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2025-12-10 - 00:21

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 Tue Dec 09, 2025 12:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819509810,0irq/47-4a10000010077-1kworker/u3:107:05:130
114539911746,0cyclictest81850irq/46-4a10000009:39:570
114539911230,0cyclictest1179-21ssh11:34:420
114539911227,0cyclictest1023-21ssh10:25:020
114539911128,0cyclictest28283-21dpkg08:55:030
114539911127,0cyclictest24110-21cron08:29:530
114539911126,0cyclictest12572-21df_inode07:15:030
114539911111,0cyclictest29711-21/usr/sbin/munin09:04:550
11453991108,0cyclictest31239-21ssh12:38:110
114539911030,0cyclictest18590-21seq07:53:490
114539911030,0cyclictest16854-21apt-get09:50:130
114539911025,0cyclictest13700-21sh12:01:000
114539911011,0cyclictest31146-21ssh09:11:140
114539910943,0cyclictest81850irq/46-4a10000009:44:390
114539910928,0cyclictest28541-21ssh10:14:450
114539910926,0cyclictest25209-21kworker/u2:408:39:550
114539910925,0cyclictest28537-21ssh11:23:490
114539910924,0cyclictest3682-21munin-run11:40:000
114539910923,0cyclictest22359-21ssh10:01:220
114539910912,0cyclictest18314-21ssh11:01:540
114539910840,0cyclictest81850irq/46-4a10000009:33:350
114539910830,0cyclictest15629-21ssh09:47:120
114539910829,0cyclictest10906-21apt-key11:55:080
114539910828,0cyclictest20097-21sshd08:02:220
114539910826,0cyclictest30387-21ssh10:18:380
114539910825,0cyclictest23154-21runrttasks08:23:060
11453991077,0cyclictest5811-21ssh09:26:100
11453991077,0cyclictest26798-21ssh12:28:490
11453991077,0cyclictest15752-21ssh12:05:180
114539910728,0cyclictest31238-21ssh10:20:140
114539910727,0cyclictest19733-21ssh09:55:460
114539910723,0cyclictest17807-21latency_hist07:49:520
114539910723,0cyclictest14858-21sshd07:23:210
114539910710,0cyclictest16199-21ssh10:57:270
114539910646,0cyclictest81850irq/46-4a10000011:14:110
114539910624,0cyclictest4494-21ssh11:41:330
114539910624,0cyclictest21353-21ssh12:17:140
114539910622,0cyclictest19358-21rm12:13:030
114539910612,0cyclictest640-21dpkg09:15:110
114539910538,0cyclictest81850irq/46-4a10000010:38:520
114539910535,0cyclictest31176-21rm11:29:290
114539910529,0cyclictest2818-21latency_hist09:20:000
114539910529,0cyclictest12300-21wc07:14:540
114539910527,0cyclictest21949-21ssh11:09:490
114539910522,0cyclictest12934-21ssh10:50:250
114539910512,0cyclictest14029-21kworker/u2:1112:23:430
114539910510,0cyclictest8633-21ssh10:41:180
114539910432,0cyclictest14182-21latency_hist07:24:530
114539910430,0cyclictest7030-21ssh11:47:010
114539910428,0cyclictest27351-21latency_hist12:30:040
114539910412,0cyclictest29991-21sshd09:06:240
114539910326,0cyclictest22306-21sshd08:17:220
114539910323,0cyclictest9977-21ssh11:53:230
114539910323,0cyclictest24666-21ssh11:15:250
114539910316,0cyclictest28016-21apt-get08:54:550
114539910312,0cyclictest11045-21ssh10:46:270
114539910222,0cyclictest19400-21seq07:57:520
114539910211,0cyclictest25183-21sshd10:07:260
114539910117,0cyclictest4786-21ssh10:33:120
114539910112,0cyclictest15128-21sshd07:31:200
114539910018,0cyclictest26344-21sshd08:43:230
11453999927,0cyclictest24605-21seq08:32:580
11453999912,0cyclictest21158-21munin-run08:09:550
11453999812,0cyclictest21564-21sshd08:12:230
11453999612,0cyclictest27285-21munin-run08:49:550
11453999612,0cyclictest16017-21seq07:37:370
11453999522,0cyclictest15184-21lldpd07:40:580
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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