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2025-10-23 - 18:08

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 Thu Oct 23, 2025 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819501750,0irq/47-4a10000010720-21kworker/u2:107:09:290
11154998772,0cyclictest10237-21ssh10:45:220
11154998466,0cyclictest31946-21seq11:31:530
11154998164,0cyclictest25757-21rm11:18:480
11154997964,0cyclictest28665-21seq12:33:460
11154997964,0cyclictest26049-21apt-get08:45:150
11154997963,0cyclictest7344-21ssh10:39:230
11154997863,0cyclictest18478-21ssh12:12:030
11154997862,0cyclictest8133-21sh09:32:120
11154997762,0cyclictest28417-21seq11:24:310
11154997760,0cyclictest11200-21ssh09:38:450
11154997658,0cyclictest15201-21runrttasks08:12:500
11154997559,0cyclictest3663-21runrttasks10:31:190
11154997050,0cyclictest0-21swapper10:11:380
11154997050,0cyclictest0-21swapper09:25:010
11154996949,0cyclictest0-21swapper10:23:320
11154996850,0cyclictest0-21swapper09:22:240
11154996849,0cyclictest0-21swapper12:18:570
11154996849,0cyclictest0-21swapper11:47:280
11154996849,0cyclictest0-21swapper10:40:360
11154996750,0cyclictest0-21swapper12:04:460
11154996648,0cyclictest0-21swapper12:36:570
11154996648,0cyclictest0-21swapper09:44:020
11154996647,0cyclictest0-21swapper11:39:050
11154996646,0cyclictest0-21swapper12:08:120
11154996553,0cyclictest17216-21ssh11:00:180
11154996548,0cyclictest0-21swapper11:43:540
11154996547,0cyclictest0-21swapper11:56:210
11154996547,0cyclictest0-21swapper09:16:230
11154996546,0cyclictest0-21swapper11:13:080
11154996344,0cyclictest0-21swapper10:56:420
11154996251,0cyclictest81850irq/46-4a10000012:30:030
11154996251,0cyclictest81850irq/46-4a10000009:45:000
11154996244,0cyclictest0-21swapper12:21:150
11154996150,0cyclictest31713-21ssh09:13:360
11154996140,0cyclictest0-21swapper10:15:530
11154995745,0cyclictest81850irq/46-4a10000010:51:330
11154995740,0cyclictest0-21swapper10:08:230
11154995731,0cyclictest17069-21ssh09:50:580
11154995730,0cyclictest13240-21sendmail07:19:510
11154995647,0cyclictest81850irq/46-4a10000011:30:020
11154995645,0cyclictest81850irq/46-4a10000007:49:510
11154995639,0cyclictest0-21swapper09:57:190
11154995637,0cyclictest81850irq/46-4a10000008:44:550
11154995543,0cyclictest81850irq/46-4a10000010:03:140
11154995543,0cyclictest81850irq/46-4a10000007:54:520
11154995530,0cyclictest1552-21ssh10:26:470
11154995528,0cyclictest23613-21cron08:29:530
11154995444,0cyclictest81850irq/46-4a10000011:07:400
11154995436,0cyclictest0-21swapper11:54:370
11154995223,0cyclictest23781-21runrttasks08:30:150
11154995127,0cyclictest29199-21cron09:04:540
11154995039,0cyclictest81850irq/46-4a10000007:14:540
11154995033,0cyclictest19492-21runrttasks08:01:250
11154995032,0cyclictest24363-21apt-get08:35:310
11154995026,0cyclictest81950irq/47-4a10000009:09:540
11154995012,0cyclictest18928-21sshd07:58:030
11154994938,0cyclictest101ktimersoftd/007:21:550
11154994934,0cyclictest21531-21sshd08:15:070
11154994931,0cyclictest27356-21runrttasks08:52:080
11154994925,0cyclictest0-21swapper07:44:530
11154994838,0cyclictest81850irq/46-4a10000008:54:590
11154994838,0cyclictest101ktimersoftd/007:32:160
11154994735,0cyclictest81850irq/46-4a10000007:25:030
11154994732,0cyclictest15824-21runrttasks07:36:500
11154994732,0cyclictest11152-21cyclictest08:22:040
11154994721,0cyclictest19437-21kworker/u2:508:09:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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