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2026-04-04 - 12:29

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 Sat Apr 04, 2026 00:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
141902860,1sleep08757-21kworker/u10:3+rpciod00:02:430
141902860,1sleep08757-21kworker/u10:3+rpciod00:02:430
316232810,1sleep031624-21sshd23:23:030
80282760,3chrt0-21swapper/022:22:000
80282760,3chrt0-21swapper/022:22:000
246442750,4sleep30-21swapper/321:37:093
246442750,4sleep30-21swapper/321:37:093
260232570,5sleep026005-21cpuspeed00:37:000
260232570,5sleep026005-21cpuspeed00:37:000
260232570,5sleep026005-21cpuspeed00:37:000
153872560,2sleep30-21swapper/319:47:063
153872560,2sleep30-21swapper/319:47:063
74512540,3sleep20-21swapper/219:26:592
74512540,3sleep20-21swapper/219:26:592
162699536,34cyclictest13332-21if_wlan000:02:021
162699536,34cyclictest13332-21if_wlan000:02:021
161399481,40cyclictest12619-21latency_hist00:01:550
161399481,40cyclictest12619-21latency_hist00:01:550
32332440,3sleep20-21swapper/220:42:012
15562440,2sleep00-21swapper/023:31:550
79232400,3sleep30-21swapper/323:47:073
79232400,3sleep30-21swapper/323:47:073
310542400,4chrt201rcuc/021:57:000
310542400,4chrt201rcuc/021:57:000
1613994034,4cyclictest649-21idleruntime-cro20:36:470
1613994034,4cyclictest649-21idleruntime-cro20:36:470
123422400,2chrt0-21swapper/222:32:072
123422400,2chrt0-21swapper/222:32:072
1626993831,5cyclictest1346-21avahi-daemon22:21:471
1626993831,5cyclictest1346-21avahi-daemon22:21:471
1626993831,5cyclictest1346-21avahi-daemon22:21:471
1613993732,4cyclictest19993-21cron20:01:480
1613993732,4cyclictest19993-21cron20:01:480
1613993732,4cyclictest19993-21cron20:01:480
1613993627,7cyclictest17318-21fschecks_count22:47:000
127832360,3chrt12680-40mandb00:01:551
127832360,3chrt12680-40mandb00:01:551
1613993527,6cyclictest17504-21threads19:52:100
1613993527,6cyclictest16033-21netstat22:42:060
1613993527,6cyclictest16033-21netstat22:42:060
1626993427,5cyclictest31934-21kernelversion20:32:021
1626993427,5cyclictest31934-21kernelversion20:32:021
1613993425,7cyclictest5880-21kernelversion23:42:020
1613993425,7cyclictest5880-21kernelversion23:42:020
1613993425,7cyclictest5880-21kernelversion23:42:020
1613993424,8cyclictest3293-21latency_hist23:36:480
1613993424,8cyclictest3293-21latency_hist23:36:480
1613993410,5cyclictest171ktimers/023:40:330
1613993410,5cyclictest171ktimers/023:40:330
162899333,20cyclictest12744-21chrt00:01:533
162899333,20cyclictest12744-21chrt00:01:533
278402310,4sleep20-21swapper/221:47:052
278402310,4sleep20-21swapper/221:47:052
1626993126,3cyclictest0-21swapper/123:01:471
1626993126,3cyclictest0-21swapper/123:01:471
1626993126,3cyclictest0-21swapper/123:01:471
1626993125,4cyclictest17044-21latency19:52:031
1626993123,6cyclictest24970-21threads20:12:081
1626993123,6cyclictest24970-21threads20:12:081
161399315,6cyclictest201rcuc/020:30:270
1613993126,4cyclictest1593-21cyclictest00:07:090
1613993126,4cyclictest1593-21cyclictest00:07:090
1613993126,4cyclictest1593-21cyclictest00:07:090
1613993123,6cyclictest30121-21latency_hist23:21:500
1613993123,6cyclictest30121-21latency_hist23:21:500
1613993123,6cyclictest30121-21latency_hist23:21:500
1613993123,6cyclictest201rcuc/021:50:390
1613993123,6cyclictest201rcuc/021:50:390
1613993026,3cyclictest90-1pr/ttyS020:19:230
1613993026,3cyclictest90-1pr/ttyS020:19:230
1613993026,3cyclictest90-1pr/ttyS020:19:230
1613993023,5cyclictest18643-21fschecks_count00:17:000
1613993023,5cyclictest18643-21fschecks_count00:17:000
1613993022,6cyclictest6560-21missed_timers22:17:020
1613993022,6cyclictest6560-21missed_timers22:17:020
1613993022,6cyclictest6560-21missed_timers22:17:020
1613993022,6cyclictest2583-21latency_hist20:41:470
1613993022,6cyclictest2583-21latency_hist20:41:470
1613993022,6cyclictest2583-21latency_hist20:41:470
1613993021,7cyclictest16917-21threads21:17:100
1613993021,7cyclictest16917-21threads21:17:100
1613993016,4cyclictest181rcu_preempt22:13:430
1613993016,4cyclictest181rcu_preempt22:13:430
1613993014,2cyclictest181rcu_preempt19:26:590
1613993014,2cyclictest181rcu_preempt19:26:590
76102290,3sleep30-21swapper/319:27:003
76102290,3sleep30-21swapper/319:27:003
1626992921,5cyclictest14802-21fschecks_count19:46:591
1626992921,5cyclictest14802-21fschecks_count19:46:591
161399294,5cyclictest201rcuc/021:27:310
161399294,5cyclictest201rcuc/021:27:310
1613992924,3cyclictest90-1pr/ttyS022:30:050
1613992924,3cyclictest90-1pr/ttyS022:30:050
1613992923,4cyclictest0-21swapper/021:47:000
1613992923,4cyclictest0-21swapper/021:47:000
1613992922,5cyclictest7983-21ntp_kernel_pll_23:47:070
1613992922,5cyclictest7983-21ntp_kernel_pll_23:47:070
1613992922,5cyclictest23618-21fschecks_time21:36:590
1613992922,5cyclictest23618-21fschecks_time21:36:590
1613992922,5cyclictest1593-21cyclictest21:10:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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