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2025-12-09 - 08:51

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #8

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 100 highest latencies:
System rackeslot8s.osadl.org (updated Tue Dec 09, 2025 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22625819911370,1134cyclictest24169232sleep33
22625819911261,1121cyclictest2586701-21sleep3
22625819910921,1086cyclictest2689018-21sleep3
2262581999860,981cyclictest2473404-21sleep3
2262581992320,1cyclictest0-21swapper/33
2262581991916,1cyclictest0-21swapper/33
2262581991815,1cyclictest0-21swapper/33
2262581991815,1cyclictest0-21swapper/33
226258199181,13cyclictest2554302-21turbostat3
226258199166,8cyclictest2290243-21taskset3
2262581991613,1cyclictest0-21swapper/33
2262581991613,1cyclictest0-21swapper/33
2262581991613,1cyclictest0-21swapper/33
2262581991613,1cyclictest0-21swapper/33
226258199161,12cyclictest2268861-21turbostat3
226258199155,7cyclictest27191502sleep33
226258199155,7cyclictest2327979-21taskset3
226258199154,8cyclictest2321918-21taskset3
226258199152,10cyclictest2724788-21taskset3
2262581991513,1cyclictest0-21swapper/33
2262581991513,1cyclictest0-21swapper/33
2262581991513,1cyclictest0-21swapper/33
2262581991513,1cyclictest0-21swapper/33
2262581991512,1cyclictest0-21swapper/33
2262581991512,1cyclictest0-21swapper/33
2262581991512,1cyclictest0-21swapper/33
2262581991512,1cyclictest0-21swapper/33
226258199151,11cyclictest2703875-21turbostat3
226258199151,11cyclictest2570520-21turbostat3
226258199151,11cyclictest2309251-21turbostat3
226258199141,8cyclictest23473272sleep33
2262581991413,0cyclictest0-21swapper/33
2262581991412,1cyclictest0-21swapper/33
2262581991412,1cyclictest0-21swapper/33
2262581991412,1cyclictest0-21swapper/33
2262581991411,1cyclictest0-21swapper/33
2262581991411,1cyclictest0-21swapper/33
226258199141,10cyclictest2627363-21turbostat3
226258199141,10cyclictest2610017-21taskset3
226258199141,10cyclictest2511920-21taskset3
226258199141,10cyclictest2501109-21taskset3
226258199141,10cyclictest2492022-21chrt3
226258199141,10cyclictest2372685-21chrt3
226258199141,10cyclictest2334764-21taskset3
226258199140,11cyclictest2594699-21chrt3
226258199133,7cyclictest2447237-21taskset3
226258199131,9cyclictest2694642-21taskset3
2262581991312,0cyclictest0-21swapper/33
2262581991312,0cyclictest0-21swapper/33
2262581991311,1cyclictest0-21swapper/33
2262581991311,1cyclictest0-21swapper/33
2262581991311,1cyclictest0-21swapper/33
2262581991311,1cyclictest0-21swapper/33
226258199131,10cyclictest2457199-21turbostat3
2262581991311,0cyclictest0-21swapper/33
2262581991311,0cyclictest0-21swapper/33
2262581991311,0cyclictest0-21swapper/33
2262581991311,0cyclictest0-21swapper/33
2262581991310,1cyclictest0-21swapper/33
226258199130,10cyclictest2536190-21taskset3
26655582120,1sleep02665623-21ntp_states0
24643022121,3sleep02464310-21ssh0
24038542121,8sleep00-21swapper/00
226258199121,9cyclictest2652483-21taskset3
226258199121,9cyclictest2302764-21taskset3
226258199121,8cyclictest2736525-21taskset3
2262581991211,0cyclictest0-21swapper/33
226258199120,9cyclictest26764722sleep33
226258199120,9cyclictest2601112-21chrt3
226258199120,9cyclictest2397876-21chrt3
226258199120,9cyclictest2353647-21taskset3
190898120,8rtkit-daemon2719220-21ssh0
190898120,8rtkit-daemon2569660-21ssh0
190898120,5rtkit-daemon1928-21sendmail-mta0
24571712110,8sleep22457248-21cat2
24562252110,5sleep12456231-21ssh1
22624272111,6sleep22262453-21munin-run2
190898110,7rtkit-daemon2617748-21ssh0
190898110,7rtkit-daemon2545010-21ssh0
190898110,7rtkit-daemon2496048-21ssh0
190898110,7rtkit-daemon1-21systemd0
190898110,4rtkit-daemon2586646-21ssh0
26945142101,5sleep22694641-21python32
25374012100,7sleep22537410-21ssh2
24188812101,2sleep20-21swapper/22
24043952101,7sleep12404396-21/usr/sbin/munin1
23840142100,1sleep20-21swapper/22
190898100,6rtkit-daemon2736214-21cat0
190898100,6rtkit-daemon2525273-21kthreadcore0
190898100,6rtkit-daemon2504542-21sh0
190898100,5rtkit-daemon2641054-21ntp_states0
190898100,5rtkit-daemon2436310-21grep0
190898100,5rtkit-daemon2350134-21grep1
190898100,5rtkit-daemon2347087-21munin-run1
190898100,4rtkit-daemon421-21avahi-daemon1
190898100,3rtkit-daemon667-21snmpd0
190898100,3rtkit-daemon2269023-21munin-node0
2727270291,5sleep02727278-21ssh0
2719917290,7sleep12719924-21sh1
2704236291,5sleep02704387-21df0
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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