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 100 highest latencies:

System rack7slot2.osadl.org (updated Fri Sep 04, 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
2681426	99	102	92,7	cyclictest	2777033	-21	kworker/u4:0+events_unbound	22:23:07	0
2681427	99	99	35,50	cyclictest	0	-21	swapper/1	22:20:37	1
2681426	99	96	88,6	cyclictest	2861625	-21	kworker/u4:12+events_unbound	23:58:25	0
2681426	99	90	84,4	cyclictest	2764200	-21	kworker/u4:18+events_unbound	22:18:05	0
2681426	99	89	82,5	cyclictest	2728355	-21	kworker/u4:14+events_unbound	21:32:55	0
2681426	99	85	29,46	cyclictest	53	-21	kswapd0	23:45:09	0
2681426	99	84	78,4	cyclictest	2857174	-21	kworker/u4:5+events_unbound	23:53:24	0
2681427	99	82	35,29	cyclictest	0	-21	swapper/1	22:35:35	1
2681426	99	82	74,6	cyclictest	2782152	-21	kworker/u4:4+events_unbound	22:28:07	0
2681426	99	79	71,6	cyclictest	2755839	-21	kworker/u4:13+events_unbound	21:58:02	0
2681426	99	77	71,4	cyclictest	15	1	ktimers/0	23:01:58	0
2681426	99	75	68,5	cyclictest	2695617	-21	kworker/u4:5+events_unbound	20:02:38	0
2681426	99	71	64,5	cyclictest	2874369	-21	kworker/u4:7+events_unbound	00:38:31	0
2681427	99	70	2,15	cyclictest	2880053	-21	ssh	00:18:38	1
2681426	99	70	62,6	cyclictest	2746703	-21	kworker/u4:4+events_unbound	21:48:01	0
2681427	99	69	2,14	cyclictest	2725449	-21	ssh	21:24:20	1
2681426	99	69	25,38	cyclictest	256	50	irq/23-42890000.ethernet	20:50:12	0
2681427	99	68	37,27	cyclictest	2681767	-21	sed	19:10:16	1
2681427	99	68	13,33	cyclictest	2800899	-21	ssh	22:48:51	1
2681426	99	68	60,6	cyclictest	2670078	-21	kworker/u4:3+events_unbound	19:27:32	0
2681426	99	68	47,15	cyclictest	2813053	-21	kworker/u4:1+events_unbound	23:23:20	0
2681426	99	68	38,22	cyclictest	0	-21	swapper/0	22:50:01	0
2681427	99	67	23,26	cyclictest	0	-21	swapper/1	21:25:38	1
2681427	99	65	35,28	cyclictest	2846668	-21	if_eth0	23:40:21	1
2681427	99	65	35,28	cyclictest	2846668	-21	if_eth0	23:40:21	1
2681427	99	64	57,5	cyclictest	2690327	-21	kworker/u4:3+events_unbound	20:45:02	1
2681427	99	64	5,52	cyclictest	2717189	-21	ssh	21:15:14	1
2681427	99	64	35,25	cyclictest	0	-21	swapper/1	00:05:30	1
2681427	99	64	30,32	cyclictest	2757892	-21	ssh	22:00:25	1
2681427	99	64	2,6	cyclictest	2740735	-21	ps	21:40:42	1
2681427	99	63	3,39	cyclictest	2845411	-21	ssh	23:39:25	1
2681427	99	63	33,28	cyclictest	2863743	-21	aten2__	00:00:15	1
2681427	99	63	33,28	cyclictest	2816549	-21	grep	23:05:40	1
2681426	99	63	56,5	cyclictest	2861625	-21	kworker/u4:12+events_unbound	00:23:28	0
2681427	99	62	2,56	cyclictest	2894440	-21	apt-get	00:35:16	1
2681426	99	62	54,6	cyclictest	2831002	-21	kworker/u4:7+events_unbound	23:28:20	0
2681427	99	61	33,26	cyclictest	2744569	-21	fschecks_count	21:45:18	1
2681427	99	61	27,32	cyclictest	2855611	-21	sh	23:50:30	1
2681427	99	61	26,32	cyclictest	0	-21	swapper/1	21:30:46	1
2681427	99	61	23,34	cyclictest	2831001	-21	kworker/u4:6+rpciod	23:25:02	1
2681426	99	61	53,6	cyclictest	2892239	-21	kworker/u4:5+events_unbound	00:33:30	0
2681427	99	60	3,52	cyclictest	2771225	-21	df_inode	22:15:17	1
2681427	99	60	2,8	cyclictest	2753267	-21	apt-get	21:55:20	1
2681427	99	60	28,29	cyclictest	2833123	-21	ssh	23:25:19	1
2681427	99	60	27,30	cyclictest	0	-21	swapper/1	00:30:14	1
2681427	99	60	2,20	cyclictest	2766599	-21	ssh	22:10:17	1
2681427	99	59	48,8	cyclictest	53	-21	kswapd0	00:15:01	1
2681427	99	59	34,23	cyclictest	2838662	-21	vmstat	23:30:46	1
2681427	99	59	31,25	cyclictest	2857174	-21	kworker/u4:5-rpciod	23:55:36	1
2681427	99	59	3,10	cyclictest	2797229	-21	ssh	22:45:00	1
2681427	99	59	29,28	cyclictest	2762704	-21	tail	22:05:26	1
2681427	99	59	29,27	cyclictest	2811474	-21	/usr/sbin/munin	23:00:24	1
2681427	99	59	2,13	cyclictest	2806618	-21	ssh	22:55:16	1
2681427	99	59	18,37	cyclictest	2854609	-21	munin-run	23:50:00	1
2681426	99	59	48,8	cyclictest	378	-21	dbus-daemon	20:57:46	0
2681427	99	58	30,25	cyclictest	0	-21	swapper/1	21:12:49	1
2681427	99	58	2,9	cyclictest	2707955	-21	ntpq	20:50:29	1
2681427	99	58	2,7	cyclictest	1073	-21	snmpd	20:45:12	1
2681427	99	58	26,29	cyclictest	0	-21	swapper/1	22:50:41	1
2681427	99	58	26,29	cyclictest	0	-21	swapper/1	22:50:40	1
2681427	99	58	25,31	cyclictest	0	-21	swapper/1	21:50:22	1
2681427	99	58	1,14	cyclictest	2780552	-21	ntpq	22:25:31	1
2681427	99	57	29,25	cyclictest	0	-21	swapper/1	22:30:34	1
2681427	99	57	2,10	cyclictest	2881242	-21	apt-get	00:20:11	1
2681426	99	57	31,13	cyclictest	0	-21	swapper/0	00:05:29	0
2681427	99	56	3,6	cyclictest	2691118	-21	ntpq	19:45:28	1
2681427	99	56	3,48	cyclictest	2704100	-21	ntpq	20:35:30	1
2681427	99	56	2,13	cyclictest	2696284	-21	irqstats	20:05:26	1
2681427	99	56	12,42	cyclictest	2700544	-21	sed	20:20:39	1
2681427	99	56	1,14	cyclictest	2824054	-21	ssh	23:15:14	1
2681427	99	55	4,47	cyclictest	2886411	-21	sh	00:25:30	1
2681427	99	55	2,7	cyclictest	2684716	-21	ntpq	19:20:28	1
2681427	99	55	24,27	cyclictest	0	-21	swapper/1	20:20:01	1
2681426	99	55	45,6	cyclictest	2886352	-21	ntpq	00:25:27	0
2681426	99	55	40,5	cyclictest	2686501	-21	kworker/u4:2+events_unbound	19:35:00	0
2681427	99	54	6,43	cyclictest	2703353	-21	latency_hist	20:35:01	1
2681427	99	54	3,9	cyclictest	2820591	-21	ntpq	23:10:41	1
2681427	99	54	3,6	cyclictest	2683488	-21	ntpq	19:15:31	1
2681427	99	54	34,17	cyclictest	2690327	-21	kworker/u4:3-rpciod	20:15:01	1
2681427	99	54	32,20	cyclictest	2711070	-21	munin-plugin-st	21:05:00	1
2681427	99	54	2,17	cyclictest	2709258	-21	ntpq	20:55:29	1
2681427	99	54	2,11	cyclictest	2693142	-21	/usr/sbin/munin	19:55:50	1
2681427	99	54	20,31	cyclictest	0	-21	swapper/1	21:35:25	1
2681427	99	54	1,13	cyclictest	2695082	-21	ntpq	20:00:35	1
2681427	99	54	1,11	cyclictest	2688535	-21	ntpq	19:35:25	1
2681426	99	54	48,5	cyclictest	2680146	-21	kworker/u4:1+events_unbound	19:37:34	0
2681427	99	53	3,46	cyclictest	2689993	-21	ps	19:40:37	1
2681427	99	53	1,13	cyclictest	2686089	-21	ntpq	19:25:34	1
2681427	99	53	11,38	cyclictest	2692985	-21	latency_hist	19:55:01	1
2681427	99	53	1,12	cyclictest	2687264	-21	ntpq	19:30:28	1
2681426	99	53	7,17	cyclictest	2762124	-21	ssh	22:05:10	0
2681426	99	53	45,6	cyclictest	2804021	-21	kworker/u4:11+events_unbound	22:58:14	0
2681426	99	53	45,6	cyclictest	2705837	-21	kworker/u4:12+events_unbound	20:47:45	0
2681426	99	53	12,31	cyclictest	0	-21	swapper/0	22:00:20	0
2681427	99	52	3,7	cyclictest	2701580	-21	ntpq	20:25:34	1
2681426	99	52	39,6	cyclictest	2813053	-21	kworker/u4:1+events_unbound	23:10:34	0
2681426	99	51	45,5	cyclictest	2822004	-21	kworker/u4:9+events_unbound	23:17:02	0
2681426	99	51	44,5	cyclictest	2873436	-21	sendmail_mailqu	00:10:36	0
2681426	99	51	44,5	cyclictest	2728354	-21	kworker/u4:10+events_unbound	21:38:01	0
2681427	99	50	2,4	cyclictest	2711819	-21	sed	21:05:27	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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