper/022:18:480
13865991914,3cyclictest26575-21cpuspeed_turbos23:20:160
1386599191,17cyclictest0-21swapper/021:35:220
1386599190,2cyclictest4581-21H212:26:330
1387099182,1cyclictest184362chrt20:14:062
1387099182,15cyclictest22193-21chrt19:22:012
1387099182,15cyclictest0-21swapper/220:05:062
13870991815,2cyclictest4593-21H212:26:332
13870991815,2cyclictest0-21swapper/222:05:182
13870991814,3cyclictest0-21swapper/220:18:122
13870991814,2cyclictest19626-21/usr/sbin/munin23:05:242
1387099181,1cyclictest0-21swapper/220:00:522
1387099181,16cyclictest4530-21H212:26:332
1387099180,3cyclictest4535-21H212:26:332
1387099180,2cyclictest31138-21latency_hist19:40:012
1387099180,17cyclictest4538-21H212:26:332
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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