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2026-06-02 - 10:17

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 Jun 02, 2026 00:44:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
550821300,1sleep00-21swapper/019:33:050
717421080,3sleep20-21swapper/222:32:562
717421080,3sleep20-21swapper/222:32:562
201932860,2sleep020196-21latency_hist23:07:550
158482850,4sleep015850-21grep20:02:560
158482850,4sleep015850-21grep20:02:560
137442740,2sleep113745-21df_inode19:57:541
137442740,2sleep113745-21df_inode19:57:541
45332680,3sleep20-21swapper/220:58:052
45332680,3sleep20-21swapper/220:58:052
111962680,4sleep011199-21latency_hist21:17:530
111962680,4sleep011199-21latency_hist21:17:530
85802650,8sleep0171ktimers/022:37:440
85802650,8sleep0171ktimers/022:37:440
220972650,2sleep20-21swapper/223:12:562
220972650,2sleep20-21swapper/223:12:562
255052640,2sleep00-21swapper/023:22:480
255052640,2sleep00-21swapper/023:22:480
160042620,3sleep30-21swapper/300:22:563
128162620,3chrt0-21swapper/321:22:103
128162620,3chrt0-21swapper/321:22:103
104552620,2sleep20-21swapper/221:13:042
104552620,2sleep20-21swapper/221:13:042
243042600,3sleep20-21swapper/221:52:522
210972590,3sleep20-21swapper/223:08:062
210972590,3sleep20-21swapper/223:08:062
208762570,3chrt0-21swapper/220:17:092
208762570,3chrt0-21swapper/220:17:092
232002560,2chrt0-21swapper/221:48:022
263472530,2chrt0-21swapper/221:57:552
263472530,2chrt0-21swapper/221:57:552
73342510,3chrt0-21swapper/322:32:573
73342510,3chrt0-21swapper/322:32:573
108782480,3sleep00-21swapper/000:08:010
108782480,3sleep00-21swapper/000:08:010
108782480,3sleep00-21swapper/000:08:010
83092460,3sleep20-21swapper/219:42:562
83092460,3sleep20-21swapper/219:42:562
31052460,3sleep20-21swapper/219:28:002
31052460,3sleep20-21swapper/219:28:002
250032460,2sleep20-21swapper/223:18:062
250032460,2sleep20-21swapper/223:18:062
69712450,3chrt6974-21needreboot23:58:000
69712450,3chrt6974-21needreboot23:58:000
36152450,3sleep30-21swapper/323:48:063
36152450,3sleep30-21swapper/323:48:063
167012430,2sleep20-21swapper/220:03:062
167012430,2sleep20-21swapper/220:03:062
217072410,3sleep30-21swapper/300:37:553
217072410,3sleep30-21swapper/300:37:553
29522400,2sleep20-21swapper/222:22:432
29522400,2sleep20-21swapper/222:22:432
29522400,2sleep20-21swapper/222:22:432
168882400,3sleep020341-21munin-node00:23:050
168882400,3sleep020341-21munin-node00:23:050
168882400,3sleep020341-21munin-node00:23:050
168882400,3sleep020341-21munin-node00:23:050
278342390,2sleep30-21swapper/322:02:423
278342390,2sleep30-21swapper/322:02:423
267552370,3sleep20-21swapper/220:32:532
267552370,3sleep20-21swapper/220:32:532
132052370,2sleep30-21swapper/300:13:073
132052370,2sleep30-21swapper/300:13:073
2935199363,27cyclictest8298-21df_inode00:02:541
2935199363,27cyclictest8298-21df_inode00:02:541
149352360,3sleep20-21swapper/222:52:582
149352360,3sleep20-21swapper/222:52:582
86512350,3chrt0-21swapper/200:02:572
86512350,3chrt0-21swapper/200:02:572
29345993529,4cyclictest22945-21latency_hist00:42:420
29345993529,4cyclictest22945-21latency_hist00:42:420
267382340,1sleep126845-21bingrep21:57:591
267382340,1sleep126845-21bingrep21:57:591
312522320,3sleep30-21swapper/320:43:023
312522320,3sleep30-21swapper/320:43:023
312522320,3sleep30-21swapper/320:43:023
29351993225,5cyclictest15471-21cron00:22:411
29351993225,5cyclictest15471-21cron00:22:411
29345993226,4cyclictest6083-21kernelversion21:02:570
29345993226,4cyclictest6083-21kernelversion21:02:570
29345993226,4cyclictest20489-21unixbench_singl20:13:040
29345993226,4cyclictest20489-21unixbench_singl20:13:040
29345993225,5cyclictest3004-21latency_hist22:22:470
29345993225,5cyclictest3004-21latency_hist22:22:470
29345993225,5cyclictest3004-21latency_hist22:22:470
29345993225,5cyclictest27774-21threads20:33:050
29345993225,5cyclictest27774-21threads20:33:050
29345993225,5cyclictest1346-21avahi-daemon00:02:570
29345993225,5cyclictest1346-21avahi-daemon00:02:570
29345993225,5cyclictest12576-21sshd21:19:100
29345993225,5cyclictest12576-21sshd21:19:100
29345993224,6cyclictest463-21idleruntime-cro23:42:440
29345993224,6cyclictest463-21idleruntime-cro23:42:440
29351993124,5cyclictest12386-21latency_hist22:47:471
29351993124,5cyclictest12386-21latency_hist22:47:471
29351993124,5cyclictest12386-21latency_hist22:47:471
29351993123,6cyclictest21651-21cron23:12:421
29351993123,6cyclictest21651-21cron23:12:421
29345993126,3cyclictest15349-21gltestperf21:27:570
29345993126,3cyclictest15349-21gltestperf21:27:570
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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