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2026-04-25 - 19:52
OSADL QA Farm

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #3, slot #4

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
Characteristics of the 100 highest latencies:
System rack3slot4.osadl.org (updated Sat Apr 25, 2026 12:46:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
38854829914829,71cyclictest3928944-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		09:10:220
38854829914255,64cyclictest3941646-21kworker/u12:3+events_unbound@
flush_memcg_stats_dwork		11:55:550
38854829914167,39cyclictest3911622-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		09:15:220
38854829914019,110cyclictest3919538-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		08:42:290
38854829913715,98cyclictest3879137-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		07:43:180
38854829913590,24cyclictest0-21swapper/008:10:370
38854829913329,67cyclictest3928944-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		09:05:070
38854829913320,89cyclictest0-21swapper/011:03:350
3885482991297,97cyclictest4185754-21kworker/u12:3+events_unbound@
flush_memcg_stats_dwork		12:25:310
3885482991289,73cyclictest3911622-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		08:26:510
3885482991262,7cyclictest3952039-21ssh09:25:120
38854829912484,19cyclictest3970848-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		10:01:240
38854829911866,30cyclictest4008746-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		10:25:190
38854829911677,19cyclictest4046029-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		10:41:120
388550899111103,4cyclictest0-21swapper/511:56:335
38854879911096,7cyclictest3879137-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		07:35:151
3885482991092,97cyclictest3866499-1kworker/0:2H+events_highpri@
mix_interrupt_randomness		07:10:380
38854829910675,21cyclictest68950irq/527-eth0-Tx09:20:130
3885482991052,71cyclictest0-21swapper/009:45:020
3885482991051,87cyclictest0-21swapper/007:35:410
38854829910515,73cyclictest3941646-21kworker/u12:3+events_unbound@
flush_memcg_stats_dwork		10:12:450
3885482991032,89cyclictest0-21swapper/010:30:550
3885482991032,89cyclictest0-21swapper/010:30:550
3885482991031,82cyclictest0-21swapper/008:15:360
38854829910225,48cyclictest0-21swapper/011:45:250
3885482991021,89cyclictest0-21swapper/011:05:350
3885482991021,87cyclictest48-21rcuop/411:23:470
3885482991021,87cyclictest48-21rcuop/411:23:470
3885482991021,86cyclictest0-21swapper/008:30:280
38854879910165,10cyclictest3941646-21kworker/u12:3+events_unbound@
flush_memcg_stats_dwork		12:15:311
38854829910163,25cyclictest3887233-21systemd-userwor07:15:030
38854829910163,25cyclictest3887233-21systemd-userwor07:15:020
38854829910163,23cyclictest69050irq/528-eth0-Tx12:15:180
3885482991012,6cyclictest48-21rcuop/411:38:490
3885482991012,68cyclictest4045446-21ssh10:35:430
3885482991012,68cyclictest4045446-21ssh10:35:420
3885482991011,90cyclictest0-21swapper/009:55:430
3885482991011,88cyclictest0-21swapper/011:40:150
3885482991011,88cyclictest0-21swapper/009:39:570
3885482991011,88cyclictest0-21swapper/009:39:570
393102721000,4sleep30-21swapper/309:00:343
38854829910067,23cyclictest69150irq/529-eth0-Tx12:08:380
3885482991001,88cyclictest0-21swapper/010:16:240
3885482991001,85cyclictest15-21rcuc/007:45:350
3885482991001,85cyclictest15-21rcuc/007:45:340
3885482991001,85cyclictest0-21swapper/008:45:140
3885482999963,22cyclictest0-21swapper/008:20:150
3885482999963,22cyclictest0-21swapper/008:20:140
388548299992,83cyclictest0-21swapper/010:59:050
388548299991,93cyclictest0-21swapper/007:55:310
3885482999868,20cyclictest68950irq/527-eth0-Tx10:24:450
3885482999866,22cyclictest68950irq/527-eth0-Tx11:30:450
3885482999864,22cyclictest69050irq/528-eth0-Tx07:30:220
3885482999864,21cyclictest69150irq/529-eth0-Tx12:30:280
3885482999833,46cyclictest68950irq/527-eth0-Tx12:10:210
388548299982,77cyclictest0-21swapper/010:05:210
388548299982,76cyclictest0-21swapper/008:05:310
388548299982,76cyclictest0-21swapper/008:05:300
3885482999825,56cyclictest4097583-21/usr/sbin/munin11:15:460
3885482999825,56cyclictest4097583-21/usr/sbin/munin11:15:460
3885482999765,22cyclictest69050irq/528-eth0-Tx09:34:230
3885482999765,22cyclictest69050irq/528-eth0-Tx09:34:220
3885482999667,20cyclictest69050irq/528-eth0-Tx08:35:260
3885482999664,22cyclictest68950irq/527-eth0-Tx12:20:380
388548299962,5cyclictest3931034-21ntp_states09:00:350
388548299952,82cyclictest0-21swapper/011:51:050
3885487999478,8cyclictest4072543-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		11:20:391
3885487999478,8cyclictest4072543-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		11:20:391
388548299942,73cyclictest0-21swapper/012:00:170
3885482999411,64cyclictest3879137-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		07:29:270
3885482999410,58cyclictest15-21rcuc/010:45:220
3885508999388,2cyclictest0-21swapper/508:20:295
3885508999388,2cyclictest0-21swapper/508:20:285
3885508999387,3cyclictest0-21swapper/507:20:235
388548299932,72cyclictest0-21swapper/009:00:010
388548299932,72cyclictest0-21swapper/009:00:000
388548299931,86cyclictest0-21swapper/011:25:290
388548299931,74cyclictest0-21swapper/009:50:150
3885508999286,3cyclictest0-21swapper/507:40:235
3885508999285,3cyclictest0-21swapper/512:10:005
3885487999264,8cyclictest4125815-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		11:43:361
388548299922,70cyclictest47-21rcuog/410:50:270
388548299921,80cyclictest0-21swapper/008:50:370
388548299921,75cyclictest0-21swapper/011:12:100
40390352910,4sleep44039034-21ssh10:30:454
40390352910,4sleep44039034-21ssh10:30:454
3885487999176,8cyclictest3886075-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		07:25:141
3885482999163,13cyclictest68950irq/527-eth0-Tx07:20:140
3885492999065,8cyclictest4072543-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		11:01:372
3885487999078,6cyclictest4072543-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		12:01:331
3885482999057,22cyclictest0-21swapper/012:37:190
388548299891,83cyclictest0-21swapper/008:02:280
3885492998862,9cyclictest3911622-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		09:12:522
3885487998874,7cyclictest3886075-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		07:10:351
3885482998817,3cyclictest0-21swapper/009:45:160
3885482998817,3cyclictest0-21swapper/009:45:150
3885487998772,7cyclictest3941646-21kworker/u12:3+events_unbound@
flush_memcg_stats_dwork		11:15:471
3885487998772,7cyclictest3941646-21kworker/u12:3+events_unbound@
flush_memcg_stats_dwork		11:15:471
3885482998753,22cyclictest0-21swapper/007:50:300
3885508998580,2cyclictest0-21swapper/509:50:555
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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