OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, 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, lowest P state: ondemand
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack5slot4s.osadl.org (updated Sun May 03, 2026 00:44:16)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2483657	99	60	55,3	cyclictest	2483541	-21	kworker/u8:3+flush-8:0	20:21:17	1
2483657	99	60	54,5	cyclictest	2750798	-21	kworker/u8:0+flush-8:0	00:36:18	1
2483657	99	60	54,4	cyclictest	2629516	-21	kworker/u8:3+events_unbound	23:06:01	1
2483657	99	59	51,6	cyclictest	2620167	-21	kworker/u8:2+flush-8:0	22:01:17	1
2483662	99	57	47,7	cyclictest	2526075	-21	cat	19:50:01	2
2483662	99	57	47,7	cyclictest	2526075	-21	cat	19:50:00	2
2483657	99	57	50,5	cyclictest	2684716	-21	kworker/u8:1+flush-8:0	23:01:03	1
2483657	99	57	46,8	cyclictest	2609127	-21	ntpq	21:11:12	1
2483657	99	55	51,3	cyclictest	2629516	-21	kworker/u8:3+events_unbound	23:56:17	1
2483657	99	55	49,4	cyclictest	2491285	-21	kworker/u8:0+events_unbound	20:00:01	1
2499223	2	54	0,4	sleep3	75	-21	kworker/3:1-events	19:21:10	3
2483657	99	54	48,5	cyclictest	2620167	-21	kworker/u8:2+flush-8:0	21:46:18	1
2483657	99	54	47,5	cyclictest	2629516	-21	kworker/u8:3+flush-8:0	23:51:13	1
2483656	99	54	48,4	cyclictest	2560479	-21	kworker/u8:2+flush-8:0	21:01:15	0
2483657	99	53	48,3	cyclictest	2560479	-21	kworker/u8:2+flush-8:0	20:36:17	1
2483657	99	52	46,4	cyclictest	2570082	-21	kworker/u8:0+events_unbound	20:56:03	1
2483657	99	51	46,4	cyclictest	2560479	-21	kworker/u8:2+events_unbound	20:51:04	1
2483657	99	51	46,3	cyclictest	2560479	-21	kworker/u8:2+events_unbound	20:46:01	1
2483657	99	51	44,5	cyclictest	2684716	-21	kworker/u8:1+flush-8:0	22:41:14	1
2483656	99	51	44,5	cyclictest	2783798	-21	apt-get	00:11:00	0
2548232	2	50	0,6	chrt	0	-21	swapper/2	20:11:09	2
2483662	99	50	42,5	cyclictest	2649998	-21	cat	21:55:01	2
2483657	99	50	45,4	cyclictest	2684716	-21	kworker/u8:1+events_unbound	22:36:17	1
2483657	99	50	45,4	cyclictest	2483541	-21	kworker/u8:3+events_unbound	19:26:15	1
2483657	99	50	44,4	cyclictest	2750798	-21	kworker/u8:0+flush-8:0	00:26:18	1
2483657	99	49	42,6	cyclictest	2629516	-21	kworker/u8:3+flush-8:0	23:21:12	1
2483656	99	49	44,3	cyclictest	2684716	-21	kworker/u8:1+flush-8:0	23:01:04	0
2483657	99	48	43,3	cyclictest	2483541	-21	kworker/u8:3+flush-8:0	19:11:02	1
2760673	2	47	0,2	sleep3	75	-21	kworker/3:1+mm_percpu_wq	23:46:06	3
2483657	99	47	42,3	cyclictest	2750798	-21	kworker/u8:0+flush-8:0	23:41:12	1
2483657	99	47	42,3	cyclictest	2491285	-21	kworker/u8:0+flush-8:0	19:21:18	1
2483657	99	47	41,4	cyclictest	1808585	-21	kworker/u8:1+events_unbound	19:36:14	1
2483657	99	47	41,4	cyclictest	1808585	-21	kworker/u8:1+events_unbound	19:36:13	1
2483657	99	47	40,5	cyclictest	2620167	-21	kworker/u8:2+events_unbound	21:51:04	1
2483657	99	47	38,6	cyclictest	2663790	-21	ntpq	22:06:12	1
2483657	99	46	41,3	cyclictest	2483541	-21	kworker/u8:3+flush-8:0	19:41:12	1
2483657	99	46	41,3	cyclictest	2483541	-21	kworker/u8:3+flush-8:0	19:41:12	1
2483657	99	46	40,4	cyclictest	2620167	-21	kworker/u8:2+flush-8:0	21:56:19	1
2483657	99	46	39,5	cyclictest	2560479	-21	kworker/u8:2+flush-8:0	20:41:03	1
2483657	99	45	40,4	cyclictest	2620167	-21	kworker/u8:2+flush-8:0	22:31:17	1
2483657	99	45	40,4	cyclictest	2560479	-21	kworker/u8:2+flush-8:0	21:01:13	1
2483657	99	45	39,4	cyclictest	2550272	-21	kworker/u8:1+events_unbound	20:16:13	1
2483657	99	45	38,6	cyclictest	2664666	-21	kworker/u8:0+flush-8:0	22:16:14	1
2483657	99	45	38,5	cyclictest	2729182	-21	apt-get	23:16:00	1
2483657	99	45	33,9	cyclictest	280	-21	systemd-journal	00:30:52	1
2483657	99	44	37,5	cyclictest	2684716	-21	kworker/u8:1+events_unbound	23:11:02	1
2483657	99	44	37,5	cyclictest	2684716	-21	kworker/u8:1+events_unbound	23:11:01	1
2483657	99	44	37,5	cyclictest	2483541	-21	kworker/u8:3+flush-8:0	20:26:17	1
2483657	99	44	36,6	cyclictest	2664666	-21	kworker/u8:0+flush-8:0	22:21:13	1
2483657	99	44	28,12	cyclictest	280	-21	systemd-journal	19:51:53	1
2483656	99	44	37,5	cyclictest	2555512	-21	latency_hist	20:20:01	0
2483657	99	43	39,3	cyclictest	2606162	-21	kworker/u8:1+events_unbound	21:26:19	1
2483657	99	43	39,3	cyclictest	2606162	-21	kworker/u8:1+events_unbound	21:26:19	1
2483657	99	43	38,4	cyclictest	2620167	-21	kworker/u8:2+flush-8:0	22:26:15	1
2483656	99	43	0,41	cyclictest	1	-21	systemd	20:35:00	0
2483657	99	42	37,4	cyclictest	2684716	-21	kworker/u8:1+flush-8:0	22:46:18	1
2483657	99	42	37,4	cyclictest	2560479	-21	kworker/u8:2+events_unbound	21:06:04	1
2483657	99	42	37,3	cyclictest	2620167	-21	kworker/u8:2+flush-8:0	00:21:03	1
2483657	99	42	36,5	cyclictest	2773342	-21	kworker/u8:1+events_unbound	00:06:12	1
2483657	99	42	36,5	cyclictest	1808585	-21	kworker/u8:1+flush-8:0	19:46:04	1
2483657	99	42	36,5	cyclictest	1808585	-21	kworker/u8:1+flush-8:0	19:46:04	1
2483657	99	41	36,3	cyclictest	2595319	-21	kworker/u8:3+flush-8:0	21:16:08	1
2483657	99	41	34,5	cyclictest	2491285	-21	kworker/u8:0+flush-8:0	20:06:14	1
2483656	99	41	35,5	cyclictest	2750798	-21	kworker/u8:0+flush-8:0	00:31:05	0
2483657	99	40	36,3	cyclictest	2629516	-21	kworker/u8:3+flush-8:0	21:41:06	1
2483657	99	40	35,4	cyclictest	2491285	-21	kworker/u8:0+flush-8:0	19:31:19	1
2483657	99	40	35,3	cyclictest	2606162	-21	kworker/u8:1+events_unbound	21:21:12	1
2483657	99	40	33,5	cyclictest	2684716	-21	kworker/u8:1+flush-8:0	22:51:12	1
2483657	99	40	33,5	cyclictest	2620167	-21	kworker/u8:2+events_unbound	22:11:15	1
2483656	99	40	32,6	cyclictest	280	-21	systemd-journal	23:23:48	0
2483657	99	39	35,3	cyclictest	2750798	-21	kworker/u8:0+events_unbound	23:46:13	1
2483657	99	39	32,5	cyclictest	2750798	-21	kworker/u8:0+flush-8:0	23:36:12	1
2483657	99	39	32,5	cyclictest	2620167	-21	kworker/u8:2+flush-8:0	00:11:13	1
2483657	99	39	31,6	cyclictest	2545956	-21	apt-get	20:11:00	1
2483656	99	39	30,6	cyclictest	2709130	-21	latency_hist	22:55:01	0
2701216	2	38	0,5	sleep2	0	-21	swapper/2	22:46:07	2
2483657	99	38	32,4	cyclictest	2491285	-21	kworker/u8:0+flush-8:0	20:01:14	1
2483657	99	38	31,5	cyclictest	2750798	-21	kworker/u8:0+flush-8:0	00:16:18	1
2483657	99	38	31,5	cyclictest	2620167	-21	kworker/u8:2+flush-8:0	00:01:15	1
2483656	99	38	34,3	cyclictest	2620167	-21	kworker/u8:2+events_unbound	21:56:18	0
2483656	99	38	33,4	cyclictest	2491285	-21	kworker/u8:0+flush-8:0	19:46:17	0
2483656	99	38	33,4	cyclictest	2491285	-21	kworker/u8:0+flush-8:0	19:46:16	0
2483656	99	38	31,5	cyclictest	2510964	-21	grep	19:36:02	0
2483656	99	38	31,5	cyclictest	2510964	-21	grep	19:36:02	0
2483656	99	38	30,6	cyclictest	2813109	-21	apt-get	00:40:00	0
2483662	99	37	24,11	cyclictest	2585817	-21	fschecks_count	20:51:04	2
2483657	99	37	26,8	cyclictest	2713190	-21	ntpq	22:56:11	1
2483656	99	37	32,3	cyclictest	2684716	-21	kworker/u8:1+flush-8:0	22:46:16	0
2483656	99	37	32,3	cyclictest	2606162	-21	kworker/u8:1+flush-8:0	21:26:06	0
2483656	99	37	32,3	cyclictest	2606162	-21	kworker/u8:1+flush-8:0	21:26:06	0
2483656	99	37	26,9	cyclictest	0	-21	swapper/0	22:20:00	0
2483662	99	36	19,15	cyclictest	2560895	-21	aten2_r5power_v	20:26:01	2
2483657	99	36	32,3	cyclictest	2684716	-21	kworker/u8:1+events_unbound	23:26:09	1
2483657	99	36	31,4	cyclictest	2629516	-21	kworker/u8:3+flush-8:0	23:31:06	1
2483657	99	36	26,7	cyclictest	280	-21	systemd-journal	21:35:53	1
2483656	99	36	29,5	cyclictest	2782583	-21	ntpq	00:06:12	0
2483656	99	35	31,3	cyclictest	2570082	-21	kworker/u8:0+flush-8:0	20:51:18	0
2483656	99	35	30,3	cyclictest	2684716	-21	kworker/u8:1+events_unbound	22:41:18	0
2483656	99	35	29,4	cyclictest	2664666	-21	kworker/u8:0+flush-8:0	22:21:18	0
2483662	99	34	24,8	cyclictest	280	-21	systemd-journal	19:15:03	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2019-05-28 - 00:17