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2026-05-08 - 08:07
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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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack3slot6.osadl.org (updated Fri May 08, 2026 00:44:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1060210118,37sleep00-21swapper/019:06:300
128342870,4chrt36-21kcompactd000:10:551
322602855,33sleep132313-21cut19:05:141
1596998551,26cyclictest562-21runrttasks19:35:141
1596998231,18cyclictest0-21swapper/123:30:161
1596998151,15cyclictest5680-21apt-get19:20:141
1596997850,14cyclictest23513-21apt-get20:10:121
1596997740,26cyclictest8343-21apt-get22:30:141
1596997649,14cyclictest802-21apt-get23:40:131
1596997644,17cyclictest15162-21apt-get00:20:161
1596997548,14cyclictest17407-21apt-get22:55:121
1596997539,26cyclictest18634-21apt-get00:30:121
1596997444,15cyclictest9867-21apt-get00:05:111
159199745,58cyclictest1659-21apt-get19:10:120
1596997349,15cyclictest3365-21apt-get20:45:131
1596997347,14cyclictest1659-21apt-get19:10:141
1596997325,43cyclictest0-21swapper/100:25:141
1591997344,18cyclictest14-21ksoftirqd/021:10:110
1596997146,13cyclictest16486-21apt-get19:50:111
1596997140,23cyclictest6600-21seq22:25:111
1596997054,10cyclictest26-21ksoftirqd/119:25:231
1591996912,48cyclictest0-21swapper/021:15:140
1596996839,23cyclictest26557-21cat23:20:231
1596996833,27cyclictest16766-21grep22:50:371
1596996832,26cyclictest11096-21ntp_kernel_err22:35:391
1596996824,38cyclictest0-21swapper/119:35:011
159199686,18cyclictest9867-21apt-get00:05:130
1591996813,45cyclictest10644-21apt-get21:05:120
1596996749,10cyclictest26-21ksoftirqd/120:20:111
1596996740,18cyclictest6340-21apt-get23:55:151
1596996737,23cyclictest15274-21unixbench_singl21:15:361
1596996737,19cyclictest12260-21diskmemload21:10:011
1596996734,24cyclictest21154-21/usr/sbin/munin21:35:171
1596996732,25cyclictest19163-21/usr/sbin/munin23:00:181
159199673,17cyclictest20303-21users23:00:370
1596996637,20cyclictest3802-21awk22:15:321
1596996636,16cyclictest8903-21apt-get21:00:241
1596996635,26cyclictest18698-21uname19:55:251
1596996635,25cyclictest243-21systemd-journal23:30:001
1596996635,23cyclictest29944-21/usr/sbin/munin22:00:151
1596996632,24cyclictest28836-21aten2.4_r3power20:25:161
1596996626,34cyclictest503-21snmpd19:15:481
1596996540,15cyclictest21722-21apt-get20:05:121
1596996539,19cyclictest6423-21munin-run22:25:001
1596996539,17cyclictest503-21snmpd20:00:551
1596996538,20cyclictest457-21dbus-daemon20:40:001
1596996536,15cyclictest1052-21apt-get22:10:131
1596996535,25cyclictest243-21systemd-journal23:20:001
1596996535,23cyclictest16322-21basename19:50:001
1596996534,16cyclictest28185-21apt-get21:55:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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