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2026-03-11 - 10:16

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 Wed Mar 11, 2026 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1011810,0ktimersoftd/024888-21kworker/0:019:06:480
273899912551,0cyclictest81950irq/46-4a10000000:30:020
273899911712,0cyclictest26911-21kworker/u2:119:15:120
273899911526,0cyclictest32250-21idleruntime-cro19:40:000
273899911430,0cyclictest11301-21sshd20:55:200
273899911428,0cyclictest20048-21rm22:32:440
273899911327,0cyclictest7483-21ssh23:14:490
273899911327,0cyclictest10729-21apt-get00:30:500
273899911326,0cyclictest9196-21apt22:10:010
273899911128,0cyclictest5901-21ssh22:02:520
273899911126,0cyclictest16302-21seq22:25:010
273899911112,0cyclictest24253-21kworker/u2:722:45:000
273899911028,0cyclictest15848-21latency_hist21:15:060
273899911011,0cyclictest1418-21ssh00:10:130
273899911010,0cyclictest7757-21ssh23:15:110
273899910940,0cyclictest81950irq/46-4a10000023:51:250
273899910925,0cyclictest19828-21ssh23:40:360
273899910920,0cyclictest30473-21ssh22:54:510
273899910912,0cyclictest13411-21diskmemload21:56:340
273899910911,0cyclictest21830-21rm22:36:260
273899910829,0cyclictest31881-21diskmemload21:49:080
273899910825,0cyclictest16868-21cron21:17:020
273899910824,0cyclictest29110-21rm00:00:090
273899910811,0cyclictest2770-21cron20:00:010
273899910811,0cyclictest10428-21munin-run20:50:020
273899910729,0cyclictest843-21kworker/u2:020:25:020
273899910729,0cyclictest3936-21ssh00:15:320
273899910729,0cyclictest11657-21sshd23:59:190
273899910728,0cyclictest5461-21runrttasks20:16:070
273899910728,0cyclictest22558-21ssh21:29:130
273899910728,0cyclictest18331-21ssh22:29:110
273899910728,0cyclictest11693-21ssh22:15:100
273899910711,0cyclictest4230-21ssh23:07:480
273899910627,0cyclictest21478-21kworker/u2:021:40:020
273899910625,0cyclictest6245-21kworker/u2:220:30:020
273899910624,0cyclictest31703-21ssh22:57:200
273899910624,0cyclictest1581-21ssh23:02:120
273899910611,0cyclictest9692-21ssh22:10:560
273899910540,0cyclictest81950irq/46-4a10000023:40:020
273899910540,0cyclictest81950irq/46-4a10000022:46:450
273899910528,0cyclictest13491-21sshd23:27:180
27389991049,0cyclictest28886-21runrttasks21:42:380
273899910432,0cyclictest13422-21munin-run21:10:030
273899910428,0cyclictest4558-21latency_hist20:10:030
273899910413,0cyclictest423-21ssh21:51:090
273899910412,0cyclictest10241-21ssh23:20:230
273899910411,0cyclictest31929-21kworker/u2:100:23:510
273899910333,0cyclictest81950irq/46-4a10000000:36:390
273899910331,0cyclictest23826-21sh23:49:140
273899910325,0cyclictest82050irq/47-4a10000020:52:180
273899910310,0cyclictest3957-21sshd20:05:520
273899910310,0cyclictest23551-21diskmemload21:31:130
273899910235,0cyclictest81950irq/46-4a10000021:24:170
273899910215,0cyclictest556-21munin-run19:45:020
273899910210,0cyclictest31538-21sshd00:05:170
273899910210,0cyclictest1287-21cron19:50:020
273899910124,0cyclictest15805-21ssh23:32:110
273899910123,0cyclictest29667-21sshd19:22:040
273899910020,0cyclictest28851-21kworker/u2:419:30:010
273899910012,0cyclictest25390-21kworker/u2:019:10:030
27389999913,0cyclictest31165-21sshd19:32:200
27389999912,0cyclictest9690-21apt20:45:010
27389999825,0cyclictest7553-21latency_hist20:30:030
27389999813,0cyclictest3555-21munin-run20:05:020
27389999811,0cyclictest8962-21sendmail-msp20:40:010
27389999811,0cyclictest12074-21sshd21:00:200
2738999978,0cyclictest1680-21sshd19:52:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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