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2026-05-19 - 20:24

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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.

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 rack4slot1s.osadl.org (updated Tue May 19, 2026 12:44:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1811421080,4sleep017707-21/usr/sbin/munin09:22:420
1811421080,4sleep017707-21/usr/sbin/munin09:22:420
26952870,2sleep20-21swapper/211:32:522
26952870,2sleep20-21swapper/211:32:522
25852810,2sleep02586-21/usr/sbin/munin10:07:440
25852810,2sleep02586-21/usr/sbin/munin10:07:440
25852810,2sleep02586-21/usr/sbin/munin10:07:440
263352760,4sleep026336-21latency_hist11:12:360
263352760,4sleep026336-21latency_hist11:12:360
278222610,2chrt27018-21/usr/sbin/munin09:47:500
278222610,2chrt27018-21/usr/sbin/munin09:47:500
278222610,2chrt27018-21/usr/sbin/munin09:47:500
282012540,3sleep30-21swapper/312:42:443
282012540,3sleep30-21swapper/312:42:443
282012540,3sleep30-21swapper/312:42:443
176682540,2sleep30-21swapper/309:22:373
176682540,2sleep30-21swapper/309:22:373
300972520,2sleep00-21swapper/011:22:330
300972520,2sleep00-21swapper/011:22:330
300972520,2sleep00-21swapper/011:22:330
213512500,3sleep00-21swapper/012:22:510
213512500,3sleep00-21swapper/012:22:510
146399411,11cyclictest15186-21latency_hist10:42:360
146399411,11cyclictest15186-21latency_hist10:42:360
1463994016,22cyclictest17616-21kernelversion10:47:450
1463994016,22cyclictest17616-21kernelversion10:47:450
1463994016,22cyclictest17616-21kernelversion10:47:450
1463994015,23cyclictest0-21swapper/011:12:510
1463994015,23cyclictest0-21swapper/011:12:510
146399401,13cyclictest15253-21ntpq07:47:490
146399401,13cyclictest15253-21ntpq07:47:490
1463993915,21cyclictest0-21swapper/011:37:500
1463993915,21cyclictest0-21swapper/011:37:500
146399391,12cyclictest6998-21/usr/sbin/munin07:27:450
146399391,12cyclictest6998-21/usr/sbin/munin07:27:450
1463993814,22cyclictest0-21swapper/010:44:460
1463993814,22cyclictest0-21swapper/010:44:460
1463993814,22cyclictest0-21swapper/010:44:460
1463993813,2cyclictest0-21swapper/009:37:440
1463993813,2cyclictest0-21swapper/009:37:440
146399381,11cyclictest14024-21ls09:12:410
1463993810,3cyclictest0-21swapper/008:24:360
1463993810,3cyclictest0-21swapper/008:24:360
1464993728,7cyclictest14656-21netstat09:12:471
146399377,6cyclictest3312-21cut11:37:370
146399377,6cyclictest3312-21cut11:37:370
146399371,13cyclictest9790-21tune2fs10:27:430
146399371,13cyclictest9790-21tune2fs10:27:430
146399371,13cyclictest9790-21tune2fs10:27:430
146399371,12cyclictest749-21runrttasks08:12:180
146399371,12cyclictest749-21runrttasks08:12:180
82882360,2sleep18395-21bingrep10:22:451
82882360,2sleep18395-21bingrep10:22:451
146399362,10cyclictest749-21runrttasks11:52:520
146399362,10cyclictest749-21runrttasks11:52:520
146399362,10cyclictest16529-21/usr/sbin/munin12:12:530
146399362,10cyclictest16529-21/usr/sbin/munin12:12:530
146399361,9cyclictest5110-21/usr/sbin/munin07:22:420
146399361,12cyclictest30647-21grep09:57:360
146399361,12cyclictest30647-21grep09:57:360
146399361,11cyclictest18708-21grep12:17:440
146399361,10cyclictest14678-21systemd-journal11:47:020
146399361,10cyclictest14678-21systemd-journal11:47:020
146399360,12cyclictest19956-21latency_hist08:02:310
146399360,12cyclictest19956-21latency_hist08:02:310
1464993527,6cyclictest5246-21netstat08:47:471
1464993527,6cyclictest5246-21netstat08:47:471
1464993527,6cyclictest14391-21threads10:37:531
1464993527,6cyclictest14391-21threads10:37:531
1463993516,17cyclictest0-21swapper/012:37:470
1463993515,18cyclictest0-21swapper/009:57:500
146399351,11cyclictest749-21runrttasks10:03:500
146399351,11cyclictest749-21runrttasks10:03:500
146399351,11cyclictest749-21runrttasks10:03:500
146399351,11cyclictest6408-21/usr/sbin/munin08:52:440
146399351,11cyclictest6408-21/usr/sbin/munin08:52:440
146399351,11cyclictest32448-21idleruntime11:27:430
146399351,11cyclictest29464-21/usr/sbin/munin08:27:440
146399351,11cyclictest29464-21/usr/sbin/munin08:27:440
146399351,11cyclictest12509-21latency_hist07:42:340
146399351,11cyclictest12509-21latency_hist07:42:340
146399351,11cyclictest11268-21sed11:57:450
146399351,11cyclictest11268-21sed11:57:450
146399351,10cyclictest9380-21grep07:32:440
146399351,10cyclictest9380-21grep07:32:440
146399351,10cyclictest31324-21/usr/sbin/munin08:32:420
146399351,10cyclictest31324-21/usr/sbin/munin08:32:420
146399351,10cyclictest27674-21/usr/sbin/munin12:42:410
146399351,10cyclictest27674-21/usr/sbin/munin12:42:410
146399351,10cyclictest27674-21/usr/sbin/munin12:42:410
146399351,10cyclictest14678-21systemd-journal09:12:300
293472340,2chrt0-21swapper/309:52:443
293472340,2chrt0-21swapper/309:52:443
1464993417,3cyclictest90-1pr/ttyS011:32:511
1464993417,3cyclictest90-1pr/ttyS011:32:511
146399341,13cyclictest31293-21ls11:22:510
146399341,13cyclictest31293-21ls11:22:510
146399341,13cyclictest20796-21grep09:27:520
146399341,13cyclictest20796-21grep09:27:520
146399341,12cyclictest749-21runrttasks12:02:450
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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