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2026-06-10 - 04:47

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #5

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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  Phytec
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 rackbslot5s.osadl.org (updated Wed Jun 10, 2026 00:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1379449995730,23cyclictest1417922-21sendmail21:00:002
1379440995748,6cyclictest1443037-21grep22:10:260
1379440995748,6cyclictest1443037-21grep22:10:260
1379444995347,4cyclictest1469158-21kworker/u8:1+events_unbound23:27:201
1379449995220,6cyclictest0-21swapper/200:15:312
1379449994739,4cyclictest1421338-21idleruntime-cro21:10:012
1379452994431,10cyclictest391ktimers/322:55:133
1379452994331,8cyclictest1474764-21apt-config23:45:003
1379444994131,6cyclictest1491482-21grep00:30:251
1379440994133,4cyclictest1472924-21sh23:40:000
1379440994032,4cyclictest1450556-21munin-plugin-st22:35:000
1379440994031,6cyclictest0-21swapper/021:20:010
1379449993933,4cyclictest645-21runrttasks22:35:112
137944499399,3cyclictest131rcu_preempt19:30:121
137944099393,4cyclictest131rcu_preempt20:05:110
1379452993829,5cyclictest1407484-21munin-run20:30:003
1379449993827,8cyclictest311ktimers/221:20:132
137944099385,5cyclictest131rcu_preempt00:05:160
137944499374,4cyclictest131rcu_preempt22:00:121
1379444993730,4cyclictest0-21swapper/119:15:161
1379440993729,5cyclictest1448853-21basename22:30:000
1379440993727,7cyclictest1445233-21sendmail22:20:000
1379440993727,7cyclictest1445233-21sendmail22:20:000
1379452993630,3cyclictest0-21swapper/323:15:003
1379452993627,4cyclictest0-21swapper/320:32:083
1379449993628,5cyclictest1448836-21cron22:30:002
1379449993625,7cyclictest0-21swapper/220:45:162
1379449993625,7cyclictest0-21swapper/220:45:162
1379449993623,8cyclictest0-21swapper/223:15:002
1379444993627,6cyclictest0-21swapper/121:25:011
137944099361,7cyclictest131rcu_preempt22:00:110
1379449993528,4cyclictest0-21swapper/223:30:002
1379449993524,8cyclictest311ktimers/223:05:132
1379444993527,5cyclictest0-21swapper/100:05:001
1379444993526,6cyclictest0-21swapper/119:15:011
137944499352,3cyclictest131rcu_preempt22:10:121
137944499352,3cyclictest131rcu_preempt22:10:121
1379440993528,3cyclictest1431582-21sendmail21:40:000
1379440993523,6cyclictest0-21swapper/023:20:000
1379440993523,6cyclictest0-21swapper/023:20:000
1379440993522,9cyclictest204-21dbus-daemon21:52:140
137944099351,5cyclictest131rcu_preempt00:00:120
1379452993426,4cyclictest0-21swapper/320:47:103
1379452993426,4cyclictest0-21swapper/320:47:103
1379452993424,6cyclictest1393166-21grep19:45:253
1379444993427,4cyclictest1472931-21munin-run23:40:001
1379444993427,4cyclictest1397232-21latency_hist20:00:011
1379444993425,4cyclictest0-21swapper/121:35:161
1379440993425,6cyclictest1404052-21sh20:20:000
137944099341,29cyclictest0-21swapper/023:25:120
1379452993325,4cyclictest0-21swapper/322:15:153
1379452993325,4cyclictest0-21swapper/322:15:153
1379449993325,4cyclictest0-21swapper/222:50:242
1379449993325,4cyclictest0-21swapper/200:35:212
1379449993323,6cyclictest0-21swapper/220:15:232
1379444993326,4cyclictest0-21swapper/120:45:251
1379444993326,4cyclictest0-21swapper/120:45:251
1379444993324,7cyclictest1414143-21kworker/u8:0+events_unbound21:05:151
1379444993323,7cyclictest0-21swapper/120:10:261
137944099335,5cyclictest131rcu_preempt21:25:120
1379440993325,6cyclictest1460743-21kworker/u8:2+events_unbound23:07:190
1379440993323,6cyclictest0-21swapper/022:55:000
1379440993322,8cyclictest1397657-21tune2fs20:00:170
137945299328,4cyclictest14567942grep22:50:223
1379452993226,3cyclictest1412374-21unixbench_singl20:40:263
1379452993218,12cyclictest1379433-21cyclictest22:20:123
137944499324,4cyclictest131rcu_preempt00:05:161
1379444993225,4cyclictest1395539-21munin-plugin-st19:55:011
1379444993224,4cyclictest0-21swapper/120:20:261
1379444993223,5cyclictest1408980-21grep20:30:271
1379444993221,7cyclictest1486341-21grep00:15:301
1379440993225,4cyclictest13550irq/42-30be0000.ethernet22:40:250
1379440993224,4cyclictest0-21swapper/023:55:010
1379440993223,6cyclictest1455932-21taskset22:50:010
137944099321,4cyclictest131rcu_preempt20:20:120
1379452993121,7cyclictest1479489-21grep23:55:273
1379452993121,7cyclictest0-21swapper/319:45:013
1379452993121,5cyclictest1450935-21grep22:35:153
1379449993124,4cyclictest0-21swapper/222:40:252
1379449993124,4cyclictest0-21swapper/221:50:252
1379449993123,4cyclictest0-21swapper/219:31:592
1379449993121,6cyclictest0-21swapper/221:15:282
137944499318,4cyclictest131rcu_preempt22:30:001
1379444993122,5cyclictest1474659-21munin-plugin-st23:45:001
1379444993122,5cyclictest0-21swapper/121:40:261
1379444993119,8cyclictest1484653-21grep00:10:251
1379440993121,6cyclictest0-21swapper/021:00:250
1379440993121,6cyclictest0-21swapper/019:50:270
1379440993120,7cyclictest0-21swapper/000:15:300
137944099311,27cyclictest1393617-21apt19:50:000
1379452993022,4cyclictest0-21swapper/321:20:153
1379452993022,4cyclictest0-21swapper/320:50:263
1379452993019,9cyclictest391ktimers/323:15:143
1379452993019,9cyclictest391ktimers/323:15:143
1379452993018,9cyclictest1379433-21cyclictest22:45:133
1379449993024,3cyclictest0-21swapper/200:25:262
1379449993023,4cyclictest0-21swapper/219:45:162
1379449993020,7cyclictest1438393-21cut22:00:002
1379444993023,4cyclictest1393618-21sh19:50:001
1379444993023,4cyclictest0-21swapper/121:55:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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