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2026-06-29 - 17:02

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 highest latencies:
System rackaslot5s.osadl.org (updated Mon Jun 29, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811210,0rcu_preempt5234-21dropbear07:42:321
811210,0rcu_preempt19-21ksoftirqd/109:12:351
811130,0rcu_preempt31095-21dropbear07:22:311
811070,0rcu_preempt3-21ksoftirqd/011:00:370
811020,0rcu_preempt0-21swapper/107:32:351
81970,0rcu_preempt19-21ksoftirqd/112:18:491
81910,0rcu_preempt0-21swapper/011:41:090
81870,0rcu_preempt19-21ksoftirqd/109:37:341
81820,0rcu_preempt19-21ksoftirqd/109:58:171
81800,0rcu_preempt19-21ksoftirqd/108:12:421
81770,0rcu_preempt19-21ksoftirqd/112:12:121
81740,0rcu_preempt0-21swapper/107:27:411
81720,0rcu_preempt2412-21ssh11:53:011
81720,0rcu_preempt19-21ksoftirqd/107:41:201
25827997027,0cyclictest6332-1kworker/0:1H11:27:400
25827996826,0cyclictest962-1kworker/0:0H11:55:190
25827996826,0cyclictest6973-1kworker/0:0H10:23:260
25827996826,0cyclictest32336-1kworker/0:0H09:42:280
25827996826,0cyclictest30182-1kworker/0:1H10:44:000
25827996826,0cyclictest2951-1kworker/0:0H10:49:180
81670,0rcu_preempt19-21ksoftirqd/111:24:521
81670,0rcu_preempt19-21ksoftirqd/111:20:511
81660,0rcu_preempt19-21ksoftirqd/110:20:471
25827996625,0cyclictest17437-1kworker/0:1H12:23:460
25827996525,0cyclictest21777-1kworker/0:0H10:36:060
25827996525,0cyclictest19689-1kworker/0:3H10:03:230
81640,0rcu_preempt19-21ksoftirqd/110:48:311
25827996431,0cyclictest7643-21munin-node0
25827996430,0cyclictest15711-21apt-get12:07:280
25827996427,0cyclictest27951-21munin-node0
25827996426,0cyclictest22353-1kworker/0:2H12:14:380
25827996425,0cyclictest29500-1kworker/0:3H10:18:180
25827996424,0cyclictest32336-1kworker/0:0H09:39:460
81630,0rcu_preempt19-21ksoftirqd/110:52:521
25827996328,0cyclictest9397-21ssh12:00:450
25827996325,0cyclictest19687-1kworker/0:0H10:00:000
81620,0rcu_preempt19-21ksoftirqd/111:37:181
25827996227,0cyclictest30680-21sshd11:16:420
25827996226,0cyclictest7823-1kworker/0:2H10:56:440
25827996226,0cyclictest26346-21rm10:38:400
25827996226,0cyclictest18956-1kworker/0:0H11:06:090
25827996222,0cyclictest10050irq/346-484840009:35:260
25827996220,0cyclictest17581-1kworker/0:1H09:26:390
81610,0rcu_preempt54-21kswapd010:33:021
81610,0rcu_preempt0-21swapper/107:47:421
81610,0rcu_preempt0-21swapper/107:47:421
25827996125,0cyclictest22462-1kworker/0:0H09:31:300
25827996025,0cyclictest17581-1kworker/0:1H09:53:340
81590,0rcu_preempt19-21ksoftirqd/112:02:271
81590,0rcu_preempt19-21ksoftirqd/111:32:571
81590,0rcu_preempt19-21ksoftirqd/110:41:571
25827995925,0cyclictest27392-21diskmemload11:46:110
25827995924,0cyclictest29196-1kworker/0:1H08:57:330
81580,0rcu_preempt19-21ksoftirqd/111:02:591
25827995826,0cyclictest19813-21munin-node0
25827995824,0cyclictest0-21swapper/012:32:380
81570,0rcu_preempt19-21ksoftirqd/112:12:381
25827995727,0cyclictest2811-1kworker/0:3H09:12:380
25827995727,0cyclictest28067-1kworker/0:3H12:22:050
25827995724,0cyclictest29851-21ssh11:47:560
81560,0rcu_preempt3-21ksoftirqd/007:57:280
25827995625,0cyclictest12529-1kworker/0:2H12:05:200
25827995624,0cyclictest5429-21ssh12:29:220
135142560,0chrt9950irq/345-484840010:58:351
81550,0rcu_preempt19-21ksoftirqd/111:42:401
81550,0rcu_preempt0-21swapper/112:34:231
25827995529,0cyclictest27179-21runrttasks08:47:410
25827995525,0cyclictest54-21kswapd011:36:290
81540,0rcu_preempt3-21ksoftirqd/009:07:300
81540,0rcu_preempt17649-21ssh09:24:041
81540,0rcu_preempt0-21swapper/109:29:381
25827995426,0cyclictest23898-1kworker/0:2H11:09:190
25827995423,0cyclictest2795-21ssh11:21:080
25827995421,0cyclictest13250-21apt-get08:07:280
81530,0rcu_preempt19-21ksoftirqd/112:27:321
81530,0rcu_preempt0-21swapper/111:58:181
25827995326,0cyclictest2810-1kworker/0:0H09:19:440
25827995326,0cyclictest11883-1kworker/0:2H10:27:370
25827995321,0cyclictest32136-21ssh10:12:250
81520,0rcu_preempt19-21ksoftirqd/107:58:381
81520,0rcu_preempt0-21swapper/109:09:461
25827995230,0cyclictest9495-21ping08:02:290
25827995229,0cyclictest29110-21ping07:32:300
25827995225,0cyclictest6332-1kworker/0:1H11:25:030
81510,0rcu_preempt3-21ksoftirqd/007:02:350
81510,0rcu_preempt3-21ksoftirqd/007:02:350
25827995128,0cyclictest29110-21ping07:37:340
25827995127,0cyclictest28504-21munin-node0
25827995127,0cyclictest28504-21munin-node0
25827995118,0cyclictest29110-21ping07:32:170
81500,0rcu_preempt19-21ksoftirqd/111:49:011
81500,0rcu_preempt19-21ksoftirqd/110:07:381
81500,0rcu_preempt19-21ksoftirqd/108:23:381
25827995024,0cyclictest3-21ksoftirqd/007:22:270
81490,0rcu_preempt20516-21kworker/1:009:02:401
81490,0rcu_preempt1339-21snmpd08:37:410
25827994934,0cyclictest22066-21missed_timers08:32:410
25827994929,0cyclictest29281-21apt-get07:17:290
25827994927,0cyclictest29110-21ping07:42:270
81480,0rcu_preempt346-21diskmemload09:47:431
81480,0rcu_preempt19-21ksoftirqd/110:22:341
81480,0rcu_preempt0-21swapper/109:46:261
25827994834,0cyclictest9495-21ping08:22:380
25827994833,0cyclictest7451-21grep07:47:410
25827994833,0cyclictest7451-21grep07:47:410
25827994832,0cyclictest16541-21munin-node0
25827994831,0cyclictest8504-21df_abs07:52:320
25827994820,0cyclictest0-21swapper/009:03:040
81470,0rcu_preempt9495-21ping08:02:321
81470,0rcu_preempt3-21ksoftirqd/008:15:490
81470,0rcu_preempt19-21ksoftirqd/110:42:441
81470,0rcu_preempt19-21ksoftirqd/110:14:271
81470,0rcu_preempt19-21ksoftirqd/109:34:471
81470,0rcu_preempt19-21ksoftirqd/109:17:391
81470,0rcu_preempt19-21ksoftirqd/108:42:381
81470,0rcu_preempt19-21ksoftirqd/108:07:351
81470,0rcu_preempt0-21swapper/112:25:161
25827994732,0cyclictest25975-21apt-get07:07:280
81460,0rcu_preempt19-21ksoftirqd/108:37:341
81460,0rcu_preempt0-21swapper/110:32:021
25827994630,0cyclictest28033-21apt-get08:52:300
81450,0rcu_preempt19-21ksoftirqd/111:31:381
81450,0rcu_preempt19-21ksoftirqd/111:12:351
81450,0rcu_preempt19-21ksoftirqd/110:06:561
81440,0rcu_preempt0-21swapper/111:09:391
81440,0rcu_preempt0-21swapper/109:54:051
81430,0rcu_preempt19-21ksoftirqd/107:18:001
25827994328,0cyclictest24753-21apt-get08:42:290
81420,0rcu_preempt20516-21kworker/1:008:52:291
81420,0rcu_preempt19-21ksoftirqd/107:12:331
81420,0rcu_preempt19-21ksoftirqd/107:12:331
81400,0rcu_preempt19-21ksoftirqd/107:54:501
244352400,0chrt24356-1kworker/1:2H07:02:301
244352400,0chrt24356-1kworker/1:2H07:02:301
81390,0rcu_preempt19-21ksoftirqd/108:57:411
81390,0rcu_preempt19-21ksoftirqd/108:32:301
81380,0rcu_preempt19-21ksoftirqd/108:18:091
81370,0rcu_preempt19-21ksoftirqd/108:51:141
81370,0rcu_preempt19-21ksoftirqd/107:07:341
81350,0rcu_preempt19-21ksoftirqd/108:30:421
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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