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2022-10-04 - 01:46

x86 Intel Xeon E3-1220L V2 @2300 MHz, Linux 4.18.7-rt5 (Profile)

Latency plot of system in rack #0, slot #1
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 rack0slot1.osadl.org (updated Tue Oct 04, 2022 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
275121400,2sleep02850699cyclictest18:59:160
2543521010,0sleep10-21swapper/121:51:561
182492980,0sleep343-21ksoftirqd/322:02:083
81812860,0sleep60-21swapper/600:16:536
5292820,0sleep60-21swapper/622:22:056
52642710,1sleep310171-21Poller-Thread-723:44:133
201132690,1sleep020098-21sshd23:24:160
81632670,1sleep38158-21snmpget23:06:163
134662670,2sleep72851499cyclictest19:58:117
26622650,4sleep343-21ksoftirqd/320:10:253
320722630,0sleep70-21swapper/720:26:557
168932630,1sleep779-21ksoftirqd/720:36:087
317552610,0sleep40-21swapper/420:08:184
140132610,0sleep10-21swapper/122:13:591
267932500,1sleep452-21ksoftirqd/420:23:164
2689424520,7sleep20-21swapper/218:55:512
28512994240,1cyclictest61-21ksoftirqd/519:23:165
2788224020,13sleep10-21swapper/118:56:381
28512993836,1cyclictest61-21ksoftirqd/521:33:385
2398023824,8sleep30-21swapper/318:53:273
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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