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2025-11-27 - 05:45

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 all highest latencies:
System rack9slot8s.osadl.org (updated Thu Nov 27, 2025 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
818501970,0irq/46-4a10000020726-21kworker/0:319:08:500
210619911745,0cyclictest81850irq/46-4a10000022:00:090
210619911536,0cyclictest29375-21latency_hist19:59:550
210619911449,0cyclictest81850irq/46-4a10000023:40:000
210619911332,0cyclictest81850irq/46-4a10000021:54:570
210619910930,0cyclictest7891-21sh22:19:250
210619910930,0cyclictest31652-21sh00:18:590
210619910929,0cyclictest11382-21sh22:26:430
210619910927,0cyclictest406-21sh00:21:220
210619910831,0cyclictest15201-21runrttasks21:41:100
210619910828,0cyclictest24354-21sh22:54:390
210619910828,0cyclictest19994-21ssh22:45:050
210619910828,0cyclictest13471-21diskmemload21:21:580
210619910827,0cyclictest23238-21sh00:01:000
210619910824,0cyclictest7600-21diskmemload23:08:190
210619910730,0cyclictest2017-21apt-get20:35:160
210619910727,0cyclictest9992-21sh22:23:490
210619910636,0cyclictest81850irq/46-4a10000022:37:360
210619910545,0cyclictest81850irq/46-4a10000021:31:110
210619910540,0cyclictest81850irq/46-4a10000021:29:560
210619910529,0cyclictest4018-21ssh22:10:560
210619910527,0cyclictest20531-21sh23:55:180
210619910440,0cyclictest81850irq/46-4a10000022:07:290
210619910430,0cyclictest21371-21kworker/u2:519:15:190
210619910344,0cyclictest81850irq/46-4a10000023:48:310
210619910331,0cyclictest81850irq/46-4a10000000:35:020
210619910240,0cyclictest81850irq/46-4a10000023:10:170
210619910231,0cyclictest81850irq/46-4a10000023:30:000
210619910227,0cyclictest81950irq/47-4a10000023:04:440
210619910224,0cyclictest81950irq/47-4a10000021:38:250
210619910141,0cyclictest81850irq/46-4a10000023:54:340
210619910139,0cyclictest81850irq/46-4a10000023:34:040
210619910041,0cyclictest81850irq/46-4a10000022:30:410
210619910040,0cyclictest101ktimersoftd/023:18:430
210619910035,0cyclictest101ktimersoftd/023:22:350
210619910028,0cyclictest21059-21cyclictest19:30:010
210619910028,0cyclictest14062-21ssh23:41:460
210619910026,0cyclictest4438-21munin-run00:30:010
21061999836,0cyclictest81850irq/46-4a10000022:40:170
21061999835,0cyclictest81850irq/46-4a10000022:56:070
21061999834,0cyclictest9586-21runrttasks21:13:550
21061999832,0cyclictest0-21swapper19:26:030
21061999825,0cyclictest25934-21kworker/u2:100:14:520
21061999710,0cyclictest30110-21chrt21:57:250
21061999426,0cyclictest81950irq/47-4a10000000:39:220
21061999126,0cyclictest0-21swapper00:08:240
21061998628,0cyclictest15201-21runrttasks20:40:540
81850670,0irq/46-4a100000560-21kswapd020:55:230
21061996230,0cyclictest0-21swapper21:47:270
21061996050,0cyclictest81850irq/46-4a10000020:54:570
21061996048,0cyclictest81850irq/46-4a10000020:28:040
21061996048,0cyclictest81850irq/46-4a10000019:14:550
21061995947,0cyclictest81850irq/46-4a10000021:08:400
81850570,0irq/46-4a1000000-21swapper21:18:370
81850560,0irq/46-4a1000000-21swapper19:49:580
21061995522,0cyclictest81950irq/47-4a10000020:24:540
21061995444,0cyclictest101ktimersoftd/019:59:540
21061995340,0cyclictest81850irq/46-4a10000020:34:550
101530,0ktimersoftd/00-21swapper19:40:060
21061995129,0cyclictest30427-21seq20:07:240
21061994938,0cyclictest81850irq/46-4a10000020:14:530
21061994933,0cyclictest27493-21sshd19:49:120
21061994926,0cyclictest0-21swapper21:03:070
21061994733,0cyclictest26117-21modprobe19:39:530
21061994631,0cyclictest3800-21latency_hist20:44:560
21061994631,0cyclictest23296-21sshd19:20:040
21061994429,0cyclictest31874-21sshd20:17:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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