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2026-05-21 - 14:51
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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 20 highest latencies:
System rackcslot4.osadl.org (updated Thu May 21, 2026 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10513172318276,28sleep00-21swapper/019:08:410
10511302273232,27sleep10-21swapper/119:06:401
118935721670,2sleep10-21swapper/123:09:131
12335472740,1chrt1233544-21sh00:08:400
12335472740,1chrt1233544-21sh00:08:400
11748912710,3sleep1251rcuc/122:49:481
179699670,4rtkit-daemon1795-21rtkit-daemon00:11:231
11546802600,3sleep1251rcuc/122:20:291
105158999579,6cyclictest0-21swapper/121:42:231
105158999579,6cyclictest0-21swapper/121:42:221
105158999573,6cyclictest1178933-21apt-get22:55:131
105158999572,7cyclictest1108279-21apt-get21:20:141
105158999572,5cyclictest1076559-21apt-get20:10:121
105158999568,6cyclictest1189943-21apt-get23:10:131
105158999563,10cyclictest1078507-21apt-get20:15:131
105158999560,5cyclictest1218797-21ssh23:48:331
105158999552,6cyclictest1134703-21apt-get21:55:111
105158999552,12cyclictest1083197-21ntp_states20:25:201
105158999551,6cyclictest1228316-21ntp_states00:00:211
179699540,3rtkit-daemon0-21swapper/019:36:501
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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