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2026-05-08 - 19:44

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, 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 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 rack7slot3s.osadl.org (updated Fri May 08, 2026 12:43:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2986221820,2sleep31847299cyclictest19:08:473
883321710,5sleep21847199cyclictest20:38:122
18469998854,28cyclictest0-21swapper/020:56:050
18469998854,28cyclictest0-21swapper/020:56:050
1846999875,19cyclictest14782-21ssh20:46:080
135772840,5sleep31847299cyclictest21:23:183
286732810,1sleep10-21swapper/121:01:461
18469998012,40cyclictest15829-21latency_hist19:30:560
311142790,2sleep00-21swapper/018:31:240
311142790,2sleep00-21swapper/018:31:240
18469997825,36cyclictest28635-21idleruntime-cro19:45:550
18469997816,43cyclictest18146-21fschecks_time20:11:120
18469997711,46cyclictest3289-21fschecks_count21:11:130
18469997710,13cyclictest29522-21wget17:01:090
204902760,2sleep20-21swapper/221:31:182
1846999758,54cyclictest0-21swapper/020:31:200
1846999729,44cyclictest32148-21sshd19:11:170
1846999729,41cyclictest10204-21wget18:46:090
1846999719,47cyclictest27295-21munin-run16:55:560
1846999713,52cyclictest19950-21grep18:56:240
1846999713,52cyclictest19950-21grep18:56:240
1846999712,58cyclictest18987-21ssh20:51:090
1846999701,50cyclictest8391-21cat21:56:150
1846999695,48cyclictest27223-21grep18:21:240
1846999692,58cyclictest908-21runrttasks20:45:390
1846999678,50cyclictest15757-21apt-get19:31:010
18469996748,10cyclictest0-21swapper/017:21:070
1846999669,47cyclictest0-21swapper/020:08:030
1846999667,48cyclictest0-21swapper/018:15:560
1846999665,50cyclictest917-21snmpd21:45:050
1846999664,49cyclictest0-21swapper/021:06:220
1846999664,44cyclictest1077-21fschecks_count19:51:130
1846999659,34cyclictest22213-21runrttasks18:10:560
1846999656,48cyclictest23193-21uniq19:01:110
1846999654,48cyclictest0-21swapper/020:16:180
1846999649,41cyclictest0-21swapper/017:40:550
1846999646,44cyclictest0-21swapper/016:56:200
1846999644,51cyclictest3044-21ssh21:50:230
18469996421,35cyclictest0-21swapper/021:51:060
1846999638,41cyclictest19394-21latency_hist21:30:560
1846999637,43cyclictest0-21swapper/019:48:210
1846999636,48cyclictest23602-21ssh19:39:360
1846999636,46cyclictest17364-21runrttasks18:54:160
1846999636,41cyclictest839-21rm20:28:500
1846999636,41cyclictest839-21rm20:28:500
1846999634,44cyclictest0-21swapper/019:25:200
1846999634,44cyclictest0-21swapper/019:25:200
18469996313,37cyclictest101ktimersoftd/017:46:190
1846999627,41cyclictest0-21swapper/019:19:490
1846999626,45cyclictest0-21swapper/021:22:330
1847099614,21cyclictest1092-21ntpd17:51:051
1846999604,43cyclictest908-21runrttasks19:58:320
1846999604,43cyclictest908-21runrttasks19:58:320
18469996040,15cyclictest18468-21cyclictest16:30:580
18469996012,44cyclictest101ktimersoftd/021:36:190
1846999596,42cyclictest0-21swapper/018:16:200
1846999596,35cyclictest16255-21seq17:51:350
18469995914,28cyclictest29701-21ssh19:08:310
1846999591,34cyclictest29038-21unixbench_singl18:26:230
18469995910,39cyclictest10133-21ssh21:19:340
18469995910,35cyclictest12956-21sh20:05:310
1846999589,35cyclictest28576-21ssh21:01:350
1846999585,35cyclictest3797-21mkdir18:37:530
274902570,2sleep20-21swapper/221:40:522
1846999575,34cyclictest12325-21grep17:41:210
1846999571,29cyclictest0-21swapper/021:31:060
1846999571,19cyclictest0-21swapper/020:36:070
18472995634,8cyclictest7950irq/56-dwc_otg_20:36:073
1846999568,37cyclictest0-21swapper/017:59:390
1846999566,28cyclictest30089-21chrt20:25:420
1846999556,25cyclictest0-21swapper/018:01:080
1846999553,41cyclictest0-21swapper/018:43:270
4052540,2sleep10-21swapper/121:06:541
18469995426,4cyclictest8927-21unixbench_multi17:31:230
1846999542,27cyclictest25265-21taskset16:48:280
1846999541,14cyclictest0-21swapper/017:15:560
1846999535,45cyclictest7306-21chrt17:27:400
1846999535,45cyclictest7306-21chrt17:27:400
18469995313,23cyclictest0-21swapper/016:41:060
214752520,2sleep20-21swapper/218:59:002
214752520,2sleep20-21swapper/218:59:002
1846999523,46cyclictest505-21rs:main0
18469995129,2cyclictest0-21swapper/016:36:050
1847099508,4cyclictest0-21swapper/119:21:061
1847099508,4cyclictest0-21swapper/119:21:061
1847099499,25cyclictest0-21swapper/117:11:071
1846999495,34cyclictest3650-21chrt17:17:060
1847099482,8cyclictest7750irq/56-dwc_otg18:36:081
18470994812,7cyclictest7850irq/56-dwc_otg_17:01:061
1847299471,35cyclictest18487-21ls18:55:563
1847199473,11cyclictest7950irq/56-dwc_otg_17:51:052
1847099468,25cyclictest0-21swapper/119:11:081
1847099468,24cyclictest0-21swapper/120:16:101
1847099467,25cyclictest0-21swapper/121:41:081
1847099463,24cyclictest0-21swapper/116:30:581
181872463,35sleep00-21swapper/016:30:500
1847299457,27cyclictest0-21swapper/317:21:073
1847299453,8cyclictest19581-21ssh21:31:063
1847099457,26cyclictest0-21swapper/118:21:071
1847099457,24cyclictest0-21swapper/118:31:091
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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