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2026-06-23 - 15:33

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #8

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: 50 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 rack9slot8s.osadl.org (updated Tue Jun 23, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
351501860,0irq/20-4900000011161-21kworker/0:107:08:300
81950700,0irq/46-4a10000023707-21apt-get08:10:370
101700,0ktimersoftd/020548-21sshd07:48:370
81950690,0irq/46-4a1000000-21swapper10:29:070
82050680,0irq/47-4a10000023069-21kworker/u2:211:45:000
81950680,0irq/46-4a1000000-21swapper09:32:380
101680,0ktimersoftd/030534-21seq12:28:410
101680,0ktimersoftd/021553-21seq11:29:430
101680,0ktimersoftd/021320-21runrttasks07:53:540
101680,0ktimersoftd/016972-21seq07:24:400
101680,0ktimersoftd/012086-21snmpd08:52:090
101680,0ktimersoftd/010363-21sed10:15:120
81950670,0irq/46-4a1000000-21swapper12:20:030
81950670,0irq/46-4a1000000-21swapper10:30:030
101670,0ktimersoftd/025191-21chrt11:52:370
101670,0ktimersoftd/024370-21chrt11:46:520
82050660,0irq/47-4a10000012756-1kworker/u3:110:46:370
81950660,0irq/46-4a1000000-21swapper09:09:510
81950660,0irq/46-4a1000000-21swapper07:19:370
101660,0ktimersoftd/020494-21runrttasks11:22:040
101660,0ktimersoftd/012113-21runrttasks11:17:290
81950650,0irq/46-4a10000012756-1kworker/u3:110:40:210
101650,0ktimersoftd/022788-21runrttasks11:37:470
101650,0ktimersoftd/012086-21snmpd07:56:460
82050640,0irq/47-4a10000024085-1kworker/u3:608:16:060
81950640,0irq/46-4a1000002959-21kworker/u2:109:41:040
81950640,0irq/46-4a10000011320-21kworker/u2:910:22:030
101640,0ktimersoftd/023329-21chrt08:07:030
101640,0ktimersoftd/01-21systemd07:26:350
82050630,0irq/47-4a10000011699-21cron11:10:010
81950620,0irq/46-4a1000000-21swapper07:14:250
101620,0ktimersoftd/07535-21runrttasks09:57:530
101620,0ktimersoftd/032033-21runrttasks09:04:440
101620,0ktimersoftd/028691-1kworker/u3:308:44:380
101620,0ktimersoftd/025773-21runrttasks11:56:200
82050610,0irq/47-4a10000012086-21snmpd10:52:380
81950610,0irq/46-4a100000101ktimersoftd/010:15:030
14197996149,0cyclictest81950irq/46-4a10000009:55:030
14197996131,0cyclictest0-21swapper07:39:310
81950600,0irq/46-4a1000000-21swapper11:05:030
14197996030,0cyclictest0-21swapper09:14:510
101600,0ktimersoftd/027163-21kworker/u2:108:36:380
14197995949,0cyclictest81950irq/46-4a10000012:40:000
14197995948,0cyclictest81950irq/46-4a10000008:35:010
14197995947,0cyclictest81950irq/46-4a10000009:20:020
14197995931,0cyclictest0-21swapper07:44:320
101590,0ktimersoftd/012113-21runrttasks12:20:250
101590,0ktimersoftd/012113-21runrttasks11:13:130
101580,0ktimersoftd/012113-21runrttasks08:28:240
101580,0ktimersoftd/012086-21snmpd09:35:370
14197995746,0cyclictest81950irq/46-4a10000012:15:010
14197995746,0cyclictest81950irq/46-4a10000011:00:020
101570,0ktimersoftd/012113-21runrttasks12:04:570
14197995538,0cyclictest26201-21latency_hist08:25:030
14197995442,0cyclictest81950irq/46-4a10000010:10:010
14197995342,0cyclictest81950irq/46-4a10000007:31:380
101530,0ktimersoftd/00-21swapper12:30:160
101530,0ktimersoftd/00-21swapper09:21:520
101530,0ktimersoftd/00-21swapper08:01:130
94750520,0irq/33-mmc04413-1kworker/0:2H08:48:210
14197995232,0cyclictest13947-21cron10:40:000
14197995140,0cyclictest81950irq/46-4a10000012:05:230
14197995124,0cyclictest1950-21sshd08:58:220
14197995039,0cyclictest81950irq/46-4a10000009:45:550
14197995033,0cyclictest8614-21latency_hist10:05:020
14197994927,0cyclictest0-21swapper09:25:130
14197994834,0cyclictest12113-21runrttasks11:32:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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