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2026-04-04 - 11:31

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 Sat Apr 04, 2026 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
351501810,0irq/20-4900000026734-21kworker/0:019:06:060
82050900,0irq/47-4a10000013962-21kworker/u2:621:17:260
82050890,0irq/47-4a10000014366-21munin-run23:30:020
82050890,0irq/47-4a1000001369-21sshd23:02:150
562428710,0sleep05630-21ssh23:11:190
82050860,0irq/47-4a1000007935-21ssh00:25:030
82050860,0irq/47-4a1000004961-21awk23:10:010
82050860,0irq/47-4a10000026372-21ssh23:55:070
82050860,0irq/47-4a10000021367-21rm22:35:310
252142869,0sleep025220-21ssh21:34:530
82050850,0irq/47-4a10000022503-21ssh23:47:030
82050850,0irq/47-4a10000016699-21kworker/u2:423:41:210
82050850,0irq/47-4a10000012086-21snmpd23:24:350
82050850,0irq/47-4a10000010306-21ssh00:30:030
81950850,0irq/46-4a10000027632-21modprobe21:40:000
81950850,0irq/46-4a10000026908-21ssh22:47:350
82050840,0irq/47-4a10000017471-1kworker/u3:223:55:010
81950840,0irq/46-4a10000015760-21latency_hist21:15:040
81950840,0irq/46-4a1000001406-21ssh21:53:150
301742840,0chrt28546-21kworker/u2:721:45:140
82050830,0irq/47-4a1000009980-21kworker/u2:522:12:390
82050830,0irq/47-4a1000008892-21munin-run20:40:020
82050830,0irq/47-4a10000027944-21runrttasks19:14:070
82050830,0irq/47-4a10000014947-21run-parts00:40:010
82050830,0irq/47-4a10000013375-21apt21:10:020
82050830,0irq/47-4a10000012086-21snmpd19:58:360
81950830,0irq/46-4a10000012113-21runrttasks22:16:510
46262837,0sleep04549-21latency_hist22:00:050
82050820,0irq/47-4a1000006989-21ssh22:05:040
82050820,0irq/47-4a1000003349-21diskmemload00:15:150
82050820,0irq/47-4a10000028617-21rm22:51:100
82050820,0irq/47-4a10000028371-21cpu19:15:110
82050820,0irq/47-4a10000023948-21kworker/u2:722:55:120
82050820,0irq/47-4a10000019189-21rm21:22:040
82050820,0irq/47-4a1000001337-21sshd19:49:120
41752826,0sleep04181-21ssh21:59:140
82050810,0irq/47-4a1000008959-21ssh23:18:290
82050810,0irq/47-4a1000006934-21seq20:26:150
82050810,0irq/47-4a10000028902-21ssh00:00:300
82050810,0irq/47-4a10000024099-21ssh22:41:330
82050810,0irq/47-4a10000015990-21ssh23:33:260
82050810,0irq/47-4a10000015321-21ssh22:22:550
82050810,0irq/47-4a10000012086-21snmpd19:43:320
82050810,0irq/47-4a10000010516-21sshd20:50:150
82050810,0irq/47-4a10000010383-21latency_hist20:50:030
81950810,0irq/46-4a10000029308-21ssh21:43:310
81950810,0irq/46-4a10000012113-21runrttasks00:07:410
81950810,0irq/46-4a10000011469-21seq20:57:000
91082800,0chrt8411-21kworker/u2:120:40:470
82050800,0irq/47-4a10000031898-21sshd19:36:050
82050800,0irq/47-4a10000031242-21runrttasks19:31:440
82050800,0irq/47-4a10000029557-21kworker/u2:419:25:010
82050800,0irq/47-4a10000029556-21kworker/u2:119:25:270
82050800,0irq/47-4a10000021103-21ssh21:26:050
82050800,0irq/47-4a10000020905-21cron22:35:010
82050800,0irq/47-4a10000016699-21kworker/u2:423:40:030
82050800,0irq/47-4a1000001479-21kworker/u2:300:14:000
82050800,0irq/47-4a10000012086-21snmpd20:03:370
81950800,0irq/46-4a1000008535-21ssh00:26:120
82050790,0irq/47-4a1000005686-21sshd20:18:160
82050790,0irq/47-4a1000004751-21kworker/u2:620:25:030
82050790,0irq/47-4a1000003956-21sshd20:06:150
82050790,0irq/47-4a10000017401-21ssh22:27:210
79992790,0sleep07036-21kworker/u2:020:33:560
20482790,0chrt1710-21kworker/u2:019:53:550
81950740,0irq/46-4a1000004818-21sshd20:12:160
82050720,0irq/47-4a10000012086-21snmpd21:03:510
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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