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2026-06-08 - 03:44

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 Mon Jun 08, 2026 00:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2580121100,2chrt25802-21/usr/sbin/munin22:33:080
2580121100,2chrt25802-21/usr/sbin/munin22:33:080
914221060,9sleep0171ktimers/020:23:030
914221060,9sleep0171ktimers/020:23:030
2711821000,2sleep30-21swapper/300:03:163
2711821000,2sleep30-21swapper/300:03:163
187821000,2sleep01876-21ntp_states20:03:090
187821000,2sleep01876-21ntp_states20:03:090
107702970,12sleep0201rcuc/023:19:470
107702970,12sleep0201rcuc/023:19:470
107702970,12sleep0201rcuc/023:19:470
31412960,3sleep20-21swapper/200:27:592
31412960,3sleep20-21swapper/200:27:592
28362960,3sleep30-21swapper/320:07:503
28362960,3sleep30-21swapper/320:07:503
280282960,1sleep028030-21latency_hist00:07:550
280282960,1sleep028030-21latency_hist00:07:550
275552950,2sleep00-21swapper/019:46:250
275552950,2sleep00-21swapper/019:46:250
275552950,2sleep00-21swapper/019:46:250
219692950,2chrt21968-21ntpq22:23:070
219692950,2chrt21968-21ntpq22:23:070
219692950,2chrt21968-21ntpq22:23:070
54842940,2sleep15488-21missed_timers20:13:031
54842940,2sleep15488-21missed_timers20:13:031
143782930,3sleep30-21swapper/322:03:043
143782930,3sleep30-21swapper/322:03:043
326092920,3sleep30-21swapper/322:53:013
326092920,3sleep30-21swapper/322:53:013
326092920,3sleep30-21swapper/322:53:013
281272910,4sleep30-21swapper/321:13:073
281272910,4sleep30-21swapper/321:13:073
281272910,4sleep30-21swapper/321:13:073
10092840,1sleep30-21swapper/320:02:523
10092840,1sleep30-21swapper/320:02:523
259942830,2chrt0-21swapper/300:02:473
259942830,2chrt0-21swapper/300:02:473
23572780,3sleep3431rcuc/321:32:573
23572780,3sleep3431rcuc/321:32:573
210322760,2chrt0-21swapper/222:22:492
210322760,2chrt0-21swapper/222:22:492
210322760,2chrt0-21swapper/222:22:492
271302730,3sleep30-21swapper/322:38:013
271302730,3sleep30-21swapper/322:38:013
79432680,3sleep30-21swapper/323:13:033
79432680,3sleep30-21swapper/323:13:033
221482640,7sleep1281ktimers/120:58:011
221482640,7sleep1281ktimers/120:58:011
153762630,3sleep30-21swapper/323:33:013
124162610,3sleep30-21swapper/323:23:123
124162610,3sleep30-21swapper/323:23:123
321472600,1chrt0-21swapper/019:58:020
321472600,1chrt0-21swapper/019:58:020
198802570,3sleep00-21swapper/023:43:110
198802570,3sleep00-21swapper/023:43:110
198802570,3sleep00-21swapper/023:43:110
42832540,3sleep20-21swapper/200:28:112
42832540,3sleep20-21swapper/200:28:112
169402480,3sleep20-21swapper/219:18:002
113432480,4sleep30-21swapper/323:23:003
113432480,4sleep30-21swapper/323:23:003
295132470,3sleep30-21swapper/321:18:013
295132470,3sleep30-21swapper/321:18:013
136092470,3sleep30-21swapper/323:28:023
71992460,2sleep30-21swapper/300:38:013
224092450,3sleep022403-21gzip20:58:040
224092450,3sleep022403-21gzip20:58:040
194202450,3sleep20-21swapper/223:43:052
194202450,3sleep20-21swapper/223:43:052
194202450,3sleep20-21swapper/223:43:052
213612420,3sleep20-21swapper/219:28:092
213612420,3sleep20-21swapper/219:28:092
1528899425,26cyclictest26122-21date00:02:530
1528899425,26cyclictest26122-21date00:02:530
130922400,3sleep20-21swapper/220:33:062
130922400,3sleep20-21swapper/220:33:062
235272390,4sleep023531-21head19:33:100
235272390,4sleep023531-21head19:33:100
205462390,3sleep20-21swapper/220:53:042
205462390,3sleep20-21swapper/220:53:042
15288993932,5cyclictest15286-21cyclictest21:32:480
15288993932,5cyclictest15286-21cyclictest21:32:480
15290993830,3cyclictest0-21swapper/221:53:182
15290993830,3cyclictest0-21swapper/221:53:182
15288993829,7cyclictest28810-21netstat00:08:070
15288993829,7cyclictest28810-21netstat00:08:070
15288993829,7cyclictest28810-21netstat00:08:070
253762370,4chrt25265-21latency_hist21:07:530
253762370,4chrt25265-21latency_hist21:07:530
15289993724,4cyclictest27115-21grep00:03:161
15289993724,4cyclictest27115-21grep00:03:161
137002370,2sleep013722-21latency_hist22:02:580
68502360,4chrt0-21swapper/221:43:052
68502360,4chrt0-21swapper/221:43:052
232432350,2sleep30-21swapper/323:53:073
232432350,2sleep30-21swapper/323:53:073
232432350,2sleep30-21swapper/323:53:073
15288993529,4cyclictest1346-21avahi-daemon20:48:080
15288993529,4cyclictest1346-21avahi-daemon20:48:080
142072350,4sleep20-21swapper/223:28:092
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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