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2023-01-29 - 07:14

ARM TI AM3354 @800 MHz, 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 20 highest latencies:
System rack4slot2.osadl.org (updated Sun Jan 29, 2023 00:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
73502540,0irq/45-4a10000021269-21kworker/0:119:04:100
216132920,0sleep018745-1kworker/u3:222:08:500
7350900,0irq/45-4a1000009296-21/usr/sbin/munin23:08:310
109832900,0sleep06684-1kworker/u3:223:13:590
23180998964,0cyclictest0-21swapper20:32:500
23180998959,0cyclictest0-21swapper20:40:250
7350880,0irq/45-4a10000023002-21meminfo22:13:380
7350870,0irq/45-4a10000030732-1kworker/u3:122:56:580
7450860,0irq/46-4a1000008577-21/usr/sbin/munin19:58:110
7450860,0irq/46-4a1000003564-21runrttasks21:18:040
7450860,0irq/46-4a10000029564-21sshd22:33:160
7450860,0irq/46-4a10000021789-21seq20:35:060
7350860,0irq/45-4a10000023868-1kworker/u3:020:46:150
286392860,0chrt25824-1kworker/u3:122:29:010
22612867,0sleep02281-21fw_conntrack21:13:270
7450850,0irq/46-4a10000032565-21chrt21:08:020
7450850,0irq/46-4a10000031980-21mailstats22:39:520
7450850,0irq/46-4a10000016566-21grep21:53:530
7450850,0irq/46-4a10000012298-21/usr/sbin/munin21:43:110
7450850,0irq/46-4a10000012223-21df_abs20:08:100
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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