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2025-11-24 - 11:51

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 Mon Nov 24, 2025 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
221123995041,6cyclictest251065-21grep20:30:240
221128994834,9cyclictest325696-21idleruntime-cro00:10:001
221123994842,4cyclictest328957-21kworker/u8:2+events_unbound00:23:560
221128994741,4cyclictest325442-21kworker/u8:0+events_unbound00:13:421
221132994635,7cyclictest287478-21grep22:15:272
221137994413,10cyclictest301055-21mailstats22:55:253
221132994435,5cyclictest225075-21idleruntime-cro19:20:002
221137994317,9cyclictest278265-21if_eth121:50:173
221137994317,9cyclictest278265-21if_eth121:50:173
221123994337,4cyclictest229866-21kworker/u8:1+events_unbound20:06:370
221123994336,5cyclictest235235-21kworker/u8:0+events_unbound19:51:350
221123994333,6cyclictest230169-21cron19:35:000
22113799429,11cyclictest222026-21grep19:10:263
221137994213,12cyclictest296841-21/usr/sbin/munin22:45:143
221137994213,11cyclictest295923-21cat22:40:243
221132994233,6cyclictest230187-21munin-plugin-st19:35:012
221123994234,4cyclictest253427-21sendmail20:40:010
221123994230,9cyclictest121ktimers/000:05:160
221137994116,10cyclictest227738-21/usr/sbin/munin19:25:263
221137994111,11cyclictest241428-21/usr/sbin/munin20:05:183
221123994133,6cyclictest305106-21kworker/u8:0+events_unbound23:21:580
221137994015,7cyclictest327009-21users00:10:313
221137994011,9cyclictest288951-21/usr/sbin/munin22:20:253
221137994010,10cyclictest261470-21ntp_states21:00:233
221128994029,7cyclictest287524-21grep22:15:271
221123994034,4cyclictest282659-21kworker/u8:0+events_unbound22:11:500
221123994033,5cyclictest315348-21kworker/u8:1+events_unbound23:42:010
221123994021,11cyclictest131rcu_preempt22:05:010
221132993931,4cyclictest0-21swapper/220:50:022
221123993932,5cyclictest315348-21kworker/u8:1+events_unbound23:52:490
221123993921,9cyclictest131rcu_preempt21:20:100
221137993826,7cyclictest0-21swapper/300:20:253
221137993810,11cyclictest324294-21cat00:05:173
221132993827,7cyclictest0-21swapper/223:40:002
221123993829,7cyclictest256690-21kworker/u8:1+events_unbound21:06:430
221137993724,10cyclictest271478-21/usr/sbin/munin21:30:173
221137993720,3cyclictest334567-21diskstats00:35:163
221137993712,9cyclictest229427-21mailstats19:30:243
221128993731,4cyclictest256690-21kworker/u8:1+events_unbound21:01:431
221128993728,6cyclictest293517-21fschecks_time22:35:171
221123993731,4cyclictest309456-21kworker/u8:2+events_unbound23:31:570
221123993730,5cyclictest282659-21kworker/u8:0+events_unbound22:36:540
221123993722,9cyclictest131rcu_preempt21:10:180
221123993720,4cyclictest221118-21cyclictest20:55:330
221123993718,4cyclictest131rcu_preempt23:25:170
221123993718,4cyclictest131rcu_preempt20:02:180
221123993717,5cyclictest131rcu_preempt23:45:160
221123993717,5cyclictest131rcu_preempt23:45:160
221123993712,16cyclictest131rcu_preempt22:45:260
221137993625,7cyclictest286473-21munin-node22:15:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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