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2026-07-14 - 08:44
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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 rackdslot0.osadl.org (updated Tue Jul 14, 2026 00:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1682599264,21cyclictest0-21swapper/119:33:101
16829992514,10cyclictest0-21swapper/220:55:162
16829992424,0cyclictest0-21swapper/222:33:392
1682599241,22cyclictest0-21swapper/100:13:591
1682599240,1cyclictest0-21swapper/122:40:001
16829992322,1cyclictest0-21swapper/222:41:002
16829992313,5cyclictest0-21swapper/222:00:132
1682999230,5cyclictest0-21swapper/223:00:152
1682999230,0cyclictest0-21swapper/222:05:122
16825992314,7cyclictest20992-21pzem_energy20:10:191
1682999220,20cyclictest14500-21snapd23:35:112
16825992217,4cyclictest0-21swapper/120:49:191
16825992216,5cyclictest0-21swapper/122:20:411
16825992214,7cyclictest23622-21if_eno100:05:181
1682599220,3cyclictest9021-21grep22:40:211
1682599220,3cyclictest11065-21munin-run21:50:001
1682599220,2cyclictest8411-21uname00:35:171
1682599220,2cyclictest454-21systemctl00:20:191
1682599220,21cyclictest26535-21if_enp1s019:25:161
1682599220,21cyclictest0-21swapper/121:30:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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