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2025-10-20 - 03:58
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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 50 highest latencies:
System rackdslot0.osadl.org (updated Mon Oct 20, 2025 00:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3242399244,1cyclictest0-21swapper/220:05:322
3242399240,3cyclictest454-21plymouthd21:40:172
3242399240,18cyclictest0-21swapper/223:34:112
3242399234,15cyclictest28-21ksoftirqd/220:00:222
32423992316,6cyclictest8364-21chrt19:22:502
32423992316,6cyclictest8364-21chrt19:22:502
3242399230,5cyclictest0-21swapper/219:18:472
3242399230,22cyclictest20945-21mailstats20:40:232
3242299230,5cyclictest0-21swapper/100:36:261
3242299230,5cyclictest0-21swapper/100:36:251
3242399222,2cyclictest17552-21needreboot00:20:192
3242399222,15cyclictest43512chrt23:56:102
3242399221,2cyclictest14682-21chrt21:26:332
3242399221,16cyclictest27529-21taskset22:45:142
3242399220,2cyclictest9412-21latency_hist22:15:012
3242399220,2cyclictest25767-21munin-run19:55:022
3242399220,2cyclictest1646-21grep22:00:222
3242399220,21cyclictest12846-21cat22:20:162
3242399220,21cyclictest12846-21cat22:20:152
3242399220,21cyclictest0-21swapper/219:55:182
3242399220,1cyclictest0-21swapper/222:26:412
3242399220,16cyclictest454-21plymouthd00:05:012
3242399220,16cyclictest20204-21switchtime22:30:212
32423992114,6cyclictest31845-21postgres21:59:032
3242399211,1cyclictest0-21swapper/221:15:002
3242399211,19cyclictest228402chrt22:35:202
3242399210,2cyclictest3277-21sed23:00:022
3242399210,2cyclictest31122-21chrt23:48:252
3242399210,2cyclictest10512-21taskset20:24:022
3242399210,1cyclictest0-21swapper/221:50:032
3242399210,17cyclictest11623-21cut20:25:162
3242399210,16cyclictest20436-21phpquery21:39:012
3242399210,16cyclictest17431-21apt-key19:40:012
3242399210,15cyclictest9612-21fschecks_time19:25:172
3242399210,15cyclictest0-21swapper/223:40:172
3242399210,15cyclictest0-21swapper/222:55:002
3242399210,15cyclictest0-21swapper/222:05:132
3242399210,15cyclictest0-21swapper/219:30:222
3242299213,12cyclictest17896-21apt-config22:30:011
32423992014,5cyclictest4264-21pzem_power20:10:232
32423992014,5cyclictest14793-21cat23:20:122
32423992014,5cyclictest0-21swapper/223:50:212
32423992014,5cyclictest0-21swapper/222:16:202
32423992014,5cyclictest0-21swapper/200:34:592
32423992014,5cyclictest0-21swapper/200:10:172
32423992013,6cyclictest6473-21cut23:05:142
32423992013,6cyclictest3045-21apt-config23:00:022
32423992013,6cyclictest25082-21cut20:50:132
32423992013,6cyclictest24951-21http_loadtime22:40:162
32423992013,6cyclictest0-21swapper/220:30:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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