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2025-12-09 - 08:51
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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 rackdslot0.osadl.org (updated Tue Dec 09, 2025 00:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2992993423,10cyclictest22143-21expr23:30:132
2992992314,8cyclictest14111-21iwlist00:10:172
299299220,21cyclictest9245-21ntp_kernel_pll_20:15:192
299199225,16cyclictest29171-21expr19:55:151
299199225,16cyclictest16422-21expr23:20:141
2991992219,2cyclictest9428-21mailstats20:15:211
2991992219,2cyclictest14667-21ntpq00:10:201
2991992218,3cyclictest32278-21grep22:50:221
2991992218,3cyclictest17513-21cat22:25:181
2991992218,3cyclictest12957-21awk20:25:011
2991992217,4cyclictest23281-21systemctl23:30:211
299099224,11cyclictest0-21swapper/020:20:010
299099220,21cyclictest823-21systemd-network23:31:340
299099220,18cyclictest0-21swapper/022:44:110
299199216,14cyclictest0-21swapper/123:57:541
299199214,2cyclictest8056-21apt-config22:10:011
299199214,2cyclictest6226-21sed20:10:181
299199214,2cyclictest0-21swapper/123:00:201
299199214,16cyclictest951-21sed21:55:211
299199214,16cyclictest568-21sed21:00:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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