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2026-08-05 - 12:55

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 Wed Aug 05, 2026 00:44:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2340021210,3chrt0-21swapper/221:33:532
2340021210,3chrt0-21swapper/221:33:532
820921120,2chrt0-21swapper/220:53:532
820921120,2chrt0-21swapper/220:53:532
1863021110,3sleep20-21swapper/219:53:552
1863021110,3sleep20-21swapper/219:53:552
1027621050,3sleep20-21swapper/220:58:562
1027621050,3sleep20-21swapper/220:58:562
1949521000,3sleep20-21swapper/221:23:522
169532990,3sleep20-21swapper/219:48:572
169532990,3sleep20-21swapper/219:48:572
291992920,3sleep20-21swapper/221:48:532
291992920,3sleep20-21swapper/221:48:532
254582680,4sleep20-21swapper/221:38:562
254582680,4sleep20-21swapper/221:38:562
203992660,2chrt0-21swapper/219:58:542
203992660,2chrt0-21swapper/219:58:542
275742640,3sleep20-21swapper/200:38:452
302012620,3chrt0-21swapper/220:23:582
28692620,3sleep20-21swapper/220:38:542
28692620,3sleep20-21swapper/220:38:542
28692620,3sleep20-21swapper/220:38:542
219792590,3chrt0-21swapper/022:54:030
219792590,3chrt0-21swapper/022:54:030
121722540,2sleep20-21swapper/221:03:542
70032530,3sleep20-21swapper/223:43:472
70032530,3sleep20-21swapper/223:43:472
73542510,1sleep2351rcuc/219:23:562
271322500,4sleep20-21swapper/223:09:002
271322500,4sleep20-21swapper/223:09:002
315692480,3sleep20-21swapper/221:53:592
315692480,3sleep20-21swapper/221:53:592
143742480,4sleep20-21swapper/200:03:402
143742480,4sleep20-21swapper/200:03:402
143742480,4sleep20-21swapper/200:03:402
11272460,1sleep2351rcuc/220:33:552
185202450,1sleep10-21swapper/119:53:541
185202450,1sleep10-21swapper/119:53:541
179322430,3sleep30-21swapper/322:44:013
137212430,2sleep13405-21cyclictest19:39:031
137212430,2sleep13405-21cyclictest19:39:031
226402410,2sleep10-21swapper/100:23:571
226402410,2sleep10-21swapper/100:23:571
48292390,3sleep20-21swapper/220:43:562
48292390,3sleep20-21swapper/220:43:562
3408993831,5cyclictest735-21systemd-logind21:40:491
3408993831,5cyclictest735-21systemd-logind21:40:491
272042380,2sleep00-21swapper/023:09:030
272042380,2sleep00-21swapper/023:09:030
229662380,3sleep20-21swapper/200:24:022
229662380,3sleep20-21swapper/200:24:022
3406993722,2cyclictest181rcu_preempt23:07:360
3406993722,2cyclictest181rcu_preempt23:07:360
3406993722,2cyclictest181rcu_preempt23:07:360
3406993722,2cyclictest181rcu_preempt23:07:360
3408993631,4cyclictest729-21dbus-daemon00:04:031
3408993631,4cyclictest729-21dbus-daemon00:04:031
3406993528,5cyclictest729-21dbus-daemon23:03:400
3406993528,5cyclictest729-21dbus-daemon23:03:400
3406993528,5cyclictest729-21dbus-daemon23:03:400
3406993527,6cyclictest15271-21sshd21:10:560
3406993527,6cyclictest15271-21sshd21:10:560
3408993428,4cyclictest13648-21head22:33:531
3408993428,4cyclictest13648-21head22:33:531
3406993426,6cyclictest1045-21cut21:59:020
3406993426,6cyclictest1045-21cut21:59:020
3406993426,6cyclictest1045-21cut21:59:020
92552330,2chrt0-21swapper/120:54:041
92552330,2chrt0-21swapper/120:54:041
342599331,27cyclictest14492-21chrt00:03:453
342599331,27cyclictest14492-21chrt00:03:453
342599331,27cyclictest14492-21chrt00:03:453
3408993327,4cyclictest29333-21sh00:43:401
3408993327,4cyclictest29333-21sh00:43:401
3408993327,4cyclictest29333-21sh00:43:401
3408993326,5cyclictest8482-21sshd19:27:561
3408993326,4cyclictest0-21swapper/122:29:021
3408993326,4cyclictest0-21swapper/122:29:021
3408993326,4cyclictest0-21swapper/122:29:021
3408993325,6cyclictest19283-21runrttasks00:14:021
3408993325,6cyclictest19283-21runrttasks00:14:021
3408993324,6cyclictest0-21swapper/120:48:391
3408993324,6cyclictest0-21swapper/120:48:391
3408993226,4cyclictest572-21cups-browsed21:59:021
3408993226,4cyclictest572-21cups-browsed21:59:021
3408993226,4cyclictest572-21cups-browsed21:59:021
3408993225,5cyclictest26891-21sshd23:08:571
3408993225,5cyclictest26891-21sshd23:08:571
3406993226,4cyclictest6143-21cut22:13:540
3406993225,5cyclictest3405-21cyclictest22:53:410
3406993225,5cyclictest3405-21cyclictest22:53:410
137792320,3sleep00-21swapper/021:08:470
3408993126,3cyclictest3405-21cyclictest20:08:541
3408993126,3cyclictest3405-21cyclictest20:08:541
3408993125,4cyclictest2662-21missed_timers22:03:581
3408993125,4cyclictest2662-21missed_timers22:03:581
3406993127,3cyclictest3405-21cyclictest00:19:020
3406993127,3cyclictest3405-21cyclictest00:19:020
3406993127,3cyclictest3405-21cyclictest00:19:020
3406993124,5cyclictest5435-21sshd22:11:560
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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