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2026-08-06 - 14:23

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 Thu Aug 06, 2026 12:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
350621200,2chrt0-21swapper/108:13:521
180521120,3sleep1281ktimers/110:59:311
180521120,3sleep1281ktimers/110:59:311
180521120,3sleep1281ktimers/110:59:311
786521110,3chrt0-21swapper/311:18:463
2872921110,3sleep30-21swapper/309:18:593
2872921110,3sleep30-21swapper/309:18:593
2872921110,3sleep30-21swapper/309:18:593
2990121020,3sleep30-21swapper/310:48:593
2990121020,3sleep30-21swapper/310:48:593
184952880,3sleep30-21swapper/311:44:033
184952880,3sleep30-21swapper/311:44:033
309822790,3sleep30-21swapper/307:58:593
309822790,3sleep30-21swapper/307:58:593
139442780,3sleep30-21swapper/311:33:543
98242740,3sleep20-21swapper/208:28:572
314382610,3sleep30-21swapper/312:19:003
314382610,3sleep30-21swapper/312:19:003
228552590,4sleep30-21swapper/311:58:423
228552590,4sleep30-21swapper/311:58:423
3732570,2sleep30-21swapper/308:03:573
289462550,3sleep30-21swapper/307:53:563
47772540,3chrt0-21swapper/309:43:513
47772540,3chrt0-21swapper/309:43:513
81842500,3sleep20-21swapper/208:24:022
81842500,3sleep20-21swapper/208:24:022
187352490,3sleep20-21swapper/211:44:062
187352490,3sleep20-21swapper/211:44:062
57642480,1sleep10-21swapper/108:18:551
57642480,1sleep10-21swapper/108:18:551
284202440,4sleep30-21swapper/312:13:423
305092420,2sleep20-21swapper/209:24:002
305092420,2sleep20-21swapper/209:24:002
211542410,2sleep113927-21cyclictest07:33:521
211542410,2sleep113927-21cyclictest07:33:521
279492390,3sleep20-21swapper/209:18:502
279492390,3sleep20-21swapper/209:18:502
321522370,2sleep132158-21latency_hist12:23:411
321522370,2sleep132158-21latency_hist12:23:411
300602370,4sleep10-21swapper/109:23:551
300602370,4sleep10-21swapper/109:23:551
260962370,3sleep30-21swapper/309:13:523
260962370,3sleep30-21swapper/309:13:523
191712370,3chrt0-21swapper/210:19:032
191712370,3chrt0-21swapper/210:19:032
159292360,2sleep015950-21latency_hist10:13:440
159292360,2sleep015950-21latency_hist10:13:440
275962350,3sleep20-21swapper/212:09:022
13930993524,2cyclictest181rcu_preempt10:11:501
13930993524,2cyclictest181rcu_preempt10:11:501
13929993527,6cyclictest9865-21netstat08:28:580
13929993523,10cyclictest0-21swapper/009:13:410
16092340,3sleep30-21swapper/312:28:413
16092340,3sleep30-21swapper/312:28:413
13930993417,4cyclictest90-1pr/ttyS008:52:121
13930993417,4cyclictest90-1pr/ttyS008:52:121
179792330,2sleep0201rcuc/007:23:590
13930993326,4cyclictest281ktimers/111:13:411
13930993326,4cyclictest281ktimers/111:13:411
13930993325,6cyclictest7978-21netstat08:23:591
13930993325,6cyclictest7978-21netstat08:23:591
13930993325,6cyclictest23853-21threads07:39:001
13930993325,6cyclictest23853-21threads07:39:001
13930993325,6cyclictest23853-21threads07:39:001
13929993325,6cyclictest28034-21netstat10:44:000
13930993226,4cyclictest31930-21sendmail_mailst10:54:011
13930993226,4cyclictest31930-21sendmail_mailst10:54:011
13929993225,5cyclictest2147-21idleruntime-cro11:03:420
13929993225,5cyclictest2147-21idleruntime-cro11:03:420
13929993225,5cyclictest2147-21idleruntime-cro11:03:420
13929993225,5cyclictest12007-21switchtime08:34:020
13930993126,3cyclictest0-21swapper/109:14:021
13930993126,3cyclictest0-21swapper/109:14:021
13930993123,6cyclictest25630-21netstat12:04:001
13930993123,6cyclictest25630-21netstat12:04:001
13930993121,8cyclictest281ktimers/110:02:391
13930993121,8cyclictest281ktimers/110:02:391
13930993110,19cyclictest281ktimers/109:49:091
13930993110,19cyclictest281ktimers/109:49:091
13929993127,3cyclictest32189-21sendmail12:23:410
13929993127,3cyclictest32189-21sendmail12:23:410
13929993125,4cyclictest22089-21gltestperf10:28:550
13929993122,7cyclictest16807-21netstat10:13:590
13929993122,7cyclictest16807-21netstat10:13:590
274112300,3sleep30-21swapper/310:43:533
274112300,3sleep30-21swapper/310:43:533
13930993025,4cyclictest1346-21avahi-daemon11:24:031
13930993025,4cyclictest1346-21avahi-daemon11:24:031
13929993025,4cyclictest13927-21cyclictest07:58:560
13929993025,4cyclictest13927-21cyclictest07:58:560
137822300,2sleep30-21swapper/308:39:043
137822300,2sleep30-21swapper/308:39:043
137822300,2sleep30-21swapper/308:39:043
283432290,1sleep028230-21latency_hist07:53:460
283432290,1sleep028230-21latency_hist07:53:460
278742290,2sleep0171ktimers/012:09:040
234212290,3sleep30-21swapper/310:33:443
13930992925,3cyclictest1618-21idleruntime-cro12:28:411
13930992925,3cyclictest1618-21idleruntime-cro12:28:411
13930992924,3cyclictest0-21swapper/109:03:411
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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