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2026-03-07 - 22:56

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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.

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 rack4slot1s.osadl.org (updated Fri Mar 06, 2026 12:44:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
932221340,3chrt0-21swapper/212:26:432
932221340,3chrt0-21swapper/212:26:432
58021340,3sleep20-21swapper/210:36:442
58021340,3sleep20-21swapper/210:36:442
58021340,3sleep20-21swapper/210:36:442
58021340,3sleep20-21swapper/210:36:442
442121310,3sleep20-21swapper/207:56:282
1076121270,2sleep20-21swapper/211:06:312
1076121270,2sleep20-21swapper/211:06:312
154112810,3chrt0-21swapper/011:16:420
154112810,3chrt0-21swapper/011:16:420
154112810,3chrt0-21swapper/011:16:420
138092690,3sleep20-21swapper/209:46:352
138092690,3sleep20-21swapper/209:46:352
194142670,3sleep019417-21tail11:26:430
194142670,3sleep019417-21tail11:26:430
226652630,2chrt22664-21df10:11:311
226652630,2chrt22664-21df10:11:311
274712590,3chrt0-21swapper/211:51:252
274712590,3chrt0-21swapper/211:51:252
255672570,5chrt25570-21unixbench-2d10:16:411
255672570,5chrt25570-21unixbench-2d10:16:411
255672570,5chrt25570-21unixbench-2d10:16:411
319722510,3chrt0-21swapper/310:36:333
319722510,3chrt0-21swapper/310:36:333
319722510,3chrt0-21swapper/310:36:333
319722510,3chrt0-21swapper/310:36:333
275792500,2sleep20-21swapper/207:31:322
275792500,2sleep20-21swapper/207:31:322
61622440,2sleep30-21swapper/309:26:343
20012430,3chrt0-21swapper/210:41:352
20012430,3chrt0-21swapper/210:41:352
319922410,3sleep20-21swapper/212:01:392
319922410,3sleep20-21swapper/212:01:392
157362400,3sleep20-21swapper/211:16:442
157362400,3sleep20-21swapper/211:16:442
157362400,3sleep20-21swapper/211:16:442
55622390,4chrt0-21swapper/307:56:423
55622390,4chrt0-21swapper/307:56:423
216432350,2sleep20-21swapper/211:35:062
216432350,2sleep20-21swapper/211:35:062
20120993527,6cyclictest1172-21sendmail10:41:200
20120993527,6cyclictest1172-21sendmail10:41:200
20120993527,6cyclictest1172-21sendmail10:41:200
20120993527,6cyclictest1172-21sendmail10:41:200
20120993429,4cyclictest572-21cups-browsed11:01:420
20120993429,4cyclictest572-21cups-browsed11:01:420
20120993428,5cyclictest32262-21cron09:11:200
20120993427,5cyclictest0-21swapper/008:21:200
20120993427,5cyclictest0-21swapper/008:21:200
20121993327,4cyclictest13559-21cut09:46:331
20121993327,4cyclictest13559-21cut09:46:331
20121993324,7cyclictest32272-21idleruntime-cro09:11:201
20120993320,11cyclictest0-21swapper/010:26:340
2012399321,11cyclictest3768-21chrt10:46:343
20120993227,3cyclictest26199-21runrttasks07:26:350
20120993227,3cyclictest13382-21fschecks_count09:46:320
20120993227,3cyclictest13382-21fschecks_count09:46:320
20120993226,5cyclictest409-21idleruntime-cro07:46:200
20120993226,5cyclictest409-21idleruntime-cro07:46:200
33932310,1sleep03500-21fschecks_time10:46:320
20121993125,4cyclictest20117-21cyclictest12:36:311
20121993125,4cyclictest20117-21cyclictest12:36:311
172272310,3sleep20-21swapper/209:56:332
172272310,3sleep20-21swapper/209:56:332
296632300,2sleep129667-21tail07:36:341
296632300,2sleep129667-21tail07:36:341
296632300,2sleep129667-21tail07:36:341
20121993025,4cyclictest15466-21idleruntime09:51:331
20121993025,4cyclictest15466-21idleruntime09:51:331
20121993024,5cyclictest14497-21cpu11:16:321
20121993024,5cyclictest14497-21cpu11:16:321
20121993024,5cyclictest14497-21cpu11:16:321
20120993026,3cyclictest20117-21cyclictest08:36:360
20120993026,3cyclictest20117-21cyclictest08:36:360
20120993026,3cyclictest20117-21cyclictest08:36:360
20120993024,5cyclictest18026-21kernelversion08:31:360
20120993024,5cyclictest18026-21kernelversion08:31:360
20120993024,4cyclictest1346-21avahi-daemon07:31:420
20120993024,4cyclictest1346-21avahi-daemon07:31:420
20120993023,5cyclictest6610-21cut08:01:340
20120993023,5cyclictest6610-21cut08:01:340
20120993014,14cyclictest4740-21gunzip09:21:400
37852290,2sleep00-21swapper/012:11:410
37852290,2sleep00-21swapper/012:11:410
20121992921,6cyclictest19904-21latency_hist11:31:201
20121992921,6cyclictest19904-21latency_hist11:31:201
20120992924,3cyclictest20117-21cyclictest10:46:200
20120992924,3cyclictest20117-21cyclictest10:46:200
20120992923,5cyclictest9252-21latency_hist09:36:210
20120992923,5cyclictest9252-21latency_hist09:36:210
20120992922,5cyclictest31047-21sshd12:01:000
20120992922,5cyclictest31047-21sshd12:01:000
20120992922,5cyclictest10994-21fschecks_time11:06:330
20120992922,5cyclictest10994-21fschecks_time11:06:330
20121992823,2cyclictest0-21swapper/110:06:201
20121992823,2cyclictest0-21swapper/110:06:201
20120992821,5cyclictest28176-21sshd08:57:000
20120992821,5cyclictest28176-21sshd08:57:000
20120992821,5cyclictest28176-21sshd08:57:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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