OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #4

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: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system

Characteristics of the 50 highest latencies:

System rackeslot4s.osadl.org (updated Fri May 02, 2025 00:44:06)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2992928	99	41	37,3	cyclictest	3086662	-21	kworker/u8:2+events_unbound	21:00:34	0
2992935	99	39	23,13	cyclictest	3113653	-21	latency_hist	21:05:01	2
2992928	99	37	33,3	cyclictest	3290637	-21	kworker/u8:2+events_unbound	23:57:33	0
2992928	99	34	31,2	cyclictest	3274996	-21	kworker/u8:1+events_unbound	23:39:34	0
2992928	99	34	30,3	cyclictest	3098104	-21	kworker/u8:3+events_unbound	20:56:34	0
2992931	99	33	29,3	cyclictest	3150021	-21	kworker/u8:0+events_unbound	22:35:02	1
2992928	99	32	29,2	cyclictest	3050698	-21	kworker/u8:2+events_unbound	20:13:33	0
2992935	99	31	25,4	cyclictest	3000860	-21	systemd-journal	20:39:31	2
2992941	99	29	25,3	cyclictest	3290637	-21	kworker/u8:2+events_unbound	00:25:33	3
2992928	99	29	26,2	cyclictest	2971352	-21	kworker/u8:0+events_unbound	19:22:33	0
2992941	99	28	24,3	cyclictest	3086662	-21	kworker/u8:2+events_unbound	20:45:00	3
2992935	99	27	21,4	cyclictest	3092063	-21	ntpq	20:40:30	2
2992931	99	27	21,4	cyclictest	3259966	-21	latency_hist	23:25:00	1
2992928	99	27	24,2	cyclictest	3228639	-21	kworker/u8:0+events_unbound	23:15:28	0
2992941	99	26	21,4	cyclictest	3000860	-21	systemd-journal	00:00:01	3
2992935	99	26	22,3	cyclictest	3098104	-21	kworker/u8:3+flush-259:0	21:05:21	2
2992935	99	26	22,3	cyclictest	3098104	-21	kworker/u8:3+flush-259:0	21:05:21	2
2992928	99	26	23,2	cyclictest	3039538	-21	kworker/u8:0+events_unbound	20:02:42	0
2992928	99	26	23,2	cyclictest	3039538	-21	kworker/u8:0+events_unbound	19:55:31	0
2992928	99	26	19,5	cyclictest	3087701	-21	latency_hist	20:40:00	0
2992935	99	25	19,4	cyclictest	3000860	-21	systemd-journal	00:15:00	2
2992928	99	25	19,4	cyclictest	3000860	-21	systemd-journal	21:19:59	0
2992941	99	24	21,2	cyclictest	2971352	-21	kworker/u8:0+flush-259:0	19:20:23	3
2992941	99	24	20,3	cyclictest	3207801	-21	kworker/u8:4+events_unbound	22:48:34	3
2992941	99	24	20,3	cyclictest	3039538	-21	kworker/u8:0+events_unbound	20:11:33	3
2992935	99	24	17,5	cyclictest	3249454	-21	kworker/u8:3+flush-259:0	23:35:17	2
2992931	99	24	18,4	cyclictest	3117929	-21	ntpq	21:05:23	1
2992931	99	24	18,4	cyclictest	3117929	-21	ntpq	21:05:23	1
2992941	99	23	20,2	cyclictest	3274996	-21	kworker/u8:1+flush-259:0	23:45:01	3
2992941	99	23	19,3	cyclictest	3128978	-21	kworker/u8:2+events_unbound	21:34:34	3
2992935	99	23	16,5	cyclictest	3196736	-21	latency_hist	22:25:01	2
2992931	99	23	18,4	cyclictest	3218677	-21	apt-get	22:45:12	1
2992928	99	23	20,2	cyclictest	3150021	-21	kworker/u8:0+events_unbound	22:39:57	0
2992941	99	22	19,2	cyclictest	3249454	-21	kworker/u8:3+flush-259:0	23:25:18	3
2992941	99	22	19,2	cyclictest	3191548	-21	kworker/u8:2+events_unbound	22:28:33	3
2992941	99	22	19,2	cyclictest	3150021	-21	kworker/u8:0+flush-259:0	22:10:21	3
2992941	99	22	18,3	cyclictest	3150021	-21	kworker/u8:0+events_unbound	21:50:17	3
2992941	99	22	16,4	cyclictest	3259093	-21	ntpq	23:20:23	3
2992931	99	22	16,4	cyclictest	3170827	-21	kworker/u8:1+flush-259:0	22:25:19	1
2992931	99	22	15,5	cyclictest	3013702	-21	latency_hist	19:30:00	1
2992928	99	22	19,2	cyclictest	3290637	-21	kworker/u8:2+events_unbound	00:32:33	0
2992928	99	22	19,2	cyclictest	3191548	-21	kworker/u8:2+events_unbound	22:33:34	0
2992928	99	22	19,2	cyclictest	3039538	-21	kworker/u8:0+events_unbound	20:09:46	0
2992941	99	21	18,2	cyclictest	2977172	-21	kworker/u8:2+flush-259:0	19:10:19	3
2992941	99	21	17,3	cyclictest	3128978	-21	kworker/u8:2+events_unbound	21:58:33	3
2992941	99	21	17,3	cyclictest	3066538	-21	kworker/u8:1+events_unbound	20:51:33	3
2992941	99	21	17,3	cyclictest	2992870	-21	kworker/u8:3+events_unbound	19:37:32	3
2992931	99	21	18,2	cyclictest	2992870	-21	kworker/u8:3+flush-259:0	19:25:01	1
2992931	99	21	16,3	cyclictest	3000860	-21	systemd-journal	00:05:33	1
2992931	99	21	14,5	cyclictest	3254801	-21	latency_hist	23:20:00	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2021-09-01 - 00:34