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2021-06-20 - 03:10

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 Sun Jun 20, 2021 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81780rcu_preempt19-21ksoftirqd/122:49:021
81750rcu_preempt22446-21diskstats00:02:201
81740rcu_preempt0-21swapper/019:08:340
81730rcu_preempt963-21ssh22:18:161
81730rcu_preempt25089-21ssh22:02:321
81720rcu_preempt5191-21interrupts19:32:241
81720rcu_preempt14342-21ssh22:43:291
81710rcu_preempt0-21swapper/121:02:041
81710rcu_preempt0-21swapper/019:27:240
81700rcu_preempt32007-21sh21:15:220
81700rcu_preempt15781-21ssh21:45:511
81700rcu_preempt0-21swapper/121:54:451
81700rcu_preempt0-21swapper/121:47:181
81700rcu_preempt0-21swapper/100:12:301
81690rcu_preempt26402-21sh22:06:110
81690rcu_preempt0-21swapper/123:56:461
81690rcu_preempt0-21swapper/121:16:561
81690rcu_preempt0-21swapper/100:28:071
81690rcu_preempt0-21swapper/023:12:190
81690rcu_preempt0-21swapper/021:44:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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