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2026-05-31 - 15:59

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 Sun May 31, 2026 12:44:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2155021080,6sleep0171ktimers/007:33:030
2155021080,6sleep0171ktimers/007:33:030
2934121070,3sleep00-21swapper/009:22:490
71612900,3sleep00-21swapper/009:48:020
71612900,3sleep00-21swapper/009:48:020
18602820,4chrt0-21swapper/309:33:013
18602820,4chrt0-21swapper/309:33:013
80232710,2sleep08025-21grep08:23:030
80232710,2sleep08025-21grep08:23:030
254272710,3chrt0-21swapper/312:03:003
254272710,3chrt0-21swapper/312:03:003
195942710,3sleep20-21swapper/207:28:022
195942710,3sleep20-21swapper/207:28:022
195942710,3sleep20-21swapper/207:28:022
138622700,3sleep30-21swapper/311:32:573
138622700,3sleep30-21swapper/311:32:573
138622700,3sleep30-21swapper/311:32:573
289002690,4chrt0-21swapper/007:53:000
289002690,4chrt0-21swapper/007:53:000
278052680,3sleep027806-21ls07:52:400
278052680,3sleep027806-21ls07:52:400
13752670,3sleep20-21swapper/208:07:542
13752670,3sleep20-21swapper/208:07:542
13752670,3sleep20-21swapper/208:07:542
265862610,3sleep20-21swapper/207:47:562
265862610,3sleep20-21swapper/207:47:562
232172580,3chrt23220-21wc07:38:010
125752540,3sleep0201rcuc/011:28:040
125752540,3sleep0201rcuc/011:28:040
274492490,3sleep20-21swapper/212:08:062
274492490,3sleep20-21swapper/212:08:062
274492490,3sleep20-21swapper/212:08:062
13200994919,12cyclictest20176-21taskset11:48:541
14322470,3chrt0-21swapper/312:27:523
14322470,3chrt0-21swapper/312:27:523
13200994720,17cyclictest12204-21seq08:37:191
206912460,4sleep20-21swapper/211:52:502
13200994532,11cyclictest11460-21sshd10:00:061
13200994532,11cyclictest11460-21sshd10:00:061
13200994521,10cyclictest9139-21taskset11:21:401
13200994520,7cyclictest1283-21/usr/sbin/munin09:32:551
13200994520,7cyclictest1283-21/usr/sbin/munin09:32:551
13200994520,16cyclictest7246-21taskset11:16:451
13200994520,16cyclictest7246-21taskset11:16:451
112722450,1sleep0171ktimers/008:33:000
13200994420,14cyclictest6463-21taskset08:20:541
13200994420,14cyclictest6463-21taskset08:20:541
13200994419,8cyclictest26070-21date07:47:461
13200994419,8cyclictest26070-21date07:47:461
13200994419,8cyclictest26070-21date07:47:461
13200994417,11cyclictest21294-21runrttasks08:58:411
125892440,3sleep20-21swapper/208:37:532
125892440,3sleep20-21swapper/208:37:532
301822430,3sleep00-21swapper/009:23:010
301822430,3sleep00-21swapper/009:23:010
301822430,3sleep00-21swapper/009:23:010
291372430,3sleep30-21swapper/310:47:553
291372430,3sleep30-21swapper/310:47:553
291372430,3sleep30-21swapper/310:47:553
233032430,3sleep1281ktimers/110:32:531
233032430,3sleep1281ktimers/110:32:531
13200994321,5cyclictest28154-21users10:43:041
13200994321,5cyclictest28154-21users10:43:041
13200994319,8cyclictest17243-21if_err_wlan007:22:531
13200994319,8cyclictest17243-21if_err_wlan007:22:531
13200994318,7cyclictest16620-21chrt11:41:191
13200994318,7cyclictest16620-21chrt11:41:191
13200994318,12cyclictest872-21taskset12:24:321
13200994318,12cyclictest872-21taskset12:24:321
13200994318,11cyclictest27608-21taskset12:08:261
13200994318,11cyclictest27608-21taskset12:08:261
13200994318,11cyclictest27608-21taskset12:08:261
13200994318,11cyclictest1585-21seq11:01:301
13200994318,11cyclictest1585-21seq11:01:301
13200994317,10cyclictest18983-21seq10:20:141
13200994317,10cyclictest18983-21seq10:20:141
13200994233,7cyclictest0-21swapper/110:55:081
13200994233,7cyclictest0-21swapper/110:55:081
13200994231,9cyclictest0-21swapper/111:11:561
13200994231,9cyclictest0-21swapper/111:11:561
13200994221,8cyclictest13868-21cat11:32:571
13200994221,8cyclictest13868-21cat11:32:571
13200994221,8cyclictest13868-21cat11:32:571
13200994221,7cyclictest19615-21seq08:56:041
13200994221,7cyclictest19615-21seq08:56:041
13200994220,5cyclictest20688-21users10:23:041
13200994220,5cyclictest20688-21users10:23:041
13200994220,10cyclictest17007-21taskset10:13:501
13200994220,10cyclictest17007-21taskset10:13:501
13200994220,10cyclictest17007-21taskset10:13:501
13200994217,11cyclictest749-21runrttasks09:17:021
13200994216,7cyclictest0-21swapper/109:40:251
13200994216,7cyclictest0-21swapper/109:40:251
13200994216,7cyclictest0-21swapper/109:40:251
13200994216,12cyclictest10056-21seq08:28:341
13200994216,12cyclictest10056-21seq08:28:341
13200994215,9cyclictest12527-21sed11:28:031
13200994215,9cyclictest12527-21sed11:28:031
13200994119,9cyclictest9692-21taskset09:56:171
13200994119,8cyclictest22818-21chrt10:31:241
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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