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 Mon Jul 13, 2026 00:44:15)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
568335	2	67	0,2	sleep2	37	1	rcuc/2	21:30:12	2
504315	2	47	0,2	chrt	37	1	rcuc/2	20:25:24	2
423235	99	46	42,3	cyclictest	629228	-21	kworker/u8:0+events_unbound	22:50:20	1
423235	99	46	42,3	cyclictest	408657	-21	kworker/u8:2+events_unbound	19:40:21	1
423235	99	46	42,3	cyclictest	408657	-21	kworker/u8:2+events_unbound	00:00:23	1
423235	99	46	35,4	cyclictest	583524	-21	ntpq	21:45:16	1
423231	99	46	41,3	cyclictest	408657	-21	kworker/u8:2+flush-8:0	19:15:05	0
423235	99	44	40,3	cyclictest	71236	-21	kworker/u8:1+events_unbound	20:45:06	1
423235	99	44	40,3	cyclictest	629228	-21	kworker/u8:0+events_unbound	23:30:20	1
423235	99	44	40,3	cyclictest	408657	-21	kworker/u8:2+events_unbound	22:30:18	1
423235	99	44	40,3	cyclictest	408657	-21	kworker/u8:2+events_unbound	21:55:19	1
423235	99	44	38,4	cyclictest	614161	-21	apt-get	22:20:02	1
423235	99	44	32,5	cyclictest	682835	-21	ntpq	23:25:15	1
423240	99	43	34,7	cyclictest	1704890	-21	systemd-journal	23:40:00	2
423235	99	43	39,3	cyclictest	408657	-21	kworker/u8:2+events_unbound	23:10:08	1
423235	99	43	39,3	cyclictest	408657	-21	kworker/u8:2+events_unbound	21:30:05	1
423235	99	42	39,2	cyclictest	629228	-21	kworker/u8:0+events_unbound	22:35:22	1
423235	99	42	38,3	cyclictest	408657	-21	kworker/u8:2+events_unbound	23:15:23	1
423235	99	42	38,3	cyclictest	369911	-21	kworker/u8:0+events_unbound	21:25:03	1
423235	99	42	33,5	cyclictest	0	-21	swapper/1	21:05:01	1
423235	99	42	32,8	cyclictest	623396	-21	ntpq	22:25:18	1
423235	99	42	31,9	cyclictest	434161	-21	ntpq	19:15:20	1
423235	99	41	38,2	cyclictest	599270	-21	kworker/u8:3+events_unbound	00:00:00	1
423235	99	41	37,3	cyclictest	408657	-21	kworker/u8:2+events_unbound	22:10:24	1
423235	99	41	37,3	cyclictest	408657	-21	kworker/u8:2+events_unbound	19:35:21	1
423235	99	40	36,3	cyclictest	71236	-21	kworker/u8:1+events_unbound	19:46:12	1
423235	99	40	36,3	cyclictest	688336	-21	kworker/u8:1+events_unbound	23:40:07	1
423235	99	40	36,3	cyclictest	688336	-21	kworker/u8:1+events_unbound	23:40:06	1
423235	99	40	36,3	cyclictest	408657	-21	kworker/u8:2+events_unbound	21:15:10	1
423235	99	40	36,3	cyclictest	408657	-21	kworker/u8:2+events_unbound	20:29:59	1
423231	99	40	35,4	cyclictest	569516	-21	kworker/u8:1+events_unbound	21:35:21	0
423240	99	39	32,4	cyclictest	614161	-21	apt-get	22:20:00	2
423235	99	39	36,2	cyclictest	569516	-21	kworker/u8:1+events_unbound	21:50:05	1
423235	99	39	35,3	cyclictest	71236	-21	kworker/u8:1+events_unbound	20:10:21	1
423235	99	39	35,3	cyclictest	71236	-21	kworker/u8:1+events_unbound	20:10:21	1
423235	99	39	35,3	cyclictest	71236	-21	kworker/u8:1+events_unbound	19:50:05	1
423235	99	39	35,3	cyclictest	71236	-21	kworker/u8:1+events_unbound	19:50:04	1
423235	99	39	35,3	cyclictest	408657	-21	kworker/u8:2+events_unbound	20:00:58	1
423235	99	39	35,3	cyclictest	369911	-21	kworker/u8:0+events_unbound	20:55:21	1
423231	99	39	32,5	cyclictest	1704890	-21	systemd-journal	19:25:00	0
423235	99	38	35,2	cyclictest	599270	-21	kworker/u8:3+events_unbound	00:23:16	1
423235	99	38	34,3	cyclictest	71236	-21	kworker/u8:1+events_unbound	20:15:05	1
423235	99	38	34,3	cyclictest	688336	-21	kworker/u8:1+events_unbound	00:18:03	1
423235	99	38	34,3	cyclictest	599270	-21	kworker/u8:3+events_unbound	00:26:38	1
423235	99	38	34,3	cyclictest	408657	-21	kworker/u8:2+events_unbound	20:35:25	1
423235	99	38	34,3	cyclictest	408657	-21	kworker/u8:2+events_unbound	00:10:03	1
423235	99	38	34,3	cyclictest	408657	-21	kworker/u8:2+events_unbound	00:05:31	1
423235	99	38	34,3	cyclictest	369911	-21	kworker/u8:0+events_unbound	20:06:37	1
423231	99	38	32,4	cyclictest	659006	-21	latency_hist	23:05:01	0
422567	2	38	4,10	sleep1	0	-21	swapper/1	19:05:25	1
423235	99	37	33,3	cyclictest	71236	-21	kworker/u8:1+events_unbound	20:40:36	1
423235	99	37	33,3	cyclictest	629228	-21	kworker/u8:0+events_unbound	22:55:20	1
423235	99	37	33,3	cyclictest	599270	-21	kworker/u8:3+events_unbound	00:31:04	1
423235	99	37	33,3	cyclictest	569516	-21	kworker/u8:1+events_unbound	22:15:59	1
423235	99	37	33,3	cyclictest	408657	-21	kworker/u8:2+events_unbound	23:23:39	1
423235	99	37	33,3	cyclictest	408657	-21	kworker/u8:2+events_unbound	22:06:28	1
423235	99	37	33,3	cyclictest	408657	-21	kworker/u8:2+events_unbound	20:34:54	1
423235	99	37	33,3	cyclictest	369911	-21	kworker/u8:0+events_unbound	21:10:57	1
423235	99	37	32,4	cyclictest	629228	-21	kworker/u8:0+events_unbound	22:47:00	1
423235	99	37	32,4	cyclictest	569516	-21	kworker/u8:1+events_unbound	21:44:37	1
423235	99	37	24,10	cyclictest	1704890	-21	systemd-journal	23:50:00	1
423235	99	36	32,3	cyclictest	408657	-21	kworker/u8:2+events_unbound	21:23:38	1
423231	99	36	32,3	cyclictest	629228	-21	kworker/u8:0+flush-8:0	22:40:13	0
423235	99	35	32,2	cyclictest	688336	-21	kworker/u8:1+events_unbound	23:53:00	1
423235	99	35	32,2	cyclictest	629228	-21	kworker/u8:0+events_unbound	22:44:00	1
423235	99	35	31,3	cyclictest	71236	-21	kworker/u8:1+events_unbound	19:22:58	1
423235	99	35	31,3	cyclictest	629228	-21	kworker/u8:0+events_unbound	23:00:25	1
423235	99	35	31,3	cyclictest	369911	-21	kworker/u8:0+events_unbound	20:51:18	1
423231	99	35	31,3	cyclictest	599270	-21	kworker/u8:3+events_unbound	00:35:10	0
423231	99	35	31,3	cyclictest	408657	-21	kworker/u8:2+flush-8:0	19:45:08	0
423231	99	35	24,8	cyclictest	1704890	-21	systemd-journal	20:05:00	0
423235	99	34	30,3	cyclictest	569516	-21	kworker/u8:1+events_unbound	22:00:08	1
423235	99	34	30,3	cyclictest	369911	-21	kworker/u8:0+events_unbound	19:12:00	1
423235	99	34	29,4	cyclictest	688336	-21	kworker/u8:1+events_unbound	00:35:09	1
423231	99	34	29,3	cyclictest	614164	-21	awk	22:19:59	0
423231	99	34	28,4	cyclictest	71236	-21	kworker/u8:1+flush-8:0	19:55:08	0
423231	99	34	27,5	cyclictest	702601	-21	ntpq	23:45:15	0
423231	99	34	22,9	cyclictest	1704890	-21	systemd-journal	20:50:01	0
423235	99	33	29,3	cyclictest	408657	-21	kworker/u8:2+events_unbound	20:21:29	1
423231	99	33	23,8	cyclictest	1704890	-21	systemd-journal	19:31:59	0
423235	99	32	29,2	cyclictest	688336	-21	kworker/u8:1+events_unbound	23:35:24	1
423235	99	32	28,3	cyclictest	71236	-21	kworker/u8:1+events_unbound	19:31:33	1
423235	99	32	28,3	cyclictest	71236	-21	kworker/u8:1+events_unbound	19:26:11	1
423235	99	32	27,4	cyclictest	71236	-21	kworker/u8:1+events_unbound	19:55:42	1
423231	99	32	26,4	cyclictest	408657	-21	kworker/u8:2+flush-8:0	21:10:08	0
423231	99	32	25,5	cyclictest	619616	-21	apt-get	22:25:03	0
423231	99	32	24,6	cyclictest	594324	-21	latency_hist	22:00:00	0
423231	99	32	23,7	cyclictest	440309	-21	/usr/sbin/munin	19:25:15	0
423240	99	31	25,4	cyclictest	579055	-21	unixbench_singl	21:40:23	2
423235	99	31	27,3	cyclictest	569516	-21	kworker/u8:1+events_unbound	21:37:01	1
423235	99	31	27,3	cyclictest	408657	-21	kworker/u8:2+events_unbound	23:07:40	1
423235	99	31	27,3	cyclictest	369911	-21	kworker/u8:0+events_unbound	21:09:00	1
423231	99	31	27,3	cyclictest	514199	-21	unixbench_singl	20:35:24	0
423231	99	31	26,4	cyclictest	629228	-21	kworker/u8:0+flush-8:0	22:37:01	0
423231	99	31	26,3	cyclictest	369911	-21	kworker/u8:0+events_unbound	19:10:00	0
423231	99	31	24,5	cyclictest	539368	-21	latency_hist	21:05:02	0
423231	99	31	24,5	cyclictest	369911	-21	kworker/u8:0+flush-8:0	20:50:12	0
423231	99	31	22,4	cyclictest	369911	-21	kworker/u8:0+flush-8:0	19:10:05	0
422628	2	31	3,9	sleep2	0	-21	swapper/2	19:06:11	2
423240	99	30	22,6	cyclictest	1704890	-21	systemd-journal	22:15:00	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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