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2026-06-20 - 14:50

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 376 highest latencies:
System rack9slot8s.osadl.org (updated Sat Jun 20, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819502110,0irq/46-4a10000026528-21kworker/0:007:05:020
81950650,0irq/46-4a10000027802-21cyclictest07:20:290
27805996345,0cyclictest1665-21apt-get11:20:370
27805996250,0cyclictest81950irq/46-4a10000012:00:030
27805996249,0cyclictest81950irq/46-4a10000007:15:060
27805996043,0cyclictest9-21ksoftirqd/012:31:350
27805996039,0cyclictest22734-21sshd10:03:160
27805996035,0cyclictest7978-21kworker/u2:512:01:510
27805995944,0cyclictest11909-21kworker/u2:109:23:390
27805995940,0cyclictest11122-21apt-config12:20:060
82050580,0irq/47-4a10000011699-21cron12:17:010
81950580,0irq/46-4a100000101ktimersoftd/007:25:390
27805995847,0cyclictest81950irq/46-4a10000008:23:300
27805995846,0cyclictest81950irq/46-4a10000011:20:040
27805995846,0cyclictest81950irq/46-4a10000009:55:030
27805995839,0cyclictest14144-21munin-run12:40:020
27805995831,0cyclictest2871-21sshd07:50:380
27805995829,0cyclictest9602-21chrt12:10:080
101580,0ktimersoftd/012113-21runrttasks08:14:450
81950570,0irq/46-4a10000032086-1kworker/u3:107:40:300
27805995746,0cyclictest81950irq/46-4a10000007:40:030
27805995746,0cyclictest81950irq/46-4a10000007:15:030
27805995745,0cyclictest81950irq/46-4a10000009:55:300
27805995744,0cyclictest81950irq/46-4a10000008:35:010
27805995742,0cyclictest81950irq/46-4a10000009:00:510
27805995742,0cyclictest23239-21kworker/u2:010:06:210
27805995741,0cyclictest29186-21runrttasks10:46:180
27805995740,0cyclictest6823-21sshd11:53:150
27805995645,0cyclictest81950irq/46-4a10000011:15:010
27805995641,0cyclictest7135-21sh08:20:000
27805995640,0cyclictest8987-21seq12:06:070
27805995640,0cyclictest25187-21apt10:20:020
27805995638,0cyclictest10871-21awk08:45:010
94750550,0irq/33-mmc027364-1kworker/0:2H10:54:460
81950550,0irq/46-4a10000014191-1kworker/u3:009:10:010
81950550,0irq/46-4a1000000-21swapper08:27:030
27805995545,0cyclictest81950irq/46-4a10000011:50:010
27805995544,0cyclictest81950irq/46-4a10000010:25:220
27805995543,0cyclictest81950irq/46-4a10000010:39:470
27805995541,0cyclictest13092-21sendmail09:00:010
27805995540,0cyclictest25521-21kworker/u2:110:32:210
27805995538,0cyclictest12354-21munin-run08:55:010
27805995537,0cyclictest2501-21munin-run07:50:010
27805995537,0cyclictest19901-21latency_hist09:45:030
27805995535,0cyclictest15326-21idleruntime-cro09:15:000
27805995444,0cyclictest81950irq/46-4a10000012:26:430
27805995442,0cyclictest81950irq/46-4a10000007:57:570
27805995438,0cyclictest32359-21seq07:34:000
27805995438,0cyclictest19017-21runrttasks09:39:570
27805995438,0cyclictest18339-21latency_hist09:35:020
27805995432,0cyclictest4446-21sshd08:01:170
27805995425,0cyclictest28916-21apt10:45:010
27805995424,0cyclictest12086-21snmpd10:59:510
27805995424,0cyclictest12086-21snmpd10:24:440
27805995422,0cyclictest12086-21snmpd11:45:000
101540,0ktimersoftd/00-21swapper09:15:120
27805995338,0cyclictest11424-21seq08:48:430
27805995337,0cyclictest4834-21munin-run11:40:000
27805995335,0cyclictest10187-21latency_hist08:40:030
94750520,0irq/33-mmc027364-1kworker/0:2H11:09:510
27805995236,0cyclictest3291-21runrttasks11:29:390
27805995234,0cyclictest31891-21munin-run11:05:020
101520,0ktimersoftd/00-21swapper10:10:390
101520,0ktimersoftd/00-21swapper09:41:240
101520,0ktimersoftd/00-21swapper09:25:580
27805995137,0cyclictest5640-21cron08:10:010
27805995034,0cyclictest30681-21kworker/u2:311:30:400
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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