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2025-11-03 - 07:40

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #5

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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  Phytec
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.

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 50 highest latencies:
System rackbslot5s.osadl.org (updated Mon Nov 03, 2025 00:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2744820995950,6cyclictest2776362-21kworker/u8:1+events_unbound20:40:133
2744820995950,6cyclictest2776362-21kworker/u8:1+events_unbound20:40:133
2744813995242,5cyclictest2769004-21sed20:15:271
2744817994835,8cyclictest311ktimers/223:05:162
2744820994537,5cyclictest2754317-21kworker/u8:3+events_unbound19:55:163
2744820994537,5cyclictest2754317-21kworker/u8:3+events_unbound19:55:163
2744809994533,8cyclictest151rcuc/020:40:140
2744809994533,8cyclictest151rcuc/020:40:130
2744817994433,6cyclictest2808480-21grep22:10:272
2744817994433,6cyclictest2808480-21grep22:10:272
2744817994431,10cyclictest311ktimers/222:30:192
2744817994423,15cyclictest0-21swapper/220:30:162
2744817994419,9cyclictest2844314-21/usr/sbin/munin23:55:212
2744817994419,10cyclictest2836729-21chrt23:34:072
2744817994415,11cyclictest2857520-21/usr/sbin/munin00:35:232
2744813994434,6cyclictest2858995-21cut00:39:591
2744809994436,4cyclictest2852172-21munin-plugin-st00:20:010
2744817994332,8cyclictest28506972sleep200:15:122
2744817994317,8cyclictest2747277-21apt-get19:15:142
2744817994316,9cyclictest2822538-21timerandwakeup22:50:252
2744813994333,7cyclictest2748281-21unixbench_multi19:15:261
2744817994224,3cyclictest2761589-21meminfo19:55:232
2744817994224,3cyclictest2761589-21meminfo19:55:232
2744817994216,9cyclictest2780088-21latency_hist20:50:002
2744809994234,5cyclictest2760896-21cron19:55:000
2744809994234,5cyclictest2760896-21cron19:55:000
2744817994125,12cyclictest2781411-21cron20:53:012
2744817994119,5cyclictest2856370-21ntpq00:30:242
2744817994119,5cyclictest2856370-21ntpq00:30:232
274480999418,6cyclictest131rcu_preempt23:00:150
2744809994131,4cyclictest0-21swapper/021:00:010
2744817994031,5cyclictest2803769-21munin-plugin-st22:00:012
2744817994026,11cyclictest2796193-21/usr/sbin/munin21:35:262
2744817994014,9cyclictest2766258-21/usr/sbin/munin20:10:182
2744817993929,5cyclictest2845590-21apt-get00:00:132
2744817993928,7cyclictest2840468-21/usr/sbin/munin23:45:302
2744817993925,11cyclictest2832284-21/usr/sbin/munin23:20:212
2744817993924,11cyclictest2854423-21if_eth000:25:192
2744817993920,14cyclictest2843217-21head23:50:262
2744817993920,14cyclictest2754012-21find19:35:012
2744817993916,7cyclictest2783439-21cat21:00:022
2744817993914,10cyclictest2820336-21ntpq22:45:232
2744813993932,4cyclictest2852175-21idleruntime-cro00:20:011
2744817993830,4cyclictest2825117-21apt-get23:00:142
2744817993827,7cyclictest2830668-21meminfo23:15:232
2744817993827,7cyclictest2830668-21meminfo23:15:222
2744817993826,9cyclictest2789870-21sshd21:17:102
2744817993826,7cyclictest2768303-21/usr/sbin/munin20:15:182
2744817993824,10cyclictest2771902-21/usr/sbin/munin20:25:182
2744817993821,11cyclictest0-21swapper/200:10:162
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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