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2022-01-23 - 10:05

ARMv7 Processor rev 2 (v7l), Linux 5.10.47-rt46 (Profile)

Latency plot of system in rack #4, slot #2
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l50000000 -m -n -a0 -t1 -p99 -i400 -h400 -q
Total number of samples: 50 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 rack4slot2.osadl.org (updated Sun Jan 23, 2022 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
74501970,0irq/46-4a10000022899-21runrttasks19:01:120
233909910973,0cyclictest23411-21awk22:10:570
233909910879,0cyclictest21102-21df22:05:220
233909910870,0cyclictest22470-21cat20:35:010
233909910771,0cyclictest8938-21aten_r4power_en21:30:150
233909910771,0cyclictest28211-21nfs4_client19:15:500
233909910771,0cyclictest24336-21wget20:40:190
233909910681,0cyclictest6223-21irqstats00:30:400
233909910673,0cyclictest12332-21/usr/sbin/munin21:40:100
233909910672,0cyclictest29952-21ntp_kernel_pll_19:20:520
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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