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2026-06-20 - 21:29

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 Sat Jun 20, 2026 12:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2217321040,2sleep022174-21sed10:18:130
2217321040,2sleep022174-21sed10:18:130
291392750,2sleep30-21swapper/307:43:153
291392750,2sleep30-21swapper/307:43:153
291392750,2sleep30-21swapper/307:43:153
7822740,3sleep20-21swapper/207:53:192
7822740,3sleep20-21swapper/207:53:192
7822740,3sleep20-21swapper/207:53:192
126152660,2sleep30-21swapper/309:53:113
68082620,3sleep20-21swapper/212:28:202
68082620,3sleep20-21swapper/212:28:202
68082620,3sleep20-21swapper/212:28:202
107632580,3sleep00-21swapper/009:48:100
107632580,3sleep00-21swapper/009:48:100
107632580,3sleep00-21swapper/009:48:100
91462530,1sleep19149-21latency_hist08:18:031
91462530,1sleep19149-21latency_hist08:18:031
282492530,3sleep20-21swapper/209:08:122
282492530,3sleep20-21swapper/209:08:122
282492530,3sleep20-21swapper/209:08:122
249552520,3sleep20-21swapper/210:23:212
249552520,3sleep20-21swapper/210:23:212
249552520,3sleep20-21swapper/210:23:212
43602490,3sleep20-21swapper/210:58:112
43602490,3sleep20-21swapper/210:58:112
43602490,3sleep20-21swapper/210:58:112
324012490,3sleep20-21swapper/212:13:042
324012490,3sleep20-21swapper/212:13:042
324012490,3sleep20-21swapper/212:13:042
308542490,3sleep30-21swapper/309:13:193
308542490,3sleep30-21swapper/309:13:193
308542490,3sleep30-21swapper/309:13:193
151232490,3sleep20-21swapper/211:23:232
151232490,3sleep20-21swapper/211:23:232
3452480,2sleep20-21swapper/209:18:212
3452480,2sleep20-21swapper/209:18:212
78082470,3sleep00-21swapper/009:38:210
325022440,3sleep30-21swapper/309:18:183
325022440,3sleep30-21swapper/309:18:183
238892440,2sleep00-21swapper/010:23:120
238892440,2sleep00-21swapper/010:23:120
238892440,2sleep00-21swapper/010:23:120
274612430,2chrt0-21swapper/110:33:091
274612430,2chrt0-21swapper/110:33:091
274612430,2chrt0-21swapper/110:33:091
142082430,3chrt0-21swapper/009:58:030
142082430,3chrt0-21swapper/009:58:030
50142420,3sleep05004-21grep10:58:170
50142420,3sleep05004-21grep10:58:170
230982410,3sleep20-21swapper/210:18:232
230982410,3sleep20-21swapper/210:18:232
290942400,8sleep029099-21idleruntime-cro10:37:590
290942400,8sleep029099-21idleruntime-cro10:37:590
290942400,8sleep029099-21idleruntime-cro10:37:590
205192400,3sleep00-21swapper/008:48:080
205192400,3sleep00-21swapper/008:48:080
275802390,4sleep20-21swapper/209:05:142
275802390,4sleep20-21swapper/209:05:142
17492993928,8cyclictest25567-21netstat07:33:171
17492993928,8cyclictest25567-21netstat07:33:171
17492993928,8cyclictest25567-21netstat07:33:171
17491993831,5cyclictest23405-21sort11:48:090
17491993831,5cyclictest23405-21sort11:48:090
17491993831,5cyclictest23405-21sort11:48:090
75502360,2sleep00-21swapper/012:33:090
75502360,2sleep00-21swapper/012:33:090
75502360,2sleep00-21swapper/012:33:090
217122360,2chrt0-21swapper/208:48:222
217122360,2chrt0-21swapper/208:48:222
17492993630,4cyclictest729-21dbus-daemon11:38:201
17492993630,4cyclictest729-21dbus-daemon11:38:201
287042350,2sleep128705-21/usr/sbin/munin10:33:211
287042350,2sleep128705-21/usr/sbin/munin10:33:211
287042350,2sleep128705-21/usr/sbin/munin10:33:211
31472340,3chrt0-21swapper/210:53:162
31472340,3chrt0-21swapper/210:53:162
296892340,3chrt0-21swapper/210:38:132
296892340,3chrt0-21swapper/210:38:132
17492993424,8cyclictest27504-21missed_timers11:58:151
17492993424,8cyclictest27504-21missed_timers11:58:151
17492993424,8cyclictest21758-21unixbench_multi08:48:221
17492993424,8cyclictest21758-21unixbench_multi08:48:221
17492993419,8cyclictest90-1pr/ttyS009:45:291
17492993419,8cyclictest90-1pr/ttyS009:45:291
17492993419,8cyclictest90-1pr/ttyS009:45:291
7462330,3sleep20-21swapper/212:13:162
7462330,3sleep20-21swapper/212:13:162
7462330,3sleep20-21swapper/212:13:162
7462330,3sleep20-21swapper/212:13:162
312472330,1sleep10-21swapper/112:08:171
312472330,1sleep10-21swapper/112:08:171
312472330,1sleep10-21swapper/112:08:171
17491993324,7cyclictest30870-21fschecks_time12:08:140
17491993324,7cyclictest30870-21fschecks_time12:08:140
17491993324,7cyclictest30870-21fschecks_time12:08:140
17491993324,6cyclictest773-21apache208:01:380
111722330,2sleep0171ktimers/008:23:070
8482320,8sleep0171ktimers/010:48:120
8482320,8sleep0171ktimers/010:48:120
8482320,8sleep0171ktimers/010:48:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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