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2025-11-20 - 03:33

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 Thu Nov 20, 2025 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819501400,0irq/47-4a10000012472-21kworker/u2:019:06:170
236519910582,0cyclictest17638-21apt-get23:45:300
236519910575,0cyclictest4745-21seq22:07:570
236519910572,0cyclictest26008-21ssh21:44:060
236519910483,0cyclictest12101-21ssh21:14:560
236519910476,0cyclictest12271-21ssh23:33:290
236519910381,0cyclictest15318-21sshd21:21:310
236519910381,0cyclictest13114-21ssh22:25:450
236519910363,0cyclictest3040-21ssh00:22:350
236519910282,0cyclictest2471-21ssh22:03:050
236519910281,0cyclictest23107-21ssh23:56:270
236519910280,0cyclictest8509-21ssh22:15:570
236519910280,0cyclictest25490-21ssh22:52:180
236519910277,0cyclictest29706-21ssh21:51:550
236519910269,0cyclictest29400-21ssh23:00:340
236519910178,0cyclictest7317-21sshd00:31:370
236519910170,0cyclictest28642-21ssh22:59:100
236519910168,0cyclictest7168-21ssh22:13:110
236519910082,0cyclictest31695-21ssh21:56:090
236519910081,0cyclictest29154-21munin-run19:44:530
236519910081,0cyclictest13069-21ssh21:16:530
236519910079,0cyclictest32632-21ssh23:07:360
236519910069,0cyclictest6761-21ssh23:21:350
236519910068,0cyclictest22179-21ssh21:36:000
236519910067,0cyclictest8661-21ssh23:25:380
236519910063,0cyclictest26778-21runrttasks19:28:220
23651999980,0cyclictest18130-21ssh21:27:310
23651999979,0cyclictest27553-21ssh00:05:490
23651999978,0cyclictest23126-21ssh22:47:150
23651999975,0cyclictest18305-21ssh22:36:550
23651999969,0cyclictest29665-21seq00:10:190
23651999967,0cyclictest26630-21ssh21:45:150
23651999876,0cyclictest5555-21ssh23:19:110
23651999876,0cyclictest22038-21ssh23:54:180
23651999866,0cyclictest9626-21ssh00:36:300
23651999866,0cyclictest24998-21ssh00:00:220
23651999866,0cyclictest14318-21ssh23:37:510
23651999779,0cyclictest4475-21sshd20:35:300
23651999778,0cyclictest17128-21ssh23:43:540
23651999778,0cyclictest10609-21ssh22:20:210
23651999776,0cyclictest24519-21cat19:14:540
23651999776,0cyclictest20075-21ssh22:40:360
23651999775,0cyclictest31771-21apt-get00:15:490
23651999677,0cyclictest2082-21munin-run20:19:550
23651999676,0cyclictest19665-21ssh21:30:410
23651999675,0cyclictest8229-21sendmail-msp20:59:550
23651999674,0cyclictest17147-21ssh22:34:330
23651999673,0cyclictest32303-21munin-run20:04:540
23651999664,0cyclictest3635-21latency_hist23:15:010
23651999579,0cyclictest31556-21munin-run19:59:530
23651999577,0cyclictest29258-21latency_hist19:44:570
23651999573,0cyclictest5484-21ssh00:27:470
23651999570,0cyclictest24565-21munin-node19:14:560
23651999567,0cyclictest30857-21latency_hist19:54:540
23651999476,0cyclictest32406-21modprobe20:04:540
23651999466,0cyclictest3010-21seq20:25:300
23651999375,0cyclictest6533-21munin-run20:49:550
23651999275,0cyclictest7507-21latency_hist20:54:550
23651999272,0cyclictest722-21seq20:10:120
23651999270,0cyclictest5804-21modprobe20:44:540
23651999174,0cyclictest27671-21cron19:34:510
23651999173,0cyclictest9742-21cat21:09:570
23651999170,0cyclictest28441-21sendmail-msp19:39:530
23651999073,0cyclictest26256-21munin-run19:24:510
23651999065,0cyclictest15184-21lldpd20:20:060
23651998969,0cyclictest8724-21runrttasks21:03:090
23651998873,0cyclictest3670-21cat20:29:550
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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