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2024-07-27 - 08:04

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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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.

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 Sat Jul 27, 2024 00:45:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
993321997233,34cyclictest275-21dbus-daemon00:00:001
993326996920,10cyclictest30-21ksoftirqd/223:25:012
993326996917,11cyclictest30-21ksoftirqd/223:55:012
993326996816,13cyclictest30-21ksoftirqd/219:10:012
99332199684,4cyclictest131rcu_preempt00:20:031
99332199684,4cyclictest131rcu_preempt00:20:031
99332199672,28cyclictest996335-21munin-run20:09:591
993321996625,10cyclictest23-21ksoftirqd/122:25:011
993321996625,10cyclictest23-21ksoftirqd/122:25:001
993321996428,12cyclictest1003163-21sed22:20:021
993326996113,10cyclictest30-21ksoftirqd/219:35:002
993330995838,15cyclictest1-21systemd19:30:003
993326995815,8cyclictest30-21ksoftirqd/221:15:012
993326995719,10cyclictest209-21jbd2/mmcblk1p2-00:00:012
99333099556,6cyclictest131rcu_preempt21:17:183
99331699558,31cyclictest19350irq/34-mmc119:40:020
993330995413,6cyclictest131rcu_preempt23:00:003
993326995414,28cyclictest993311-21cyclictest21:20:022
993326995312,8cyclictest30-21ksoftirqd/219:55:012
993321995336,13cyclictest1-21systemd23:40:011
993316995312,8cyclictest131rcu_preempt20:00:000
993330995234,14cyclictest237-21systemd-journal22:40:003
99332199513,3cyclictest131rcu_preempt22:45:031
99331699514,18cyclictest131rcu_preempt19:45:020
993316995137,10cyclictest1-21systemd22:10:010
993316995137,10cyclictest1-21systemd22:10:010
99333099508,5cyclictest131rcu_preempt00:40:013
99333099496,5cyclictest131rcu_preempt19:20:003
993326994910,7cyclictest30-21ksoftirqd/220:45:002
993321994935,10cyclictest312-21in:imuxsock23:05:031
99331699492,16cyclictest1003690-21grep22:30:010
993326994829,12cyclictest275-21dbus-daemon20:30:002
993321994836,7cyclictest1008662-21munin-plugin-st00:10:001
993330994722,21cyclictest361rcuc/321:30:013
993326994727,14cyclictest275-21dbus-daemon00:15:012
993316994730,13cyclictest237-21systemd-journal21:55:010
99333099463,40cyclictest361rcuc/321:40:023
993330994627,16cyclictest275-21dbus-daemon20:00:013
993326994630,12cyclictest1005035-21sshd22:55:172
993326994628,14cyclictest1009416-21sshd00:21:212
993326994627,15cyclictest1003010-21sshd22:19:182
993321994628,14cyclictest275-21dbus-daemon22:50:011
993321994627,14cyclictest275-21dbus-daemon20:40:011
993321994625,14cyclictest237-21systemd-journal20:30:001
99332199462,10cyclictest999973-21modprobe21:20:011
993316994631,10cyclictest275-21dbus-daemon19:25:010
993316994627,15cyclictest1-21systemd19:15:000
99333099454,6cyclictest131rcu_preempt00:00:003
993330994532,10cyclictest275-21dbus-daemon20:35:023
99332699453,7cyclictest30-21ksoftirqd/219:50:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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