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2024-07-16 - 15:36

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #4

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 rack7slot4s.osadl.org (updated Tue Jul 16, 2024 00:45:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2472099702,53cyclictest13025-21ssh21:30:130
2472099613,38cyclictest2545-21ssh23:20:150
2473299604,48cyclictest3521-21ssh23:40:121
2472099492,11cyclictest131rcu_preempt21:35:110
2474899465,26cyclictest25866irq/58-eth022:10:163
2472099463,4cyclictest131rcu_preempt22:35:110
2474099454,10cyclictest131rcu_preempt00:10:102
24740994512,26cyclictest19639-21cat22:10:422
2473299454,29cyclictest28627-21ssh23:55:121
24732994538,5cyclictest11608-21diskmemload00:25:111
2472099453,35cyclictest25242-21ssh22:55:110
2473299434,32cyclictest629-21tcf-agent20:45:151
2474099408,22cyclictest27-21ksoftirqd/220:55:142
2473299404,28cyclictest11932-21ssh23:45:151
2472099401,29cyclictest4139-21ssh00:20:110
2474099382,28cyclictest24961-21ssh00:30:432
2474099373,26cyclictest261rcuc/200:00:122
2474099373,26cyclictest261rcuc/200:00:122
2474099373,17cyclictest7690-21ssh22:25:112
2474099372,18cyclictest5709-21ssh22:22:352
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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