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2026-04-17 - 20:43

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 Fri Apr 17, 2026 12:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1534552995043,4cyclictest1600527-21apt-get10:20:000
1534565994739,5cyclictest1557685-21idleruntime-cro08:15:003
1534565994630,9cyclictest131rcu_preempt11:45:173
1534556994639,5cyclictest231ktimers/112:00:111
1534556994637,6cyclictest1605392-21grep10:30:261
1534552994635,8cyclictest121ktimers/009:00:120
1534565994531,10cyclictest391ktimers/307:25:143
1534565994531,10cyclictest391ktimers/307:25:143
1534565994337,4cyclictest1600226-21kworker/u8:1+events_unbound10:54:063
1534565994337,4cyclictest1579763-21kworker/u8:0+events_unbound09:38:553
1534556994337,4cyclictest1649137-21munin-plugin-st12:40:001
1534556994132,6cyclictest1620109-21fschecks_count11:15:141
1534556994130,7cyclictest1603750-21unixbench_singl10:25:251
1534552994132,6cyclictest1543386-21grep07:30:250
1534552994132,6cyclictest1543386-21grep07:30:250
1534556994033,4cyclictest1618025-21idleruntime-cro11:10:001
1534556994032,5cyclictest1564710-21apt-key08:35:011
1534552994031,6cyclictest1605394-21unixbench_multi10:30:260
153455299402,5cyclictest131rcu_preempt10:20:110
1534556993932,4cyclictest1614608-21idleruntime-cro11:00:011
153455299396,4cyclictest131rcu_preempt07:45:110
153455299396,4cyclictest131rcu_preempt07:45:100
1534552993929,7cyclictest121ktimers/008:10:120
153455299391,5cyclictest131rcu_preempt10:40:130
1534565993823,5cyclictest131rcu_preempt12:20:233
1534556993831,4cyclictest0-21swapper/108:45:011
153455299385,6cyclictest131rcu_preempt10:00:100
1534552993831,3cyclictest0-21swapper/012:40:000
1534565993729,4cyclictest0-21swapper/308:00:013
1534565993726,6cyclictest0-21swapper/308:30:253
1534561993727,8cyclictest1630169-21sh11:45:012
153455699373,5cyclictest131rcu_preempt10:45:101
1534556993730,4cyclictest1639920-21unixbench_multi12:10:251
1534556993728,6cyclictest0-21swapper/108:15:011
153455699372,6cyclictest131rcu_preempt12:30:131
1534552993727,6cyclictest0-21swapper/009:55:270
153455299372,4cyclictest131rcu_preempt12:15:100
1534565993629,4cyclictest0-21swapper/307:20:003
1534561993628,5cyclictest1545992-21fschecks_time07:40:172
1534561993628,3cyclictest0-21swapper/207:20:012
1534561993626,6cyclictest0-21swapper/211:20:012
1534556993626,7cyclictest1580079-21sendmail09:20:001
1534552993629,5cyclictest1624465-21kworker/u8:1+events_unbound11:45:400
1534552993624,8cyclictest121ktimers/011:15:110
1534565993527,4cyclictest0-21swapper/311:30:003
1534565993524,8cyclictest391ktimers/309:50:123
1534565993524,5cyclictest131rcu_preempt08:17:463
1534565993521,10cyclictest391ktimers/311:10:123
1534565993511,12cyclictest40-21ksoftirqd/308:40:253
1534561993527,4cyclictest0-21swapper/211:00:242
1534556993527,4cyclictest0-21swapper/107:15:161
1534556993526,6cyclictest0-21swapper/107:25:021
1534556993526,4cyclictest0-21swapper/111:39:141
1534552993528,4cyclictest1639918-21grep12:10:240
1534552993528,3cyclictest0-21swapper/007:40:000
1534552993526,4cyclictest0-21swapper/010:49:040
153456599347,6cyclictest40-21ksoftirqd/309:15:213
1534565993423,7cyclictest391ktimers/309:30:193
1534565993419,4cyclictest131rcu_preempt09:44:373
1534565993417,10cyclictest131rcu_preempt07:20:243
1534565993416,9cyclictest131rcu_preempt09:10:563
1534565993416,5cyclictest131rcu_preempt09:55:213
1534565993416,4cyclictest131rcu_preempt11:18:383
1534565993415,5cyclictest131rcu_preempt09:30:003
1534565993414,12cyclictest131rcu_preempt10:50:003
1534565993410,6cyclictest40-21ksoftirqd/307:10:263
1534556993426,4cyclictest0-21swapper/108:55:001
1534565993325,4cyclictest0-21swapper/311:05:153
1534565993318,4cyclictest131rcu_preempt08:53:003
1534565993316,5cyclictest131rcu_preempt11:55:173
1534565993314,4cyclictest131rcu_preempt10:24:553
1534556993325,4cyclictest0-21swapper/110:00:011
1534552993327,3cyclictest1566431-21sendmail08:40:000
1534552993327,3cyclictest0-21swapper/011:00:000
1534552993326,4cyclictest0-21swapper/011:05:250
1534552993325,4cyclictest0-21swapper/009:00:000
1534565993224,5cyclictest1595842-21fschecks_time10:05:163
1534565993221,7cyclictest391ktimers/307:40:253
1534565993218,4cyclictest131rcu_preempt12:36:243
1534565993216,4cyclictest131rcu_preempt10:31:303
1534565993215,4cyclictest131rcu_preempt08:29:113
1534565993214,9cyclictest131rcu_preempt12:08:583
1534565993214,10cyclictest131rcu_preempt10:25:143
1534565993210,11cyclictest40-21ksoftirqd/308:05:233
153456199327,4cyclictest15810062find09:20:242
153456199327,4cyclictest15810062find09:20:242
1534561993225,4cyclictest0-21swapper/209:10:002
1534556993223,5cyclictest0-21swapper/107:35:151
1534552993226,4cyclictest1514563-21kworker/u8:2+events_unbound08:18:380
1534552993221,7cyclictest1638275-21grep12:05:240
153456599318,14cyclictest40-21ksoftirqd/308:45:203
1534565993124,5cyclictest1547108-21kworker/u8:0+events_unbound07:48:423
1534565993124,5cyclictest1547108-21kworker/u8:0+events_unbound07:48:423
1534565993123,6cyclictest1610825-21kworker/u8:3+events_unbound10:59:373
1534565993123,4cyclictest0-21swapper/309:05:003
1534565993122,7cyclictest391ktimers/308:00:123
1534565993121,7cyclictest391ktimers/311:32:023
1534565993121,7cyclictest391ktimers/309:45:163
1534565993121,6cyclictest0-21swapper/311:40:243
1534565993119,4cyclictest131rcu_preempt12:14:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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