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2025-12-26 - 17:19

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 100 highest latencies:
System rack2slot7s.osadl.org (updated Fri Dec 26, 2025 07:55:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3116799995444,6cyclictest3916576-21sh06:09:520
3116799995438,13cyclictest3423320-21execl05:49:460
3116799995417,31cyclictest12550irq/33-eth005:39:460
3116799995417,31cyclictest12550irq/33-eth005:39:460
3116801995142,6cyclictest4001020-21latency_hist06:35:022
3116801995141,6cyclictest3410030-21od05:43:042
3116800995141,6cyclictest3915192-21sh06:09:481
3116799995134,14cyclictest3378423-21multi.sh05:41:450
3116801995041,5cyclictest3873990-21sh06:08:092
3116800994840,5cyclictest3341502-21idleruntime-cro05:40:011
3116800994840,5cyclictest3341502-21idleruntime-cro05:40:011
3116800994839,6cyclictest3933879-21multi.sh06:10:331
3116799994834,11cyclictest3987554-21multi.sh06:12:410
3116801994537,5cyclictest3926393-21sh06:10:162
3116800994435,5cyclictest3348252-21multi.sh05:40:301
3116800994336,4cyclictest3423319-21execl05:50:011
3116801994233,6cyclictest3423320-21execl05:49:512
3116800994233,6cyclictest3738249-21spawn06:04:031
3116800994233,6cyclictest3738249-21spawn06:04:031
3116801994132,6cyclictest3338483-21sh05:39:482
3116801994132,6cyclictest3338483-21sh05:39:482
3116800994133,6cyclictest3263497-21spawn05:34:381
3116800994035,3cyclictest0-21swapper/105:56:461
3116799993932,5cyclictest3724531-21spawn06:04:000
3116799993932,5cyclictest3724531-21spawn06:04:000
3116801993832,4cyclictest3116798-21cyclictest06:04:472
3116801993832,4cyclictest3116798-21cyclictest06:04:472
3116799993829,7cyclictest3996523-21sh06:20:010
3116799993718,3cyclictest0-21swapper/005:56:120
3116801993629,3cyclictest0-21swapper/205:34:512
3116801993623,9cyclictest4001850-21ntpq06:39:462
3116800993627,6cyclictest3424790-21execl05:50:501
311680199356,9cyclictest3117698-21ntpq05:09:482
3116801993427,3cyclictest0-21swapper/205:50:062
3116801993424,6cyclictest369-21systemd-journal05:20:012
3116799993427,5cyclictest3116811-21systemd-run05:05:010
3116799993426,6cyclictest3119705-21/usr/sbin/munin05:15:020
3116801993328,2cyclictest0-21swapper/205:59:452
3116800993325,5cyclictest3118809-21gltestperf05:14:411
3116799993316,6cyclictest564-21dbus-daemon06:32:280
311680199327,8cyclictest3123888-21ntpq05:29:442
3116801993222,5cyclictest3998927-21ntpq06:29:462
3116800993224,5cyclictest3989587-21kworker/u8:8+xprtiod06:25:011
3116800993218,3cyclictest171rcu_preempt05:21:141
3116799993222,8cyclictest4002463-21sendmail06:40:010
3116799993214,6cyclictest171rcu_preempt05:34:010
3116800993124,4cyclictest4000980-21cron06:35:011
3116800993123,5cyclictest3121402-21sendmail05:20:011
3116799993118,3cyclictest0-21swapper/005:51:050
3116799993111,7cyclictest171rcu_preempt05:09:480
311680199305,8cyclictest3997663-21sensors_volt06:24:552
311680099306,11cyclictest271ktimers/105:28:441
3116800993024,3cyclictest0-21swapper/106:20:021
3116800993023,4cyclictest3998589-21gltestperf06:29:401
3116800993016,4cyclictest3111641-21kworker/u8:6-xprtiod06:40:021
311679999308,4cyclictest151ktimers/006:29:490
3116799993020,6cyclictest151ktimers/005:24:470
3116801992914,12cyclictest3996017-21ntpq06:19:462
3116799992912,5cyclictest151ktimers/005:29:490
3116800992816,3cyclictest171rcu_preempt05:06:261
311679999283,12cyclictest151ktimers/005:19:450
3116799992816,4cyclictest3997079-21fschecks_count06:24:410
311680199272,8cyclictest3121668-21execl05:20:502
3116801992716,8cyclictest3116761-21cut05:05:012
3116800992713,12cyclictest271ktimers/105:05:001
311680199269,4cyclictest36-21ksoftirqd/205:14:402
311680299181,8cyclictest0-21swapper/306:04:463
311680299181,8cyclictest0-21swapper/306:04:463
311680299164,7cyclictest0-21swapper/305:44:483
311680299163,6cyclictest0-21swapper/305:39:473
311680299163,6cyclictest0-21swapper/305:39:473
311680299152,8cyclictest0-21swapper/305:49:453
311680299152,7cyclictest0-21swapper/305:59:453
311680299151,6cyclictest0-21swapper/306:39:453
311680299142,7cyclictest0-21swapper/306:11:323
311680299141,8cyclictest0-21swapper/306:09:513
311680299141,6cyclictest0-21swapper/305:14:473
311680299131,3cyclictest0-21swapper/305:19:443
311680299122,6cyclictest0-21swapper/305:50:443
311680299122,5cyclictest0-21swapper/305:28:033
311680299122,4cyclictest0-21swapper/306:34:073
311680299121,6cyclictest0-21swapper/305:34:523
311680299121,5cyclictest0-21swapper/306:24:483
311680299111,6cyclictest0-21swapper/306:20:023
31168029991,5cyclictest0-21swapper/306:29:433
31168029991,5cyclictest0-21swapper/305:24:453
31168029991,5cyclictest0-21swapper/305:10:003
31168029971,3cyclictest0-21swapper/305:05:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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