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2023-06-07 - 00:45

x86 AMD G-T48L @1400 MHz, 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 Tue Jun 06, 2023 12:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81810rcu_preempt8971-21irqstats07:05:550
81740rcu_preempt0-21swapper/107:06:551
81730rcu_preempt0-21swapper/112:20:471
81700rcu_preempt0-21swapper/111:20:541
81700rcu_preempt0-21swapper/107:40:561
81700rcu_preempt0-21swapper/012:21:040
81700rcu_preempt0-21swapper/010:41:070
81700rcu_preempt0-21swapper/009:45:580
81660rcu_preempt5215-21grep09:00:501
81660rcu_preempt0-21swapper/108:10:581
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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