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 376 highest latencies:

System rack7slot2.osadl.org (updated Thu Jul 16, 2026 00:44:08)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2753424	99	103	39,11	cyclictest	2754931	-21	apt-get	19:15:18	0
2753425	99	101	85,6	cyclictest	2872638	-21	kworker/u4:17+events_unbound	22:51:30	1
2753425	99	94	87,5	cyclictest	2899267	-21	kworker/u4:0+events_unbound	23:31:35	1
2753425	99	93	84,6	cyclictest	2777854	-21	kworker/u4:20+events_unbound	20:56:05	1
2753424	99	92	50,20	cyclictest	53	-21	kswapd0	23:30:11	0
2753424	99	88	49,18	cyclictest	53	-21	kswapd0	22:15:13	0
2753425	99	85	74,9	cyclictest	2939238	-21	kworker/u4:5+events_unbound	00:03:22	1
2753424	99	84	76,6	cyclictest	2854661	-21	kworker/u4:4+events_unbound	23:01:32	0
2753425	99	83	72,6	cyclictest	2916714	-21	kworker/u4:2+events_unbound	23:41:37	1
2753425	99	81	74,5	cyclictest	2965659	-21	kworker/u4:3+events_unbound	00:33:40	1
2753424	99	76	68,6	cyclictest	2885567	-21	kworker/u4:7+events_unbound	23:06:30	0
2753424	99	75	67,6	cyclictest	2777854	-21	kworker/u4:20+events_unbound	21:11:09	0
2753425	99	73	63,5	cyclictest	2854659	-21	kworker/u4:2+events_unbound	22:41:27	1
2753424	99	71	62,7	cyclictest	2791262	-21	kworker/u4:2+events_unbound	21:21:12	0
2753425	99	69	61,5	cyclictest	2768810	-21	kworker/u4:14+events_unbound	21:16:10	1
2753424	99	69	61,5	cyclictest	2836534	-21	kworker/u4:1+events_unbound	22:31:26	0
2753424	99	66	59,5	cyclictest	2965657	-21	kworker/u4:1+events_unbound	00:38:42	0
2753425	99	65	56,6	cyclictest	2939236	-21	kworker/u4:3+events_unbound	00:23:37	1
2753425	99	65	53,8	cyclictest	0	-21	swapper/1	22:00:14	1
2753424	99	65	56,6	cyclictest	2513333	-21	kworker/u4:6+events_unbound	19:25:47	0
2753425	99	64	56,6	cyclictest	2836537	-21	kworker/u4:6+events_unbound	22:16:24	1
2753425	99	64	56,6	cyclictest	2782955	-21	kworker/u4:0+events_unbound	21:06:08	1
2753425	99	64	56,6	cyclictest	2764972	-21	kworker/u4:0+events_unbound	20:15:58	1
2753425	99	64	52,8	cyclictest	53	-21	kswapd0	00:20:00	1
2753425	99	63	56,5	cyclictest	2752154	-21	kworker/u4:7+events_unbound	20:00:54	1
2753425	99	63	53,7	cyclictest	2903806	-21	kworker/u4:3+events_unbound	23:25:02	1
2753424	99	63	48,7	cyclictest	2766243	-21	kworker/u4:6+events_unbound	20:15:01	0
2753424	99	63	48,7	cyclictest	2766243	-21	kworker/u4:6+events_unbound	20:15:00	0
2753425	99	62	56,4	cyclictest	2845677	-21	kworker/u4:8+events_unbound	22:30:02	1
2753425	99	61	47,8	cyclictest	0	-21	swapper/1	00:05:40	1
2753424	99	61	52,7	cyclictest	2836537	-21	kworker/u4:6+events_unbound	22:11:23	0
2753425	99	60	52,6	cyclictest	2916714	-21	kworker/u4:2+events_unbound	23:58:17	1
2753425	99	58	50,6	cyclictest	2766244	-21	kworker/u4:8+events_unbound	20:50:02	1
2753424	99	58	50,6	cyclictest	2894686	-21	kworker/u4:9+events_unbound	23:16:33	0
2753424	99	58	47,9	cyclictest	2954200	-21	ssh	00:20:01	0
2753424	99	58	42,12	cyclictest	53	-21	kswapd0	22:45:08	0
2753425	99	57	49,6	cyclictest	2915715	-21	timerandwakeup	23:35:40	1
2753425	99	57	44,9	cyclictest	2780014	-21	ps	20:50:38	1
2753425	99	57	43,10	cyclictest	0	-21	swapper/1	22:05:12	1
2753424	99	57	28,22	cyclictest	256	50	irq/23-42890000.ethernet	22:50:09	0
2753425	99	56	49,5	cyclictest	2749717	-21	kworker/u4:3+events_unbound	19:30:48	1
2753425	99	56	49,5	cyclictest	2513333	-21	kworker/u4:6+events_unbound	19:25:01	1
2753424	99	56	49,5	cyclictest	2943748	-21	kworker/u4:12+events_unbound	00:08:31	0
2753424	99	56	48,6	cyclictest	2773927	-21	kworker/u4:5+events_unbound	20:31:01	0
2753425	99	55	47,6	cyclictest	2749717	-21	kworker/u4:3+events_unbound	19:10:45	1
2753424	99	55	44,8	cyclictest	2821058	-21	df_abs	21:50:17	0
2753424	99	55	40,7	cyclictest	2789094	-21	ssh	21:15:12	0
2753425	99	54	36,7	cyclictest	2805111	-21	kworker/u4:8+events_unbound	21:37:47	1
2753424	99	54	45,7	cyclictest	2812228	-21	tail	21:40:23	0
2753424	99	54	37,15	cyclictest	2927600	-21	munin-run	23:50:01	0
2753425	99	53	45,6	cyclictest	2894686	-21	kworker/u4:9+events_unbound	23:17:00	1
2753425	99	53	41,8	cyclictest	0	-21	swapper/1	22:20:40	1
2753424	99	53	46,5	cyclictest	2736954	-21	kworker/u4:15+events_unbound	19:35:50	0
2753424	99	53	45,6	cyclictest	2961144	-21	kworker/u4:16+events_unbound	00:28:37	0
2753424	99	53	42,8	cyclictest	53	-21	kswapd0	23:55:00	0
2753424	99	53	24,26	cyclictest	256	50	irq/23-42890000.ethernet	00:20:11	0
2753425	99	52	42,6	cyclictest	0	-21	swapper/1	23:00:34	1
2753424	99	52	45,5	cyclictest	2762464	-21	idleruntime-cro	19:45:00	0
2753424	99	52	43,6	cyclictest	2946817	-21	timerwakeupswit	00:10:41	0
2753425	99	51	44,5	cyclictest	2757320	-21	kworker/u4:13+events_unbound	19:50:52	1
2753425	99	51	43,6	cyclictest	2766244	-21	kworker/u4:8+events_unbound	20:20:57	1
2753425	99	51	40,7	cyclictest	0	-21	swapper/1	22:11:21	1
2753425	99	51	39,8	cyclictest	2825489	-21	aten_r7power_vo	21:55:16	1
2753424	99	51	42,5	cyclictest	2920187	-21	/usr/sbin/munin	23:40:41	0
2753425	99	50	42,6	cyclictest	2965657	-21	kworker/u4:1+events_unbound	00:37:46	1
2753425	99	50	38,7	cyclictest	2894685	-21	kworker/u4:8-rpciod	23:30:00	1
2753425	99	50	36,5	cyclictest	2752154	-21	kworker/u4:7+events_unbound	20:10:56	1
2753425	99	50	36,5	cyclictest	2752154	-21	kworker/u4:7+events_unbound	20:10:56	1
2753424	99	50	44,4	cyclictest	2816362	-21	/usr/sbin/munin	21:45:16	0
2753424	99	50	42,5	cyclictest	2753981	-21	gltestperf	19:10:20	0
2753424	99	50	40,7	cyclictest	2906927	-21	unixbench-2d	23:25:41	0
2753424	99	50	39,7	cyclictest	2901260	-21	dpkg	23:20:12	0
2753425	99	49	43,4	cyclictest	0	-21	swapper/1	19:15:44	1
2753425	99	49	42,5	cyclictest	2888791	-21	mailstats	23:05:39	1
2753425	99	49	41,5	cyclictest	2892756	-21	gltestperf	23:10:20	1
2753425	99	49	41,5	cyclictest	2766244	-21	kworker/u4:8+events_unbound	20:10:02	1
2753425	99	49	39,6	cyclictest	2798869	-21	ntpq	21:25:25	1
2753425	99	49	35,6	cyclictest	2775200	-21	kworker/u4:13+events_unbound	21:22:45	1
2753424	99	49	42,5	cyclictest	2803281	-21	/usr/sbin/munin	21:30:22	0
2753424	99	49	42,5	cyclictest	2773929	-21	kworker/u4:10+events_unbound	20:45:01	0
2753424	99	49	42,5	cyclictest	2768129	-21	gltestperf	20:05:19	0
2753424	99	49	31,8	cyclictest	2766243	-21	kworker/u4:6-rpciod	20:20:00	0
2753425	99	48	41,5	cyclictest	2850202	-21	kworker/u4:10+events_unbound	22:45:47	1
2753425	99	48	41,5	cyclictest	2803831	-21	timerandwakeup	21:30:40	1
2753425	99	48	37,8	cyclictest	2816698	-21	tail	21:45:20	1
2753425	99	48	36,8	cyclictest	2760193	-21	aten_r7power_vo	19:35:16	1
2753425	99	48	32,7	cyclictest	2916714	-21	kworker/u4:2+events_unbound	23:46:06	1
2753425	99	48	32,6	cyclictest	2768810	-21	kworker/u4:14+events_unbound	21:00:22	1
2753424	99	48	40,5	cyclictest	2963937	-21	/usr/sbin/munin	00:30:23	0
2753425	99	47	37,7	cyclictest	2853558	-21	unixbench_singl	22:25:42	1
2753425	99	47	37,7	cyclictest	0	-21	swapper/1	00:25:29	1
2753425	99	47	36,8	cyclictest	2945968	-21	fschecks_count	00:10:21	1
2753424	99	47	41,5	cyclictest	2830803	-21	/usr/sbin/munin	22:00:39	0
2753424	99	47	41,4	cyclictest	2937243	-21	gltestperf	00:00:21	0
2753424	99	47	39,6	cyclictest	2773927	-21	kworker/u4:5+events_unbound	20:36:01	0
2753424	99	47	39,5	cyclictest	2766490	-21	grep	20:00:16	0
2753424	99	47	38,7	cyclictest	2774006	-21	latency_hist	20:30:02	0
2753425	99	46	39,5	cyclictest	2784261	-21	diskmemload	23:52:21	1
2753424	99	46	39,5	cyclictest	2936457	-21	idleruntime-cro	00:00:00	0
2753424	99	46	39,5	cyclictest	2764236	-21	fschecks_time	19:50:20	0
2753424	99	46	37,6	cyclictest	2825726	-21	fschecks_time	21:55:21	0
2753424	99	46	27,16	cyclictest	0	-21	swapper/0	23:35:36	0
2753425	99	45	38,5	cyclictest	2879867	-21	timerandwakeup	22:55:38	1
2753425	99	45	36,7	cyclictest	2822554	-21	systemd	21:51:17	1
2753425	99	45	35,7	cyclictest	2862070	-21	sendmail_mailst	22:35:39	1
2753425	99	45	29,6	cyclictest	2768810	-21	kworker/u4:14+events_unbound	21:14:44	1
2753424	99	45	37,5	cyclictest	2854659	-21	kworker/u4:2-rpciod	22:40:40	0
2753424	99	45	37,5	cyclictest	2802407	-21	cut	21:30:01	0
2753424	99	45	37,5	cyclictest	2780898	-21	fschecks_time	20:55:20	0
2753424	99	45	36,6	cyclictest	2879697	-21	proc_pri	22:55:36	0
2753424	99	45	36,6	cyclictest	2782273	-21	gltestperf	21:00:17	0
2753425	99	44	35,6	cyclictest	2776724	-21	latency_hist	20:40:01	1
2753424	99	44	36,6	cyclictest	2831972	-21	kworker/u4:8+events_unbound	22:06:21	0
2753425	99	43	36,4	cyclictest	2761546	-21	df_abs	19:40:16	1
2753425	99	43	32,8	cyclictest	2774331	-21	df_abs	20:30:16	1
2753425	99	43	32,7	cyclictest	0	-21	swapper/1	21:40:24	1
2753424	99	43	36,5	cyclictest	2896571	-21	latency_hist	23:15:05	0
2753424	99	43	36,5	cyclictest	2853220	-21	processes	22:25:40	0
2753424	99	43	26,14	cyclictest	2807722	-21	grep	21:35:23	0
2753425	99	42	32,6	cyclictest	2776908	-21	aten_r7power_vo	20:40:15	1
2753424	99	42	36,4	cyclictest	2861556	-21	tail	22:35:20	0
2753424	99	42	35,5	cyclictest	2845675	-21	kworker/u4:4-rpciod	22:20:26	0
2753424	99	42	34,6	cyclictest	2779442	-21	aten_r7power_vo	20:50:18	0
2753424	99	42	34,5	cyclictest	2783544	-21	gltestperf	21:05:22	0
2753424	99	42	33,6	cyclictest	0	-21	swapper/0	20:45:35	0
2753424	99	42	32,8	cyclictest	2772280	-21	grep	20:20:36	0
2753425	99	41	32,6	cyclictest	2766080	-21	timerwakeupswit	19:55:38	1
2753425	99	41	32,6	cyclictest	2766080	-21	timerwakeupswit	19:55:37	1
2753424	99	41	33,5	cyclictest	2763447	-21	cat	19:45:36	0
2753425	99	40	26,10	cyclictest	0	-21	swapper/1	20:25:16	1
2753424	99	40	33,5	cyclictest	2765290	-21	aten_r7power_vo	19:55:15	0
2753424	99	40	33,5	cyclictest	2765290	-21	aten_r7power_vo	19:55:15	0
2753424	99	40	32,5	cyclictest	2758597	-21	kworker/u4:12+rpciod	19:30:20	0
2753425	99	39	27,8	cyclictest	0	-21	swapper/1	19:45:37	1
2753424	99	39	30,6	cyclictest	2756539	-21	fschecks_time	19:20:23	0
2753425	99	38	28,7	cyclictest	2753459	-21	latency_hist	19:10:01	1
2753425	99	37	29,5	cyclictest	2749717	-21	kworker/u4:3+rpciod	19:25:36	1
2753424	99	34	25,6	cyclictest	0	-21	swapper/0	19:10:00	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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