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2025-12-02 - 18:13

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 Tue Dec 02, 2025 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
818501620,0irq/46-4a10000015180-21lldpd07:08:450
81950880,0irq/47-4a10000029686-21latency_hist10:20:060
81950880,0irq/47-4a10000025723-21sendmail11:19:590
81950850,0irq/47-4a10000029379-21sshd12:36:190
81950840,0irq/47-4a10000018879-21ssh09:56:520
81950840,0irq/47-4a10000015323-21ssh09:49:200
81950830,0irq/47-4a100000833-21kworker/u2:307:15:010
81950830,0irq/47-4a10000032210-21runrttasks09:15:550
81950830,0irq/47-4a10000030075-21runrttasks09:11:340
81950820,0irq/47-4a1000004799-21kworker/u2:209:39:170
81950820,0irq/47-4a1000002711-21kworker/u2:010:40:060
81950820,0irq/47-4a10000025024-21kworker/u2:012:30:040
81950820,0irq/47-4a10000018002-21kworker/u2:208:00:190
81950820,0irq/47-4a10000017954-21ssh12:11:530
81950820,0irq/47-4a10000017842-21kworker/u2:312:25:020
81950820,0irq/47-4a10000015482-21awk07:39:530
81950820,0irq/47-4a10000012967-21ssh12:01:220
81850820,0irq/46-4a1000009580-21ssh11:54:240
81850820,0irq/46-4a1000005302-21ssh09:27:480
81950810,0irq/47-4a10000027220-21kworker/u2:408:59:560
81950810,0irq/47-4a10000026935-21ssh12:31:050
81950810,0irq/47-4a1000002464-21ssh09:21:390
81950810,0irq/47-4a10000023576-21kworker/u2:608:49:540
81950810,0irq/47-4a10000020665-21sshd11:09:160
81950810,0irq/47-4a10000020472-21kworker/u2:308:29:570
81950810,0irq/47-4a10000019223-21kworker/u2:211:35:480
81950810,0irq/47-4a10000016674-21sendmail-mta07:47:370
81950810,0irq/47-4a10000013317-21ssh10:53:460
81950810,0irq/47-4a10000012978-21kworker/u2:212:20:050
81850810,0irq/46-4a1000003672-21sh11:41:450
81850810,0irq/46-4a10000023366-21runrttasks11:15:000
176212817,0sleep017630-21ssh11:02:450
81950800,0irq/47-4a1000005677-21ssh11:45:580
81950800,0irq/47-4a10000029681-21ssh11:28:160
81950800,0irq/47-4a10000020472-21kworker/u2:308:29:550
81850800,0irq/46-4a10000017038-21runrttasks09:52:570
2972628010,0sleep029728-21sendmail10:20:000
81950790,0irq/47-4a10000020503-21ssh10:00:130
81950790,0irq/47-4a1000002025-21cron10:29:560
81950790,0irq/47-4a10000015184-21lldpd10:09:250
81950790,0irq/47-4a10000015180-21lldpd09:30:080
81950790,0irq/47-4a10000011222-21ssh09:40:230
81850790,0irq/46-4a1000002523-21ssh10:30:490
318752790,0sleep031322-21kworker/u2:111:32:530
275302790,0chrt25706-21kworker/u2:411:23:440
265952790,0chrt20246-21kworker/u2:610:13:270
81950780,0irq/47-4a10000024325-21kworker/u2:008:39:540
81950780,0irq/47-4a10000018002-21kworker/u2:207:59:550
81850780,0irq/46-4a10000026765-21sshd08:53:130
217872780,0chrt20472-21kworker/u2:308:20:210
159682780,0sleep09980-21kworker/u2:310:59:220
158482780,0sleep015758-21kworker/u2:507:41:530
81950770,0irq/47-4a10000017255-21kworker/u2:107:54:530
81950770,0irq/47-4a10000010525-21kworker/u2:011:59:090
81850770,0irq/46-4a10000025849-21kworker/u2:109:04:560
151532779,0sleep015156-21sh12:05:440
81950760,0irq/47-4a10000028740-21kworker/u2:009:09:560
81850760,0irq/46-4a10000020858-21munin-run08:14:530
61092760,0sleep030331-21kworker/u2:1210:38:310
137872760,0chrt13587-21kworker/u2:007:28:190
108432750,0chrt10126-21kworker/u2:207:11:020
81950740,0irq/47-4a1000009524-21ssh10:45:360
81850730,0irq/46-4a10000020126-21awk08:09:530
81850710,0irq/46-4a10000025504-21cron08:44:540
101670,0ktimersoftd/013089-21runrttasks07:23:370
101640,0ktimersoftd/021012-21runrttasks08:15:180
101590,0ktimersoftd/015201-21runrttasks07:31:080
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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