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2025-04-05 - 19:57

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 100 highest latencies:
System rackeslot3s.osadl.org (updated Sat Apr 05, 2025 12:45:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
313819999160,6cyclictest37-21ksoftirqd/311:00:023
31380699912,45cyclictest131rcu_preempt10:45:020
31380699732,42cyclictest363-21snmpd08:10:500
313806997240,27cyclictest1-21systemd10:05:010
313819996939,20cyclictest235-21systemd-journal12:20:013
31381599663,20cyclictest323023-21grep10:10:022
31381199664,12cyclictest23-21ksoftirqd/110:15:011
313806996528,33cyclictest235-21systemd-journal12:37:360
313815996415,45cyclictest1-21systemd12:40:012
313811996418,12cyclictest23-21ksoftirqd/112:00:011
31380699631,9cyclictest313873-21latency_hist07:10:030
31380699631,9cyclictest313873-21latency_hist07:10:020
313811996220,12cyclictest23-21ksoftirqd/109:45:011
31380699622,5cyclictest323226-21sshd10:11:340
31380699621,2cyclictest0-21swapper/009:10:020
31380699621,2cyclictest0-21swapper/007:50:020
313815996123,33cyclictest327114-21latency_hist11:30:022
31381599612,18cyclictest322756-21cut10:05:002
31381599612,13cyclictest1-21systemd11:20:012
31381599612,13cyclictest1-21systemd11:20:012
313815996110,46cyclictest272-21dbus-daemon07:20:012
313815996032,24cyclictest317614-21/usr/sbin/munin08:25:012
313815996028,28cyclictest321082-21sed09:30:022
313815996015,40cyclictest326060-21sshd11:07:352
31381599601,18cyclictest325595-21true11:00:002
313815995928,27cyclictest314737-21sed07:25:042
31380699592,5cyclictest317663-21cat08:25:020
31380699591,2cyclictest0-21swapper/009:30:020
31380699591,2cyclictest0-21swapper/009:01:350
31380699591,2cyclictest0-21swapper/008:42:350
31381599582,16cyclictest324576-21munin-run10:40:022
31380699582,52cyclictest235-21systemd-journal08:20:000
31380699582,51cyclictest329430-21systemctl12:15:010
31380699581,10cyclictest325366-21latency_hist10:55:010
313815995722,31cyclictest327583-21sshd11:35:342
313811995711,9cyclictest23-21ksoftirqd/109:35:001
31380699572,16cyclictest329726-21wc12:20:020
31380699572,15cyclictest328536-21latency_hist11:55:030
31380699572,14cyclictest326633-21munin-run11:20:020
31380699572,14cyclictest326633-21munin-run11:20:010
313806995719,33cyclictest0-21swapper/011:10:000
31380699571,16cyclictest327118-21munin-run11:30:010
31380699571,16cyclictest318103-21modprobe08:35:000
31381599562,18cyclictest317849-21cron08:29:592
31381599562,16cyclictest321204-21munin-run09:35:002
31381599562,14cyclictest329175-21true12:10:012
31381599561,16cyclictest324895-21latency_hist10:45:012
31380699563,48cyclictest0-21swapper/011:00:000
313806995625,25cyclictest330476-21cat12:35:010
313806995622,30cyclictest329129-21latency_hist12:05:030
31380699562,14cyclictest313959-21modprobe07:10:020
31380699561,50cyclictest327873-21sshd11:43:350
31380699561,50cyclictest0-21swapper/009:18:360
31380699561,16cyclictest324270-21sshd10:34:360
31381599553,10cyclictest325410-21grep10:55:022
313815995529,23cyclictest319243-21latency_hist08:55:022
31381599552,14cyclictest320672-21modprobe09:20:362
313811995510,11cyclictest23-21ksoftirqd/108:55:001
31380699552,15cyclictest321907-21cat09:45:020
31380699551,9cyclictest325057-21latency_hist10:50:010
31380699551,2cyclictest0-21swapper/009:30:360
313806995511,38cyclictest16850irq/134-800000010:29:350
31381599543,7cyclictest315263-21cron07:40:012
31381599543,45cyclictest235-21systemd-journal09:15:012
31381599542,8cyclictest313994-21modprobe07:15:002
31381599542,14cyclictest316067-21munin-run07:55:012
31381599542,14cyclictest316067-21munin-run07:55:012
31381599541,14cyclictest318622-21sendmail-mta08:44:112
31381599541,11cyclictest321722-21sh09:44:592
31381199546,9cyclictest23-21ksoftirqd/109:25:001
31381199545,6cyclictest23-21ksoftirqd/111:55:001
31380699542,6cyclictest328651-21munin-run12:00:000
31380699542,47cyclictest314263-21munin-run07:20:000
31380699542,16cyclictest326436-21latency_hist11:15:020
31380699542,13cyclictest314849-21sed07:30:010
31380699541,7cyclictest1-21systemd08:10:020
31380699541,7cyclictest1-21systemd08:10:010
31380699541,6cyclictest322384-21cat09:55:030
31380699541,6cyclictest322384-21cat09:55:020
313806995415,34cyclictest12-21ksoftirqd/010:10:010
31380699541,14cyclictest316023-21sshd07:51:360
31380699541,14cyclictest316023-21sshd07:51:350
31380699541,12cyclictest329341-21latency_hist12:10:020
313819995336,13cyclictest235-21systemd-journal11:50:013
31381599534,45cyclictest330301-21latency_hist12:30:012
31381599533,45cyclictest328630-21cron12:00:002
313815995328,20cyclictest319385-21sh09:00:002
31381599532,6cyclictest319887-21sshd09:07:352
31381599532,11cyclictest325899-21wc11:05:022
31381599531,14cyclictest321990-21munin-run09:50:022
31381199533,12cyclictest23-21ksoftirqd/107:40:001
31380699533,44cyclictest323519-21munin-run10:20:010
313806995330,19cyclictest19050irq/34-mmc108:55:030
31380699532,6cyclictest328144-21munin-run11:50:000
31380699532,47cyclictest1-21systemd12:30:010
31380699532,44cyclictest321984-21true09:50:010
31380699532,44cyclictest315129-21latency_hist07:35:030
31380699532,14cyclictest316312-21munin-run07:59:590
31380699531,15cyclictest326882-21systemd-run11:25:000
31380699531,15cyclictest326882-21systemd-run11:25:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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