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2025-11-25 - 02:55

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 792 highest latencies:
System rack9slot8s.osadl.org (updated Tue Nov 25, 2025 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819501870,0irq/47-4a10000017292-21seq19:08:200
175259912253,0cyclictest81850irq/46-4a10000021:19:280
81850830,0irq/46-4a100000856-21seq22:12:570
81850820,0irq/46-4a1000002075-21runrttasks00:33:440
81850810,0irq/46-4a10000015064-21seq22:43:000
81850790,0irq/46-4a10000022257-21ssh00:07:270
81850780,0irq/46-4a10000025411-21ssh21:56:070
81850780,0irq/46-4a10000016276-21ssh23:54:550
81850770,0irq/46-4a10000029703-21ssh23:14:130
81850770,0irq/46-4a10000024011-21ssh00:11:090
81850760,0irq/46-4a10000031537-21ssh23:18:050
81850750,0irq/46-4a10000027292-21ssh22:00:040
81850730,0irq/46-4a1000006146-21ssh23:33:110
81850730,0irq/46-4a1000004229-21latency_hist22:20:010
81850730,0irq/46-4a10000030054-21kworker/u2:423:26:000
81850730,0irq/46-4a10000029886-21ssh00:23:490
81850730,0irq/46-4a10000017204-21ssh22:47:310
81850730,0irq/46-4a10000013421-21ssh21:30:350
81850720,0irq/46-4a100000608-21kworker/u2:421:49:570
81850720,0irq/46-4a10000024288-21ssh21:54:000
81850720,0irq/46-4a10000023057-21sh22:59:580
81850720,0irq/46-4a10000011388-21chrt21:26:140
81850720,0irq/46-4a10000011043-21runrttasks23:43:400
81950710,0irq/47-4a10000016325-21apt-get23:55:170
81850710,0irq/46-4a100000608-21kworker/u2:421:10:430
81850710,0irq/46-4a1000004076-21ssh00:38:010
81850700,0irq/46-4a10000032650-21kworker/u2:322:54:340
81850700,0irq/46-4a10000019731-21kworker/u2:219:24:520
81850700,0irq/46-4a1000001790-21apt-get21:00:200
81850700,0irq/46-4a10000014917-21kworker/u2:100:29:050
81850690,0irq/46-4a1000009285-21ssh23:39:590
81850690,0irq/46-4a1000004091-21kworker/u2:221:21:260
81850680,0irq/46-4a1000005045-21kworker/u2:722:39:280
81850680,0irq/46-4a1000004653-21kworker/u2:223:50:020
81850680,0irq/46-4a10000011453-21kworker/u2:321:35:180
81850670,0irq/46-4a100000560-21kswapd022:05:410
81850660,0irq/46-4a1000004091-21kworker/u2:221:42:090
81850660,0irq/46-4a10000014917-21kworker/u2:100:18:320
81850660,0irq/46-4a10000014700-21kworker/u2:523:03:240
81850650,0irq/46-4a1000005045-21kworker/u2:722:21:510
81850640,0irq/46-4a10000026313-21kworker/u2:123:07:310
81850640,0irq/46-4a10000017523-21cyclictest22:30:410
81850640,0irq/46-4a10000017523-21cyclictest20:16:430
81850640,0irq/46-4a1000000-21swapper00:01:320
81850620,0irq/46-4a10000028594-21sshd20:21:140
101610,0ktimersoftd/06978-21ssh22:25:490
81850600,0irq/46-4a10000028675-1kworker/u3:220:25:560
81850590,0irq/46-4a1000000-21swapper23:20:300
17525995644,0cyclictest81850irq/46-4a10000021:09:570
17525995437,0cyclictest23900-21latency_hist19:49:520
17525995342,0cyclictest81850irq/46-4a10000020:59:550
17525995341,0cyclictest81850irq/46-4a10000019:52:130
17525995336,0cyclictest26559-21runrttasks20:07:500
17525995323,0cyclictest15184-21lldpd20:45:540
17525995241,0cyclictest81850irq/46-4a10000019:15:030
17525995235,0cyclictest32079-21latency_hist20:44:550
17525995041,0cyclictest101ktimersoftd/020:14:060
17525994939,0cyclictest101ktimersoftd/020:51:390
17525994937,0cyclictest81850irq/46-4a10000020:39:540
17525994922,0cyclictest20311-21runrttasks19:25:100
17525994920,0cyclictest22524-21runrttasks19:40:020
17525994829,0cyclictest22384-21munin-run19:39:530
17525994732,0cyclictest30179-21sshd20:32:090
17525994732,0cyclictest25190-21runrttasks19:58:510
17525994730,0cyclictest21419-21sshd19:33:110
17525994531,0cyclictest24583-21kworker/u2:020:04:530
17525994527,0cyclictest17821-21sshd19:11:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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