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2025-12-23 - 11:03

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, slot #7

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 50 highest latencies:
System rack2slot7s.osadl.org (updated Mon Dec 22, 2025 19:55:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3132898997453,16cyclictest3936626-21sh18:09:430
3132898997453,16cyclictest3936626-21sh18:09:430
3132900996153,5cyclictest3941987-21sort18:10:012
3132900996153,5cyclictest3941987-21sort18:10:012
3132898996033,22cyclictest3353870-21wc17:39:470
3132900995829,26cyclictest3973053-21sh18:11:162
3132900995829,25cyclictest3265388-21spawn17:34:402
3132899995733,20cyclictest3938436-21sh18:09:511
3132899995733,20cyclictest3938436-21sh18:09:511
3132899995630,22cyclictest3422305-21sh17:42:541
3132900995428,22cyclictest3406552-21multi.sh17:42:142
3132899995334,16cyclictest3986149-21sh18:11:451
3132900995128,20cyclictest3666898-21spawn18:03:402
3132899995128,20cyclictest0-21swapper/118:40:011
3132898995144,4cyclictest3979446-21multi.sh18:11:300
3132900994931,14cyclictest563-21avahi-daemon18:19:502
3132898994941,5cyclictest3409475-21sh17:42:210
3132898994735,9cyclictest3440993-21fstime17:52:060
3132898994722,3cyclictest0-21swapper/017:49:530
313289999462,27cyclictest4019810-21ntpq18:24:451
313289999462,27cyclictest4019810-21ntpq18:24:451
313289999461,35cyclictest3295261-21spawn17:34:481
3132898994640,3cyclictest0-21swapper/017:25:020
3132900994522,20cyclictest0-21swapper/217:49:402
313290099441,26cyclictest3135210-21ntpq17:14:422
3132899994433,8cyclictest3439477-21execl17:49:481
3132898994328,10cyclictest3442559-21fstime17:56:560
3132900994221,18cyclictest3324816-21sh17:37:332
313289999421,25cyclictest4023357-21sed18:35:021
313289899422,32cyclictest3291090-21spawn17:34:450
3132899994132,6cyclictest674-21gdbus18:19:451
3132900994030,6cyclictest4020406-21idleruntime-cro18:25:002
3132900994030,6cyclictest4020406-21idleruntime-cro18:25:002
3132900994019,18cyclictest0-21swapper/217:50:172
3132899994033,4cyclictest3356988-21idleruntime-cro17:40:011
3132899994021,16cyclictest3650247-21spawn18:03:371
3132899994015,22cyclictest3135753-21unixbench_singl17:14:521
313289999401,24cyclictest3441058-21fstime17:54:511
313289999401,20cyclictest3139123-21cat17:25:021
313290099391,34cyclictest4022805-21ntpq18:34:462
3132898993930,6cyclictest3139721-21if_eth017:29:400
3132898993926,10cyclictest0-21swapper/018:03:360
313290099381,32cyclictest3443372-21ntpq17:59:452
313290099380,32cyclictest3139322-21fstime17:28:272
313289999380,23cyclictest3134341-21latency_hist17:10:021
313290099371,33cyclictest4021325-21ntpq18:29:442
313290099371,32cyclictest3133291-21/usr/sbin/munin17:09:362
313290099371,31cyclictest4024237-21ntpq18:39:462
313289999374,29cyclictest3442557-21fstime17:57:021
313289999370,21cyclictest3139752-21/usr/sbin/munin17:29:401
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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