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2026-04-07 - 12:13

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 792 highest latencies:
System rackaslot5s.osadl.org (updated Tue Apr 07, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811240,0rcu_preempt19-21ksoftirqd/120:53:511
811240,0rcu_preempt19-21ksoftirqd/119:23:541
811220,0rcu_preempt19-21ksoftirqd/119:38:551
811170,0rcu_preempt3-21ksoftirqd/021:40:100
811170,0rcu_preempt19-21ksoftirqd/121:04:021
811160,0rcu_preempt13806-21ping20:24:051
811130,0rcu_preempt19-21ksoftirqd/123:48:511
811110,0rcu_preempt19-21ksoftirqd/119:33:541
811090,0rcu_preempt19-21ksoftirqd/123:09:041
811080,0rcu_preempt3-21ksoftirqd/021:22:390
811040,0rcu_preempt3-21ksoftirqd/022:45:280
811030,0rcu_preempt19-21ksoftirqd/119:43:521
811030,0rcu_preempt19-21ksoftirqd/100:18:511
811000,0rcu_preempt19-21ksoftirqd/100:09:011
81980,0rcu_preempt19-21ksoftirqd/123:43:501
81930,0rcu_preempt19-21ksoftirqd/122:13:541
81890,0rcu_preempt19-21ksoftirqd/123:34:051
81890,0rcu_preempt19-21ksoftirqd/122:33:531
81860,0rcu_preempt19-21ksoftirqd/123:39:041
81860,0rcu_preempt19-21ksoftirqd/121:43:551
81850,0rcu_preempt19-21ksoftirqd/123:54:041
81850,0rcu_preempt19-21ksoftirqd/122:48:111
81840,0rcu_preempt3-21ksoftirqd/000:03:580
81810,0rcu_preempt19-21ksoftirqd/122:38:391
81800,0rcu_preempt19-21ksoftirqd/122:03:521
81790,0rcu_preempt19-21ksoftirqd/121:48:571
81780,0rcu_preempt0-21swapper/122:13:381
81770,0rcu_preempt3-21ksoftirqd/023:21:460
81770,0rcu_preempt19-21ksoftirqd/122:18:591
81770,0rcu_preempt19-21ksoftirqd/121:18:191
81760,0rcu_preempt19-21ksoftirqd/121:59:021
81760,0rcu_preempt19-21ksoftirqd/121:23:531
81750,0rcu_preempt19-21ksoftirqd/123:32:501
81750,0rcu_preempt19-21ksoftirqd/120:34:021
81730,0rcu_preempt3-21ksoftirqd/019:24:120
81730,0rcu_preempt19-21ksoftirqd/122:24:241
81730,0rcu_preempt19-21ksoftirqd/119:23:391
81720,0rcu_preempt19-21ksoftirqd/123:23:541
81720,0rcu_preempt19-21ksoftirqd/123:08:021
81710,0rcu_preempt19-21ksoftirqd/122:49:021
81710,0rcu_preempt19-21ksoftirqd/119:58:511
81710,0rcu_preempt15107-21dropbear21:18:561
81700,0rcu_preempt19-21ksoftirqd/100:31:281
10050700,0irq/346-48484009678-1kworker/0:1H22:06:430
81690,0rcu_preempt19-21ksoftirqd/122:59:041
81690,0rcu_preempt19-21ksoftirqd/120:43:511
81690,0rcu_preempt19-21ksoftirqd/119:13:531
81680,0rcu_preempt19-21ksoftirqd/122:54:031
81670,0rcu_preempt19-21ksoftirqd/123:19:041
81670,0rcu_preempt19-21ksoftirqd/121:55:371
81670,0rcu_preempt19-21ksoftirqd/119:28:551
81670,0rcu_preempt19-21ksoftirqd/100:28:151
81670,0rcu_preempt19-21ksoftirqd/100:04:441
81660,0rcu_preempt19-21ksoftirqd/121:34:251
81660,0rcu_preempt19-21ksoftirqd/121:08:521
81660,0rcu_preempt19-21ksoftirqd/119:53:561
81660,0rcu_preempt19-21ksoftirqd/119:53:561
81650,0rcu_preempt19-21ksoftirqd/120:58:521
81650,0rcu_preempt19-21ksoftirqd/100:36:161
81640,0rcu_preempt19-21ksoftirqd/122:33:091
81630,0rcu_preempt19-21ksoftirqd/123:59:351
81630,0rcu_preempt19-21ksoftirqd/119:09:021
81620,0rcu_preempt19-21ksoftirqd/121:38:561
81610,0rcu_preempt19-21ksoftirqd/123:18:021
81610,0rcu_preempt19-21ksoftirqd/100:15:161
30095996019,0cyclictest29512-21munin-node0
81590,0rcu_preempt19-21ksoftirqd/121:31:431
81580,0rcu_preempt30402-1kworker/0:3H23:49:530
81570,0rcu_preempt3-21ksoftirqd/023:30:590
81570,0rcu_preempt27379-21apt-get20:38:481
81570,0rcu_preempt19094-21ssh22:28:510
81560,0rcu_preempt19-21ksoftirqd/120:49:051
81560,0rcu_preempt13806-21ping20:03:531
81560,0rcu_preempt13368-1kworker/0:1H22:56:440
81550,0rcu_preempt7783-21ssh23:55:150
81550,0rcu_preempt19-21ksoftirqd/120:09:061
30095995514,0cyclictest3526-1kworker/0:1H22:49:040
30095995513,0cyclictest19548-1kworker/0:0H21:59:590
30095995512,0cyclictest30984-1kworker/0:3H22:43:020
81540,0rcu_preempt32535-1kworker/0:3H00:24:000
81540,0rcu_preempt3-21ksoftirqd/023:40:170
30095995415,0cyclictest0-21swapper/000:14:360
30095995413,0cyclictest9678-1kworker/0:1H21:54:350
81530,0rcu_preempt3-21ksoftirqd/023:04:000
81530,0rcu_preempt3-21ksoftirqd/019:58:490
30095995316,0cyclictest12470-1kworker/0:1H21:25:340
30095995313,0cyclictest9678-1kworker/0:1H21:48:550
30095995311,0cyclictest20509-1kworker/0:2H23:38:330
81520,0rcu_preempt54-21kswapd000:10:060
81520,0rcu_preempt3-21ksoftirqd/020:38:530
81520,0rcu_preempt19-21ksoftirqd/120:28:551
30095995218,0cyclictest23286-1kworker/0:0H23:11:040
30095995217,0cyclictest6942-1kworker/0:3H22:34:210
30095995214,0cyclictest11008-21ssh22:19:520
30095995213,0cyclictest31750-1kworker/0:0H22:13:310
30095995212,0cyclictest9978-1kworker/0:2H00:35:020
30095995212,0cyclictest30984-1kworker/0:3H23:01:020
30095995212,0cyclictest12470-1kworker/0:1H21:17:360
95972510,0chrt9950irq/345-484840021:13:380
81510,0rcu_preempt3-21ksoftirqd/020:49:280
81510,0rcu_preempt19-21ksoftirqd/120:20:591
81510,0rcu_preempt19-21ksoftirqd/120:16:281
30095995119,0cyclictest13368-1kworker/0:1H23:15:450
30095995118,0cyclictest13368-1kworker/0:1H23:24:220
81500,0rcu_preempt3-21ksoftirqd/021:29:050
81500,0rcu_preempt19519-21kworker/0:019:43:510
81500,0rcu_preempt19519-21kworker/0:019:13:560
81490,0rcu_preempt29495-21ssh23:44:070
81490,0rcu_preempt28587-21apt-get19:03:500
81490,0rcu_preempt28587-21apt-get19:03:500
81480,0rcu_preempt3-21ksoftirqd/020:25:250
81480,0rcu_preempt3-21ksoftirqd/020:18:500
81480,0rcu_preempt3-21ksoftirqd/019:49:250
30095994817,0cyclictest7052-21ssh22:16:130
30095994816,0cyclictest31343-21munin-node0
30095994813,0cyclictest22337-1kworker/0:2H21:44:500
30095994813,0cyclictest16862-1kworker/0:0H22:27:420
81470,0rcu_preempt3-21ksoftirqd/020:09:070
81470,0rcu_preempt3-21ksoftirqd/019:57:090
81470,0rcu_preempt3-21ksoftirqd/019:57:090
81460,0rcu_preempt3-21ksoftirqd/020:17:180
81460,0rcu_preempt3-21ksoftirqd/020:04:040
81460,0rcu_preempt3-21ksoftirqd/000:28:470
30095994613,0cyclictest10352-1kworker/0:1H23:59:080
81450,0rcu_preempt30421-21df_abs19:08:510
3009599457,0cyclictest26933-1kworker/0:1H20:35:480
81440,0rcu_preempt19-21ksoftirqd/119:52:401
30095994414,0cyclictest29247-21fschecks_count20:43:550
3009599436,0cyclictest0-21swapper/019:33:380
81420,0rcu_preempt30756-21kworker/0:221:03:060
3009599422,0cyclictest936-21ping19:33:530
81410,0rcu_preempt3-21ksoftirqd/020:31:380
81400,0rcu_preempt3-21ksoftirqd/020:53:490
81400,0rcu_preempt19-21ksoftirqd/119:04:021
81400,0rcu_preempt19-21ksoftirqd/119:04:021
3009599407,0cyclictest3766-21meminfo21:04:010
30095993930,0cyclictest936-21ping19:38:490
30095993917,0cyclictest936-21ping19:18:500
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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