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2025-01-14 - 08:19
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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 rack9slot2.osadl.org (updated Tue Jan 14, 2025 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22142296256,26sleep10-21swapper/11
258999283279,3cyclictest0-21swapper/00
21862265207,45sleep30-21swapper/33
23172259188,51sleep00-21swapper/00
23602234181,40sleep20-21swapper/22
259799172168,2cyclictest0-21swapper/22
2215121620,2sleep10-21swapper/11
710321580,3sleep1259399cyclictest1
2593999893,3cyclictest0-21swapper/11
2600999691,3cyclictest32236-21strings3
19112580,3sleep10-21swapper/11
19112580,3sleep10-21swapper/11
309182560,1sleep30-21swapper/33
72252470,1sleep30-21swapper/33
306592470,1sleep30-21swapper/33
2589993613,4cyclictest20479-21cat0
2589993513,4cyclictest8635-21cat0
2589993415,4cyclictest12010-21seq0
2589993413,3cyclictest29547-21cut0
2589993314,4cyclictest29099-21seq0
2589993314,3cyclictest29392-21dpkg0
2589993112,4cyclictest14990-21cat0
2589993112,3cyclictest6013-21date0
2589993112,3cyclictest22282-21awk0
2589993112,3cyclictest12948-21readlink0
2589993015,2cyclictest12027-21kernelversion0
2589993014,3cyclictest1331-21sh0
2589993012,3cyclictest2082-21systemd-journal0
2589993011,3cyclictest28802-21date0
2589993011,3cyclictest14748-21which0
131332300,1sleep10-21swapper/11
322362290,2sleep00-21swapper/00
2589992912,2cyclictest7349-21/usr/sbin/munin0
2589992813,3cyclictest11153-21sendmail-mta0
2589992812,3cyclictest27377-21latency_hist0
2589992812,3cyclictest27377-21latency_hist0
258999272,6cyclictest17401-21apt-get0
2589992713,3cyclictest665-21runrttasks0
259799263,21cyclictest17375-21cat2
258999263,6cyclictest29662-21apt-get0
2589992613,3cyclictest665-21runrttasks0
2589992613,3cyclictest665-21runrttasks0
2589992513,2cyclictest665-21runrttasks0
2589992511,3cyclictest665-21runrttasks0
219262250,1sleep00-21swapper/00
2600992418,4cyclictest32037-21idleruntime-cro3
2600992418,3cyclictest21915-21grep3
251632240,2sleep2259799cyclictest2
2600992315,5cyclictest9756-21seq3
2597992316,4cyclictest2082-21systemd-journal2
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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