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2025-12-11 - 21:50

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 highest latencies:
System rack9slot8s.osadl.org (updated Thu Dec 11, 2025 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819501910,0irq/47-4a1000001005-21sshd07:08:180
81950870,0irq/47-4a1000004939-21munin-run12:05:000
81950870,0irq/47-4a10000011684-21sshd12:19:290
81850850,0irq/46-4a10000031222-21ssh10:42:590
85802848,0sleep08595-21ssh09:54:560
81850840,0irq/46-4a1000009490-21ssh11:05:240
81850840,0irq/46-4a10000028341-21sshd11:45:280
81850830,0irq/46-4a10000022575-21seq10:24:360
81950820,0irq/47-4a10000015184-21lldpd11:21:210
81850820,0irq/46-4a1000007839-21ssh11:01:590
81850820,0irq/46-4a10000019304-21ssh10:17:350
81950810,0irq/47-4a1000002619-21sendmail-msp12:00:010
81850810,0irq/46-4a1000006860-21kworker/u2:009:59:560
81950800,0irq/47-4a1000009039-21rm12:13:470
81950800,0irq/47-4a100000414-21kworker/u2:411:10:190
81950800,0irq/47-4a10000018165-21apt08:59:540
81850800,0irq/46-4a1000003488-21ssh10:52:510
81850800,0irq/46-4a1000003482-21ssh09:43:590
81850800,0irq/46-4a10000021640-21ssh09:14:030
81850800,0irq/46-4a10000021215-21ssh11:30:110
81950790,0irq/47-4a1000004593-21ssh10:55:030
81950790,0irq/47-4a10000030486-21kworker/u2:310:45:010
81950790,0irq/47-4a10000019669-21awk09:09:550
81850790,0irq/46-4a10000026829-21runrttasks09:24:550
81850790,0irq/46-4a10000019844-21ssh11:27:220
81850790,0irq/46-4a10000015874-21ssh10:10:080
81850790,0irq/46-4a10000012619-21ssh12:21:180
144212790,0sleep08317-21kworker/u2:408:34:470
81950780,0irq/47-4a10000016108-21ssh12:28:520
81950780,0irq/47-4a10000011450-21ssh10:00:360
81950780,0irq/47-4a10000011325-21apt-key08:14:580
81850780,0irq/46-4a10000025699-21sendmail11:40:000
81850780,0irq/46-4a10000015241-21ssh10:08:570
81950770,0irq/47-4a1000009826-21/usr/sbin/munin08:04:540
81950770,0irq/47-4a1000009069-21apt07:59:530
81950770,0irq/47-4a1000002553-21kworker/u2:509:45:240
81950770,0irq/47-4a10000017786-21ssh12:32:240
81950770,0irq/47-4a10000013108-21runrttasks08:25:020
81950770,0irq/47-4a10000012121-21kworker/u2:111:18:330
81850770,0irq/46-4a1000006173-21ssh12:07:340
81850770,0irq/46-4a10000028942-21ssh09:29:250
81850770,0irq/46-4a10000026369-21ssh11:41:160
81850770,0irq/46-4a10000020686-21ssh12:38:400
42622770,0chrt4227-21kworker/u2:307:26:540
280762770,0chrt28062-21kworker/u2:210:36:120
162022770,0chrt14448-21kworker/u2:508:46:020
81950760,0irq/47-4a10000022753-21kworker/u2:109:17:290
81950760,0irq/47-4a10000014901-21cron07:14:510
81950760,0irq/47-4a10000012986-21apt08:24:530
81850760,0irq/46-4a10000024324-21ssh10:28:180
157472760,0chrt14448-21kworker/u2:508:43:170
81950750,0irq/47-4a1000004924-21runrttasks07:31:210
81950750,0irq/47-4a10000031352-21kworker/u2:311:52:220
81950750,0irq/47-4a10000014581-21runrttasks08:35:060
81950740,0irq/47-4a10000022753-21kworker/u2:109:34:570
81850740,0irq/46-4a1000001057-21ssh09:39:020
77072740,0chrt7120-21kworker/u2:107:49:570
169582740,0chrt14448-21kworker/u2:508:51:140
81950730,0irq/47-4a1000003451-21runrttasks07:21:190
81950730,0irq/47-4a10000018549-21kworker/u2:609:04:550
70792730,0chrt6373-21kworker/u2:507:45:470
54842730,0sleep032453-21kworker/u2:007:34:580
81950720,0irq/47-4a1000002697-21kworker/u2:407:19:520
81950720,0irq/47-4a10000023730-21kworker/u2:010:34:590
81950720,0irq/47-4a10000015184-21lldpd08:05:280
66402720,0sleep06373-21kworker/u2:507:43:110
101700,0ktimersoftd/011350-21latency_hist08:14:560
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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