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 Sat May 02, 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
2791566	2	106	0,3	sleep0	20	1	rcuc/0	20:56:14	0
2680552	99	60	47,11	cyclictest	280	-21	systemd-journal	22:25:00	1
2878269	2	57	0,1	sleep1	2878272	-21	cut	22:26:08	1
2680554	99	54	49,4	cyclictest	2941285	-21	kworker/u8:0+flush-8:0	00:26:18	2
2680552	99	54	36,16	cyclictest	2891749	-21	/usr/sbin/munin	22:41:12	1
2680547	99	53	43,7	cyclictest	280	-21	systemd-journal	20:45:00	0
2963274	2	51	0,4	sleep3	0	-21	swapper/3	23:51:09	3
2680552	99	49	41,5	cyclictest	2817082	-21	latency_hist	21:25:01	1
2993055	2	48	0,3	sleep3	75	-21	kworker/3:1-events	00:21:11	3
2680552	99	48	28,7	cyclictest	280	-21	systemd-journal	19:38:45	1
2680547	99	48	40,6	cyclictest	2762277	-21	apt-get	20:29:59	0
2680552	99	47	30,8	cyclictest	2726545	-21	ntpq	19:51:21	1
2680552	99	46	24,5	cyclictest	2985724	-21	cron	00:15:00	1
2680554	99	45	41,3	cyclictest	2670644	-21	kworker/u8:1+flush-8:0	20:16:17	2
2680554	99	45	40,3	cyclictest	2670644	-21	kworker/u8:1+events_unbound	23:21:19	2
2680554	99	45	38,5	cyclictest	2822053	-21	kworker/u8:3+events_unbound	21:56:13	2
2680547	99	45	39,4	cyclictest	2901688	-21	apt-get	22:50:58	0
2680547	99	45	38,5	cyclictest	2936262	-21	kworker/u8:2+flush-8:0	23:56:12	0
2680547	99	44	38,4	cyclictest	2738003	-21	kworker/u8:0+flush-8:0	20:20:00	0
2680547	99	44	37,5	cyclictest	2880409	-21	ntpq	22:26:11	0
2680547	99	44	34,8	cyclictest	2994731	-21	ntpq	00:21:14	0
2680547	99	44	34,7	cyclictest	280	-21	systemd-journal	21:34:59	0
2680554	99	43	37,5	cyclictest	2738003	-21	kworker/u8:0+events_unbound	20:42:47	2
2680547	99	43	37,4	cyclictest	2670644	-21	kworker/u8:1+flush-8:0	20:10:00	0
2680547	99	43	31,4	cyclictest	2738003	-21	kworker/u8:0+flush-8:0	21:11:19	0
2680552	99	42	36,4	cyclictest	2670644	-21	kworker/u8:1+flush-8:0	20:21:15	1
2680552	99	42	35,5	cyclictest	280	-21	systemd-journal	00:31:04	1
2680552	99	42	32,7	cyclictest	280	-21	systemd-journal	20:10:03	1
2680547	99	42	34,5	cyclictest	2702731	-21	kworker/u8:3+events_unbound	20:01:12	0
2680554	99	41	37,3	cyclictest	2670644	-21	kworker/u8:1+flush-8:0	19:11:21	2
2680554	99	41	36,4	cyclictest	2670644	-21	kworker/u8:1+events_unbound	19:15:04	2
2680547	99	41	0,39	cyclictest	1	-21	systemd	21:40:00	0
2680552	99	40	34,4	cyclictest	2832271	-21	apt-get	21:40:59	1
2680552	99	40	33,5	cyclictest	2665288	-21	kworker/u8:2+flush-8:0	19:21:16	1
2680552	99	40	30,8	cyclictest	2741413	-21	ntpq	20:06:14	1
2680552	99	40	29,8	cyclictest	280	-21	systemd-journal	19:25:45	1
2680547	99	40	34,5	cyclictest	2941285	-21	kworker/u8:0+flush-8:0	23:31:13	0
2680547	99	40	33,5	cyclictest	2954975	-21	ntpq	23:41:11	0
2680547	99	40	32,6	cyclictest	2665288	-21	kworker/u8:2+events_unbound	19:26:11	0
2680552	99	39	30,6	cyclictest	2866479	-21	latency_hist	22:15:01	1
2680552	99	39	30,6	cyclictest	2866479	-21	latency_hist	22:15:01	1
2680547	99	39	33,4	cyclictest	2831364	-21	kworker/u8:0+events_unbound	22:46:12	0
2680547	99	39	33,4	cyclictest	2665288	-21	kworker/u8:2+flush-8:0	19:46:14	0
2680547	99	38	32,4	cyclictest	2886280	-21	kworker/u8:2+flush-8:0	22:56:12	0
2680554	99	37	33,3	cyclictest	2802499	-21	kworker/u8:2+events_unbound	21:21:20	2
2680554	99	37	32,4	cyclictest	2936262	-21	kworker/u8:2+events_unbound	00:36:12	2
2680554	99	37	32,4	cyclictest	2936262	-21	kworker/u8:2+events_unbound	00:36:12	2
2680552	99	37	25,9	cyclictest	2970895	-40	logrotate	00:00:00	1
2680547	99	37	31,4	cyclictest	2996073	-21	kworker/u8:1+flush-8:0	00:26:06	0
2680547	99	37	30,5	cyclictest	2936262	-21	kworker/u8:2+flush-8:0	00:16:15	0
2680554	99	36	29,5	cyclictest	2772597	-21	cron	20:40:00	2
2680547	99	36	32,3	cyclictest	2738003	-21	kworker/u8:0+flush-8:0	20:36:08	0
2680547	99	36	31,3	cyclictest	2802499	-21	kworker/u8:2+flush-8:0	21:26:12	0
2680547	99	36	30,4	cyclictest	2831364	-21	kworker/u8:0+flush-8:0	23:21:15	0
2680547	99	36	29,4	cyclictest	2913543	-21	kworker/u8:3+events_unbound	23:36:03	0
2680552	99	35	28,5	cyclictest	280	-21	systemd-journal	22:46:45	1
2680552	99	35	23,8	cyclictest	2762277	-21	apt-get	20:30:01	1
2680547	99	35	27,6	cyclictest	2915317	-21	ntpq	23:01:16	0
2680547	99	35	24,9	cyclictest	2890302	-21	ntpq	22:36:11	0
2680554	99	34	30,3	cyclictest	2670644	-21	kworker/u8:1+events_unbound	23:00:01	2
2680554	99	33	28,3	cyclictest	2941285	-21	kworker/u8:0+events_unbound	00:20:00	2
2680552	99	33	29,3	cyclictest	2685639	-21	systemctl	19:15:01	1
2680552	99	33	26,5	cyclictest	2901938	-21	diskstats	22:51:02	1
2680552	99	33	25,6	cyclictest	2817400	-21	apt-get	21:25:59	1
2680547	99	33	28,3	cyclictest	2941285	-21	kworker/u8:0+flush-8:0	23:51:10	0
2680547	99	33	27,4	cyclictest	2670644	-21	kworker/u8:1+flush-8:0	20:11:04	0
2680547	99	33	27,3	cyclictest	2670644	-21	kworker/u8:1+events_unbound	20:33:20	0
2680547	99	33	26,5	cyclictest	2831364	-21	kworker/u8:0+flush-8:0	22:31:08	0
2680547	99	33	22,5	cyclictest	2936262	-21	kworker/u8:2+events_unbound	23:26:13	0
2680552	99	32	27,4	cyclictest	2757551	-21	kworker/u8:2+flush-8:0	20:41:16	1
2680552	99	32	27,2	cyclictest	0	-21	swapper/1	22:40:01	1
2680552	99	32	21,9	cyclictest	2965089	-21	ntpq	23:51:12	1
2680547	99	32	27,4	cyclictest	2665288	-21	kworker/u8:2+events_unbound	19:16:02	0
2680547	99	32	26,4	cyclictest	2913543	-21	kworker/u8:3+flush-8:0	23:11:12	0
2680547	99	32	24,6	cyclictest	3005734	-21	latency_hist	00:35:01	0
2680554	99	31	23,6	cyclictest	280	-21	systemd-journal	21:40:45	2
2680554	99	31	23,6	cyclictest	2762277	-21	apt-get	20:30:00	2
2680552	99	31	25,5	cyclictest	2670644	-21	kworker/u8:1+flush-8:0	23:08:17	1
2680552	99	31	21,8	cyclictest	2811242	-21	ntpq	21:16:12	1
2680547	99	31	27,3	cyclictest	2665288	-21	kworker/u8:2+flush-8:0	19:44:05	0
2680547	99	31	26,3	cyclictest	2670644	-21	kworker/u8:1+events_unbound	20:51:05	0
2680547	99	31	25,4	cyclictest	2916549	-21	aten2_r5power_e	23:06:04	0
2680547	99	31	24,5	cyclictest	2831364	-21	kworker/u8:0+events_unbound	21:51:15	0
2680547	99	31	20,8	cyclictest	2685514	-21	latency_hist	19:15:01	0
2680552	99	30	25,4	cyclictest	2670644	-21	kworker/u8:1+flush-8:0	21:01:16	1
2680552	99	30	25,3	cyclictest	2998334	-21	kthreadcore	00:26:10	1
2680552	99	30	23,5	cyclictest	2842161	-21	apt-get	21:50:58	1
2680547	99	30	26,2	cyclictest	2727441	-21	systemd-run	19:55:00	0
2680547	99	30	25,3	cyclictest	2980807	-21	cat	00:10:00	0
2680547	99	30	24,4	cyclictest	2670644	-21	kworker/u8:1+flush-8:0	22:41:03	0
2680547	99	30	22,6	cyclictest	2757320	-21	latency_hist	20:25:01	0
2680547	99	30	19,9	cyclictest	2696643	-21	ntpq	19:21:11	0
2680547	99	30	18,5	cyclictest	2941285	-21	kworker/u8:0+flush-8:0	00:11:11	0
2680554	99	29	23,4	cyclictest	2985356	-21	unixbench_multi	00:11:25	2
2680554	99	29	21,6	cyclictest	280	-21	systemd-journal	21:55:00	2
2680552	99	29	26,2	cyclictest	2722506	-21	systemd-run	19:50:00	1
2680552	99	29	25,3	cyclictest	2799783	-21	kthreadcore	21:06:09	1
2680552	99	29	21,6	cyclictest	2926368	-21	/usr/sbin/munin	23:16:11	1
2680552	99	29	19,8	cyclictest	280	-21	systemd-journal	00:25:00	1
2680547	99	29	24,3	cyclictest	2861592	-21	systemd-run	22:10:00	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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