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2024-10-13 - 20:48
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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 10 highest latencies:
System rack1slot2.osadl.org (updated Sun Oct 13, 2024 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2361925142,0sleep20-21swapper/206:42:492
2344623525,0sleep10-21swapper/106:40:481
2369723329,0sleep30-21swapper/306:43:463
2348522824,0sleep00-21swapper/006:41:190
238729983,0cyclictest28655-21awk09:44:310
238729983,0cyclictest27166-21sadc12:14:140
238729983,0cyclictest23871-21snmpd11:54:270
329970,0watchdog/30-21swapper/310:49:323
29925070,0irq/32-eth0-rx-0-21swapper/307:44:353
238729973,0cyclictest5430-21sadc11:24:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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