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2025-12-12 - 08:12

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 Fri Dec 12, 2025 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819501840,0irq/47-4a10000025744-21sshd19:08:150
25988999372,0cyclictest6945-21munin-run20:34:550
25988999351,0cyclictest28843-21munin-run21:44:550
25988998964,0cyclictest25471-21ssh23:55:000
25988998955,0cyclictest14344-21cron00:40:010
25988998860,0cyclictest23287-21ssh22:41:350
25988998859,0cyclictest20494-21ssh23:44:290
25988998665,0cyclictest12019-21ssh23:26:300
25988998659,0cyclictest30896-21sshd00:06:170
25988998652,0cyclictest14874-21ssh23:32:370
25988998568,0cyclictest3082-21sh21:59:010
25988998558,0cyclictest24695-21sshd21:36:040
25988998554,0cyclictest11475-21kworker/u2:122:32:140
25988998468,0cyclictest14826-21in:imuxsock20:03:410
25988998463,0cyclictest10978-21ssh00:32:470
25988998459,0cyclictest22517-21kworker/u2:321:54:560
25988998451,0cyclictest30812-21ssh22:57:330
25988998448,0cyclictest10659-21munin-run20:59:550
25988998362,0cyclictest20970-21ssh22:36:390
25988998361,0cyclictest10612-21ssh23:23:370
25988998359,0cyclictest30636-21kworker/u2:419:49:530
25988998359,0cyclictest25862-21ssh22:46:590
25988998359,0cyclictest2021-21ssh23:05:110
25988998358,0cyclictest4310-21kworker/u2:420:24:530
25988998358,0cyclictest29425-21ssh00:03:150
25988998351,0cyclictest15264-21ssh21:16:150
25988998265,0cyclictest11947-21ssh22:17:380
25988998264,0cyclictest3137-21ssh00:16:120
25988998264,0cyclictest13670-21sh22:21:130
25988998262,0cyclictest20216-21ssh21:26:390
25988998259,0cyclictest27006-21ssh23:58:110
25988998259,0cyclictest17721-21ssh21:21:230
25988998257,0cyclictest5127-21ssh22:03:130
25988998257,0cyclictest12148-21diskmemload00:20:050
25988998255,0cyclictest27746-21ssh22:50:560
25988998251,0cyclictest22723-21ssh23:49:120
25988998251,0cyclictest14620-21rm21:14:570
25988998250,0cyclictest7344-21grep00:25:040
25988998165,0cyclictest9270-21latency_hist20:49:560
25988998163,0cyclictest5208-21ssh23:12:040
25988998160,0cyclictest8617-21ssh22:10:260
25988998159,0cyclictest28676-21apt-config19:24:540
25988998157,0cyclictest1675-21ssh23:04:390
25988998065,0cyclictest4310-21kworker/u2:420:17:530
25988998063,0cyclictest9087-21seq20:49:170
25988998056,0cyclictest29076-21sshd19:26:010
25988998048,0cyclictest22321-21ssh21:31:040
25988997962,0cyclictest6456-21apt-get22:05:470
25988997961,0cyclictest15828-21ssh22:25:290
25988997958,0cyclictest7693-21munin-run20:39:550
25988997957,0cyclictest2124-21ssh00:14:110
25988997862,0cyclictest26847-21munin-node19:14:560
25988997861,0cyclictest1562-21munin-run19:59:550
25988997860,0cyclictest29067-21ssh21:45:130
25988997856,0cyclictest3981-21munin-run20:14:540
25988997846,0cyclictest17620-21ssh23:38:300
25988997845,0cyclictest7150-21ssh23:16:120
25988997760,0cyclictest10918-21sshd21:01:030
25988997751,0cyclictest8734-21kworker/u2:121:09:550
25988997660,0cyclictest30742-21runrttasks19:37:380
25988997656,0cyclictest26072-21latency_hist19:09:530
25988997558,0cyclictest6190-21seq20:29:510
25988997558,0cyclictest2681-21seq20:05:260
25988997456,0cyclictest29705-21runrttasks19:30:080
25988997454,0cyclictest15184-21lldpd19:42:340
25988997452,0cyclictest432-21sshd19:52:010
25988997451,0cyclictest7953-21sshd20:41:040
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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