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2022-01-23 - 09:58

AMD G-T48L Processor, Linux 4.4.4-rt11 (Profile)

Latency plot of system in rack #c, slot #3
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
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 rackcslot3.osadl.org (updated Sun Jan 23, 2022 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
89950710irq/17-ehci_hcd181ktimersoftd/119:11:521
81700rcu_preempt5371-21cpuspeed_turbos19:11:360
81700rcu_preempt0-21swapper/023:17:300
81700rcu_preempt0-21swapper/021:33:350
81700rcu_preempt0-21swapper/000:34:390
81690rcu_preempt20714-21ssh22:38:420
81690rcu_preempt0-21swapper/021:58:520
81680rcu_preempt27995-21ssh23:46:370
81680rcu_preempt18613-21ssh21:41:121
81680rcu_preempt0-21swapper/023:27:500
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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