OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #7, slot #2

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 highest latencies:

System rack7slot2.osadl.org (updated Fri Jul 31, 2026 12:44:09)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2915880	99	123	100,17	cyclictest	2985206	-21	kworker/u4:13+events_unbound	10:09:43	0
2915880	99	113	77,32	cyclictest	53	-21	kswapd0	11:40:11	0
2915880	99	112	97,7	cyclictest	2717031	-21	kworker/u4:2+events_unbound	07:29:07	0
2915880	99	104	90,12	cyclictest	2958581	-21	kworker/u4:0+events_unbound	09:34:35	0
2915880	99	104	90,12	cyclictest	2958581	-21	kworker/u4:0+events_unbound	09:34:34	0
2915880	99	103	95,6	cyclictest	2937720	-21	kworker/u4:1+events_unbound	09:19:32	0
2915880	99	101	93,6	cyclictest	3029675	-21	kworker/u4:4+events_unbound	10:59:58	0
2915880	99	99	92,5	cyclictest	3105171	-21	kworker/u4:4+events_unbound	12:10:14	0
2915880	99	99	92,5	cyclictest	3020647	-21	kworker/u4:6+events_unbound	10:34:50	0
2915882	99	98	91,5	cyclictest	2944095	-21	kworker/u4:18+events_unbound	09:24:30	1
2915880	99	91	83,6	cyclictest	3025156	-21	kworker/u4:8+events_unbound	10:49:54	0
2915880	99	91	83,6	cyclictest	3025156	-21	kworker/u4:8+events_unbound	10:49:54	0
2915882	99	88	37,32	cyclictest	3108467	-21	timerwakeupswit	12:10:39	1
2915880	99	83	75,6	cyclictest	2923664	-21	kworker/u4:12+events_unbound	08:24:19	0
2915882	99	80	52,24	cyclictest	37	-21	kcompactd0	10:05:20	1
2915880	99	80	72,6	cyclictest	2917099	-21	kworker/u4:1+events_unbound	07:39:07	0
2915880	99	80	69,5	cyclictest	2917099	-21	kworker/u4:1+events_unbound	07:54:10	0
2915882	99	78	46,29	cyclictest	3080450	-21	latency_hist	11:40:02	1
2915880	99	77	70,5	cyclictest	2945393	-21	kworker/u4:20+events_unbound	09:04:26	0
2915880	99	75	67,6	cyclictest	3065095	-21	kworker/u4:10+events_unbound	11:25:03	0
2915880	99	75	63,9	cyclictest	2915877	-21	cyclictest	09:35:07	0
2915880	99	74	67,5	cyclictest	2917099	-21	kworker/u4:1+events_unbound	07:14:04	0
2915880	99	72	64,6	cyclictest	2917101	-21	kworker/u4:8+events_unbound	07:24:06	0
2915882	99	71	6,23	cyclictest	3059076	-21	ssh	11:15:29	1
2915882	99	69	34,32	cyclictest	3044721	-21	sendmail	11:00:00	1
2915882	99	69	25,41	cyclictest	0	-21	swapper/1	10:50:15	1
2915882	99	68	37,27	cyclictest	3071980	-21	diskstats	11:30:18	1
2915880	99	68	62,5	cyclictest	3025153	-21	kworker/u4:2+events_unbound	10:54:55	0
2915882	99	67	45,20	cyclictest	3031944	-21	df_abs	10:45:19	1
2915882	99	67	45,20	cyclictest	3031944	-21	df_abs	10:45:19	1
2915882	99	67	34,30	cyclictest	0	-21	swapper/1	12:25:28	1
2915880	99	67	59,6	cyclictest	2924962	-21	kworker/u4:14+events_unbound	08:39:23	0
2915882	99	66	38,26	cyclictest	3089540	-21	ssh	11:50:15	1
2915880	99	66	59,5	cyclictest	2928772	-21	kworker/u4:9+events_unbound	08:34:21	0
2915880	99	66	56,7	cyclictest	3005058	-21	apt-get	10:15:14	0
2915880	99	66	37,25	cyclictest	3115927	-21	munin-run	12:20:00	0
2915882	99	65	31,31	cyclictest	0	-21	swapper/1	09:15:17	1
2915882	99	65	31,30	cyclictest	0	-21	swapper/1	12:05:18	1
2915882	99	64	58,4	cyclictest	3123233	-21	kworker/u4:11+events_unbound	12:30:17	1
2915882	99	64	35,26	cyclictest	0	-21	swapper/1	08:55:21	1
2915882	99	64	34,26	cyclictest	0	-21	swapper/1	11:55:40	1
2915882	99	64	31,29	cyclictest	2580942	-21	kworker/u4:5-rpciod	07:15:26	1
2915882	99	64	31,29	cyclictest	2580942	-21	kworker/u4:5-rpciod	07:15:26	1
2915882	99	64	28,34	cyclictest	2932645	-21	idleruntime-cro	08:15:00	1
2915882	99	63	40,20	cyclictest	2926821	-21	gltestperf	07:50:23	1
2915882	99	63	36,23	cyclictest	2948125	-21	/usr/sbin/munin	09:10:39	1
2915882	99	63	33,27	cyclictest	0	-21	swapper/1	10:30:39	1
2915882	99	63	33,26	cyclictest	0	-21	swapper/1	10:30:01	1
2915882	99	63	30,30	cyclictest	0	-21	swapper/1	11:10:17	1
2915882	99	62	52,7	cyclictest	2989723	-21	kworker/u4:4+events_unbound	09:59:40	1
2915882	99	62	37,23	cyclictest	2970793	-21	sed	09:35:43	1
2915882	99	62	31,27	cyclictest	0	-21	swapper/1	11:25:28	1
2915882	99	62	29,31	cyclictest	2960797	-21	sh	09:25:19	1
2915882	99	62	26,32	cyclictest	0	-21	swapper/1	09:40:16	1
2915882	99	61	29,29	cyclictest	0	-21	swapper/1	09:45:39	1
2915882	99	61	26,32	cyclictest	0	-21	swapper/1	10:20:29	1
2915882	99	61	26,32	cyclictest	0	-21	swapper/1	10:10:27	1
2915882	99	61	22,35	cyclictest	0	-21	swapper/1	12:20:13	1
2915880	99	61	54,5	cyclictest	2994232	-21	kworker/u4:7+events_unbound	10:04:42	0
2915880	99	61	48,5	cyclictest	3100660	-21	kworker/u4:9+events_unbound	12:25:01	0
2915882	99	60	53,5	cyclictest	0	-21	swapper/1	11:00:40	1
2915882	99	60	3,13	cyclictest	3050449	-21	ps	11:05:38	1
2915882	99	60	3,12	cyclictest	3085422	-21	grep	11:45:18	1
2915882	99	60	27,29	cyclictest	0	-21	swapper/1	09:50:24	1
2915882	99	60	11,13	cyclictest	3028173	-21	ssh	10:40:37	1
2915880	99	60	52,6	cyclictest	3011649	-21	kworker/u4:12+events_unbound	10:24:46	0
2915882	99	59	34,22	cyclictest	2991888	-21	aten_r7power_cu	10:00:16	1
2915882	99	59	28,28	cyclictest	0	-21	swapper/1	08:47:14	1
2915882	99	59	26,31	cyclictest	3062965	-21	aten_r7power_vo	11:20:17	1
2915882	99	59	25,32	cyclictest	3024007	-21	timerandwakeup	10:35:42	1
2915880	99	59	51,5	cyclictest	3098596	-21	aten_r7power_vo	12:00:18	0
2915882	99	58	28,27	cyclictest	0	-21	swapper/1	12:35:32	1
2915882	99	58	28,27	cyclictest	0	-21	swapper/1	12:00:39	1
2915882	99	58	28,27	cyclictest	0	-21	swapper/1	10:15:23	1
2915882	99	58	24,31	cyclictest	0	-21	swapper/1	07:20:16	1
2915882	99	58	16,39	cyclictest	0	-21	swapper/1	11:40:25	1
2915880	99	58	3,41	cyclictest	2921299	-21	/usr/sbin/munin	07:30:13	0
2915882	99	57	25,29	cyclictest	0	-21	swapper/1	08:35:11	1
2915882	99	57	25,28	cyclictest	0	-21	swapper/1	07:10:22	1
2915880	99	57	50,5	cyclictest	2917099	-21	kworker/u4:1+events_unbound	07:40:01	0
2915880	99	57	43,8	cyclictest	0	-21	swapper/0	11:48:25	0
2915882	99	56	25,28	cyclictest	0	-21	swapper/1	08:20:27	1
2915882	99	56	25,27	cyclictest	0	-21	swapper/1	08:05:17	1
2915882	99	56	24,29	cyclictest	2928669	-21	unixbench_multi	07:55:39	1
2915880	99	56	48,6	cyclictest	400	-21	systemd-logind	09:14:29	0
2915882	99	55	24,28	cyclictest	0	-21	swapper/1	07:10:01	1
2915882	99	55	2,13	cyclictest	2946205	-21	ntpq	09:05:29	1
2915882	99	55	18,33	cyclictest	0	-21	swapper/1	12:15:31	1
2915880	99	55	48,5	cyclictest	53	-21	kswapd0	11:20:14	0
2915882	99	54	24,28	cyclictest	0	-21	swapper/1	09:30:20	1
2915882	99	54	24,28	cyclictest	0	-21	swapper/1	09:30:19	1
2915882	99	54	24,26	cyclictest	0	-21	swapper/1	07:45:30	1
2915880	99	54	45,7	cyclictest	3020647	-21	kworker/u4:6+events_unbound	11:05:16	0
2915880	99	54	34,18	cyclictest	2960297	-21	latency_hist	09:25:01	0
2915882	99	53	23,27	cyclictest	0	-21	swapper/1	07:30:23	1
2915882	99	53	22,28	cyclictest	0	-21	swapper/1	08:25:38	1
2915882	99	53	22,27	cyclictest	0	-21	swapper/1	09:05:01	1
2915882	99	53	2,15	cyclictest	2924438	-21	ntpq	07:40:26	1
2915880	99	53	46,5	cyclictest	3020647	-21	kworker/u4:6+events_unbound	11:03:45	0
2915880	99	53	45,5	cyclictest	2935855	-21	/usr/sbin/munin	08:25:21	0
2915880	99	53	38,12	cyclictest	2974936	-21	open_files	09:40:36	0
2915882	99	52	43,7	cyclictest	2930076	-21	systemd	08:04:12	1
2915882	99	52	2,11	cyclictest	2920273	-21	fschecks_time	07:25:23	1
2915882	99	52	14,33	cyclictest	0	-21	swapper/1	08:35:02	1
2915880	99	52	44,6	cyclictest	3065096	-21	kworker/u4:11+events_unbound	11:35:35	0
2915880	99	52	34,13	cyclictest	0	-21	swapper/0	09:50:38	0
2915880	99	52	22,23	cyclictest	256	50	irq/23-42890000.ethernet	12:30:22	0
2915882	99	51	40,8	cyclictest	2942452	-21	ps	08:50:34	1
2915882	99	51	16,32	cyclictest	0	-21	swapper/1	08:15:17	1
2915880	99	51	45,5	cyclictest	2989723	-21	kworker/u4:4+events_unbound	10:25:02	0
2915880	99	51	43,5	cyclictest	2915877	-21	cyclictest	11:31:39	0
2915880	99	51	38,8	cyclictest	3124607	-21	ssh	12:29:45	0
2915880	99	51	34,15	cyclictest	2941556	-21	kworker/u4:13-rpciod	09:25:29	0
2915882	99	50	2,15	cyclictest	2923206	-21	ntpq	07:35:30	1
2915880	99	50	40,8	cyclictest	2932614	-21	systemd	08:14:14	0
2915880	99	50	34,6	cyclictest	3091602	-21	kworker/u4:4+events_unbound	11:55:10	0
2915880	99	50	32,16	cyclictest	3004786	-21	basename	10:15:00	0
2915880	99	49	42,5	cyclictest	3031512	-21	latency_hist	10:45:06	0
2915880	99	49	42,5	cyclictest	2930555	-21	fschecks_count	08:05:21	0
2915882	99	48	16,28	cyclictest	0	-21	swapper/1	08:40:16	1
2915880	99	48	40,6	cyclictest	3051559	-21	kworker/u4:5+events_unbound	11:14:59	0
2915880	99	48	38,8	cyclictest	2940297	-21	systemd	08:44:22	0
2915880	99	48	33,7	cyclictest	2949450	-21	kworker/u4:23+events_unbound	09:48:40	0
2915880	99	47	39,6	cyclictest	3123231	-21	kworker/u4:2+events_unbound	12:35:03	0
2915880	99	47	22,23	cyclictest	256	50	irq/23-42890000.ethernet	09:55:36	0
2915880	99	46	38,5	cyclictest	3089807	-21	basename	11:50:19	0
2915880	99	46	36,7	cyclictest	0	-21	swapper/0	10:35:33	0
2915880	99	45	5,28	cyclictest	3103722	-21	ntpq	12:05:34	0
2915880	99	45	38,5	cyclictest	2915877	-21	cyclictest	11:20:01	0
2915880	99	45	37,6	cyclictest	2946817	-21	latency_hist	09:10:02	0
2915880	99	44	35,6	cyclictest	0	-21	swapper/0	09:00:02	0
2915880	99	43	36,5	cyclictest	2940811	-21	fschecks_time	08:45:21	0
2915880	99	43	25,15	cyclictest	0	-21	swapper/0	08:15:20	0
2915880	99	42	34,5	cyclictest	2925354	-21	df_abs	07:45:16	0
2915880	99	42	32,7	cyclictest	2929868	-21	timerandwakeup	08:00:39	0
2915880	99	39	19,7	cyclictest	17	1	rcu_preempt	08:50:30	0
2915880	99	38	4,28	cyclictest	2928798	-21	modprobe	08:00:00	0
2915880	99	37	30,5	cyclictest	2917101	-21	kworker/u4:8+events_unbound	07:17:01	0
2915880	99	37	30,5	cyclictest	2917101	-21	kworker/u4:8+events_unbound	07:17:01	0
2915880	99	29	6,5	cyclictest	15	1	ktimers/0	07:10:01	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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