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2026-01-12 - 02:22

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 Mon Jan 12, 2026 00:44:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3240521160,2chrt0-21swapper/219:35:432
3240521160,2chrt0-21swapper/219:35:432
316962840,3sleep10-21swapper/122:25:511
316962840,3sleep10-21swapper/122:25:511
178872710,2chrt17888-21needreboot23:15:470
178872710,2chrt17888-21needreboot23:15:470
136442670,3sleep10-21swapper/100:30:501
136442670,3sleep10-21swapper/100:30:501
281082540,4sleep028109-21gltestperf20:50:430
281082540,4sleep028109-21gltestperf20:50:430
71922530,3sleep10-21swapper/119:55:401
71922530,3sleep10-21swapper/119:55:401
40242530,1sleep10-21swapper/122:40:351
40242530,1sleep10-21swapper/122:40:351
18112410,3sleep11814-21fschecks_time19:40:401
52202400,2sleep20-21swapper/222:40:522
52202400,2sleep20-21swapper/222:40:522
101542400,1sleep00-21swapper/000:20:530
101542400,1sleep00-21swapper/000:20:530
99192390,2chrt9920-21/usr/sbin/munin00:20:491
99192390,2chrt9920-21/usr/sbin/munin00:20:491
271082390,1sleep127206-21missed_timers23:40:461
22845993630,5cyclictest25201-21kernelversion23:35:451
22845993630,5cyclictest25201-21kernelversion23:35:451
312842340,2sleep10-21swapper/119:30:521
312842340,2sleep10-21swapper/119:30:521
2284699341,25cyclictest1564-21chrt00:00:362
2284699341,25cyclictest1564-21chrt00:00:362
2284699341,25cyclictest1564-21chrt00:00:362
22844993425,6cyclictest1346-21avahi-daemon00:00:330
22844993425,6cyclictest1346-21avahi-daemon00:00:330
22844993425,6cyclictest1346-21avahi-daemon00:00:330
22845993329,3cyclictest572-21cups-browsed21:35:511
22845993329,3cyclictest572-21cups-browsed21:35:511
22845993329,3cyclictest572-21cups-browsed21:35:511
22845993328,3cyclictest1503-21kworker/u9:3-xprtiod00:01:131
22845993328,3cyclictest1503-21kworker/u9:3-xprtiod00:01:131
22845993327,4cyclictest6399-21idleruntime22:45:451
22845993327,4cyclictest6399-21idleruntime22:45:451
10552330,3sleep20-21swapper/222:30:472
10552330,3sleep20-21swapper/222:30:472
295932320,3sleep1271rcuc/122:20:451
295932320,3sleep1271rcuc/122:20:451
22847993215,11cyclictest15372sleep300:00:333
22847993215,11cyclictest15372sleep300:00:333
22847993215,11cyclictest15372sleep300:00:333
22845993225,5cyclictest0-21swapper/100:00:431
22845993127,3cyclictest31857-21kworker/u9:1-xprtiod00:00:311
22845993127,3cyclictest31857-21kworker/u9:1-xprtiod00:00:311
22845993124,5cyclictest572-21cups-browsed21:10:491
22845993124,5cyclictest572-21cups-browsed21:10:491
22844993118,2cyclictest181rcu_preempt00:00:560
22844993118,2cyclictest181rcu_preempt00:00:560
22844993023,5cyclictest18173-21gltestperf21:50:400
22844993023,5cyclictest18173-21gltestperf21:50:400
22844993023,5cyclictest12271-21sshd20:06:500
22844993023,5cyclictest12271-21sshd20:06:500
22844993021,7cyclictest30616-21threads20:55:520
22844993021,7cyclictest30616-21threads20:55:520
22845992924,3cyclictest10391-21needreboot22:55:461
22845992924,3cyclictest10391-21needreboot22:55:461
22845992924,3cyclictest10391-21needreboot22:55:461
22845992923,5cyclictest31012-21netstat23:50:461
22845992923,5cyclictest15344-21netstat20:15:461
22845992923,5cyclictest15344-21netstat20:15:461
22845992923,5cyclictest1205-21cut21:05:411
22845992923,5cyclictest1205-21cut21:05:411
22845992922,5cyclictest5626-21fschecks_time00:10:421
22845992922,5cyclictest5626-21fschecks_time00:10:421
22844992924,3cyclictest201rcuc/020:04:200
22844992924,3cyclictest201rcuc/020:04:200
22844992923,5cyclictest550-21cron21:10:380
22844992923,5cyclictest550-21cron21:10:380
22844992922,5cyclictest2445-21sshd21:08:140
22844992922,5cyclictest2445-21sshd21:08:140
22844992921,6cyclictest19078-21needreboot20:25:480
22844992921,6cyclictest19078-21needreboot20:25:480
22844992920,7cyclictest26941-21idleruntime-cro22:15:290
22844992920,7cyclictest26941-21idleruntime-cro22:15:290
221322291,2sleep00-21swapper/022:00:470
221322291,2sleep00-21swapper/022:00:470
14252290,3sleep00-21swapper/022:30:530
14252290,3sleep00-21swapper/022:30:530
22845992824,2cyclictest0-21swapper/122:20:411
22845992824,2cyclictest0-21swapper/122:20:411
22845992822,4cyclictest547-21rs:main1
22845992822,4cyclictest547-21rs:main1
22845992822,4cyclictest0-21swapper/100:05:511
22845992822,4cyclictest0-21swapper/100:05:511
22844992823,3cyclictest0-21swapper/000:20:300
22844992823,3cyclictest0-21swapper/000:20:300
22844992822,4cyclictest572-21cups-browsed23:00:500
22844992822,4cyclictest572-21cups-browsed23:00:500
22844992822,4cyclictest3447-21/usr/sbin/munin19:45:440
22844992822,4cyclictest22841-21cyclictest21:55:520
22844992822,4cyclictest22841-21cyclictest21:55:520
22844992821,5cyclictest7343-21fschecks_count19:55:420
22844992821,5cyclictest7343-21fschecks_count19:55:420
22844992820,6cyclictest4981-21fschecks_time21:15:430
22844992820,6cyclictest4981-21fschecks_time21:15:430
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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