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2026-04-25 - 16:25

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 Sat Apr 25, 2026 12:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819502030,0irq/46-4a10000030580-21kworker/0:207:08:090
82050910,0irq/47-4a10000028693-21ssh10:30:550
82050900,0irq/47-4a1000006411-21sendmail09:40:010
82050900,0irq/47-4a10000021918-21kworker/u2:009:00:070
82050890,0irq/47-4a10000022044-21latency_hist11:30:050
82050890,0irq/47-4a10000014708-21ssh12:28:030
82050880,0irq/47-4a1000004142-21ssh10:49:090
82050880,0irq/47-4a10000032713-21ssh09:25:390
82050880,0irq/47-4a10000022040-21kworker/u2:311:40:030
82050880,0irq/47-4a10000015075-21sshd08:03:090
82050870,0irq/47-4a100000848-21kworker/u2:409:49:280
82050870,0irq/47-4a100000311-21kworker/u2:312:34:560
82050870,0irq/47-4a10000021632-21munin-run10:15:010
82050870,0irq/47-4a10000012086-21snmpd11:25:360
81950870,0irq/46-4a10000023889-21dpkg09:00:020
230632877,0sleep023069-21ssh10:18:150
82050860,0irq/47-4a1000004743-21sh12:05:010
82050860,0irq/47-4a10000022394-21apt08:50:010
82050860,0irq/47-4a10000021463-21apt-get08:45:030
82050860,0irq/47-4a10000020456-21sshd08:38:080
82050860,0irq/47-4a10000016514-21ssh10:03:080
81950860,0irq/46-4a10000028125-21ssh10:29:570
81950860,0irq/46-4a10000026616-21ssh11:40:260
82050850,0irq/47-4a1000009172-21awk07:25:010
82050850,0irq/47-4a10000030123-21ssh09:20:060
82050850,0irq/47-4a10000010193-21ssh12:17:350
81950850,0irq/46-4a100000692-21ssh10:41:080
81950850,0irq/46-4a10000019037-21munin-run08:30:030
123312859,0sleep012359-21modprobe07:45:030
82050840,0irq/47-4a1000009038-21latency_hist12:15:030
82050840,0irq/47-4a10000029190-21sshd11:46:280
82050840,0irq/47-4a10000028347-21sshd09:16:080
82050840,0irq/47-4a10000018588-21rm12:37:010
82050840,0irq/47-4a10000017540-21apt08:20:010
82050840,0irq/47-4a10000013825-21munin-run07:55:010
82050840,0irq/47-4a10000012438-21ssh11:08:020
81950840,0irq/46-4a10000025552-21modprobe09:10:010
81950840,0irq/46-4a10000018270-21runrttasks11:21:160
82050830,0irq/47-4a10000031011-21ssh11:50:410
82050830,0irq/47-4a10000026973-21kworker/u2:612:06:400
82050830,0irq/47-4a10000026882-21ssh09:12:540
82050830,0irq/47-4a1000001740-21ssh11:58:110
82050830,0irq/47-4a10000016071-21rm11:16:160
82050830,0irq/47-4a10000012086-21snmpd09:55:050
82050830,0irq/47-4a10000012086-21snmpd08:14:350
82050830,0irq/47-4a10000010272-21sshd07:32:080
81950830,0irq/46-4a10000017474-21ssh10:05:120
81950830,0irq/46-4a10000012486-21ssh09:53:560
47072839,0sleep04710-21ssh10:50:160
82050820,0irq/47-4a1000008417-21munin-run07:20:030
82050820,0irq/47-4a1000008259-21rm09:44:140
82050820,0irq/47-4a10000014625-21rm11:13:020
82050820,0irq/47-4a10000014568-21munin-run08:00:020
82050820,0irq/47-4a10000010640-21ssh11:04:000
82050810,0irq/47-4a10000023796-21kworker/u2:310:35:340
82050810,0irq/47-4a10000018299-21apt08:25:010
82050810,0irq/47-4a10000012086-21snmpd08:34:390
81950810,0irq/46-4a1000002320-21ssh09:30:260
82050800,0irq/47-4a10000031230-21kworker/u2:510:56:010
82050800,0irq/47-4a10000012086-21snmpd07:39:000
82050800,0irq/47-4a10000011776-21ssh12:21:080
82050790,0irq/47-4a1000009337-21seq07:25:290
65312790,0sleep03015-21kworker/u2:407:10:520
253542770,0sleep024521-21kworker/u2:710:23:290
126482760,0sleep011138-21kworker/u2:007:46:340
82050610,0irq/47-4a10000011699-21cron08:53:000
81950590,0irq/46-4a1000000-21swapper08:05:080
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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