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 all highest latencies:

System rack7slot2.osadl.org (updated Mon Aug 03, 2026 12:44:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2678988	99	107	99,6	cyclictest	2805649	-21	kworker/u4:2+events_unbound	11:05:42	0
2678989	99	101	92,7	cyclictest	2880410	-21	kworker/u4:2+events_unbound	12:25:54	1
2678988	99	101	93,6	cyclictest	2845324	-21	kworker/u4:6+events_unbound	11:45:50	0
2678989	99	100	93,5	cyclictest	2822879	-21	kworker/u4:7+events_unbound	11:30:49	1
2678989	99	100	93,5	cyclictest	2822879	-21	kworker/u4:7+events_unbound	11:30:48	1
2678988	99	98	90,6	cyclictest	2681482	-21	kworker/u4:15+events_unbound	07:34:57	0
2678989	99	95	90,3	cyclictest	2703387	-21	kworker/u4:1+events_unbound	08:50:22	1
2678988	99	94	76,5	cyclictest	2757289	-21	kworker/u4:4+events_unbound	11:10:44	0
2678989	99	93	86,5	cyclictest	2684056	-21	kworker/u4:5+events_unbound	07:29:56	1
2678988	99	93	86,5	cyclictest	2849800	-21	kworker/u4:2+events_unbound	12:00:53	0
2678989	99	91	83,5	cyclictest	2743609	-21	kworker/u4:10+events_unbound	10:20:36	1
2678989	99	88	81,5	cyclictest	2734483	-21	kworker/u4:1+events_unbound	09:40:31	1
2678988	99	88	81,5	cyclictest	2678914	-21	kworker/u4:4+events_unbound	07:44:58	0
2678988	99	87	80,5	cyclictest	2681479	-21	kworker/u4:12+events_unbound	07:19:53	0
2678989	99	84	76,6	cyclictest	2680207	-21	kworker/u4:6+events_unbound	08:15:09	1
2678989	99	83	75,6	cyclictest	2684056	-21	kworker/u4:5+events_unbound	08:00:03	1
2678989	99	83	75,6	cyclictest	2665844	-21	kworker/u4:8+events_unbound	07:24:55	1
2678988	99	83	76,5	cyclictest	2700823	-21	kworker/u4:5+events_unbound	08:40:20	0
2678989	99	80	73,5	cyclictest	2678915	-21	kworker/u4:5+events_unbound	07:14:53	1
2678989	99	80	72,6	cyclictest	2880409	-21	kworker/u4:0+events_unbound	12:30:55	1
2678989	99	80	72,6	cyclictest	2880409	-21	kworker/u4:0+events_unbound	12:30:55	1
2678989	99	76	69,5	cyclictest	2695709	-21	kworker/u4:20+events_unbound	08:35:18	1
2678988	99	73	61,9	cyclictest	2704658	-21	kworker/u4:8+events_unbound	08:55:22	0
2678988	99	73	61,9	cyclictest	2704658	-21	kworker/u4:8+events_unbound	08:55:21	0
2678989	99	71	53,11	cyclictest	2789778	-21	modprobe	10:40:00	1
2678989	99	70	62,6	cyclictest	53	-21	kswapd0	10:00:33	1
2678988	99	69	52,9	cyclictest	2789779	-21	kworker/u4:16	10:40:01	0
2678989	99	66	52,5	cyclictest	2752710	-21	kworker/u4:1+events_unbound	10:05:15	1
2678989	99	64	57,5	cyclictest	2717037	-21	kworker/u4:0+events_unbound	09:35:02	1
2678989	99	63	51,6	cyclictest	2699551	-21	kworker/u4:0+events_unbound	08:45:01	1
2678989	99	62	46,5	cyclictest	2822877	-21	kworker/u4:5+events_unbound	11:40:55	1
2678989	99	60	50,8	cyclictest	53	-21	kswapd0	12:20:14	1
2678988	99	59	48,5	cyclictest	2734483	-21	kworker/u4:1+events_unbound	09:41:45	0
2678988	99	59	39,17	cyclictest	0	-21	swapper/0	10:30:37	0
2678989	99	56	49,5	cyclictest	2677706	-21	kworker/u4:11+events_unbound	07:40:00	1
2678989	99	56	46,7	cyclictest	2739731	-21	kworker/u4:0-rpciod	09:45:31	1
2678988	99	56	44,7	cyclictest	2825070	-21	apt-config	11:20:00	0
2678988	99	56	36,17	cyclictest	53	-21	kswapd0	10:05:08	0
2678988	99	56	31,23	cyclictest	2694932	-21	fschecks_time	08:10:19	0
2678989	99	55	45,8	cyclictest	378	-21	dbus-daemon	09:15:28	1
2678989	99	55	40,7	cyclictest	2796725	-21	kworker/u4:3+events_unbound	11:11:59	1
2678988	99	55	48,5	cyclictest	2835003	-21	/usr/sbin/munin	11:30:33	0
2678988	99	55	48,5	cyclictest	2835003	-21	/usr/sbin/munin	11:30:32	0
2678988	99	55	48,5	cyclictest	2764662	-21	ntpq	10:10:34	0
2678989	99	54	44,8	cyclictest	2813469	-21	systemd	11:05:43	1
2678988	99	54	46,6	cyclictest	2726135	-21	kworker/u4:12+events_unbound	09:30:01	0
2678989	99	53	46,5	cyclictest	2808999	-21	ssh	11:00:42	1
2678989	99	53	44,7	cyclictest	2874135	-21	fschecks_count	12:15:21	1
2678989	99	53	43,4	cyclictest	2695709	-21	kworker/u4:20+events_unbound	08:55:02	1
2678989	99	53	43,4	cyclictest	2695709	-21	kworker/u4:20+events_unbound	08:55:01	1
2678989	99	53	41,10	cyclictest	2865392	-21	/usr/sbin/munin	12:05:20	1
2678989	99	53	41,10	cyclictest	2691968	-21	sshd	08:00:02	1
2678989	99	53	38,9	cyclictest	2831859	-21	kworker/u4:0-rpciod	11:27:18	1
2678988	99	53	47,4	cyclictest	2809015	-21	unixbench_multi	11:00:42	0
2678988	99	53	46,5	cyclictest	2719902	-21	/usr/sbin/munin	09:20:27	0
2678988	99	53	46,5	cyclictest	2665844	-21	kworker/u4:8+events_unbound	07:10:01	0
2678988	99	53	41,6	cyclictest	2704658	-21	kworker/u4:8+events_unbound	09:00:02	0
2678988	99	53	36,15	cyclictest	2769268	-21	diskmemload	10:15:38	0
2678988	99	53	32,4	cyclictest	0	-21	swapper/0	11:35:33	0
2678989	99	52	45,4	cyclictest	2870053	-21	ntp_kernel_err	12:10:26	1
2678989	99	52	42,8	cyclictest	2699552	-21	kworker/u4:3-rpciod	08:30:01	1
2678989	99	52	39,5	cyclictest	2694438	-21	kworker/u4:19+events_unbound	08:10:04	1
2678988	99	52	45,5	cyclictest	2807414	-21	ssh	11:00:01	0
2678988	99	52	44,6	cyclictest	2867039	-21	kworker/u4:1+events_unbound	12:16:46	0
2678988	99	52	34,13	cyclictest	53	-21	kswapd0	11:55:10	0
2678988	99	52	31,12	cyclictest	0	-21	swapper/0	11:25:00	0
2678989	99	51	45,4	cyclictest	2704659	-21	kworker/u4:9+events_unbound	09:20:03	1
2678989	99	51	42,6	cyclictest	2694282	-21	timerwakeupswit	08:05:42	1
2678989	99	51	37,5	cyclictest	2694438	-21	kworker/u4:19+events_unbound	08:20:01	1
2678988	99	51	43,5	cyclictest	2732319	-21	latency_hist	09:35:01	0
2678988	99	51	33,4	cyclictest	0	-21	swapper/0	12:25:00	0
2678989	99	50	42,5	cyclictest	2825992	-21	/usr/sbin/munin	11:20:27	1
2678989	99	50	36,9	cyclictest	2743609	-21	kworker/u4:10-rpciod	09:55:16	1
2678988	99	50	43,5	cyclictest	2688407	-21	fschecks_time	07:45:20	0
2678988	99	50	43,5	cyclictest	2678986	-21	cyclictest	09:57:50	0
2678989	99	49	40,7	cyclictest	2814609	-21	kworker/u4:11+events_unbound	11:16:14	1
2678989	99	49	37,8	cyclictest	37	-21	kcompactd0	11:58:30	1
2678988	99	49	43,4	cyclictest	0	-21	swapper/0	11:50:30	0
2678988	99	49	42,5	cyclictest	2882971	-21	fschecks_time	12:25:20	0
2678988	99	49	42,5	cyclictest	2743609	-21	kworker/u4:10+events_unbound	09:47:15	0
2678988	99	49	42,5	cyclictest	2732616	-21	aten2__	09:35:16	0
2678988	99	49	42,5	cyclictest	2710341	-21	aten_r7power_po	09:10:17	0
2678988	99	49	41,6	cyclictest	2796727	-21	kworker/u4:6+events_unbound	10:50:03	0
2678988	99	49	32,15	cyclictest	0	-21	swapper/0	12:30:19	0
2678988	99	49	32,15	cyclictest	0	-21	swapper/0	12:30:19	0
2678989	99	48	41,5	cyclictest	2892463	-21	timerandwakeup	12:35:40	1
2678989	99	48	38,7	cyclictest	2790465	-21	fschecks_count	10:40:20	1
2678989	99	48	37,9	cyclictest	2795846	-21	sh	10:45:42	1
2678989	99	48	37,6	cyclictest	0	-21	swapper/1	09:05:00	1
2678989	99	48	28,5	cyclictest	2708496	-21	kworker/u4:5+events_unbound	09:12:57	1
2678988	99	48	43,3	cyclictest	0	-21	swapper/0	12:10:53	0
2678988	99	48	37,9	cyclictest	2696230	-21	fschecks_time	08:15:19	0
2678988	99	48	37,8	cyclictest	2746374	-21	tune2fs	09:50:19	0
2678988	99	48	37,8	cyclictest	2746374	-21	tune2fs	09:50:19	0
2678989	99	47	40,5	cyclictest	2733370	-21	ld	09:35:31	1
2678989	99	47	39,6	cyclictest	2747274	-21	unixbench-2d	09:50:42	1
2678989	99	47	39,6	cyclictest	2747274	-21	unixbench-2d	09:50:41	1
2678989	99	47	38,6	cyclictest	0	-21	swapper/1	12:00:30	1
2678989	99	47	21,8	cyclictest	2845324	-21	kworker/u4:6+events_unbound	11:50:35	1
2678988	99	47	41,4	cyclictest	2843310	-21	fschecks_count	11:40:19	0
2678988	99	47	40,5	cyclictest	2773355	-21	ssh	10:20:35	0
2678988	99	47	40,5	cyclictest	0	-21	swapper/0	10:40:40	0
2678988	99	47	39,6	cyclictest	2690472	-21	systemd	07:55:00	0
2678988	99	47	39,5	cyclictest	0	-21	swapper/0	10:45:32	0
2678988	99	47	38,3	cyclictest	2681481	-21	kworker/u4:14+events_unbound	08:53:47	0
2678989	99	46	39,5	cyclictest	2842722	-21	wc	11:40:01	1
2678989	99	46	38,5	cyclictest	2724137	-21	gltestperf	09:25:22	1
2678989	99	46	37,6	cyclictest	2764703	-21	sshd	10:10:35	1
2678989	99	46	36,7	cyclictest	0	-21	swapper/1	11:45:29	1
2678988	99	46	38,6	cyclictest	2681976	-21	fschecks_count	07:20:20	0
2678988	99	46	38,5	cyclictest	2701286	-21	fschecks_count	08:35:18	0
2678988	99	46	37,7	cyclictest	2716014	-21	sed	09:15:41	0
2678988	99	46	33,10	cyclictest	2698130	-21	ls	08:20:42	0
2678989	99	45	37,6	cyclictest	2787788	-21	kworker/u4:16+events_unbound	10:55:02	1
2678989	99	45	37,6	cyclictest	2777374	-21	gltestperf	10:25:20	1
2678989	99	45	36,7	cyclictest	2781775	-21	gltestperf	10:30:21	1
2678989	99	45	36,7	cyclictest	2685340	-21	systemd	07:34:56	1
2678988	99	45	37,6	cyclictest	2777848	-21	proc_pri	10:25:36	0
2678988	99	45	36,7	cyclictest	2686597	-21	kworker/u4:17-rpciod	07:36:56	0
2678988	99	45	31,9	cyclictest	2756109	-21	ls	10:00:40	0
2678988	99	45	19,13	cyclictest	15	1	ktimers/0	11:25:29	0
2678989	99	44	38,4	cyclictest	2699780	-21	aten2__	08:30:17	1
2678989	99	44	38,4	cyclictest	2699780	-21	aten2__	08:30:17	1
2678989	99	44	35,7	cyclictest	0	-21	swapper/1	08:45:21	1
2678989	99	44	35,6	cyclictest	0	-21	swapper/1	09:05:26	1
2678989	99	44	25,13	cyclictest	2800366	-21	ssh	10:50:52	1
2678988	99	44	34,8	cyclictest	2865065	-21	aten_r7power_en	12:05:16	0
2678988	99	44	32,7	cyclictest	0	-21	swapper/0	08:30:27	0
2678988	99	44	32,7	cyclictest	0	-21	swapper/0	08:30:26	0
2678989	99	43	36,5	cyclictest	2688834	-21	sendmail_mailqu	07:45:36	1
2678989	99	43	27,8	cyclictest	2769121	-21	ssh	10:15:34	1
2678988	99	43	37,4	cyclictest	2691976	-21	latency_hist	08:00:02	0
2678988	99	43	36,5	cyclictest	2699584	-21	latency_hist	08:30:01	0
2678988	99	43	36,5	cyclictest	2693607	-21	fschecks_count	08:05:24	0
2678988	99	42	36,4	cyclictest	0	-21	swapper/0	07:29:54	0
2678988	99	42	34,5	cyclictest	0	-21	swapper/0	09:05:24	0
2678988	99	42	33,7	cyclictest	2891791	-21	gltestperf	12:35:20	0
2678989	99	41	34,5	cyclictest	2690536	-21	latency_hist	07:55:01	1
2678988	99	41	16,21	cyclictest	15	1	ktimers/0	08:00:34	0
2678989	99	40	22,5	cyclictest	17	1	rcu_preempt	07:40:19	1
2678989	99	40	20,12	cyclictest	17	1	rcu_preempt	07:15:16	1
2678989	99	38	20,5	cyclictest	17	1	rcu_preempt	07:10:01	1
2678988	99	38	13,4	cyclictest	17	1	rcu_preempt	08:45:20	0
2678988	99	35	29,4	cyclictest	2679087	-21	latency_hist	07:10:02	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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