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2025-07-12 - 12:58

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 792 highest latencies:
System rack9slot8s.osadl.org (updated Sat Jul 12, 2025 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
160849912252,0cyclictest81850irq/46-4a10000000:00:030
819501100,0irq/47-4a10000014471-21kworker/u2:419:04:520
16084999833,0cyclictest0-21swapper21:33:060
16084999232,0cyclictest0-21swapper21:55:020
81850820,0irq/46-4a10000015206-21runrttasks22:45:120
81850800,0irq/46-4a1000005436-21ssh23:33:350
81850780,0irq/46-4a10000031806-21kworker/u2:122:13:120
81850780,0irq/46-4a10000016390-21ssh21:39:200
81850780,0irq/46-4a10000013151-21ssh23:49:590
81850780,0irq/46-4a10000011419-21runrttasks22:37:150
81850770,0irq/46-4a10000014402-21ssh23:52:310
81850760,0irq/46-4a10000031603-21ssh23:20:120
81850760,0irq/46-4a10000025165-21ssh00:15:100
81850750,0irq/46-4a10000027011-21ssh23:10:340
81850740,0irq/46-4a10000032721-21ssh00:31:100
81850740,0irq/46-4a10000015201-21runrttasks21:29:210
81850730,0irq/46-4a10000019690-1kworker/u3:221:47:340
81850720,0irq/46-4a1000001613-21apt-config23:25:130
81850710,0irq/46-4a100000560-21kswapd020:10:190
81850710,0irq/46-4a1000003153-21kworker/u2:221:14:070
81850710,0irq/46-4a10000027708-21sshd20:22:300
81850710,0irq/46-4a10000027276-21kworker/u2:023:15:140
81850700,0irq/46-4a1000008441-21ssh21:22:280
81850700,0irq/46-4a1000001781-21kworker/u2:522:17:050
81850700,0irq/46-4a10000011822-21kworker/u2:300:07:330
81850680,0irq/46-4a1000005595-21apt-get22:25:430
81850680,0irq/46-4a1000004240-21kworker/u2:622:59:160
81850680,0irq/46-4a10000030717-21kworker/u2:000:28:470
81850680,0irq/46-4a10000026969-21kworker/u2:322:08:450
81850680,0irq/46-4a10000015173-21snmpd22:00:010
81850680,0irq/46-4a10000014437-21ssh22:43:450
81850670,0irq/46-4a1000005569-21kworker/u2:421:17:310
81850670,0irq/46-4a10000019689-21kworker/u2:021:52:410
81850670,0irq/46-4a10000011822-21kworker/u2:300:10:150
81850660,0irq/46-4a10000032042-21kworker/u2:320:55:180
81850660,0irq/46-4a10000031806-21kworker/u2:122:32:200
81850660,0irq/46-4a10000028845-21ssh00:23:030
81850660,0irq/46-4a10000018633-1kworker/u3:200:04:220
81850650,0irq/46-4a1000006971-21kworker/u2:223:39:050
81850650,0irq/46-4a10000022676-21ssh23:01:160
81850650,0irq/46-4a10000012851-21kworker/u2:121:43:220
81850630,0irq/46-4a10000024233-1kworker/u3:020:19:530
16084996250,0cyclictest81850irq/46-4a10000022:24:580
81850600,0irq/46-4a1000000-21swapper00:36:530
81850590,0irq/46-4a10000016367-1kworker/u3:419:16:300
81850590,0irq/46-4a1000000-21swapper23:43:320
16084995944,0cyclictest81850irq/46-4a10000020:05:180
101570,0ktimersoftd/026505-21ssh23:09:390
81850560,0irq/46-4a1000000-21swapper20:31:120
16084995544,0cyclictest81850irq/46-4a10000020:54:540
81850540,0irq/46-4a1000000-21swapper22:51:450
101540,0ktimersoftd/00-21swapper20:39:220
16084995141,0cyclictest81850irq/46-4a10000019:29:500
16084995135,0cyclictest1506-21sshd21:03:320
16084995127,0cyclictest9-21ksoftirqd/019:35:420
16084995033,0cyclictest23900-21run-parts19:59:510
16084995031,0cyclictest2441-21munin-run21:09:540
16084994938,0cyclictest81850irq/46-4a10000020:01:110
16084994938,0cyclictest81850irq/46-4a10000019:34:500
16084994838,0cyclictest81850irq/46-4a10000019:50:240
16084994837,0cyclictest81850irq/46-4a10000019:21:270
16084994834,0cyclictest21918-21runrttasks19:45:530
16084994831,0cyclictest31709-21awk20:49:530
16084994738,0cyclictest101ktimersoftd/020:44:310
16084994630,0cyclictest16158-21latency_hist19:09:510
16084994629,0cyclictest28791-21cat20:29:530
16084994528,0cyclictest15173-21snmpd19:44:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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