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2023-06-10 - 08:55

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 Sat Jun 10, 2023 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24362996461,2cyclictest43-21ksoftirqd/323:56:593
24359996260,1cyclictest9-21ksoftirqd/000:11:420
24359996260,1cyclictest9-21ksoftirqd/000:11:420
24364996057,1cyclictest61-21ksoftirqd/523:42:265
24360996057,2cyclictest25-21ksoftirqd/123:42:261
24364995755,1cyclictest61-21ksoftirqd/523:56:595
24359995753,3cyclictest9-21ksoftirqd/023:56:590
24367995653,2cyclictest70-21ksoftirqd/623:42:266
24361995654,1cyclictest34-21ksoftirqd/223:56:592
24360995653,2cyclictest25-21ksoftirqd/123:56:591
24378995546,7cyclictest79-21ksoftirqd/723:42:267
24363995350,2cyclictest52-21ksoftirqd/423:42:264
24359995249,2cyclictest9-21ksoftirqd/000:16:400
24359995247,4cyclictest9-21ksoftirqd/023:42:260
24367995148,1cyclictest70-21ksoftirqd/623:57:006
24363995147,2cyclictest52-21ksoftirqd/423:57:004
24378994643,2cyclictest79-21ksoftirqd/723:57:007
24361994543,1cyclictest34-21ksoftirqd/200:16:402
24378994340,2cyclictest79-21ksoftirqd/700:11:427
24378994340,2cyclictest79-21ksoftirqd/700:11:427
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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