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2025-06-19 - 17:17

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #5

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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  Phytec
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 rackbslot5s.osadl.org (updated Thu Jun 19, 2025 12:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2810855995246,4cyclictest2877216-21kworker/u8:0+events_unbound10:20:541
2810852994732,11cyclictest121ktimers/007:25:170
2810855994536,5cyclictest2908627-21munin-plugin-st11:50:001
2810855994536,5cyclictest2908627-21munin-plugin-st11:50:001
2810860994436,5cyclictest2842521-21cat08:40:002
2810860994436,5cyclictest2842521-21cat08:40:002
2810855994334,6cyclictest2814447-21kworker/u8:0+events_unbound07:20:271
2810855994331,8cyclictest231ktimers/110:00:131
2810852994337,4cyclictest2893500-21kworker/u8:1+events_unbound11:16:040
2810852994336,5cyclictest2925732-21kworker/u8:2+events_unbound12:36:140
2810852994336,5cyclictest2925732-21kworker/u8:2+events_unbound12:36:130
2810852994335,4cyclictest2877292-21sendmail10:20:010
2810852994334,5cyclictest2918575-21grep12:15:250
2810855994232,6cyclictest2814328-21unixbench_multi07:15:271
2810855994232,6cyclictest2814328-21unixbench_multi07:15:271
2810852994229,9cyclictest2891363-21sendmail11:00:000
2810852994127,4cyclictest131rcu_preempt09:15:480
2810865994033,4cyclictest2819925-21munin-plugin-st07:35:013
2810860994032,4cyclictest2849336-21audit_send_reply09:00:012
2810855994032,5cyclictest2862979-21cron09:40:001
2810852994028,8cyclictest2816049-21grep07:20:300
2810852994027,8cyclictest2899633-21grep11:20:230
2810852994020,12cyclictest131rcu_preempt10:45:300
2810852994020,12cyclictest131rcu_preempt10:45:300
2810865993931,4cyclictest2870247-21idleruntime-cro10:00:003
2810865993931,4cyclictest2870247-21idleruntime-cro10:00:003
2810860993929,6cyclictest0-21swapper/207:45:022
2810852993921,9cyclictest131rcu_preempt07:56:270
2810860993830,4cyclictest0-21swapper/210:20:012
2810855993831,4cyclictest2877275-21munin-plugin-st10:20:011
2810855993829,6cyclictest2898381-21munin-run11:20:001
2810852993832,4cyclictest2856070-21kworker/u8:2+events_unbound10:10:520
2810852993832,4cyclictest2819758-21kworker/u8:3+events_unbound08:05:310
2810852993818,3cyclictest0-21swapper/009:38:320
2810865993726,8cyclictest2922203-21grep12:25:253
2810865993726,7cyclictest2926111-21sendmail12:40:003
2810865993726,7cyclictest2926111-21sendmail12:40:003
2810855993728,6cyclictest2852293-21unixbench_multi09:05:261
2810855993725,7cyclictest0-21swapper/110:50:261
2810855993724,8cyclictest0-21swapper/110:05:261
2810852993731,4cyclictest2831779-21kworker/u8:1+events_unbound08:20:350
2810852993730,5cyclictest2898410-21kworker/u8:2+events_unbound11:41:090
2810852993727,5cyclictest0-21swapper/011:25:280
2810852993725,4cyclictest131rcu_preempt09:01:550
2810852993721,4cyclictest131rcu_preempt12:11:420
2810852993721,4cyclictest0-21swapper/009:13:220
2810852993717,4cyclictest0-21swapper/012:25:290
2810865993627,4cyclictest0-21swapper/307:40:173
2810860993625,8cyclictest2926085-21sh12:40:002
2810860993625,8cyclictest2926085-21sh12:40:002
2810860993625,6cyclictest0-21swapper/211:35:252
2810860993621,11cyclictest0-21swapper/209:20:262
2810852993628,4cyclictest0-21swapper/008:40:270
2810852993626,6cyclictest2870249-21idleruntime-cro10:00:000
2810852993626,6cyclictest2870249-21idleruntime-cro10:00:000
2810852993623,4cyclictest131rcu_preempt11:05:400
2810852993622,4cyclictest131rcu_preempt11:58:510
2810852993619,3cyclictest0-21swapper/007:51:430
2810852993618,5cyclictest131rcu_preempt08:25:020
2810852993618,4cyclictest0-21swapper/010:38:080
2810852993617,9cyclictest131rcu_preempt08:11:460
2810865993526,4cyclictest0-21swapper/311:55:173
2810865993525,6cyclictest0-21swapper/310:25:413
2810865993524,6cyclictest0-21swapper/307:15:013
2810865993524,6cyclictest0-21swapper/307:15:013
2810865993523,9cyclictest2840433-21sshd08:30:363
2810860993523,8cyclictest2839556-21cut08:30:192
281085599354,4cyclictest131rcu_preempt09:30:131
281085599354,4cyclictest131rcu_preempt09:30:131
2810855993527,5cyclictest146-21jbd2/mmcblk1p2-807:30:271
2810855993527,4cyclictest0-21swapper/112:30:171
2810855993527,4cyclictest0-21swapper/112:30:171
2810852993522,5cyclictest131rcu_preempt09:24:420
2810852993519,5cyclictest131rcu_preempt10:29:100
2810852993519,5cyclictest131rcu_preempt09:05:190
2810852993516,10cyclictest131rcu_preempt08:52:520
2810852993515,12cyclictest131rcu_preempt11:35:250
2810852993514,11cyclictest131rcu_preempt07:40:180
2810865993427,4cyclictest2863016-21sendmail09:40:003
2810865993426,4cyclictest0-21swapper/310:05:513
2810865993425,4cyclictest0-21swapper/312:15:153
2810860993426,4cyclictest0-21swapper/211:05:012
2810860993426,4cyclictest0-21swapper/210:10:272
2810855993422,7cyclictest2859159-21grep09:25:271
2810855993418,14cyclictest24-21ksoftirqd/108:00:111
281085299349,7cyclictest11-21ksoftirqd/007:15:040
281085299349,7cyclictest11-21ksoftirqd/007:15:030
2810852993427,5cyclictest2860358-21kworker/u8:1+events_unbound09:30:480
2810852993427,5cyclictest2860358-21kworker/u8:1+events_unbound09:30:470
2810852993427,4cyclictest2849341-21munin-plugin-st09:00:010
2810852993420,4cyclictest131rcu_preempt12:24:000
2810852993420,4cyclictest131rcu_preempt08:36:210
2810852993420,4cyclictest131rcu_preempt08:36:210
2810852993417,10cyclictest131rcu_preempt11:30:180
2810852993416,5cyclictest131rcu_preempt12:00:460
2810852993414,9cyclictest131rcu_preempt10:08:170
2810852993414,4cyclictest0-21swapper/007:32:390
2810852993414,11cyclictest2915175-21kworker/u8:1-events_unbound12:08:090
2810852993414,10cyclictest131rcu_preempt09:45:280
2810852993411,9cyclictest11-21ksoftirqd/011:15:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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