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 Sun Aug 16, 2026 12:44:08)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2849490	99	103	95,6	cyclictest	2909823	-21	kworker/u4:7+events_unbound	10:14:08	0
2849492	99	102	83,8	cyclictest	2875172	-21	kworker/u4:14+events_unbound	09:34:00	1
2849490	99	102	95,5	cyclictest	2989957	-21	kworker/u4:1+events_unbound	11:24:21	0
2849490	99	100	84,5	cyclictest	2967939	-21	kworker/u4:2+events_unbound	10:49:13	0
2849490	99	99	91,6	cyclictest	2875172	-21	kworker/u4:14+events_unbound	09:23:58	0
2849490	99	93	84,7	cyclictest	3048312	-21	kworker/u4:4+events_unbound	12:19:29	0
2849490	99	93	84,7	cyclictest	3048312	-21	kworker/u4:4+events_unbound	12:19:29	0
2849490	99	93	80,5	cyclictest	2945334	-21	kworker/u4:10+events_unbound	10:44:13	0
2849490	99	91	84,5	cyclictest	2853467	-21	kworker/u4:12+events_unbound	08:18:39	0
2849490	99	89	81,6	cyclictest	2909823	-21	kworker/u4:7+events_unbound	09:44:03	0
2849492	99	88	80,5	cyclictest	3039232	-21	kworker/u4:2+events_unbound	12:09:27	1
2849490	99	87	79,6	cyclictest	2905277	-21	kworker/u4:9+events_unbound	09:39:02	0
2849492	99	82	73,6	cyclictest	3048315	-21	kworker/u4:10+events_unbound	12:34:31	1
2849490	99	81	73,6	cyclictest	2862378	-21	kworker/u4:4+events_unbound	08:48:45	0
2849490	99	79	71,6	cyclictest	2853462	-21	kworker/u4:6+events_unbound	08:58:49	0
2849490	99	79	71,6	cyclictest	2840522	-21	kworker/u4:18+events_unbound	07:33:31	0
2849490	99	79	70,7	cyclictest	2857269	-21	kworker/u4:1+events_unbound	09:18:58	0
2849490	99	79	70,7	cyclictest	2857269	-21	kworker/u4:1+events_unbound	09:18:57	0
2849490	99	74	60,11	cyclictest	53	-21	kswapd0	11:10:08	0
2849492	99	69	61,6	cyclictest	2909823	-21	kworker/u4:7+events_unbound	10:29:09	1
2849490	99	69	62,5	cyclictest	2853462	-21	kworker/u4:6+events_unbound	07:38:32	0
2849490	99	69	43,15	cyclictest	2853462	-21	kworker/u4:6+events_unbound	08:30:52	0
2849490	99	67	56,7	cyclictest	3057352	-21	kworker/u4:11+events_unbound	12:29:29	0
2849492	99	66	59,5	cyclictest	3003582	-21	kworker/u4:9+events_unbound	11:29:22	1
2849492	99	66	58,6	cyclictest	3025593	-21	kworker/u4:11+events_unbound	12:04:25	1
2849490	99	66	58,6	cyclictest	2875172	-21	kworker/u4:14+events_unbound	09:03:49	0
2849490	99	66	58,6	cyclictest	2867494	-21	kworker/u4:7+events_unbound	08:23:41	0
2849490	99	66	58,6	cyclictest	2850803	-21	kworker/u4:11+events_unbound	07:13:27	0
2849490	99	66	57,6	cyclictest	2929953	-21	aten_r7power_po	10:05:19	0
2849490	99	65	58,5	cyclictest	2914352	-21	kworker/u4:0+events_unbound	09:54:05	0
2849492	99	63	54,7	cyclictest	2862378	-21	kworker/u4:4+events_unbound	09:25:03	1
2849490	99	63	55,5	cyclictest	0	-21	swapper/0	10:15:15	0
2849492	99	62	56,4	cyclictest	2905273	-21	kworker/u4:5+events_unbound	09:49:04	1
2849490	99	62	47,7	cyclictest	2999035	-21	kworker/u4:2+events_unbound	11:45:47	0
2849490	99	61	54,5	cyclictest	2836671	-21	kworker/u4:10+events_unbound	07:18:28	0
2849492	99	60	45,6	cyclictest	2905271	-21	kworker/u4:1+events_unbound	09:44:59	1
2849490	99	60	52,6	cyclictest	2909823	-21	kworker/u4:7+events_unbound	10:34:11	0
2849490	99	60	52,6	cyclictest	2853467	-21	kworker/u4:12+events_unbound	07:23:29	0
2849490	99	60	39,19	cyclictest	2865170	-21	aten2__	08:10:15	0
2849490	99	59	52,5	cyclictest	2926509	-21	timerandwakeup	10:00:41	0
2849490	99	59	51,6	cyclictest	3043770	-21	kworker/u4:12+events_unbound	12:15:00	0
2849492	99	58	52,4	cyclictest	2963420	-21	kworker/u4:9+events_unbound	10:55:46	1
2849492	99	58	51,5	cyclictest	2905277	-21	kworker/u4:9+events_unbound	09:40:01	1
2849492	99	58	48,6	cyclictest	2979618	-21	ntpq	11:00:30	1
2849492	99	58	43,5	cyclictest	2857269	-21	kworker/u4:1+events_unbound	08:13:37	1
2849492	99	57	49,6	cyclictest	3043770	-21	kworker/u4:12+events_unbound	12:14:28	1
2849492	99	57	47,6	cyclictest	0	-21	swapper/1	12:35:12	1
2849490	99	57	46,7	cyclictest	2894187	-21	ssh	09:25:06	0
2849492	99	56	49,5	cyclictest	2918837	-21	kworker/u4:4+events_unbound	09:59:04	1
2849492	99	56	47,7	cyclictest	2923357	-21	kworker/u4:6+events_unbound	10:00:37	1
2849492	99	56	45,7	cyclictest	0	-21	swapper/1	08:30:39	1
2849490	99	56	48,5	cyclictest	2940784	-21	kworker/u4:5-rpciod	10:25:40	0
2849490	99	56	47,7	cyclictest	53	-21	kswapd0	10:00:00	0
2849490	99	56	45,7	cyclictest	37	-21	kcompactd0	11:07:45	0
2849490	99	56	43,6	cyclictest	2999034	-21	kworker/u4:0+events_unbound	11:53:46	0
2849492	99	55	48,5	cyclictest	2999034	-21	kworker/u4:0+events_unbound	11:49:24	1
2849492	99	55	47,6	cyclictest	3012640	-21	kworker/u4:22+events_unbound	11:44:24	1
2849490	99	55	49,5	cyclictest	3011965	-21	kworker/u4:16+events_unbound	11:39:22	0
2849490	99	55	33,19	cyclictest	0	-21	swapper/0	11:25:30	0
2849492	99	54	47,5	cyclictest	0	-21	swapper/1	12:20:16	1
2849492	99	54	42,5	cyclictest	2883165	-21	kworker/u4:17+events_unbound	09:13:49	1
2849492	99	54	38,6	cyclictest	2857269	-21	kworker/u4:1+events_unbound	09:05:00	1
2849490	99	54	39,5	cyclictest	2945331	-21	kworker/u4:6+events_unbound	10:22:46	0
2849490	99	53	4,9	cyclictest	2992237	-21	ssh	11:15:17	0
2849490	99	53	46,5	cyclictest	3027957	-21	rm	11:55:12	0
2849490	99	53	44,7	cyclictest	2868791	-21	kworker/u4:9+events_unbound	08:41:47	0
2849492	99	52	44,6	cyclictest	2958875	-21	kworker/u4:2+events_unbound	10:40:01	1
2849492	99	52	43,6	cyclictest	2846985	-21	kworker/u4:5+events_unbound	07:10:00	1
2849490	99	52	40,7	cyclictest	2882427	-21	ssh	09:11:21	0
2849492	99	51	44,5	cyclictest	2864942	-21	kworker/u4:5+events_unbound	08:08:35	1
2849492	99	51	42,7	cyclictest	2995907	-21	sshd	11:19:17	1
2849490	99	51	6,41	cyclictest	3036888	-21	ssh	12:05:07	0
2849490	99	51	43,6	cyclictest	3012638	-21	kworker/u4:20+events_unbound	11:43:44	0
2849490	99	51	41,7	cyclictest	2898736	-21	aten_r7power_cu	09:30:18	0
2849490	99	51	37,4	cyclictest	3048315	-21	kworker/u4:10+events_unbound	12:31:45	0
2849492	99	49	42,5	cyclictest	2873570	-21	sendmail_mailqu	08:40:37	1
2849492	99	49	42,5	cyclictest	2850732	-21	unixbench_multi	07:10:44	1
2849492	99	49	41,5	cyclictest	2966565	-21	/usr/sbin/munin	10:45:41	1
2849492	99	49	34,8	cyclictest	2914354	-21	kworker/u4:3+events_unbound	10:15:01	1
2849490	99	49	43,4	cyclictest	2967939	-21	kworker/u4:2+events_unbound	11:00:03	0
2849490	99	49	42,5	cyclictest	2912511	-21	gltestperf	09:45:23	0
2849490	99	49	42,5	cyclictest	2861142	-21	sh	07:55:00	0
2849490	99	49	42,5	cyclictest	2850803	-21	kworker/u4:11+events_unbound	07:48:32	0
2849492	99	48	41,5	cyclictest	2944056	-21	ntpq	10:20:36	1
2849492	99	48	40,6	cyclictest	2862378	-21	kworker/u4:4+events_unbound	08:20:02	1
2849492	99	48	40,5	cyclictest	2988092	-21	df_abs	11:10:28	1
2849492	99	48	39,6	cyclictest	3047215	-21	awk	12:15:43	1
2849492	99	48	39,6	cyclictest	3047215	-21	awk	12:15:42	1
2849492	99	48	38,7	cyclictest	0	-21	swapper/1	10:55:01	1
2849490	99	48	5,18	cyclictest	2876464	-21	modprobe	08:55:00	0
2849490	99	48	41,5	cyclictest	3064646	-21	processes	12:35:36	0
2849490	99	48	38,7	cyclictest	2879397	-21	df_abs	09:05:17	0
2849492	99	47	40,5	cyclictest	2953270	-21	unixbench-2d	10:30:38	1
2849492	99	47	39,6	cyclictest	3003582	-21	kworker/u4:9+rpciod	11:30:22	1
2849490	99	47	40,5	cyclictest	2957211	-21	sshd	10:35:26	0
2849490	99	47	37,8	cyclictest	3036829	-21	latency_hist	12:05:02	0
2849490	99	47	37,6	cyclictest	256	50	irq/23-42890000.ethernet	08:30:00	0
2849490	99	47	35,7	cyclictest	3051023	-21	ssh	12:20:27	0
2849492	99	46	39,5	cyclictest	3023847	-21	fschecks_count	11:50:22	1
2849492	99	46	39,5	cyclictest	2984374	-21	switchtime	11:05:40	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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