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2025-04-03 - 15:47

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #3

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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Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackeslot3s.osadl.org (updated Thu Apr 03, 2025 00:45:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
800699736,4cyclictest131rcu_preempt22:40:023
8006997216,14cyclictest14383-21latency_hist21:15:013
8006997013,18cyclictest21975-21cat23:40:033
8006996812,16cyclictest10778-21systemd-run20:05:003
8006996716,13cyclictest21730-21cat23:35:033
7996996615,28cyclictest12-21ksoftirqd/019:25:010
7996996615,28cyclictest12-21ksoftirqd/019:25:010
8006996513,15cyclictest22646-21sed23:55:023
8006996211,16cyclictest19697-21sed22:55:013
8006996210,16cyclictest9214-21latency_hist19:35:023
8006996115,15cyclictest15648-21/usr/sbin/munin21:40:023
8006995911,17cyclictest21233-21sed23:25:023
800099593,40cyclictest221rcuc/100:15:031
8006995814,14cyclictest24527-21wc00:30:023
8006995814,14cyclictest24527-21wc00:30:013
8006995811,14cyclictest0-21swapper/319:10:023
8000995820,23cyclictest0-21swapper/120:55:021
7996995848,7cyclictest12-21ksoftirqd/023:10:010
800699575,14cyclictest1-21systemd22:50:013
8000995636,15cyclictest1-21systemd22:25:021
8006995512,13cyclictest20294-21cut23:10:013
8006995510,16cyclictest22038-21modprobe23:40:023
8000995437,13cyclictest1-21systemd19:50:001
799699546,10cyclictest12-21ksoftirqd/021:55:020
799699546,10cyclictest12-21ksoftirqd/021:55:010
7996995413,36cyclictest12-21ksoftirqd/019:50:010
8006995336,13cyclictest1-21systemd00:40:013
8006995331,17cyclictest16379-21sshd21:50:353
8006995331,17cyclictest16379-21sshd21:50:343
8006995236,12cyclictest1-21systemd00:05:003
8006995235,13cyclictest15357-21sshd21:30:343
8003995233,14cyclictest1-21systemd23:00:002
8000995234,13cyclictest1-21systemd21:10:011
8000995234,13cyclictest1-21systemd21:10:001
8006995143,4cyclictest37-21ksoftirqd/322:15:023
8006995137,11cyclictest12806-21sshd20:44:273
8006995134,13cyclictest21296-21munin-run23:30:003
8006995132,13cyclictest24679-21munin-run00:34:593
799699519,8cyclictest12-21ksoftirqd/021:35:000
799699518,6cyclictest12-21ksoftirqd/022:25:000
799699516,10cyclictest12-21ksoftirqd/000:25:010
799699512,9cyclictest12-21ksoftirqd/022:20:010
7996995113,8cyclictest12-21ksoftirqd/021:30:020
8006995032,15cyclictest17154-21sshd22:05:343
8006995023,23cyclictest15923-21true21:45:013
799699505,9cyclictest12-21ksoftirqd/020:55:020
799699505,9cyclictest12-21ksoftirqd/020:55:010
7996995041,6cyclictest12-21ksoftirqd/000:35:000
7996995033,12cyclictest1-21systemd20:05:000
799699501,7cyclictest0-21swapper/021:10:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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