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2026-05-06 - 01:32
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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 Tue May 05, 2026 12:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2502992217,4cyclictest0-21swapper/107:30:171
250299220,1cyclictest0-21swapper/108:00:151
250199220,4cyclictest0-21swapper/009:55:500
2503992113,4cyclictest0-21swapper/210:03:462
250299212,16cyclictest0-21swapper/108:22:141
250199210,3cyclictest0-21swapper/008:23:400
2503992018,1cyclictest271rcuc/210:12:262
250199203,9cyclictest30707-21/usr/sbin/munin11:05:000
250399191,17cyclictest28-21ksoftirqd/210:48:222
250399190,4cyclictest399-20systemd-journal07:28:012
250399190,18cyclictest271rcuc/212:28:112
250399190,17cyclictest5541-21munin-plugin-st07:15:012
250399190,15cyclictest0-21swapper/212:03:192
250299197,1cyclictest0-21swapper/110:35:121
250299192,2cyclictest19547-21timerwakeupswit12:35:211
250199193,15cyclictest0-21swapper/010:40:180
2501991917,1cyclictest0-21swapper/008:55:190
2501991916,2cyclictest1645-21cut11:10:010
250199190,18cyclictest0-21swapper/009:20:590
250399182,15cyclictest4035-21H222:10:212
2503991818,0cyclictest28-21ksoftirqd/211:18:472
2503991816,1cyclictest0-21swapper/211:35:162
250399180,17cyclictest399-20systemd-journal10:23:592
250399180,17cyclictest0-21swapper/211:32:362
250399180,17cyclictest0-21swapper/209:20:182
250399180,15cyclictest271rcuc/209:51:282
250299180,3cyclictest5342-21grep12:10:171
250299180,3cyclictest2203-21latency_hist10:15:001
250299180,16cyclictest0-21swapper/109:48:081
2501991815,2cyclictest4781-21cat12:10:140
2501991814,1cyclictest0-21swapper/007:55:140
250199180,2cyclictest3976-21H222:10:210
250199180,17cyclictest843-21systemd-network09:40:140
250199180,17cyclictest0-21swapper/012:38:420
250399172,1cyclictest28-21ksoftirqd/210:30:172
2503991715,2cyclictest28-21ksoftirqd/209:25:232
2503991715,2cyclictest28-21ksoftirqd/209:25:232
2503991715,1cyclictest3989-21H222:10:212
2503991715,1cyclictest28-21ksoftirqd/209:45:012
2503991715,1cyclictest28-21ksoftirqd/208:35:202
2503991715,1cyclictest28-21ksoftirqd/207:30:152
2503991715,1cyclictest271rcuc/207:45:152
2503991715,1cyclictest0-21swapper/210:25:182
2503991714,2cyclictest31392-21/usr/sbin/munin11:05:162
2503991714,2cyclictest26317-21/usr/sbin/munin10:55:162
2503991714,2cyclictest21084-21sort07:40:162
2503991712,1cyclictest0-21swapper/209:55:212
250399171,15cyclictest3985-21H222:10:212
250399171,15cyclictest3210-21JS22:10:212
250399171,15cyclictest28-21ksoftirqd/207:55:232
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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