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2026-06-09 - 01:50

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #8

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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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.
Unexpectedly long latencies may be caused by SMIs
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 rack0slot8s.osadl.org (updated Tue Jun 09, 2026 00:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
283491830,75ptp4l0-21swapper/119:07:301
94080730,67rtkit-daemon0-21swapper/519:07:047
357826956,11sleep110-21swapper/1119:08:173
365726857,9sleep100-21swapper/1019:09:292
358726756,9sleep70-21swapper/719:08:259
350426654,10sleep60-21swapper/619:07:128
250326653,10sleep40-21swapper/419:05:226
163826653,10sleep00-21swapper/019:05:190
292502550,0sleep70-21swapper/720:20:219
292502550,0sleep70-21swapper/720:20:219
78822490,1sleep8131rcu_preempt22:40:2310
239292480,0sleep60-21swapper/623:45:168
57062450,0sleep90-21swapper/922:40:1311
315802440,0sleep50-21swapper/523:55:167
417599340,1cyclictest0-21swapper/1021:41:252
417599300,1cyclictest0-21swapper/1022:25:142
415199190,1cyclictest0-21swapper/522:25:157
413899193,12cyclictest0-21swapper/323:47:155
418499173,8cyclictest0-21swapper/1120:15:003
418499173,8cyclictest0-21swapper/1120:15:003
417199173,9cyclictest0-21swapper/919:20:0011
413899170,4cyclictest84271cstates19:55:135
413899170,4cyclictest84271cstates19:55:135
283491170,8ptp4l15777-21expr23:35:121
417599160,1cyclictest0-21swapper/1023:00:152
417199163,8cyclictest0-21swapper/923:50:0011
417199163,7cyclictest0-21swapper/921:35:0011
417199162,7cyclictest0-21swapper/900:00:0111
415899163,11cyclictest0-21swapper/623:55:008
415899162,8cyclictest0-21swapper/619:45:018
415899161,3cyclictest0-21swapper/622:25:168
415199163,8cyclictest0-21swapper/500:35:017
413899162,10cyclictest0-21swapper/321:40:005
34772167,7sleep80-21swapper/819:06:5010
283491160,1ptp4l21-21ksoftirqd/119:15:121
283491160,0ptp4l0-21swapper/123:50:121
283491160,0ptp4l0-21swapper/123:10:241
97402150,0sleep80-21swapper/819:55:1910
97402150,0sleep80-21swapper/819:55:1810
418499152,7cyclictest0-21swapper/1119:40:253
417199150,14cyclictest0-21swapper/920:20:1511
417199150,14cyclictest0-21swapper/920:20:1511
415899153,7cyclictest0-21swapper/600:00:008
415899151,8cyclictest0-21swapper/621:05:008
413899153,8cyclictest0-21swapper/300:05:005
413899152,7cyclictest0-21swapper/321:20:015
34782157,6sleep90-21swapper/919:06:5211
283491150,2ptp4l24383-21aten2_r3power_v23:05:141
283491150,1ptp4l21-21ksoftirqd/120:55:221
283491150,1ptp4l21-21ksoftirqd/120:05:191
283491150,1ptp4l21-21ksoftirqd/120:05:191
283491150,1ptp4l21-21ksoftirqd/100:05:191
283491150,0ptp4l0-21swapper/123:15:151
283491150,0ptp4l0-21swapper/123:00:131
283491150,0ptp4l0-21swapper/122:35:131
283491150,0ptp4l0-21swapper/122:15:101
283491150,0ptp4l0-21swapper/122:05:191
283491150,0ptp4l0-21swapper/119:20:191
283491150,0ptp4l0-21swapper/100:15:191
418499143,10cyclictest0-21swapper/1122:15:013
418499140,7cyclictest0-21swapper/1119:30:243
417599141,2cyclictest0-21swapper/1023:35:162
417599141,2cyclictest0-21swapper/1022:45:162
417599141,2cyclictest0-21swapper/1000:30:162
417199142,7cyclictest21316-21kworker/u24:119:40:0111
417199142,7cyclictest0-21swapper/922:15:0111
417199142,7cyclictest0-21swapper/922:00:0011
417199142,7cyclictest0-21swapper/920:55:0011
417199142,7cyclictest0-21swapper/919:25:0011
415899143,7cyclictest0-21swapper/621:30:008
415899143,10cyclictest0-21swapper/600:20:008
415899142,8cyclictest0-21swapper/619:10:248
415899142,8cyclictest0-21swapper/600:20:228
415899142,8cyclictest0-21swapper/600:05:008
415899141,9cyclictest6081-21kworker/u24:022:05:028
415199142,8cyclictest0-21swapper/519:55:007
415199142,8cyclictest0-21swapper/519:55:007
413899143,7cyclictest0-21swapper/322:30:025
413899142,7cyclictest0-21swapper/319:10:005
412099142,7cyclictest0-21swapper/021:20:000
320212140,0sleep70-21swapper/721:05:259
283491140,2ptp4l8954-21open_files22:00:191
283491140,1ptp4l23980-21/usr/sbin/munin23:45:161
283491140,0ptp4l0-21swapper/121:55:111
283491140,0ptp4l0-21swapper/119:45:131
81962130,0sleep50-21swapper/523:25:127
53852130,0sleep00-21swapper/000:05:010
417199132,7cyclictest0-21swapper/920:20:0111
417199132,7cyclictest0-21swapper/920:20:0011
416799131,8cyclictest0-21swapper/823:20:0010
415899133,6cyclictest0-21swapper/623:35:228
415899132,7cyclictest0-21swapper/620:40:008
415899132,7cyclictest0-21swapper/600:15:008
415899131,7cyclictest0-21swapper/620:20:008
415899131,7cyclictest0-21swapper/620:20:008
413899131,8cyclictest0-21swapper/322:30:015
413899130,4cyclictest6809-21rt-features19:10:215
413899130,4cyclictest3775-21fschecks_count21:55:135
413199133,9cyclictest0-21swapper/223:05:024
413199133,9cyclictest0-21swapper/219:45:254
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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