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2026-06-14 - 11:28

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 Jun 14, 2026 00:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1769921140,1sleep00-21swapper/000:28:100
1769921140,1sleep00-21swapper/000:28:100
1742621020,2chrt17428-21sed20:08:091
1742621020,2chrt17428-21sed20:08:091
99432840,3chrt0-21swapper/319:48:103
99432840,3chrt0-21swapper/319:48:103
198442730,2sleep00-21swapper/023:08:060
198442730,2sleep00-21swapper/023:08:060
198442730,2sleep00-21swapper/023:08:060
265352720,2chrt26534-21sendmail_mailtr21:58:161
265352720,2chrt26534-21sendmail_mailtr21:58:161
224092650,3chrt0-21swapper/300:42:533
224092650,3chrt0-21swapper/300:42:533
46742630,2sleep00-21swapper/021:02:530
46742630,2sleep00-21swapper/021:02:530
154512630,2chrt0-21swapper/300:23:073
154512630,2chrt0-21swapper/300:23:073
108472630,2sleep30-21swapper/322:43:143
108472630,2sleep30-21swapper/322:43:143
108472630,2sleep30-21swapper/322:43:143
228442620,2sleep022944-21latency20:23:090
228442620,2sleep022944-21latency20:23:090
228442620,2sleep022944-21latency20:23:090
216722600,2chrt0-21swapper/021:47:540
216722600,2chrt0-21swapper/021:47:540
216722600,2chrt0-21swapper/021:47:540
318462550,2sleep031849-21grep23:38:170
318462550,2sleep031849-21grep23:38:170
318462550,2sleep031849-21grep23:38:170
263082550,3chrt0-21swapper/020:33:050
263082550,3chrt0-21swapper/020:33:050
310512540,3sleep20-21swapper/220:43:162
310512540,3sleep20-21swapper/220:43:162
183832540,4sleep00-21swapper/021:38:050
172042530,3sleep30-21swapper/321:33:143
172042530,3sleep30-21swapper/321:33:143
75492520,5sleep30-21swapper/300:03:023
75492520,5sleep30-21swapper/300:03:023
75492520,5sleep30-21swapper/300:03:023
5692510,3sleep30-21swapper/322:18:003
5692510,3sleep30-21swapper/322:18:003
31412480,1sleep3431rcuc/320:58:043
31412480,1sleep3431rcuc/320:58:043
275662470,2chrt0-21swapper/322:03:053
275662470,2chrt0-21swapper/322:03:053
262312470,7sleep026234-21sort21:58:110
262312470,7sleep026234-21sort21:58:110
23222430,1sleep02356-21latency_hist22:22:530
23222430,1sleep02356-21latency_hist22:22:530
23222430,1sleep02356-21latency_hist22:22:530
163912430,3sleep20-21swapper/221:33:052
163912430,3sleep20-21swapper/221:33:052
292162410,4sleep028759-21/usr/sbin/munin23:33:070
292162410,4sleep028759-21/usr/sbin/munin23:33:070
292162410,4sleep028759-21/usr/sbin/munin23:33:070
187772410,2sleep00-21swapper/021:38:090
187772410,2sleep00-21swapper/021:38:090
187772410,2sleep00-21swapper/021:38:090
187772410,2sleep00-21swapper/021:38:090
2885499381,28cyclictest7539-21chrt00:03:002
2885499381,28cyclictest7539-21chrt00:03:002
2885499381,28cyclictest7539-21chrt00:03:002
2885299381,29cyclictest7738-21entropy00:03:061
2885299381,29cyclictest7738-21entropy00:03:061
2885299371,29cyclictest8222-21memory00:03:101
2885299371,29cyclictest8222-21memory00:03:101
2885299371,29cyclictest8222-21memory00:03:101
50252360,2sleep20-21swapper/222:28:092
50252360,2sleep20-21swapper/222:28:092
28851993631,3cyclictest12257-21cron21:22:530
28851993631,3cyclictest12257-21cron21:22:530
28851993629,5cyclictest5293-21cron19:37:530
28851993629,5cyclictest5293-21cron19:37:530
86132350,2sleep20-21swapper/200:03:162
86132350,2sleep20-21swapper/200:03:162
86132350,2sleep20-21swapper/200:03:162
313482350,7sleep031325-21cat22:13:030
313482350,7sleep031325-21cat22:13:030
28851993529,4cyclictest0-21swapper/000:03:380
28851993529,4cyclictest0-21swapper/000:03:380
28851993529,4cyclictest0-21swapper/000:03:380
158442350,3sleep20-21swapper/220:03:122
158442350,3sleep20-21swapper/220:03:122
28851993429,3cyclictest0-21swapper/000:02:590
28851993429,3cyclictest0-21swapper/000:02:590
28851993429,3cyclictest0-21swapper/000:02:590
28851993428,4cyclictest572-21cups-browsed22:58:130
28851993428,4cyclictest572-21cups-browsed22:58:130
28851993428,4cyclictest1346-21avahi-daemon22:33:150
28851993428,4cyclictest1346-21avahi-daemon22:33:150
28852993328,3cyclictest27252-21gltestperf23:28:061
28852993328,3cyclictest27252-21gltestperf23:28:061
28852993328,3cyclictest27252-21gltestperf23:28:061
28852993326,5cyclictest17349-21latency_hist23:02:531
28852993326,5cyclictest17349-21latency_hist23:02:531
28852993324,7cyclictest30438-21cron23:37:531
28852993324,7cyclictest30438-21cron23:37:531
28852993324,7cyclictest30438-21cron23:37:531
28851993326,5cyclictest2487-21kernelversion23:48:090
28851993326,5cyclictest2487-21kernelversion23:48:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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