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2026-04-19 - 10:20

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 Sun Apr 19, 2026 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819501770,0irq/46-4a1000005249-21kworker/0:119:08:160
55479910077,0cyclictest5966-21ssh23:57:100
5547999979,0cyclictest2458-21apt-get23:50:540
5547999877,0cyclictest593-21sshd23:45:550
5547999859,0cyclictest20889-21ssh22:10:530
5547999673,0cyclictest26877-21ssh21:15:270
5547999656,0cyclictest24191-21diskmemload22:23:110
5547999573,0cyclictest6613-21ntpq19:15:150
5547999567,0cyclictest19615-21ssh22:08:250
5547999562,0cyclictest29057-21ssh22:28:270
5547999475,0cyclictest26518-21ssh23:32:010
5547999472,0cyclictest16101-21ssh23:09:560
5547999470,0cyclictest22040-21apt-get00:30:520
5547999465,0cyclictest1482-21ssh21:30:120
5547999464,0cyclictest18563-21ssh23:15:040
5547999458,0cyclictest12659-21apt19:55:010
5547999456,0cyclictest14282-21ssh00:14:470
5547999372,0cyclictest6342-21ssh22:49:130
5547999364,0cyclictest7652-21kworker/u2:422:52:030
5547999355,0cyclictest7961-21ssh21:43:570
5547999274,0cyclictest24845-21ssh22:19:320
5547999271,0cyclictest24860-21rm00:36:570
5547999271,0cyclictest19540-21munin-run20:40:040
5547999269,0cyclictest25455-21ssh23:29:540
5547999260,0cyclictest15442-21ssh21:59:440
5547999255,0cyclictest18150-21kworker/u2:520:35:020
5547999173,0cyclictest6405-21munin-node19:15:050
5547999172,0cyclictest28699-21ssh23:36:400
5547999169,0cyclictest31336-21ssh23:42:180
5547999162,0cyclictest14704-21apt-config00:15:150
5547999158,0cyclictest10546-21ssh00:06:470
5547999156,0cyclictest13417-21runrttasks23:04:090
5547999073,0cyclictest524-21ssh22:36:460
5547999072,0cyclictest18186-21ssh23:14:220
5547999071,0cyclictest31873-21ssh22:34:320
5547999071,0cyclictest29975-21ssh21:21:580
5547999071,0cyclictest12856-21ssh21:54:160
5547999070,0cyclictest24505-21ssh21:10:290
5547999069,0cyclictest3643-21ssh22:43:250
5547999067,0cyclictest22964-21ssh23:24:320
5547999065,0cyclictest9652-21cron19:35:010
5547999065,0cyclictest1155-21ssh21:29:440
5547999051,0cyclictest21564-21kworker/u2:321:00:020
5547998969,0cyclictest21507-21munin-run00:30:020
5547998960,0cyclictest8621-21ssh00:02:460
5547998957,0cyclictest17195-21rm22:03:190
5547998871,0cyclictest13407-21munin-run20:00:020
5547998870,0cyclictest19652-21cat20:40:080
5547998870,0cyclictest15629-21munin-run20:15:010
5547998867,0cyclictest9900-21ssh22:56:350
5547998856,0cyclictest9105-21kworker/u2:021:48:250
5547998854,0cyclictest4052-21ssh21:35:370
5547998852,0cyclictest23711-21kworker/u2:221:10:010
5547998768,0cyclictest16380-21munin-run20:20:010
5547998667,0cyclictest21223-21munin-run20:50:020
5547998667,0cyclictest17410-21ssh00:21:070
5547998667,0cyclictest14161-21awk20:05:010
5547998566,0cyclictest11170-21munin-run19:45:010
5547998562,0cyclictest8411-21sshd19:25:560
5547998467,0cyclictest17600-21runrttasks20:27:580
5547998464,0cyclictest23298-21sshd21:03:560
5547998464,0cyclictest10419-21awk19:40:020
5547998462,0cyclictest11918-21munin-run19:50:020
5547998459,0cyclictest7797-21sshd19:21:550
5547998367,0cyclictest14891-21apt20:10:010
5547998365,0cyclictest21959-21munin-run20:55:020
5547998365,0cyclictest16857-21sshd20:22:550
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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