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 Apr 24, 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
2539005	99	98	85,6	cyclictest	2713616	-21	kworker/u4:14+events_unbound	12:05:25	1
2539005	99	98	85,6	cyclictest	2713616	-21	kworker/u4:14+events_unbound	12:05:25	1
2539005	99	94	87,5	cyclictest	2639259	-21	kworker/u4:8+events_unbound	10:30:06	1
2539003	99	90	74,7	cyclictest	0	-21	swapper/0	09:15:35	0
2539003	99	88	31,34	cyclictest	0	-21	swapper/0	10:50:10	0
2539005	99	87	80,5	cyclictest	2700377	-21	kworker/u4:5+events_unbound	11:45:20	1
2539005	99	86	79,5	cyclictest	2603780	-21	kworker/u4:0+events_unbound	10:00:00	1
2539005	99	85	77,6	cyclictest	2567234	-21	kworker/u4:9+events_unbound	08:59:47	1
2539003	99	82	11,8	cyclictest	2539004	-21	kworker/u4:5	07:10:01	0
2539005	99	81	74,5	cyclictest	2542805	-21	kworker/u4:16+events_unbound	07:39:25	1
2539005	99	81	74,5	cyclictest	2541495	-21	kworker/u4:12+events_unbound	07:24:23	1
2539005	99	80	74,4	cyclictest	2709218	-21	kworker/u4:10+events_unbound	11:55:23	1
2539005	99	79	72,5	cyclictest	2726825	-21	kworker/u4:7+events_unbound	12:25:02	1
2539005	99	78	71,5	cyclictest	2546621	-21	kworker/u4:14+events_unbound	07:44:25	1
2539005	99	76	69,5	cyclictest	2568531	-21	kworker/u4:0+events_unbound	09:09:49	1
2539005	99	75	68,5	cyclictest	2558229	-21	kworker/u4:3+events_unbound	08:24:38	1
2539003	99	75	63,9	cyclictest	53	-21	kswapd0	11:50:15	0
2539003	99	75	36,36	cyclictest	0	-21	swapper/0	09:30:36	0
2539003	99	75	36,36	cyclictest	0	-21	swapper/0	09:30:36	0
2539003	99	74	24,47	cyclictest	0	-21	swapper/0	11:00:15	0
2539003	99	74	22,36	cyclictest	0	-21	swapper/0	12:15:18	0
2539003	99	73	26,33	cyclictest	2725387	-21	processes	12:05:37	0
2539003	99	73	26,33	cyclictest	2725387	-21	processes	12:05:37	0
2539005	99	72	65,5	cyclictest	2546620	-21	kworker/u4:11+events_unbound	08:14:36	1
2539005	99	71	63,6	cyclictest	2530228	-21	kworker/u4:8+events_unbound	07:54:28	1
2539003	99	71	5,14	cyclictest	2690679	-21	ntpq	11:25:38	0
2539003	99	71	4,11	cyclictest	2681912	-21	ps	11:15:38	0
2539003	99	71	35,33	cyclictest	0	-21	swapper/0	11:55:26	0
2539003	99	71	20,47	cyclictest	2676611	-21	apt-get	11:10:11	0
2539003	99	70	38,30	cyclictest	2641923	-21	gltestperf	10:30:19	0
2539003	99	69	3,25	cyclictest	2709428	-21	ssh	11:47:13	0
2539005	99	68	61,5	cyclictest	2546620	-21	kworker/u4:11+events_unbound	08:54:46	1
2539003	99	68	39,26	cyclictest	0	-21	swapper/0	12:10:25	0
2539003	99	68	35,29	cyclictest	2565979	-21	cron	08:55:01	0
2539003	99	67	39,25	cyclictest	2655412	-21	/usr/sbin/munin	10:45:23	0
2539003	99	67	33,32	cyclictest	2672947	-21	ntpq	11:05:29	0
2539003	99	67	33,32	cyclictest	2555410	-21	timerwakeupswit	08:10:37	0
2539003	99	67	33,31	cyclictest	2564113	-21	kernelversion	08:45:26	0
2539005	99	66	58,6	cyclictest	2559496	-21	kworker/u4:7+events_unbound	08:39:40	1
2539005	99	66	58,6	cyclictest	2537641	-21	kworker/u4:10+events_unbound	08:19:38	1
2539003	99	66	58,6	cyclictest	2617318	-21	kworker/u4:10+events_unbound	10:10:02	0
2539003	99	66	5,16	cyclictest	2664869	-21	head	10:55:47	0
2539003	99	66	4,24	cyclictest	2649260	-21	ssh	10:38:52	0
2539003	99	66	36,27	cyclictest	2686610	-21	grep	11:20:38	0
2539003	99	66	34,29	cyclictest	2724183	-21	latency_hist	12:05:01	0
2539003	99	66	30,33	cyclictest	0	-21	swapper/0	12:35:37	0
2539003	99	66	29,33	cyclictest	2605921	-21	/usr/sbin/munin	09:50:15	0
2539005	99	65	58,5	cyclictest	2599258	-21	kworker/u4:9+events_unbound	10:10:00	1
2539005	99	65	57,6	cyclictest	2563340	-21	kworker/u4:0+events_unbound	08:49:46	1
2539003	99	65	51,9	cyclictest	2619137	-21	apt-get	10:05:12	0
2539003	99	65	3,16	cyclictest	2628735	-21	ssh	10:15:23	0
2539003	99	65	31,31	cyclictest	0	-21	swapper/0	09:14:49	0
2539003	99	65	2,16	cyclictest	2584314	-21	ssh	09:25:27	0
2539005	99	64	48,6	cyclictest	2696609	-21	kworker/u4:0+events_unbound	11:33:59	1
2539003	99	64	33,28	cyclictest	0	-21	swapper/0	07:40:17	0
2539003	99	64	3,11	cyclictest	2545371	-21	modprobe	07:35:00	0
2539005	99	63	56,5	cyclictest	2524931	-21	kworker/u4:5+events_unbound	08:09:33	1
2539005	99	63	45,7	cyclictest	2726824	-21	kworker/u4:3+events_unbound	12:10:59	1
2539003	99	63	32,28	cyclictest	2692212	-21	kworker/u4:7-rpciod	11:40:36	0
2539003	99	63	32,28	cyclictest	2551037	-21	gltestperf	07:55:19	0
2539003	99	63	32,28	cyclictest	0	-21	swapper/0	08:20:12	0
2539003	99	63	30,30	cyclictest	2636785	-21	latency_hist	10:25:01	0
2539003	99	63	28,33	cyclictest	2747090	-21	switchtime	12:30:37	0
2539003	99	63	28,32	cyclictest	2698631	-21	cpu	11:35:16	0
2539003	99	63	20,40	cyclictest	0	-21	swapper/0	10:25:14	0
2539005	99	62	47,11	cyclictest	2650675	-21	fschecks_count	10:40:21	1
2539003	99	62	28,32	cyclictest	2651142	-21	ntpq	10:40:33	0
2539003	99	61	5,20	cyclictest	2611069	-21	ssh	09:55:32	0
2539003	99	61	48,8	cyclictest	2553047	-21	modprobe	08:05:00	0
2539003	99	61	26,32	cyclictest	0	-21	swapper/0	07:20:20	0
2539003	99	61	22,35	cyclictest	0	-21	swapper/0	09:35:20	0
2539003	99	61	2,11	cyclictest	2579111	-21	apt-get	09:20:14	0
2539003	99	61	20,38	cyclictest	0	-21	swapper/0	08:35:23	0
2539005	99	60	53,5	cyclictest	2669938	-21	kworker/u4:13+events_unbound	11:38:22	1
2539003	99	60	29,28	cyclictest	0	-21	swapper/0	08:20:02	0
2539003	99	60	27,30	cyclictest	0	-21	swapper/0	09:40:41	0
2539003	99	60	25,32	cyclictest	0	-21	swapper/0	07:15:21	0
2539003	99	60	24,32	cyclictest	0	-21	swapper/0	07:55:01	0
2539003	99	60	20,37	cyclictest	2737645	-21	cpu	12:20:18	0
2539003	99	60	19,4	cyclictest	256	50	irq/23-42890000.ethernet	08:30:16	0
2539003	99	59	25,31	cyclictest	0	-21	swapper/0	07:45:37	0
2539003	99	59	24,33	cyclictest	2615313	-21	kernelversion	10:00:22	0
2539003	99	59	23,34	cyclictest	2569438	-21	grep	09:05:35	0
2539003	99	59	22,33	cyclictest	0	-21	swapper/0	08:25:19	0
2539003	99	59	20,36	cyclictest	0	-21	swapper/0	08:05:16	0
2539005	99	58	51,5	cyclictest	2541495	-21	kworker/u4:12+events_unbound	07:34:24	1
2539005	99	58	50,6	cyclictest	2608308	-21	kworker/u4:12+events_unbound	09:54:57	1
2539003	99	58	3,13	cyclictest	2543711	-21	ps	07:25:34	0
2539003	99	58	22,33	cyclictest	256	50	irq/23-42890000.ethernet	11:35:00	0
2539003	99	58	1,7	cyclictest	2742054	-21	fschecks_time	12:25:19	0
2539005	99	57	40,6	cyclictest	2691572	-21	kworker/u4:6+events_unbound	11:26:43	1
2539003	99	57	26,28	cyclictest	0	-21	swapper/0	09:45:39	0
2539005	99	56	49,5	cyclictest	2721796	-21	kworker/u4:5+events_unbound	12:24:42	1
2539003	99	56	30,24	cyclictest	2539415	-21	fschecks_count	07:10:19	0
2539005	99	55	39,8	cyclictest	2569846	-21	diskmemload	11:00:12	1
2539003	99	55	17,34	cyclictest	0	-21	swapper/0	08:40:21	0
2539005	99	54	48,4	cyclictest	2685577	-21	sshd	11:20:16	1
2539005	99	54	48,4	cyclictest	2603781	-21	kworker/u4:1+events_unbound	10:05:01	1
2539005	99	54	47,5	cyclictest	2545350	-21	kworker/u4:1+events_unbound	09:17:01	1
2539005	99	54	42,8	cyclictest	2549212	-21	modprobe	07:50:00	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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