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 Mon Jan 05, 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
2518991	99	124	105,5	cyclictest	2521453	-21	kworker/u4:9+events_unbound	07:35:01	1
2518990	99	116	101,13	cyclictest	2581553	-21	kworker/u4:2+events_unbound	10:05:37	0
2518990	99	111	97,5	cyclictest	2551726	-21	kworker/u4:0+events_unbound	10:00:37	0
2518990	99	107	96,8	cyclictest	54	-21	kswapd0	09:45:35	0
2518991	99	105	98,5	cyclictest	2597852	-21	kworker/u4:12+events_unbound	10:25:44	1
2518990	99	105	97,5	cyclictest	2551726	-21	kworker/u4:0+events_unbound	09:40:35	0
2518990	99	104	89,5	cyclictest	2643786	-21	kworker/u4:3+events_unbound	11:30:59	0
2518991	99	100	91,7	cyclictest	2643786	-21	kworker/u4:3+events_unbound	11:25:58	1
2518991	99	99	79,7	cyclictest	2643786	-21	kworker/u4:3+events_unbound	11:15:58	1
2518990	99	98	85,7	cyclictest	2521448	-21	kworker/u4:1+events_unbound	07:45:06	0
2518991	99	97	89,6	cyclictest	2639481	-21	kworker/u4:1+events_unbound	11:05:55	1
2518991	99	96	88,6	cyclictest	2668635	-21	kworker/u4:4+events_unbound	11:36:01	1
2518990	99	93	85,6	cyclictest	2597851	-21	kworker/u4:11+events_unbound	10:10:39	0
2518991	99	90	71,6	cyclictest	2701612	-21	kworker/u4:15+events_unbound	12:15:00	1
2518990	99	85	76,6	cyclictest	2648050	-21	kworker/u4:6+events_unbound	11:10:57	0
2518991	99	84	77,5	cyclictest	2597848	-21	kworker/u4:7+events_unbound	10:20:43	1
2518991	99	83	75,4	cyclictest	2685372	-21	kworker/u4:8+events_unbound	11:56:04	1
2518991	99	82	76,4	cyclictest	2643786	-21	kworker/u4:3+events_unbound	11:30:03	1
2518991	99	79	65,6	cyclictest	2522749	-21	kworker/u4:4+events_unbound	07:55:01	1
2518990	99	78	70,6	cyclictest	2685368	-21	kworker/u4:2+events_unbound	12:06:06	0
2518990	99	77	68,7	cyclictest	2672787	-21	kworker/u4:7+events_unbound	11:46:02	0
2518990	99	77	63,5	cyclictest	2577355	-21	kworker/u4:12+events_unbound	09:50:35	0
2518991	99	76	62,5	cyclictest	2521456	-21	kworker/u4:12+events_unbound	08:55:01	1
2518990	99	75	67,6	cyclictest	2697970	-21	kworker/u4:3+events_unbound	12:11:08	0
2518990	99	74	66,6	cyclictest	2639485	-21	kworker/u4:7+events_unbound	11:10:01	0
2518990	99	74	66,5	cyclictest	2524007	-21	kworker/u4:11+events_unbound	08:45:23	0
2518990	99	74	47,23	cyclictest	54	-21	kswapd0	10:55:06	0
2518990	99	73	65,6	cyclictest	2597850	-21	kworker/u4:10+events_unbound	10:15:40	0
2518991	99	72	64,6	cyclictest	2648052	-21	kworker/u4:9+events_unbound	11:20:59	1
2518991	99	71	61,7	cyclictest	0	-21	swapper/1	09:35:16	1
2518990	99	70	62,6	cyclictest	2577355	-21	kworker/u4:12+events_unbound	09:55:36	0
2518990	99	70	62,5	cyclictest	2701608	-21	kworker/u4:11+events_unbound	12:21:08	0
2518990	99	67	60,5	cyclictest	2701608	-21	kworker/u4:11+events_unbound	12:31:12	0
2518990	99	67	59,5	cyclictest	15	1	ktimers/0	09:11:42	0
2518990	99	66	57,6	cyclictest	2527796	-21	kworker/u4:14+events_unbound	09:10:01	0
2518991	99	65	58,5	cyclictest	2521448	-21	kworker/u4:1+events_unbound	07:29:57	1
2518990	99	65	58,5	cyclictest	2672786	-21	kworker/u4:5+events_unbound	11:41:02	0
2518990	99	65	58,5	cyclictest	2527797	-21	kworker/u4:15+events_unbound	07:50:07	0
2518990	99	65	57,6	cyclictest	2701612	-21	kworker/u4:15+events_unbound	12:16:09	0
2518990	99	63	56,5	cyclictest	2521456	-21	kworker/u4:12+events_unbound	07:19:55	0
2518991	99	62	52,7	cyclictest	2696007	-21	gltestperf	12:05:23	1
2518991	99	60	50,8	cyclictest	2568886	-21	kworker/u4:4+events_unbound	09:50:14	1
2518991	99	59	50,7	cyclictest	2533106	-21	systemd	08:05:09	1
2518991	99	59	44,8	cyclictest	2702199	-21	kworker/u4:17+events_unbound	12:17:01	1
2518991	99	58	44,6	cyclictest	2652293	-21	kworker/u4:14+events_unbound	11:46:59	1
2518990	99	58	44,12	cyclictest	2551729	-21	kworker/u4:3+events_unbound	09:15:31	0
2518991	99	57	50,5	cyclictest	2602070	-21	kworker/u4:4+events_unbound	10:40:47	1
2518991	99	57	36,6	cyclictest	2672787	-21	kworker/u4:7+events_unbound	12:00:23	1
2518990	99	57	51,4	cyclictest	19	1	rcuc/0	10:49:44	0
2518991	99	56	48,6	cyclictest	2549074	-21	sshd	09:05:29	1
2518991	99	56	44,5	cyclictest	2618953	-21	kworker/u4:10+events_unbound	10:36:00	1
2518991	99	56	41,6	cyclictest	2568890	-21	kworker/u4:10+events_unbound	09:40:18	1
2518990	99	56	49,4	cyclictest	2691714	-21	fschecks_count	12:00:20	0
2518991	99	55	32,7	cyclictest	2539325	-21	kworker/u4:4+events_unbound	09:19:04	1
2518990	99	55	48,5	cyclictest	2631028	-21	kworker/u4:16+events_unbound	10:50:49	0
2518991	99	54	47,5	cyclictest	2283935	-21	kworker/u4:3+events_unbound	07:14:56	1
2518990	99	54	44,8	cyclictest	54	-21	kswapd0	11:20:19	0
2518991	99	53	37,9	cyclictest	2639483	-21	kworker/u4:4+events_unbound	11:00:13	1
2518991	99	53	37,12	cyclictest	0	-21	swapper/1	10:00:31	1
2518990	99	53	45,6	cyclictest	2524007	-21	kworker/u4:11+events_unbound	09:05:00	0
2518990	99	53	40,6	cyclictest	2551731	-21	kworker/u4:6+events_unbound	09:20:03	0
2518991	99	52	45,5	cyclictest	2701609	-21	kworker/u4:12+events_unbound	12:29:59	1
2518991	99	52	45,5	cyclictest	2585207	-21	kworker/u4:13+events_unbound	09:55:59	1
2518991	99	52	45,5	cyclictest	2541974	-21	sendmail	08:40:01	1
2518991	99	52	44,6	cyclictest	2522480	-21	switchtime	07:20:37	1
2518990	99	52	46,4	cyclictest	2643786	-21	kworker/u4:3+events_unbound	11:15:15	0
2518990	99	52	40,6	cyclictest	2573114	-21	kworker/u4:2+events_unbound	09:37:42	0
2518990	99	52	31,19	cyclictest	2608651	-21	fschecks_time	10:20:20	0
2518991	99	51	39,9	cyclictest	0	-21	swapper/1	09:10:12	1
2518991	99	51	34,5	cyclictest	2643786	-21	kworker/u4:3+events_unbound	11:15:01	1
2518990	99	51	44,5	cyclictest	2567775	-21	threads	09:30:38	0
2518990	99	51	44,5	cyclictest	2518986	-21	cyclictest	12:25:08	0
2518990	99	51	43,5	cyclictest	2721179	-21	diskmemload	12:35:37	0
2518990	99	51	42,7	cyclictest	2602070	-21	kworker/u4:4+events_unbound	10:25:14	0
2518990	99	51	42,6	cyclictest	0	-21	swapper/0	10:30:17	0
2518990	99	51	41,7	cyclictest	2618954	-21	kworker/u4:11+events_unbound	10:38:54	0
2518990	99	51	28,7	cyclictest	2521453	-21	kworker/u4:9+events_unbound	08:05:27	0
2518991	99	50	43,5	cyclictest	2602067	-21	kworker/u4:1+events_unbound	10:20:01	1
2518991	99	50	43,5	cyclictest	2562771	-21	df_abs	09:25:17	1
2518991	99	50	42,5	cyclictest	2683468	-21	fschecks_count	11:50:22	1
2518991	99	50	40,7	cyclictest	388	-21	dbus-daemon	12:21:08	1
2518991	99	50	34,6	cyclictest	2522746	-21	kworker/u4:0+events_unbound	07:39:02	1
2518991	99	50	34,6	cyclictest	2522746	-21	kworker/u4:0+events_unbound	07:39:02	1
2518991	99	50	31,5	cyclictest	2618953	-21	kworker/u4:10+events_unbound	10:33:00	1
2518991	99	49	41,6	cyclictest	2530935	-21	fschecks_time	07:55:20	1
2518991	99	49	41,5	cyclictest	2532238	-21	gltestperf	08:00:19	1
2518990	99	49	43,5	cyclictest	2518986	-21	cyclictest	08:40:20	0
2518990	99	49	42,5	cyclictest	2662887	-21	diskmemload	11:25:21	0
2518990	99	49	42,5	cyclictest	2521453	-21	kworker/u4:9+rpciod	07:35:01	0
2518990	99	49	39,8	cyclictest	2625027	-21	aten_r7power_po	10:40:17	0
2518991	99	48	40,6	cyclictest	2521448	-21	kworker/u4:1+events_unbound	07:17:01	1
2518991	99	48	39,7	cyclictest	2540772	-21	latency_hist	08:35:00	1
2518991	99	48	39,6	cyclictest	2675848	-21	run-parts	11:40:39	1
2518991	99	48	38,8	cyclictest	2547471	-21	fschecks_count	09:00:17	1
2518991	99	48	38,7	cyclictest	2536968	-21	latency_hist	08:20:00	1
2518991	99	48	25,7	cyclictest	2602070	-21	kworker/u4:4+events_unbound	10:45:12	1
2518990	99	48	42,4	cyclictest	54	-21	kswapd0	11:50:37	0
2518990	99	48	41,5	cyclictest	2522748	-21	kworker/u4:3+events_unbound	07:40:03	0
2518990	99	48	41,5	cyclictest	2518986	-21	cyclictest	11:55:33	0
2518990	99	48	39,6	cyclictest	2540780	-21	cut	08:35:02	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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