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 Jan 11, 2026 12:44:11)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2555294	99	151	130,6	cyclictest	2744019	-21	kworker/u4:0+events_unbound	12:30:36	0
2555294	99	127	113,5	cyclictest	2610585	-21	kworker/u4:13+events_unbound	09:39:59	0
2555296	99	106	96,7	cyclictest	2618887	-21	kworker/u4:12+events_unbound	09:50:01	1
2555294	99	102	95,5	cyclictest	2653842	-21	kworker/u4:15+events_unbound	10:31:56	0
2555294	99	93	88,4	cyclictest	2680371	-21	kworker/u4:11+events_unbound	11:15:22	0
2555294	99	93	81,9	cyclictest	2744019	-21	kworker/u4:0+events_unbound	12:25:35	0
2555294	99	92	79,7	cyclictest	2705903	-21	kworker/u4:3+events_unbound	11:45:29	0
2555296	99	82	74,6	cyclictest	2559046	-21	kworker/u4:11+events_unbound	08:19:44	1
2555296	99	82	73,6	cyclictest	2559047	-21	kworker/u4:13+events_unbound	07:59:39	1
2555296	99	81	73,6	cyclictest	2566695	-21	kworker/u4:4+events_unbound	08:09:39	1
2555296	99	77	69,6	cyclictest	2584480	-21	kworker/u4:6+events_unbound	09:05:01	1
2555294	99	77	68,7	cyclictest	2170901	-21	kworker/u4:14+events_unbound	07:55:01	0
2555296	99	76	62,6	cyclictest	2559047	-21	kworker/u4:13+events_unbound	08:39:50	1
2555294	99	76	68,5	cyclictest	2718813	-21	kworker/u4:5+events_unbound	11:50:30	0
2555294	99	75	69,4	cyclictest	2559047	-21	kworker/u4:13+events_unbound	08:04:38	0
2555296	99	72	65,5	cyclictest	2559046	-21	kworker/u4:11+events_unbound	08:20:01	1
2555294	99	72	66,4	cyclictest	2718209	-21	kworker/u4:4+events_unbound	11:55:30	0
2555294	99	72	64,6	cyclictest	2601715	-21	kworker/u4:0+events_unbound	09:29:59	0
2555294	99	72	63,7	cyclictest	2623342	-21	kworker/u4:2+events_unbound	09:55:02	0
2555296	99	71	61,8	cyclictest	2680370	-21	kworker/u4:10+events_unbound	11:40:28	1
2555296	99	71	61,8	cyclictest	2680370	-21	kworker/u4:10+events_unbound	11:40:28	1
2555296	99	71	61,7	cyclictest	2723082	-21	kworker/u4:1+events_unbound	11:55:00	1
2555294	99	70	6,20	cyclictest	2555274	-21	munin-run	07:10:01	0
2555294	99	69	55,9	cyclictest	54	-21	kswapd0	09:50:18	0
2555296	99	68	58,7	cyclictest	2560589	-21	apt-get	07:30:14	1
2555296	99	68	58,6	cyclictest	0	-21	swapper/1	10:40:14	1
2555294	99	68	60,6	cyclictest	2662687	-21	kworker/u4:4+events_unbound	11:00:17	0
2555296	99	67	59,6	cyclictest	2552811	-21	kworker/u4:0+events_unbound	07:49:37	1
2555296	99	66	59,5	cyclictest	2543877	-21	kworker/u4:10+events_unbound	07:45:01	1
2555296	99	66	57,7	cyclictest	2574376	-21	kworker/u4:5+events_unbound	09:09:55	1
2555296	99	66	55,8	cyclictest	2574376	-21	kworker/u4:5+events_unbound	08:44:50	1
2555294	99	66	58,6	cyclictest	2623340	-21	kworker/u4:0+events_unbound	10:16:43	0
2555294	99	66	4,21	cyclictest	2604347	-21	ssh	09:30:26	0
2555296	99	65	60,4	cyclictest	2718813	-21	kworker/u4:5+events_unbound	12:10:34	1
2555294	99	65	57,6	cyclictest	2627804	-21	kworker/u4:8+events_unbound	10:00:03	0
2555296	99	63	58,3	cyclictest	2680372	-21	kworker/u4:12+events_power_efficient	11:26:58	1
2555294	99	63	58,3	cyclictest	2736026	-21	kworker/u4:2+events_unbound	12:05:00	0
2555294	99	63	54,6	cyclictest	2326990	-21	kworker/u4:1+events_unbound	08:25:01	0
2555296	99	62	55,6	cyclictest	2649410	-21	kworker/u4:12+events_unbound	10:25:06	1
2555296	99	61	34,9	cyclictest	2705903	-21	kworker/u4:3+events_unbound	11:30:24	1
2555294	99	61	34,11	cyclictest	54	-21	kswapd0	11:05:07	0
2555296	99	60	53,5	cyclictest	2580684	-21	kworker/u4:2+events_unbound	08:50:01	1
2555296	99	60	48,6	cyclictest	2744019	-21	kworker/u4:0+events_unbound	12:31:10	1
2555296	99	60	47,10	cyclictest	2686374	-21	apt-get	11:05:09	1
2555296	99	60	46,7	cyclictest	2697224	-21	kworker/u4:16+events_unbound	11:20:00	1
2555296	99	59	44,7	cyclictest	2744022	-21	kworker/u4:6+events_unbound	12:21:59	1
2555294	99	59	51,5	cyclictest	2661461	-21	sh	10:35:36	0
2555294	99	59	50,7	cyclictest	2668569	-21	ssh	10:44:23	0
2555296	99	58	51,5	cyclictest	2662687	-21	kworker/u4:4+events_unbound	11:05:00	1
2555296	99	58	36,6	cyclictest	2627805	-21	kworker/u4:9+events_unbound	10:03:43	1
2555294	99	58	45,11	cyclictest	2710262	-21	kworker/u4:6+events_unbound	11:32:59	0
2555296	99	57	49,6	cyclictest	2578144	-21	kworker/u4:10+events_unbound	08:54:53	1
2555296	99	57	46,7	cyclictest	37	-21	kcompactd0	10:57:47	1
2555296	99	56	48,6	cyclictest	2641138	-21	kworker/u4:10+events_unbound	10:30:03	1
2555296	99	56	47,6	cyclictest	2700150	-21	ssh	11:20:23	1
2555296	99	56	45,5	cyclictest	2680371	-21	kworker/u4:11+events_unbound	11:12:59	1
2555294	99	56	49,5	cyclictest	2618888	-21	kworker/u4:13+events_unbound	10:05:36	0
2555294	99	56	49,5	cyclictest	2618888	-21	kworker/u4:13+events_unbound	10:05:36	0
2555294	99	56	47,7	cyclictest	2704386	-21	sshd	11:25:22	0
2555296	99	55	46,7	cyclictest	2567953	-21	kworker/u4:9+events_unbound	08:29:47	1
2555296	99	55	44,7	cyclictest	2627804	-21	kworker/u4:8-rpciod	10:20:02	1
2555296	99	55	36,6	cyclictest	2618880	-21	kworker/u4:4+events_unbound	09:56:11	1
2555294	99	55	48,5	cyclictest	2555291	-21	cyclictest	08:34:46	0
2555296	99	54	47,5	cyclictest	2755892	-21	kworker/u4:3+events_unbound	12:28:59	1
2555296	99	54	44,7	cyclictest	2610585	-21	kworker/u4:13+events_unbound	09:40:13	1
2555296	99	54	37,8	cyclictest	2566696	-21	kworker/u4:6+events_unbound	08:02:55	1
2555296	99	54	32,6	cyclictest	2701584	-21	kworker/u4:17+events_unbound	12:07:34	1
2555296	99	54	32,6	cyclictest	2671558	-21	kworker/u4:5+events_unbound	10:54:44	1
2555294	99	54	48,4	cyclictest	2559489	-21	fschecks_count	07:25:20	0
2555294	99	54	41,7	cyclictest	2618888	-21	kworker/u4:13+events_unbound	09:48:44	0
2555296	99	53	31,6	cyclictest	2760194	-21	kworker/u4:2+events_unbound	12:37:44	1
2555294	99	53	40,6	cyclictest	2671556	-21	kworker/u4:2+events_unbound	11:11:59	0
2555296	99	52	44,6	cyclictest	2557753	-21	kworker/u4:5+events_unbound	07:24:30	1
2555294	99	52	45,5	cyclictest	2641139	-21	kworker/u4:11+events_unbound	10:20:07	0
2555294	99	52	44,6	cyclictest	2678127	-21	sshd	10:55:17	0
2555296	99	51	44,5	cyclictest	2552811	-21	kworker/u4:0+events_unbound	07:14:30	1
2555296	99	51	32,5	cyclictest	2718813	-21	kworker/u4:5+events_unbound	11:59:43	1
2555294	99	51	44,5	cyclictest	2679733	-21	kworker/u4:9+events_unbound	11:20:35	0
2555294	99	51	43,6	cyclictest	2636711	-21	kworker/u4:3+events_unbound	10:11:14	0
2555296	99	50	43,5	cyclictest	2623340	-21	kworker/u4:0+events_unbound	10:25:00	1
2555296	99	50	43,5	cyclictest	2576888	-21	kworker/u4:7+events_unbound	09:25:43	1
2555296	99	50	43,5	cyclictest	2559048	-21	kworker/u4:15+events_unbound	07:38:00	1
2555296	99	50	30,4	cyclictest	2723083	-21	kworker/u4:2+events_unbound	11:49:54	1
2555296	99	50	28,5	cyclictest	2662687	-21	kworker/u4:4+events_unbound	10:45:40	1
2555294	99	50	33,13	cyclictest	2716511	-21	apt-get	11:40:12	0
2555294	99	50	33,13	cyclictest	2716511	-21	apt-get	11:40:12	0
2555296	99	49	43,4	cyclictest	2625341	-21	latency_hist	09:55:01	1
2555296	99	49	41,6	cyclictest	2635156	-21	diskmemload	10:05:31	1
2555296	99	49	41,6	cyclictest	2635156	-21	diskmemload	10:05:31	1
2555296	99	49	41,6	cyclictest	2578144	-21	kworker/u4:10+events_unbound	08:59:53	1
2555294	99	49	42,5	cyclictest	2653842	-21	kworker/u4:15+events_unbound	10:29:59	0
2555294	99	49	42,5	cyclictest	2596057	-21	sed	09:20:38	0
2555294	99	49	41,5	cyclictest	0	-21	swapper/0	12:05:31	0
2555294	99	49	39,8	cyclictest	2673780	-21	aten_r7power_po	10:50:18	0
2555296	99	48	42,4	cyclictest	2579429	-21	kworker/u4:0+events_unbound	09:12:59	1
2555296	99	48	41,5	cyclictest	2641138	-21	kworker/u4:10+events_unbound	10:38:59	1
2555296	99	48	41,5	cyclictest	2556497	-21	kworker/u4:3+events_unbound	08:14:41	1
2555296	99	48	39,6	cyclictest	2576711	-21	timerwakeupswit	08:30:36	1
2555294	99	48	42,4	cyclictest	2705902	-21	kworker/u4:2+events_unbound	11:40:02	0
2555294	99	48	41,5	cyclictest	2669296	-21	aten2__	10:45:16	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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