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2026-05-06 - 11:19

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 May 06, 2026 00:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
443155995445,5cyclictest543874-21munin-run00:00:002
443160994733,10cyclictest391ktimers/322:40:123
443150994733,9cyclictest450512-21grep19:25:261
443160994539,4cyclictest507459-21kworker/u8:0+events_unbound23:06:483
443150994534,8cyclictest509341-21idleruntime-cro22:19:591
443145994517,5cyclictest0-21swapper/023:00:260
443150994435,4cyclictest0-21swapper/121:40:011
443145994431,10cyclictest121ktimers/022:10:140
443160994235,5cyclictest495253-21kworker/u8:1+events_unbound21:51:363
443155994231,8cyclictest311ktimers/200:05:132
443160994034,4cyclictest548714-21kworker/u8:3+events_unbound00:12:053
443160994034,4cyclictest528217-21kworker/u8:1+events_unbound23:21:503
443160994032,5cyclictest391ktimers/319:20:113
443160993931,6cyclictest536916-21kworker/u8:1+events_unbound23:41:513
443150993930,6cyclictest231ktimers/120:35:111
443160993830,5cyclictest530225-21munin-run23:20:003
443160993827,7cyclictest0-21swapper/319:20:003
443160993825,9cyclictest443272-21apt-key19:10:013
443160993825,9cyclictest443272-21apt-key19:10:003
443145993828,6cyclictest0-21swapper/019:30:020
44316099377,16cyclictest40-21ksoftirqd/320:10:173
443145993726,7cyclictest0-21swapper/022:25:000
443160993625,5cyclictest131rcu_preempt20:25:223
443160993622,6cyclictest474735-21kworker/u8:2+events_unbound20:52:403
443160993616,16cyclictest391ktimers/300:16:303
443160993615,13cyclictest131rcu_preempt22:15:183
443155993629,4cyclictest481627-21idleruntime-cro21:00:002
443150993629,5cyclictest231ktimers/100:30:111
443145993626,7cyclictest0-21swapper/020:00:000
443160993520,6cyclictest131rcu_preempt23:59:593
443155993527,4cyclictest0-21swapper/223:00:002
443155993525,7cyclictest449606-21fschecks_count19:25:152
443155993523,8cyclictest467961-21sh20:20:012
443150993527,4cyclictest0-21swapper/121:00:251
44316099346,16cyclictest40-21ksoftirqd/321:15:253
443160993426,4cyclictest0-21swapper/322:25:263
443160993420,5cyclictest131rcu_preempt21:25:013
443160993418,4cyclictest131rcu_preempt19:55:163
443160993417,5cyclictest131rcu_preempt19:30:013
443160993416,9cyclictest131rcu_preempt21:30:183
443160993412,7cyclictest131rcu_preempt21:15:003
443160993411,5cyclictest381rcuc/323:25:573
443155993423,6cyclictest0-21swapper/222:05:242
443155993423,6cyclictest0-21swapper/222:05:242
44315099343,4cyclictest4863182sed21:10:251
443145993427,4cyclictest447302-21sendmail19:20:000
443160993327,4cyclictest520215-21kworker/u8:3+events_unbound22:54:413
443160993327,3cyclictest391ktimers/321:50:013
443160993325,4cyclictest0-21swapper/319:45:263
443160993324,4cyclictest0-21swapper/300:20:273
443160993323,4cyclictest131rcu_preempt21:39:433
443160993322,8cyclictest391ktimers/322:00:133
443160993321,8cyclictest391ktimers/319:40:013
443160993321,5cyclictest131rcu_preempt00:00:233
443160993316,10cyclictest131rcu_preempt20:55:183
443160993312,9cyclictest131rcu_preempt21:05:263
443160993312,6cyclictest0-21swapper/322:35:253
443160993312,5cyclictest131rcu_preempt20:38:203
443155993325,4cyclictest0-21swapper/222:00:272
443155993325,4cyclictest0-21swapper/221:30:252
443155993322,8cyclictest552411-21auditctl00:25:012
443150993326,3cyclictest0-21swapper/119:15:011
443150993324,5cyclictest545577-21cron00:05:001
443145993326,4cyclictest0-21swapper/019:45:250
443145993325,4cyclictest492077-21kthreadd21:30:010
443145993325,4cyclictest0-21swapper/000:30:000
443145993323,7cyclictest500852-21dpkg21:55:010
443145993323,7cyclictest121ktimers/023:55:120
443145993322,7cyclictest0-21swapper/022:19:590
44316099329,12cyclictest40-21ksoftirqd/322:10:013
44316099329,12cyclictest40-21ksoftirqd/322:10:003
443160993214,3cyclictest131rcu_preempt20:45:003
443160993213,3cyclictest131rcu_preempt22:00:013
443160993212,5cyclictest131rcu_preempt00:05:073
443160993211,5cyclictest131rcu_preempt20:05:253
443155993225,4cyclictest0-21swapper/200:25:262
443150993225,3cyclictest0-21swapper/122:45:261
443150993224,4cyclictest0-21swapper/121:45:251
443150993224,4cyclictest0-21swapper/119:55:271
443150993224,4cyclictest0-21swapper/100:20:001
443150993222,5cyclictest0-21swapper/123:01:451
443145993220,8cyclictest204-21dbus-daemon19:51:280
443145993217,11cyclictest121ktimers/020:50:120
44316099318,15cyclictest131rcu_preempt22:20:163
44316099316,6cyclictest40-21ksoftirqd/300:25:243
443160993124,3cyclictest0-21swapper/323:35:253
443160993114,9cyclictest131rcu_preempt22:45:163
443160993114,10cyclictest131rcu_preempt19:10:163
443160993113,4cyclictest131rcu_preempt20:15:243
443160993112,11cyclictest131rcu_preempt23:10:143
443155993124,4cyclictest0-21swapper/200:15:262
443155993123,5cyclictest444624-21kworker/u8:1+events_unbound19:16:272
443155993123,5cyclictest1-21systemd23:51:532
443155993123,4cyclictest0-21swapper/223:05:282
443155993120,7cyclictest0-21swapper/220:25:012
443150993120,7cyclictest0-21swapper/121:35:001
443145993123,4cyclictest482860-21grep21:00:250
443145993123,4cyclictest0-21swapper/020:10:010
443145993122,7cyclictest121ktimers/000:35:120
44316099309,11cyclictest40-21ksoftirqd/319:50:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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