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2026-07-02 - 17:13

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #a, 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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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackaslot5s.osadl.org (updated Thu Jul 02, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811000,0rcu_preempt3-21ksoftirqd/009:45:590
81990,0rcu_preempt3-21ksoftirqd/010:10:300
81860,0rcu_preempt19-21ksoftirqd/108:07:051
81760,0rcu_preempt3-21ksoftirqd/010:23:030
81740,0rcu_preempt3689-21apt-get07:52:240
81740,0rcu_preempt3-21ksoftirqd/009:36:070
81730,0rcu_preempt3-21ksoftirqd/011:21:470
81730,0rcu_preempt1246-21munin-node0
81720,0rcu_preempt3-21ksoftirqd/010:43:550
81710,0rcu_preempt3-21ksoftirqd/008:32:320
21171997124,0cyclictest4956-21ping07:57:440
21171997123,0cyclictest10050irq/346-484840009:37:280
81690,0rcu_preempt4956-21ping08:02:390
81670,0rcu_preempt3-21ksoftirqd/008:47:150
81670,0rcu_preempt17939-21meminfo11:07:400
21171996722,0cyclictest0-21swapper/012:03:390
10050660,0irq/346-484840054-21kswapd010:32:360
21171996528,0cyclictest17790-21latency_hist10:02:140
21171996524,0cyclictest0-21swapper/010:52:380
21171996521,0cyclictest10537-21idleruntime-cro09:22:140
81640,0rcu_preempt3-21ksoftirqd/012:32:350
21171996430,0cyclictest7340-21apt-get10:57:240
21171996427,0cyclictest23125-21ssh07:12:270
81630,0rcu_preempt3-21ksoftirqd/008:22:430
21171996328,0cyclictest30687-21ssh10:47:410
21171996327,0cyclictest16887-21ssh11:07:110
21171996322,0cyclictest0-21swapper/009:07:250
21171996321,0cyclictest0-21swapper/011:40:040
81620,0rcu_preempt554-21ssh10:17:280
81620,0rcu_preempt19-21ksoftirqd/112:22:361
81620,0rcu_preempt19-21ksoftirqd/111:37:341
21171996228,0cyclictest28173-21diskmemload12:12:330
21171996227,0cyclictest10816-21apt-get09:22:260
21171996225,0cyclictest0-21swapper/008:52:250
21171996222,0cyclictest0-21swapper/009:51:330
21171996221,0cyclictest0-21swapper/011:34:120
21171996220,0cyclictest0-21swapper/011:26:450
81610,0rcu_preempt3-21ksoftirqd/008:07:320
81610,0rcu_preempt28068-21df_inode10:12:280
81610,0rcu_preempt19-21ksoftirqd/108:12:341
21171996126,0cyclictest18321-21sort10:02:340
21171996122,0cyclictest0-21swapper/011:51:240
21171996121,0cyclictest0-21swapper/009:53:570
21171996120,0cyclictest0-21swapper/011:44:150
21171996119,0cyclictest0-21swapper/012:08:200
21171996116,0cyclictest0-21swapper/011:57:180
81600,0rcu_preempt4956-21ping08:12:360
81600,0rcu_preempt3-21ksoftirqd/009:02:250
81600,0rcu_preempt20078-21apt-get10:37:240
81600,0rcu_preempt19-21ksoftirqd/109:42:291
21171996027,0cyclictest31578-21dropbear12:27:290
21171996026,0cyclictest25948-21runrttasks12:21:580
21171996020,0cyclictest0-21swapper/011:56:490
81590,0rcu_preempt3-21ksoftirqd/008:27:420
21171995926,0cyclictest24448-21ping07:37:420
21171995926,0cyclictest22349-21ssh11:12:270
21171995924,0cyclictest15950-21dropbear09:27:270
81580,0rcu_preempt3-21ksoftirqd/007:47:250
21171995826,0cyclictest9084-21runrttasks11:32:030
21171995824,0cyclictest11092-21chrt10:27:390
21171995824,0cyclictest0-21swapper/008:37:320
21171995822,0cyclictest26419-21apt-get12:22:250
81570,0rcu_preempt19-21ksoftirqd/110:27:311
21171995734,0cyclictest24448-21ping07:22:260
21171995723,0cyclictest0-21swapper/008:17:250
81560,0rcu_preempt19-21ksoftirqd/111:42:431
81560,0rcu_preempt19-21ksoftirqd/110:39:331
81560,0rcu_preempt19-21ksoftirqd/110:02:411
21171995627,0cyclictest21989-21fschecks_count08:47:310
21171995626,0cyclictest24448-21ping07:17:480
81540,0rcu_preempt2270-1kworker/1:2H10:22:321
81540,0rcu_preempt19-21ksoftirqd/112:32:201
81540,0rcu_preempt19-21ksoftirqd/112:07:371
81540,0rcu_preempt19-21ksoftirqd/110:14:291
81540,0rcu_preempt19-21ksoftirqd/109:41:401
81540,0rcu_preempt19-21ksoftirqd/109:24:531
81540,0rcu_preempt19-21ksoftirqd/108:23:371
81540,0rcu_preempt19-21ksoftirqd/108:07:311
81540,0rcu_preempt19-21ksoftirqd/107:17:381
21171995430,0cyclictest24448-21ping07:42:250
81530,0rcu_preempt19-21ksoftirqd/112:18:191
81530,0rcu_preempt19-21ksoftirqd/111:59:011
81530,0rcu_preempt19-21ksoftirqd/111:01:461
81530,0rcu_preempt19-21ksoftirqd/110:55:351
81530,0rcu_preempt19-21ksoftirqd/110:34:211
81530,0rcu_preempt19-21ksoftirqd/108:17:321
81520,0rcu_preempt24448-21ping07:27:250
81520,0rcu_preempt19-21ksoftirqd/111:02:221
81520,0rcu_preempt19-21ksoftirqd/109:54:211
21171995222,0cyclictest0-21swapper/008:57:250
81510,0rcu_preempt19-21ksoftirqd/109:17:551
21171995128,0cyclictest24448-21ping07:32:240
21171995124,0cyclictest22813-21cat07:12:140
81500,0rcu_preempt19-21ksoftirqd/110:42:371
81500,0rcu_preempt19-21ksoftirqd/107:26:501
2117299503,0cyclictest22928-21ssh10:07:251
2117299495,0cyclictest32264-21ssh10:49:161
2117299492,0cyclictest7452-21ssh12:02:371
2117299492,0cyclictest29274-21sh11:52:261
2117299492,0cyclictest21002-21grep09:32:321
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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