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2025-07-01 - 04:18

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 Tue Jul 01, 2025 00:44:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
302221100,2sleep13024-21needreboot20:36:411
302221100,2sleep13024-21needreboot20:36:411
1634921050,2sleep30-21swapper/322:36:463
1634921050,2sleep30-21swapper/322:36:463
321822870,7sleep032184-21grep20:26:470
140132850,2sleep014017-21gltestperf21:06:380
140132850,2sleep014017-21gltestperf21:06:380
214872820,2sleep121486-21cat00:21:201
214872820,2sleep121486-21cat00:21:201
277142710,1sleep00-21swapper/021:41:440
277142710,1sleep00-21swapper/021:41:440
2603996039,13cyclictest55150irq/47-eth020:51:320
2603996039,13cyclictest55150irq/47-eth020:51:320
240332600,3chrt0-21swapper/020:06:370
240332600,3chrt0-21swapper/020:06:370
228842570,2chrt22885-21cp22:56:221
228842570,2chrt22885-21cp22:56:221
147952560,3sleep30-21swapper/319:41:483
2604995532,17cyclictest281ktimers/121:56:351
2604995532,17cyclictest281ktimers/121:56:351
260399552,39cyclictest394-21snmpd23:11:330
260399552,39cyclictest394-21snmpd23:11:330
260499543,7cyclictest181rcu_preempt22:36:361
260499543,7cyclictest181rcu_preempt22:36:361
260499522,41cyclictest394-21snmpd20:16:361
124532520,2sleep00-21swapper/023:51:440
124532520,2sleep00-21swapper/023:51:440
2603995036,10cyclictest0-21swapper/022:46:350
2603995036,10cyclictest0-21swapper/022:46:350
260399493,43cyclictest0-21swapper/020:46:320
260399493,43cyclictest0-21swapper/020:46:320
2603994933,7cyclictest1885-21kworker/0:1+events_freezable23:26:330
2603994933,7cyclictest1885-21kworker/0:1+events_freezable23:26:330
9242480,2sleep20-21swapper/220:31:392
9242480,2sleep20-21swapper/220:31:392
2603994818,16cyclictest55150irq/47-eth021:31:330
2603994818,16cyclictest55150irq/47-eth021:31:330
260499470,5cyclictest181rcu_preempt00:36:321
260499470,5cyclictest181rcu_preempt00:36:321
263082460,2sleep20-21swapper/220:11:452
263082460,2sleep20-21swapper/220:11:452
260599451,30cyclictest2268-21chrt23:26:342
260599451,30cyclictest2268-21chrt23:26:342
2604994526,9cyclictest91-1pr/ttyS023:37:071
2604994526,9cyclictest91-1pr/ttyS023:37:071
50402440,2sleep05044-21proc_pri20:41:420
50402440,2sleep05044-21proc_pri20:41:420
307822440,3sleep30-21swapper/321:51:283
307822440,3sleep30-21swapper/321:51:283
2604994324,9cyclictest91-1pr/ttyS021:29:371
2604994324,9cyclictest91-1pr/ttyS021:29:371
122092430,3sleep20-21swapper/222:26:402
122092430,3sleep20-21swapper/222:26:402
2604994235,4cyclictest281ktimers/122:06:341
2604994235,4cyclictest281ktimers/122:06:341
2604994233,7cyclictest281ktimers/123:46:331
2604994233,6cyclictest281ktimers/120:11:331
2604994233,6cyclictest281ktimers/120:11:331
2603994233,7cyclictest0-21swapper/020:56:330
2603994233,7cyclictest0-21swapper/020:56:330
2604994126,9cyclictest91-1pr/ttyS019:21:361
2604994114,23cyclictest281ktimers/119:36:381
2603994121,18cyclictest25939-21head00:31:370
2603994121,18cyclictest25939-21head00:31:370
260399411,9cyclictest4827-21ntp_states22:06:440
260399411,9cyclictest4827-21ntp_states22:06:440
2603994112,20cyclictest0-21swapper/023:42:590
2603994112,20cyclictest0-21swapper/023:42:590
260399411,10cyclictest663-21runrttasks22:05:370
260399411,10cyclictest663-21runrttasks22:05:370
224372410,3chrt0-21swapper/200:21:412
224372410,3chrt0-21swapper/200:21:412
260399402,7cyclictest19828-21apt-get00:16:310
260399402,7cyclictest19828-21apt-get00:16:310
260399401,10cyclictest18194-21idleruntime19:51:360
2604993929,3cyclictest181rcu_preempt23:15:081
2604993929,3cyclictest181rcu_preempt23:15:081
2604993923,5cyclictest91-1pr/ttyS023:02:071
2604993922,4cyclictest91-1pr/ttyS021:37:371
2604993922,4cyclictest91-1pr/ttyS021:37:371
2604993921,9cyclictest91-1pr/ttyS019:53:331
2604993919,5cyclictest91-1pr/ttyS000:25:551
2604993919,5cyclictest91-1pr/ttyS000:25:551
2604993911,6cyclictest281ktimers/122:21:361
2604993911,6cyclictest281ktimers/122:21:361
260399391,6cyclictest0-21swapper/022:56:360
260399391,6cyclictest0-21swapper/022:56:360
260399391,11cyclictest25355-21apt-get20:11:350
260399391,11cyclictest25355-21apt-get20:11:350
145142390,3sleep30-21swapper/321:06:463
145142390,3sleep30-21swapper/321:06:463
260399382,9cyclictest547-21fschecks_time21:56:380
260399382,9cyclictest547-21fschecks_time21:56:380
2603993826,8cyclictest0-21swapper/023:56:320
2603993822,11cyclictest0-21swapper/000:01:330
260399381,8cyclictest3087-21ntp_states20:36:420
260399381,8cyclictest3087-21ntp_states20:36:420
260399381,12cyclictest7775-21sed23:41:230
260399381,12cyclictest7775-21sed23:41:230
260399381,10cyclictest7891-21runrttasks22:16:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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