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 100 highest latencies:

System rackeslot4s.osadl.org (updated Mon Sep 14, 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
2562639	99	57	52,3	cyclictest	2734976	-21	kworker/u8:0+flush-259:0	10:30:22	2
2562630	99	49	43,4	cyclictest	2766490	-21	latency_hist	10:25:01	0
2562643	99	42	35,5	cyclictest	2708857	-21	latency_hist	09:30:00	3
2562639	99	42	39,2	cyclictest	2862582	-21	kworker/u8:0+events_unbound	12:05:23	2
2562639	99	42	39,2	cyclictest	2783207	-21	kworker/u8:0+flush-259:0	11:30:14	2
2562639	99	40	36,3	cyclictest	2567694	-21	kworker/u8:2+events_unbound	07:25:21	2
2562639	99	37	34,2	cyclictest	2734976	-21	kworker/u8:0+flush-259:0	10:10:23	2
2562643	99	36	30,4	cyclictest	2588885	-21	/usr/sbin/munin	07:35:25	3
2562639	99	36	32,3	cyclictest	2897502	-21	kworker/u8:4+events_unbound	12:35:14	2
2562639	99	36	29,3	cyclictest	2862582	-21	kworker/u8:0+events_unbound	12:00:17	2
2562634	99	36	23,4	cyclictest	2823848	-21	ntpq	11:15:22	1
2562639	99	35	32,2	cyclictest	2714457	-21	kworker/u8:3+flush-259:0	09:45:24	2
2562639	99	35	32,2	cyclictest	2614280	-21	kworker/u8:2+flush-259:0	09:25:21	2
2562639	99	35	31,3	cyclictest	2887424	-21	kworker/u8:2+events_unbound	12:30:13	2
2562639	99	35	31,3	cyclictest	2677413	-21	kworker/u8:0+events_unbound	09:35:15	2
2562630	99	35	31,3	cyclictest	2862582	-21	kworker/u8:0+flush-259:0	12:00:24	0
2562630	99	35	31,3	cyclictest	2756451	-21	apt-get	10:15:11	0
2562630	99	35	30,3	cyclictest	2714679	-21	apt-get	09:35:12	0
2562643	99	34	30,3	cyclictest	2614289	-21	kworker/u8:4+flush-259:0	08:20:23	3
2562639	99	34	31,2	cyclictest	2819635	-21	kworker/u8:2+events_unbound	11:40:20	2
2562639	99	34	31,2	cyclictest	2583530	-21	kworker/u8:1+events_unbound	07:35:24	2
2562639	99	34	30,2	cyclictest	2614289	-21	kworker/u8:4+events_unbound	09:00:19	2
2562639	99	33	30,2	cyclictest	2856168	-21	kworker/u8:1+events_unbound	11:55:20	2
2562639	99	33	30,2	cyclictest	2567694	-21	kworker/u8:2+events_unbound	07:15:22	2
2562639	99	33	29,3	cyclictest	2603859	-21	kworker/u8:0+flush-259:0	07:55:16	2
2562639	99	32	29,2	cyclictest	2793321	-21	kworker/u8:4+events_unbound	10:55:20	2
2562639	99	32	29,2	cyclictest	2567694	-21	kworker/u8:2+flush-259:0	07:20:23	2
2562639	99	32	28,2	cyclictest	2783207	-21	kworker/u8:0+events_unbound	11:25:17	2
2562639	99	32	27,3	cyclictest	2593837	-21	kworker/u8:3+events_unbound	07:50:17	2
2562643	99	31	27,2	cyclictest	2766713	-21	kworker/u8:2+events_unbound	10:35:20	3
2562643	99	31	26,4	cyclictest	2547081	-21	kworker/u8:1+flush-259:0	07:10:16	3
2562643	99	31	25,4	cyclictest	2609592	-21	apt-get	07:55:11	3
2562643	99	30	25,3	cyclictest	2567694	-21	kworker/u8:2+flush-259:0	07:20:16	3
2562639	99	30	27,2	cyclictest	2734976	-21	kworker/u8:0+flush-259:0	10:00:23	2
2562639	99	30	27,2	cyclictest	2724756	-21	kworker/u8:1+flush-259:0	10:05:15	2
2562639	99	30	27,2	cyclictest	2614280	-21	kworker/u8:2+events_unbound	09:50:16	2
2562639	99	30	26,3	cyclictest	2846066	-21	kworker/u8:3+events_unbound	11:45:20	2
2562630	99	30	24,4	cyclictest	2677661	-21	apt-get	09:00:13	0
2562643	99	29	25,3	cyclictest	2897502	-21	kworker/u8:4+flush-259:0	12:35:18	3
2562643	99	29	25,3	cyclictest	2614280	-21	kworker/u8:2+flush-259:0	08:20:01	3
2562643	99	29	24,3	cyclictest	2740915	-21	apt-get	10:00:10	3
2562639	99	29	26,2	cyclictest	2783207	-21	kworker/u8:0+events_unbound	10:45:18	2
2562639	99	29	26,2	cyclictest	2614289	-21	kworker/u8:4+events_unbound	08:35:21	2
2562639	99	29	26,2	cyclictest	2614280	-21	kworker/u8:2+events_unbound	08:10:24	2
2562639	99	29	25,3	cyclictest	2724756	-21	kworker/u8:1+flush-259:0	11:05:16	2
2562639	99	29	25,3	cyclictest	2547081	-21	kworker/u8:1+flush-259:0	07:10:20	2
2562639	99	29	24,4	cyclictest	2614280	-21	kworker/u8:2+events_unbound	09:10:21	2
2562643	99	28	24,2	cyclictest	2766539	-21	systemd-run	10:25:00	3
2562643	99	28	21,5	cyclictest	335557	-21	systemd-journal	12:15:00	3
2562643	99	28	21,4	cyclictest	2646406	-21	latency_hist	08:30:01	3
2562639	99	28	25,2	cyclictest	2856168	-21	kworker/u8:1+events_unbound	11:53:38	2
2562639	99	28	25,2	cyclictest	2714457	-21	kworker/u8:3+flush-259:0	09:40:19	2
2562639	99	28	24,3	cyclictest	2830129	-21	kworker/u8:1+events_unbound	11:35:23	2
2562639	99	28	24,3	cyclictest	2793321	-21	kworker/u8:4+flush-259:0	10:50:16	2
2562639	99	28	24,3	cyclictest	2734976	-21	kworker/u8:0+events_unbound	10:15:20	2
2562634	99	28	24,3	cyclictest	2636362	-21	apt-get	08:20:12	1
2562630	99	28	0,26	cyclictest	509	-21	rs:main		0
2562643	99	27	22,3	cyclictest	2614280	-21	kworker/u8:2+flush-259:0	09:45:16	3
2562639	99	27	24,2	cyclictest	2766713	-21	kworker/u8:2+flush-259:0	10:35:15	2
2562639	99	27	23,2	cyclictest	2614280	-21	kworker/u8:2+events_unbound	09:15:17	2
2562639	99	27	21,4	cyclictest	2766485	-21	apt-get	10:25:02	2
2562634	99	27	21,4	cyclictest	2851250	-21	/usr/sbin/munin	11:45:13	1
2562630	99	27	23,3	cyclictest	2787704	-21	apt-get	10:44:59	0
2562630	99	27	22,4	cyclictest	2567694	-21	kworker/u8:2+flush-259:0	07:20:24	0
2562643	99	26	19,5	cyclictest	2676530	-21	ntpq	08:55:20	3
2562643	99	26	19,5	cyclictest	2676530	-21	ntpq	08:55:19	3
2562639	99	26	23,2	cyclictest	2614289	-21	kworker/u8:4+events_unbound	08:20:13	2
2562639	99	26	23,2	cyclictest	2614280	-21	kworker/u8:2+flush-259:0	08:55:26	2
2562639	99	26	23,2	cyclictest	2614280	-21	kworker/u8:2+flush-259:0	08:55:25	2
2562639	99	26	22,3	cyclictest	2819635	-21	kworker/u8:2+events_unbound	11:15:19	2
2562634	99	26	21,3	cyclictest	2782738	-21	/usr/sbin/munin	10:40:14	1
2562634	99	26	19,4	cyclictest	335557	-21	systemd-journal	11:10:00	1
2562643	99	25	22,2	cyclictest	2724756	-21	kworker/u8:1+flush-259:0	09:55:21	3
2562643	99	25	21,3	cyclictest	2614289	-21	kworker/u8:4+flush-259:0	08:40:23	3
2562643	99	25	20,3	cyclictest	2651827	-21	apt-get	08:35:12	3
2562639	99	25	22,2	cyclictest	2614289	-21	kworker/u8:4+events_unbound	08:45:21	2
2562639	99	25	22,2	cyclictest	2567694	-21	kworker/u8:2+events_unbound	07:40:16	2
2562639	99	25	21,3	cyclictest	2862582	-21	kworker/u8:0+flush-259:0	12:20:26	2
2562639	99	25	21,3	cyclictest	2862582	-21	kworker/u8:0+events_unbound	12:25:23	2
2562634	99	25	20,3	cyclictest	2862582	-21	kworker/u8:0+flush-259:0	12:25:13	1
2562634	99	25	19,4	cyclictest	2750160	-21	ntpq	10:05:23	1
2562630	99	25	21,3	cyclictest	2819635	-21	kworker/u8:2+flush-259:0	11:40:49	0
2562630	99	25	21,3	cyclictest	2677413	-21	kworker/u8:0+flush-259:0	09:26:07	0
2562643	99	24	19,4	cyclictest	2567694	-21	kworker/u8:2+flush-259:0	07:45:19	3
2562639	99	24	20,3	cyclictest	2856168	-21	kworker/u8:1+events_unbound	12:15:28	2
2562639	99	24	20,3	cyclictest	2614289	-21	kworker/u8:4+events_unbound	09:06:38	2
2562634	99	24	18,4	cyclictest	2682761	-21	cp	09:05:01	1
2562634	99	24	18,4	cyclictest	2578599	-21	apt-get	07:25:13	1
2562630	99	24	19,4	cyclictest	2871924	-21	apt-get	12:05:11	0
2562630	99	24	19,4	cyclictest	2830129	-21	kworker/u8:1+flush-259:0	11:35:17	0
2562630	99	24	19,3	cyclictest	2819635	-21	kworker/u8:2+flush-259:0	11:55:00	0
2562630	99	24	17,5	cyclictest	2788257	-21	gpgv	10:45:01	0
2562643	99	23	18,3	cyclictest	2862582	-21	kworker/u8:0+flush-259:0	12:20:16	3
2562639	99	23	19,3	cyclictest	2677413	-21	kworker/u8:0+events_unbound	09:30:16	2
2562634	99	23	16,5	cyclictest	2730551	-21	/usr/sbin/munin	09:50:14	1
2562630	99	23	19,3	cyclictest	2688441	-21	apt-get	09:10:12	0
2562630	99	23	18,4	cyclictest	2814672	-21	/usr/sbin/munin	11:10:18	0
2562643	99	22	18,2	cyclictest	2614280	-21	kworker/u8:2+flush-259:0	08:45:15	3
2562639	99	22	19,2	cyclictest	2614280	-21	kworker/u8:2+flush-259:0	08:30:38	2
2562639	99	22	19,2	cyclictest	2567694	-21	kworker/u8:2+events_unbound	07:45:13	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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