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2021-10-26 - 23:39

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 20 highest latencies:
System rackcslot3.osadl.org (updated Fri Oct 15, 2021 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81890rcu_preempt0-21swapper/112:30:451
89950780irq/17-ehci_hcd945-21usb-storage07:05:470
89550780irq/17-ehci_hcd41ktimersoftd/011:54:520
89950720irq/17-ehci_hcd945-21usb-storage08:07:090
81720rcu_preempt22432-21wc07:05:431
81710rcu_preempt16600-21ssh10:00:280
81700rcu_preempt28358-21ntp_states11:20:370
81700rcu_preempt0-21swapper/012:35:370
81680rcu_preempt1169-21kworker/0:009:44:390
89950670irq/17-ehci_hcd945-21usb-storage09:43:331
81670rcu_preempt0-21swapper/011:31:240
81670rcu_preempt0-21swapper/009:20:210
81670rcu_preempt0-21swapper/009:00:490
81660rcu_preempt31852-21munin-run07:45:130
81660rcu_preempt28777-21ntp_states12:20:480
81660rcu_preempt0-21swapper/012:16:230
81660rcu_preempt0-21swapper/009:12:260
81650rcu_preempt24958-21ssh11:15:320
81650rcu_preempt24940-21ssh12:15:081
81650rcu_preempt20892-21sh09:10:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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