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2025-11-25 - 16:59

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 Tue Nov 25, 2025 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
38468995547,5cyclictest69884-21kworker/u8:1+events_unbound08:54:573
38455995344,6cyclictest98042-21fschecks_count10:00:160
38455995037,6cyclictest110928-21kworker/u8:1+events_unbound10:50:210
38455994837,8cyclictest63083-21sh08:20:000
38468994740,4cyclictest84211-21fschecks_time09:20:173
38463994434,6cyclictest81662-21grep09:10:272
38455994436,5cyclictest69911-21munin-plugin-st08:40:000
38468994335,5cyclictest440-21cron12:30:003
38463994332,6cyclictest0-21swapper/211:20:002
38463994332,6cyclictest0-21swapper/211:20:002
38468994235,4cyclictest97431-21sendmail09:59:593
38468994222,6cyclictest78411-21kworker/u8:0+events_unbound09:14:083
38455994234,5cyclictest123004-21unixbench_singl11:10:250
38468994129,8cyclictest141967-21grep12:05:253
38463994131,5cyclictest0-21swapper/207:15:012
38455994131,6cyclictest0-21swapper/007:35:000
38468994032,5cyclictest88875-21cron09:35:003
38468994030,7cyclictest86730-21tail09:25:273
38468994029,8cyclictest47511-21sh07:35:003
38463994031,6cyclictest65174-21fschecks_count08:25:162
38463994031,6cyclictest65174-21fschecks_count08:25:162
38468993928,7cyclictest93601-21unixbench_singl09:45:273
38468993928,7cyclictest93601-21unixbench_singl09:45:273
38468993928,7cyclictest50466-21grep07:40:273
38468993927,8cyclictest112751-21grep10:40:283
38460993929,6cyclictest0-21swapper/107:15:021
38455993929,6cyclictest44115-21apt07:25:010
38455993929,6cyclictest0-21swapper/012:35:010
38468993827,7cyclictest0-21swapper/308:00:283
38463993828,5cyclictest0-21swapper/212:25:452
38460993829,5cyclictest440-21cron12:00:001
38460993828,6cyclictest0-21swapper/109:30:001
38455993827,7cyclictest64811-21cut08:25:000
38468993729,4cyclictest0-21swapper/309:05:163
38468993720,6cyclictest138716-21kworker/u8:1+events_unbound11:58:433
38463993727,6cyclictest0-21swapper/208:55:002
38455993730,4cyclictest90592-21munin-plugin-st09:40:000
38455993729,5cyclictest0-21swapper/009:45:010
38455993728,5cyclictest0-21swapper/011:59:590
38455993727,6cyclictest57507-21grep08:00:280
38468993618,6cyclictest61322-21kworker/u8:0+events_unbound08:38:363
38463993630,3cyclictest80241-21gpgv09:10:012
38463993627,5cyclictest0-21swapper/209:35:162
38463993626,6cyclictest0-21swapper/211:35:002
38463993626,6cyclictest0-21swapper/208:05:012
38463993625,7cyclictest0-21swapper/210:45:252
38460993626,5cyclictest0-21swapper/107:20:011
3846099360,3cyclictest131rcu_preempt08:35:141
38455993629,4cyclictest97418-21munin-plugin-st09:59:590
38455993627,5cyclictest0-21swapper/009:25:010
38455993627,5cyclictest0-21swapper/009:05:000
38455993626,6cyclictest0-21swapper/012:30:000
38455993625,7cyclictest93599-21grep09:45:270
38455993625,7cyclictest93599-21grep09:45:270
38468993529,4cyclictest76678-21kworker/u8:3+events_unbound09:04:573
38468993528,4cyclictest0-21swapper/311:45:423
38468993528,4cyclictest0-21swapper/311:45:423
38468993526,5cyclictest0-21swapper/312:20:013
38468993525,6cyclictest0-21swapper/310:05:003
38468993524,7cyclictest0-21swapper/312:35:003
38468993517,6cyclictest92067-21kworker/u8:0+events_unbound09:42:203
38463993528,4cyclictest88878-21cron09:35:012
38463993528,4cyclictest104236-21kworker/u8:2-events_unbound10:25:132
38463993525,6cyclictest0-21swapper/208:55:262
38463993524,7cyclictest44113-21sh07:25:012
38463993524,7cyclictest0-21swapper/211:55:272
38463993524,6cyclictest64331-21grep08:20:282
3846099353,8cyclictest36761-21kworker/1:0-mm_percpu_wq08:30:121
3846099353,8cyclictest36761-21kworker/1:0-mm_percpu_wq08:30:121
38460993528,5cyclictest119978-21kworker/u8:0+events_unbound11:15:261
38460993528,5cyclictest119978-21kworker/u8:0+events_unbound11:15:251
38455993527,5cyclictest299-21systemd-logind09:50:040
38455993527,5cyclictest0-21swapper/011:54:590
38455993527,4cyclictest0-21swapper/008:30:260
38455993527,4cyclictest0-21swapper/008:30:250
38468993426,4cyclictest0-21swapper/309:00:013
38468993425,5cyclictest0-21swapper/308:45:163
38463993426,4cyclictest0-21swapper/212:20:012
38463993425,5cyclictest0-21swapper/212:20:282
38463993424,6cyclictest0-21swapper/211:30:002
38463993424,6cyclictest0-21swapper/211:30:002
38460993427,3cyclictest0-21swapper/111:40:001
38460993427,3cyclictest0-21swapper/108:05:181
38460993426,4cyclictest0-21swapper/109:00:181
38460993419,12cyclictest231ktimers/107:50:111
38455993425,5cyclictest0-21swapper/012:25:000
38455993424,7cyclictest126224-21timerandwakeup11:20:260
38455993424,7cyclictest126224-21timerandwakeup11:20:260
38455993424,6cyclictest0-21swapper/012:40:010
38468993324,5cyclictest0-21swapper/311:19:593
38468993324,5cyclictest0-21swapper/311:19:593
38468993322,8cyclictest59663-21cron08:10:003
38463993325,4cyclictest0-21swapper/207:34:392
38463993324,5cyclictest109118-21unixbench_multi10:30:262
38460993324,5cyclictest0-21swapper/108:50:011
38460993323,7cyclictest76301-21grep08:55:251
38460993323,6cyclictest0-21swapper/111:10:001
38455993325,4cyclictest0-21swapper/009:15:170
38455993324,6cyclictest0-21swapper/011:39:590
38455993324,6cyclictest0-21swapper/009:00:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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