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 Tue Feb 03, 2026 00:44:06)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2577188	99	55	51,3	cyclictest	2691738	-21	kworker/u8:0+flush-259:0	21:15:23	3
2577188	99	49	45,3	cyclictest	2629481	-21	kworker/u8:2+events_unbound	20:35:24	3
2577180	99	49	46,2	cyclictest	2718372	-21	kworker/u8:3+events_unbound	22:10:14	0
2577180	99	49	46,2	cyclictest	2718372	-21	kworker/u8:3+events_unbound	22:00:22	0
2577180	99	47	44,2	cyclictest	2723741	-21	kworker/u8:1+events_unbound	21:35:24	0
2577180	99	45	41,3	cyclictest	2821380	-21	kworker/u8:3+events_unbound	23:05:20	0
2577188	99	44	40,3	cyclictest	2780154	-21	kworker/u8:2+flush-259:0	22:40:16	3
2577188	99	44	40,3	cyclictest	2780154	-21	kworker/u8:2+flush-259:0	22:40:15	3
2577180	99	44	41,2	cyclictest	2780154	-21	kworker/u8:2+events_unbound	22:40:22	0
2577180	99	44	41,2	cyclictest	2780154	-21	kworker/u8:2+events_unbound	22:40:22	0
2577180	99	42	39,2	cyclictest	2733767	-21	kworker/u8:2+events_unbound	21:50:20	0
2577180	99	42	39,2	cyclictest	2671321	-21	kworker/u8:3+events_unbound	20:45:18	0
2577188	99	41	38,2	cyclictest	2639811	-21	kworker/u8:4+events_unbound	20:10:23	3
2577188	99	41	37,3	cyclictest	2862902	-21	kworker/u8:3+events_unbound	00:20:22	3
2577188	99	41	37,2	cyclictest	2639811	-21	kworker/u8:4+events_unbound	20:20:23	3
2577188	99	40	37,2	cyclictest	2691738	-21	kworker/u8:0+events_unbound	21:05:21	3
2577188	99	40	37,2	cyclictest	2582295	-21	kworker/u8:3+events_unbound	19:25:25	3
2577188	99	40	34,2	cyclictest	2609095	-21	kworker/u8:0+events_unbound	19:55:15	3
2577184	99	40	35,3	cyclictest	252	-21	systemd-journal	19:54:59	2
2577180	99	40	33,5	cyclictest	2727793	-21	ntpq	21:30:22	0
2577180	99	39	36,2	cyclictest	2831678	-21	kworker/u8:2+events_unbound	23:30:14	0
2577180	99	39	36,2	cyclictest	2831678	-21	kworker/u8:2+events_unbound	23:20:21	0
2577188	99	38	35,2	cyclictest	2739000	-21	kworker/u8:1+events_unbound	22:15:22	3
2577180	99	38	35,2	cyclictest	2603725	-21	kworker/u8:2+events_unbound	19:45:14	0
2577188	99	37	34,2	cyclictest	2661053	-21	apt-get	20:30:12	3
2577188	99	37	34,2	cyclictest	2639811	-21	kworker/u8:4+events_unbound	20:25:16	3
2577184	99	37	32,3	cyclictest	2795623	-21	kworker/u8:0+flush-259:0	00:05:11	2
2577188	99	36	33,2	cyclictest	2831678	-21	kworker/u8:2+events_unbound	23:55:20	3
2577188	99	36	33,2	cyclictest	2702407	-21	kworker/u8:1+events_unbound	21:10:24	3
2577188	99	36	33,2	cyclictest	2518212	-21	kworker/u8:2+flush-259:0	19:20:15	3
2577188	99	36	32,3	cyclictest	2691738	-21	kworker/u8:0+flush-259:0	21:30:22	3
2577184	99	36	31,3	cyclictest	2831678	-21	kworker/u8:2+flush-259:0	23:50:01	2
2577180	99	36	33,2	cyclictest	2733767	-21	kworker/u8:2+events_unbound	21:40:20	0
2577180	99	36	32,3	cyclictest	2582295	-21	kworker/u8:3+events_unbound	19:35:22	0
2577188	99	35	31,3	cyclictest	2862902	-21	kworker/u8:3+events_unbound	00:15:15	3
2577188	99	35	30,3	cyclictest	2759622	-21	kworker/u8:2+events_unbound	22:05:24	3
2577184	99	35	30,3	cyclictest	2681640	-21	/usr/sbin/munin	20:50:22	2
2577180	99	35	30,2	cyclictest	2795623	-21	kworker/u8:0+events_unbound	00:05:14	0
2577188	99	34	31,2	cyclictest	2609095	-21	kworker/u8:0+flush-259:0	19:55:00	3
2577188	99	34	30,3	cyclictest	2879003	-21	kworker/u8:4+events_unbound	00:00:16	3
2577188	99	34	26,3	cyclictest	2795623	-21	kworker/u8:0+events_unbound	23:10:22	3
2577184	99	34	29,3	cyclictest	2831678	-21	kworker/u8:2+flush-259:0	23:20:15	2
2577183	99	34	30,3	cyclictest	2718372	-21	kworker/u8:3+flush-259:0	21:45:01	1
2577183	99	34	29,4	cyclictest	2806141	-21	apt-get	22:50:10	1
2577188	99	33	30,2	cyclictest	2712503	-21	kworker/u8:2+events_unbound	21:25:24	3
2577188	99	33	29,3	cyclictest	2811057	-21	kworker/u8:1+events_unbound	22:55:14	3
2577184	99	33	29,3	cyclictest	2609095	-21	kworker/u8:0+flush-259:0	20:15:18	2
2577180	99	33	30,2	cyclictest	2795623	-21	kworker/u8:0+flush-259:0	23:15:34	0
2577188	99	32	29,2	cyclictest	2718372	-21	kworker/u8:3+events_unbound	22:50:21	3
2577183	99	32	27,4	cyclictest	2634628	-21	latency_hist	20:05:00	1
2577180	99	32	28,3	cyclictest	2915153	-21	apt-get	00:35:14	0
2577188	99	31	28,2	cyclictest	2862902	-21	kworker/u8:3+events_unbound	00:30:14	3
2577188	99	31	28,2	cyclictest	2795623	-21	kworker/u8:0+events_unbound	00:05:23	3
2577188	99	31	25,3	cyclictest	2780154	-21	kworker/u8:2+events_unbound	22:25:19	3
2577184	99	31	27,3	cyclictest	2733767	-21	kworker/u8:2+flush-259:0	21:50:14	2
2577180	99	31	29,2	cyclictest	2749505	-21	kworker/u8:0+events_unbound	21:55:17	0
2577180	99	31	26,3	cyclictest	509	-21	rs:main		0
2577184	99	30	25,3	cyclictest	2780379	-21	/usr/sbin/munin	22:25:15	2
2577180	99	30	27,2	cyclictest	2718372	-21	kworker/u8:3+events_unbound	22:16:34	0
2577188	99	29	26,2	cyclictest	2821380	-21	kworker/u8:3+events_unbound	23:05:18	3
2577188	99	29	26,2	cyclictest	2718372	-21	kworker/u8:3+events_unbound	21:40:13	3
2577188	99	29	25,3	cyclictest	2831678	-21	kworker/u8:2+events_unbound	23:50:14	3
2577188	99	29	25,3	cyclictest	2592654	-21	kworker/u8:1+events_unbound	19:30:14	3
2577188	99	29	24,4	cyclictest	2795623	-21	kworker/u8:0+events_unbound	00:27:29	3
2577184	99	29	26,2	cyclictest	2780154	-21	kworker/u8:2+flush-259:0	23:00:23	2
2577184	99	29	25,3	cyclictest	2795623	-21	kworker/u8:0+flush-259:0	23:10:18	2
2577184	99	29	23,4	cyclictest	2857765	-21	latency_hist	23:40:01	2
2577183	99	29	24,3	cyclictest	2879003	-21	kworker/u8:4+flush-259:0	00:00:27	1
2577188	99	28	25,2	cyclictest	2909484	-21	kworker/u8:1+flush-259:0	00:37:35	3
2577188	99	28	25,2	cyclictest	2831678	-21	kworker/u8:2+events_unbound	23:20:23	3
2577183	99	28	23,4	cyclictest	2862902	-21	kworker/u8:3+flush-259:0	00:15:25	1
2577183	99	28	22,4	cyclictest	2872262	-21	ntpq	23:50:20	1
2577180	99	28	25,3	cyclictest	2582295	-21	kworker/u8:3+events_unbound	19:57:01	0
2577180	99	28	24,3	cyclictest	2811304	-21	apt-get	22:55:12	0
2577180	99	28	23,4	cyclictest	2826942	-21	diskstats	23:10:15	0
2577180	99	28	23,4	cyclictest	2603700	-21	latency_hist	19:35:00	0
2577188	99	27	24,2	cyclictest	2609095	-21	kworker/u8:0+events_unbound	20:15:26	3
2577184	99	27	20,5	cyclictest	2618306	-21	ntpq	19:45:22	2
2577183	99	27	23,3	cyclictest	2718372	-21	kworker/u8:3+events_unbound	22:45:25	1
2577180	99	27	24,2	cyclictest	2639811	-21	kworker/u8:4+events_unbound	20:42:33	0
2577180	99	27	23,3	cyclictest	2862902	-21	kworker/u8:3+events_unbound	00:02:35	0
2577180	99	27	0,26	cyclictest	1	-21	systemd	21:05:34	0
2577188	99	26	24,2	cyclictest	2739000	-21	kworker/u8:1+events_unbound	22:20:23	3
2577188	99	26	23,2	cyclictest	2831678	-21	kworker/u8:2+flush-259:0	23:45:16	3
2577188	99	26	22,3	cyclictest	2831678	-21	kworker/u8:2+events_unbound	23:37:36	3
2577188	99	26	22,3	cyclictest	2639782	-21	kworker/u8:1+flush-259:0	20:10:00	3
2577184	99	26	20,4	cyclictest	2878957	-21	cat	00:00:01	2
2577183	99	26	22,3	cyclictest	2691738	-21	kworker/u8:0+flush-259:0	21:05:21	1
2577183	99	26	21,4	cyclictest	2785583	-21	/usr/sbin/munin	22:30:21	1
2577180	99	26	23,2	cyclictest	2671321	-21	kworker/u8:3+events_unbound	21:00:17	0
2577180	99	26	21,3	cyclictest	2582270	-21	latency_hist	19:15:02	0
2577188	99	25	22,2	cyclictest	2862902	-21	kworker/u8:3+flush-259:0	00:10:26	3
2577188	99	25	22,2	cyclictest	2831678	-21	kworker/u8:2+events_unbound	23:41:35	3
2577188	99	25	22,2	cyclictest	2723741	-21	kworker/u8:1+events_unbound	21:35:17	3
2577188	99	25	21,3	cyclictest	2609095	-21	kworker/u8:0+events_unbound	20:00:16	3
2577184	99	25	20,3	cyclictest	2821380	-21	kworker/u8:3+flush-259:0	23:09:59	2
2577184	99	25	18,5	cyclictest	2898528	-21	ntpq	00:15:21	2
2577183	99	25	19,4	cyclictest	252	-21	systemd-journal	00:09:34	1
2577180	99	25	23,2	cyclictest	2862902	-21	kworker/u8:3+events_unbound	00:25:15	0
2577180	99	25	23,2	cyclictest	2831678	-21	kworker/u8:2+flush-259:0	23:40:26	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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