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
Special All - All RT - Optimization - Ethernet - Thumbnails - Next

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 100 highest latencies:

System rackeslot4s.osadl.org (updated Wed Sep 16, 2026 12:44:06)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
519575	99	51	48,2	cyclictest	550530	-21	kworker/u8:0+flush-259:0	08:10:24	0
519575	99	45	42,2	cyclictest	550530	-21	kworker/u8:0+flush-259:0	08:50:26	0
519575	99	43	39,3	cyclictest	832300	-21	kworker/u8:3+events_unbound	12:35:01	0
519583	99	41	35,4	cyclictest	738607	-21	apt-key	10:40:01	2
519583	99	40	35,4	cyclictest	857772	-21	kworker/u8:2+flush-259:0	12:35:00	2
519583	99	39	35,3	cyclictest	628827	-21	kworker/u8:2+events_unbound	09:45:02	2
519583	99	39	35,3	cyclictest	628827	-21	kworker/u8:2+events_unbound	09:45:02	2
519575	99	39	36,2	cyclictest	659469	-21	kworker/u8:1+flush-259:0	09:35:00	0
519575	99	39	36,2	cyclictest	659469	-21	kworker/u8:1+flush-259:0	09:35:00	0
519575	99	39	0,37	cyclictest	1	-21	systemd	12:05:00	0
519583	99	38	34,3	cyclictest	634674	-21	kworker/u8:0+flush-259:0	09:15:24	2
519583	99	38	33,3	cyclictest	634039	-21	apt-get	09:00:12	2
519583	99	38	33,3	cyclictest	623684	-21	apt-get	08:50:12	2
519575	99	38	35,2	cyclictest	607939	-21	kworker/u8:3+flush-259:0	09:00:00	0
519586	99	37	27,4	cyclictest	566302	-21	latency_hist	07:55:01	3
519583	99	37	34,2	cyclictest	780480	-21	kworker/u8:3+events_unbound	11:20:25	2
519579	99	37	33,3	cyclictest	758736	-21	kworker/u8:0+flush-259:0	11:00:19	1
519579	99	37	32,3	cyclictest	530381	-21	apt-get	07:20:11	1
519579	99	35	29,4	cyclictest	686555	-21	apt-get	09:50:10	1
519583	99	33	30,2	cyclictest	530157	-21	kworker/u8:3+flush-259:0	07:35:26	2
519583	99	33	29,3	cyclictest	706904	-21	kworker/u8:2+flush-259:0	10:15:24	2
519575	99	33	29,3	cyclictest	613396	-21	apt-get	08:40:13	0
519575	99	33	25,6	cyclictest	335557	-21	systemd-journal	11:05:01	0
519586	99	32	27,3	cyclictest	826665	-21	kworker/u8:0+flush-259:0	12:40:01	3
519579	99	32	28,3	cyclictest	758736	-21	kworker/u8:0+flush-259:0	11:05:25	1
519575	99	32	28,3	cyclictest	634674	-21	kworker/u8:0+flush-259:0	09:05:21	0
519583	99	31	26,4	cyclictest	335557	-21	systemd-journal	09:56:34	2
519575	99	31	28,2	cyclictest	722158	-21	kworker/u8:0+events_unbound	10:25:01	0
519586	99	30	24,4	cyclictest	556225	-21	apt-get	07:45:10	3
519583	99	29	25,3	cyclictest	712189	-21	kworker/u8:3+flush-259:0	10:50:22	2
519579	99	29	25,3	cyclictest	597244	-21	kworker/u8:2+flush-259:0	08:30:14	1
519579	99	29	24,3	cyclictest	530157	-21	kworker/u8:3+flush-259:0	07:35:25	1
519575	99	29	26,2	cyclictest	706904	-21	kworker/u8:2+flush-259:0	10:10:24	0
519575	99	29	26,2	cyclictest	509134	-21	kworker/u8:0+events_unbound	07:25:25	0
519575	99	29	22,5	cyclictest	335557	-21	systemd-journal	10:32:34	0
519586	99	28	22,4	cyclictest	659649	-21	latency_hist	09:25:00	3
519586	99	28	21,5	cyclictest	738568	-21	cat	10:40:01	3
519586	99	28	21,5	cyclictest	675797	-21	/usr/sbin/munin	09:40:15	3
519583	99	28	24,3	cyclictest	530157	-21	kworker/u8:3+flush-259:0	07:55:27	2
519583	99	28	23,3	cyclictest	769514	-21	kworker/u8:1+events_unbound	12:15:19	2
519575	99	28	24,3	cyclictest	832300	-21	kworker/u8:3+events_unbound	12:10:17	0
519575	99	28	24,3	cyclictest	669627	-21	kworker/u8:0+events_unbound	09:45:28	0
519575	99	28	24,3	cyclictest	669627	-21	kworker/u8:0+events_unbound	09:45:27	0
519575	99	28	24,3	cyclictest	597244	-21	kworker/u8:2+events_unbound	08:25:12	0
519575	99	28	24,3	cyclictest	576866	-21	apt-get	08:05:11	0
519575	99	28	23,3	cyclictest	780480	-21	kworker/u8:3+flush-259:0	11:55:23	0
519579	99	27	20,5	cyclictest	335557	-21	systemd-journal	09:25:00	1
519575	99	27	24,2	cyclictest	748791	-21	kworker/u8:2+events_unbound	11:30:18	0
519583	99	26	23,2	cyclictest	769514	-21	kworker/u8:1+events_unbound	12:05:15	2
519579	99	26	21,4	cyclictest	587175	-21	apt-get	08:15:13	1
519575	99	26	23,2	cyclictest	712189	-21	kworker/u8:3+flush-259:0	10:45:18	0
519575	99	26	23,2	cyclictest	481681	-21	kworker/u8:1+flush-259:0	07:20:18	0
519575	99	26	23,2	cyclictest	481681	-21	kworker/u8:1+flush-259:0	07:15:16	0
519575	99	26	22,3	cyclictest	659469	-21	kworker/u8:1+flush-259:0	09:25:18	0
519575	99	26	22,3	cyclictest	628827	-21	kworker/u8:2+events_unbound	09:02:47	0
519575	99	26	21,4	cyclictest	701426	-21	kworker/u8:1+events_unbound	10:09:36	0
519586	99	25	18,5	cyclictest	335557	-21	systemd-journal	09:50:01	3
519586	99	25	18,5	cyclictest	335557	-21	systemd-journal	09:50:01	3
519583	99	25	22,2	cyclictest	748791	-21	kworker/u8:2+events_unbound	11:25:23	2
519579	99	25	21,3	cyclictest	748791	-21	kworker/u8:2+flush-259:0	11:30:25	1
519579	99	25	19,4	cyclictest	826665	-21	kworker/u8:0+flush-259:0	12:15:00	1
519579	99	25	19,4	cyclictest	801500	-21	/usr/sbin/munin	11:40:19	1
519586	99	24	17,5	cyclictest	550530	-21	kworker/u8:0+flush-259:0	08:15:18	3
519583	99	24	20,3	cyclictest	712189	-21	kworker/u8:3+flush-259:0	10:55:24	2
519583	99	24	20,3	cyclictest	550530	-21	kworker/u8:0+events_unbound	07:47:38	2
519583	99	24	19,3	cyclictest	780480	-21	kworker/u8:3+events_unbound	11:45:19	2
519579	99	24	20,3	cyclictest	669627	-21	kworker/u8:0+flush-259:0	09:55:17	1
519579	99	24	20,2	cyclictest	639237	-21	apt-get	09:05:11	1
519579	99	24	19,3	cyclictest	712412	-21	/usr/sbin/munin	10:15:15	1
519575	99	24	21,2	cyclictest	706904	-21	kworker/u8:2+flush-259:0	10:15:21	0
519575	99	24	20,3	cyclictest	769514	-21	kworker/u8:1+events_unbound	12:05:22	0
519583	99	23	19,3	cyclictest	769514	-21	kworker/u8:1+flush-259:0	12:20:16	2
519583	99	23	18,3	cyclictest	481681	-21	kworker/u8:1+events_unbound	07:20:17	2
519583	99	23	17,4	cyclictest	581763	-21	latency_hist	08:10:00	2
519579	99	23	20,2	cyclictest	550530	-21	kworker/u8:0+flush-259:0	08:05:25	1
519575	99	23	20,2	cyclictest	769514	-21	kworker/u8:1+flush-259:0	12:15:21	0
519575	99	23	20,2	cyclictest	550530	-21	kworker/u8:0+events_unbound	08:15:14	0
519575	99	23	19,3	cyclictest	758736	-21	kworker/u8:0+flush-259:0	11:05:23	0
519575	99	23	19,3	cyclictest	607939	-21	kworker/u8:3+flush-259:0	09:10:16	0
519575	99	23	19,3	cyclictest	550530	-21	kworker/u8:0+flush-259:0	07:40:21	0
519586	99	22	6,4	cyclictest	612228	-21	ld	08:35:21	3
519586	99	22	5,6	cyclictest	617395	-21	gcc	08:40:22	3
519583	99	22	19,2	cyclictest	748791	-21	kworker/u8:2+flush-259:0	11:30:17	2
519583	99	22	19,2	cyclictest	748791	-21	kworker/u8:2+events_unbound	11:15:23	2
519583	99	22	18,3	cyclictest	769514	-21	kworker/u8:1+events_unbound	12:10:13	2
519583	99	22	18,3	cyclictest	706904	-21	kworker/u8:2+flush-259:0	10:10:16	2
519583	99	22	18,3	cyclictest	481681	-21	kworker/u8:1+events_unbound	07:30:24	2
519583	99	22	16,4	cyclictest	738043	-21	latency_hist	10:40:01	2
519579	99	22	18,3	cyclictest	857772	-21	kworker/u8:2+flush-259:0	12:38:34	1
519579	99	22	17,3	cyclictest	335557	-21	systemd-journal	07:20:01	1
519575	99	22	19,2	cyclictest	780480	-21	kworker/u8:3+events_unbound	11:21:35	0
519575	99	22	19,2	cyclictest	669627	-21	kworker/u8:0+flush-259:0	09:35:24	0
519575	99	22	19,2	cyclictest	550530	-21	kworker/u8:0+flush-259:0	08:20:15	0
519575	99	22	17,4	cyclictest	628827	-21	kworker/u8:2+events_unbound	10:00:17	0
519575	99	22	17,3	cyclictest	712189	-21	kworker/u8:3+events_unbound	10:50:15	0
519575	99	22	15,5	cyclictest	738704	-21	/usr/sbin/munin	10:40:20	0
519586	99	21	17,3	cyclictest	607939	-21	kworker/u8:3+flush-259:0	08:50:01	3
519586	99	21	14,4	cyclictest	649336	-21	latency_hist	09:15:01	3
519583	99	21	18,2	cyclictest	832300	-21	kworker/u8:3+events_unbound	12:25:20	2
519583	99	21	17,3	cyclictest	634674	-21	kworker/u8:0+flush-259:0	09:20:28	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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