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2023-05-30 - 20:32

x86 Intel Xeon E3-1220L V2 @2300 MHz, Linux 4.4.39-rt50+ (Profile)

Latency plot of system in rack #7, slot #0
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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
Characteristics of the 20 highest latencies:
System rack7slot0.osadl.org (updated Tue May 30, 2023 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
117950600,0irq/26-eth1-rx-0-21swapper/307:05:543
110050580,0irq/25-eth00-21swapper/107:05:541
9950390,0irq/24-0000:00:0-21swapper/007:05:050
2433523823,0sleep20-21swapper/207:08:112
2474999190,0cyclictest9130-21sshd10:26:061
24751991716,0cyclictest0-21swapper/310:43:003
110050160,0irq/25-eth020365-21sshd10:01:180
24751991512,0cyclictest110050irq/25-eth009:49:553
24749991512,0cyclictest32233-21sshd12:03:571
2474999151,0cyclictest0-21swapper/110:49:381
2474999150,0cyclictest0-21swapper/111:56:041
24748991514,0cyclictest0-21swapper/012:31:090
24748991514,0cyclictest0-21swapper/007:35:250
41140,0ktimersoftd/00-21swapper/010:32:050
24751991411,0cyclictest11433-21sshd09:24:573
24750991413,0cyclictest0-21swapper/210:36:562
24750991412,0cyclictest0-21swapper/209:50:492
2475099140,0cyclictest0-21swapper/210:48:332
24749991411,0cyclictest0-21swapper/111:31:411
24748991413,0cyclictest28785-21bash10:28:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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