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2025-12-04 - 17:23

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 50 highest latencies:
System rackbslot5s.osadl.org (updated Thu Dec 04, 2025 12:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3182780995444,5cyclictest3287529-21kworker/u8:0+events_unbound12:30:143
3182773995144,5cyclictest3273414-21kworker/u8:0+events_unbound11:36:231
3182773995041,5cyclictest3279025-21awk11:45:001
3182776994840,5cyclictest3184401-21munin-plugin-st07:15:012
3182768994741,4cyclictest3282363-21kworker/u8:0+events_unbound11:56:240
3182776994536,6cyclictest3279601-21fschecks_count11:45:162
3182776994536,5cyclictest3185375-21fschecks_count07:15:172
3182768994436,5cyclictest3182760-21cyclictest09:56:100
3182768994423,6cyclictest131rcu_preempt10:15:140
3182768994423,6cyclictest131rcu_preempt10:15:140
3182780994336,4cyclictest3270280-21sendmail11:20:013
3182776994336,4cyclictest3235734-21munin-plugin-st09:40:012
3182776994336,4cyclictest3214200-21apt-get08:40:002
3182776994333,7cyclictest3292874-21cron12:25:002
3182773994231,9cyclictest231ktimers/107:50:121
3182773994135,4cyclictest3240884-21kworker/u8:2+events_unbound09:56:111
3182773994127,11cyclictest231ktimers/108:50:141
3182773994031,5cyclictest0-21swapper/110:35:011
3182768994031,6cyclictest3189706-21unixbench_singl07:25:260
3182768994021,14cyclictest13650irq/42-30be0000.ethernet11:10:130
3182776993929,6cyclictest0-21swapper/208:20:012
3182773993929,7cyclictest3189704-21grep07:25:261
3182773993928,8cyclictest3239201-21apt-key09:50:021
3182780993831,5cyclictest3223231-21kworker/u8:0+events_unbound09:31:083
3182780993831,5cyclictest3223231-21kworker/u8:0+events_unbound09:31:083
3182773993831,4cyclictest3207175-21munin-plugin-st08:20:001
3182773993829,6cyclictest0-21swapper/111:00:011
3182776993727,6cyclictest0-21swapper/210:40:002
3182773993730,4cyclictest3228488-21cron09:20:001
3182773993729,4cyclictest0-21swapper/109:50:251
3182773993728,5cyclictest0-21swapper/107:55:251
3182773993726,7cyclictest3200806-21grep08:00:161
3182773993720,5cyclictest3287529-21kworker/u8:0+events_unbound12:19:531
3182773993719,12cyclictest3285777-21kworker/u8:1+events_unbound12:05:591
3182768993727,6cyclictest0-21swapper/009:15:000
3182768993716,5cyclictest131rcu_preempt12:35:130
3182780993626,6cyclictest0-21swapper/311:40:003
3182776993629,4cyclictest0-21swapper/211:34:592
3182776993627,6cyclictest3238752-21unixbench_singl09:45:272
3182776993627,5cyclictest3225502-21fschecks_time09:10:182
3182776993625,7cyclictest0-21swapper/209:15:272
3182773993623,9cyclictest231ktimers/109:05:131
3182780993527,4cyclictest0-21swapper/307:10:243
3182780993523,7cyclictest0-21swapper/308:35:003
3182776993525,6cyclictest0-21swapper/207:40:272
3182776993525,6cyclictest0-21swapper/207:40:272
3182776993524,5cyclictest3212220-21kworker/u8:3+events_unbound08:54:322
3182768993513,13cyclictest3193335-21kworker/u8:1-events_freezable_power_08:09:300
318278099348,3cyclictest131rcu_preempt12:20:113
3182780993424,6cyclictest0-21swapper/311:20:283
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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