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 Tue Dec 09, 2025 12:44:07)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
93990	99	130	122,6	cyclictest	180939	-21	kworker/u4:5+events_unbound	10:35:07	0
93990	99	127	119,6	cyclictest	93913	-21	kworker/u4:7+events_unbound	07:29:34	0
93990	99	127	119,6	cyclictest	93913	-21	kworker/u4:7+events_unbound	07:29:33	0
93990	99	126	118,6	cyclictest	106906	-21	kworker/u4:9+events_unbound	08:14:42	0
93992	99	123	112,9	cyclictest	53	-21	kswapd0	11:50:23	1
93992	99	123	112,7	cyclictest	173949	-21	kworker/u4:5+events_unbound	10:25:07	1
93992	99	120	112,6	cyclictest	123943	-21	kworker/u4:7+events_unbound	09:14:50	1
93990	99	119	105,6	cyclictest	191710	-21	kworker/u4:3+events_unbound	11:00:13	0
93992	99	118	102,10	cyclictest	191715	-21	kworker/u4:10+events_unbound	11:40:21	1
93992	99	117	109,6	cyclictest	249600	-21	kworker/u4:17+events_unbound	12:10:25	1
93992	99	117	107,6	cyclictest	134042	-21	kworker/u4:13+events_unbound	11:05:15	1
93990	99	117	100,12	cyclictest	256765	-21	kworker/u4:2+events_unbound	12:20:29	0
93990	99	116	108,6	cyclictest	110866	-21	kworker/u4:19+events_unbound	09:24:54	0
93990	99	114	106,6	cyclictest	93912	-21	kworker/u4:6+events_unbound	07:54:38	0
93990	99	109	102,5	cyclictest	203105	-21	kworker/u4:8+events_unbound	11:45:23	0
93990	99	109	101,6	cyclictest	195394	-21	kworker/u4:7+events_unbound	10:55:11	0
93990	99	109	101,6	cyclictest	157052	-21	kworker/u4:0+events_unbound	10:30:06	0
93992	99	106	85,7	cyclictest	134042	-21	kworker/u4:13+events_unbound	10:10:03	1
93992	99	105	94,7	cyclictest	108214	-21	kworker/u4:15+events_unbound	09:24:53	1
93990	99	104	96,5	cyclictest	96492	-21	kworker/u4:3+events_unbound	08:19:43	0
93990	99	102	95,5	cyclictest	96493	-21	kworker/u4:8+events_unbound	07:19:30	0
93990	99	100	65,31	cyclictest	53	-21	kswapd0	09:50:11	0
93990	99	99	91,6	cyclictest	122640	-21	kworker/u4:6+events_unbound	08:59:49	0
93992	99	97	88,7	cyclictest	213875	-21	kworker/u4:3+events_unbound	11:30:20	1
93992	99	95	88,5	cyclictest	191713	-21	kworker/u4:6+events_unbound	11:35:20	1
93990	99	95	81,11	cyclictest	53	-21	kswapd0	12:10:07	0
93992	99	92	82,6	cyclictest	93911	-21	kworker/u4:4+events_unbound	08:04:39	1
93992	99	83	75,6	cyclictest	90140	-21	kworker/u4:2+events_unbound	07:24:31	1
93990	99	83	60,20	cyclictest	53	-21	kswapd0	11:20:13	0
93990	99	75	66,7	cyclictest	206383	-21	kworker/u4:12+events_unbound	11:10:15	0
93990	99	75	34,19	cyclictest	90141	-21	kworker/u4:5+rpciod	07:10:01	0
93992	99	74	64,7	cyclictest	100381	-21	kworker/u4:13+events_unbound	07:49:35	1
93990	99	74	66,6	cyclictest	114746	-21	kworker/u4:0+events_unbound	09:34:54	0
93992	99	73	9,52	cyclictest	182590	-21	ssh	10:35:16	1
93992	99	73	66,5	cyclictest	134042	-21	kworker/u4:13+events_unbound	10:15:03	1
93992	99	71	63,6	cyclictest	125234	-21	kworker/u4:1+events_unbound	09:29:54	1
93992	99	70	52,5	cyclictest	256767	-21	kworker/u4:4+events_unbound	12:20:28	1
93990	99	69	61,6	cyclictest	238930	-21	kworker/u4:15+events_unbound	11:55:24	0
93992	99	68	58,8	cyclictest	256765	-21	kworker/u4:2+events_unbound	12:30:31	1
93992	99	66	59,5	cyclictest	235006	-21	kworker/u4:7+events_unbound	12:00:23	1
93992	99	64	54,8	cyclictest	256768	-21	kworker/u4:6+events_unbound	12:25:28	1
93990	99	63	56,5	cyclictest	264112	-21	kworker/u4:11+events_unbound	12:30:03	0
93990	99	61	50,8	cyclictest	138383	-21	systemd	09:29:53	0
93992	99	60	52,6	cyclictest	157053	-21	kworker/u4:4+events_unbound	10:00:00	1
93990	99	60	49,7	cyclictest	251245	-21	cron	12:09:59	0
93992	99	59	52,5	cyclictest	114746	-21	kworker/u4:0+events_unbound	08:34:45	1
93992	99	59	51,6	cyclictest	125234	-21	kworker/u4:1+events_unbound	09:19:53	1
93992	99	58	50,6	cyclictest	206383	-21	kworker/u4:12+events_unbound	11:15:15	1
93992	99	58	48,7	cyclictest	0	-21	swapper/1	09:35:16	1
93992	99	58	48,7	cyclictest	0	-21	swapper/1	09:35:15	1
93990	99	58	52,4	cyclictest	114746	-21	kworker/u4:0+events_unbound	08:35:03	0
93990	99	58	50,6	cyclictest	93912	-21	kworker/u4:6+events_unbound	07:40:03	0
93990	99	57	49,6	cyclictest	96493	-21	kworker/u4:8+events_unbound	07:45:04	0
93990	99	57	4,47	cyclictest	37	-21	kcompactd0	08:05:07	0
93992	99	56	49,5	cyclictest	248410	-21	collect2	12:05:26	1
93990	99	56	5,45	cyclictest	0	-21	swapper/0	09:55:13	0
93990	99	56	49,5	cyclictest	191710	-21	kworker/u4:3+events_unbound	10:50:04	0
93990	99	56	49,5	cyclictest	102971	-21	kworker/u4:10+events_unbound	08:24:31	0
93990	99	56	48,6	cyclictest	91450	-21	kworker/u4:0+events_unbound	07:35:01	0
93992	99	55	48,5	cyclictest	93989	-21	cyclictest	07:59:37	1
93992	99	55	42,10	cyclictest	0	-21	swapper/1	12:35:13	1
93992	99	55	2,40	cyclictest	37	-21	kcompactd0	08:20:25	1
93990	99	55	48,5	cyclictest	125234	-21	kworker/u4:1+events_unbound	09:15:03	0
93990	99	55	44,7	cyclictest	257607	-21	ssh	12:18:57	0
93990	99	55	43,8	cyclictest	264644	-21	kthreadd	12:28:13	0
93990	99	55	39,12	cyclictest	0	-21	swapper/0	11:25:41	0
93992	99	54	45,6	cyclictest	93912	-21	kworker/u4:6+events_unbound	07:34:34	1
93992	99	53	46,5	cyclictest	96493	-21	kworker/u4:8+events_unbound	07:40:01	1
93992	99	53	46,5	cyclictest	195392	-21	kworker/u4:2+events_unbound	11:20:17	1
93992	99	53	43,7	cyclictest	0	-21	swapper/1	12:00:00	1
93990	99	53	46,5	cyclictest	134042	-21	kworker/u4:13+events_unbound	09:44:57	0
93990	99	53	46,5	cyclictest	105530	-21	kworker/u4:17+events_unbound	07:57:33	0
93990	99	53	45,6	cyclictest	171859	-21	ssh	10:20:00	0
93990	99	53	44,6	cyclictest	53	-21	kswapd0	10:40:32	0
93992	99	52	43,6	cyclictest	134042	-21	kworker/u4:13-rpciod	10:05:30	1
93990	99	52	45,5	cyclictest	81320	-21	kworker/u4:15+events_unbound	07:20:08	0
93990	99	52	44,6	cyclictest	157052	-21	kworker/u4:0+events_unbound	10:29:36	0
93990	99	52	27,21	cyclictest	235006	-21	kworker/u4:7-rpciod	11:55:01	0
93992	99	51	42,7	cyclictest	96522	-21	systemd	07:19:29	1
93990	99	51	36,7	cyclictest	221182	-21	kworker/u4:5+events_unbound	11:31:28	0
93992	99	50	2,32	cyclictest	208974	-21	ssh	11:10:30	1
93990	99	50	45,4	cyclictest	116112	-21	kworker/u4:2+events_unbound	08:47:07	0
93990	99	50	42,5	cyclictest	0	-21	swapper/0	11:15:18	0
93992	99	49	42,5	cyclictest	158431	-21	aten2__	10:00:16	1
93992	99	49	42,5	cyclictest	116116	-21	kworker/u4:4+events_unbound	08:54:49	1
93990	99	49	38,5	cyclictest	173949	-21	kworker/u4:5+events_unbound	10:24:38	0
93990	99	49	37,8	cyclictest	0	-21	swapper/0	11:35:23	0
93992	99	48	39,7	cyclictest	0	-21	swapper/1	10:55:18	1
93992	99	48	39,6	cyclictest	173055	-21	/usr/sbin/munin	10:20:36	1
93990	99	48	41,5	cyclictest	116112	-21	kworker/u4:2+events_unbound	09:00:04	0
93990	99	48	41,5	cyclictest	108214	-21	kworker/u4:15+events_unbound	08:25:03	0
93990	99	48	1,43	cyclictest	244890	-21	ssh	12:00:25	0
93992	99	47	41,4	cyclictest	152577	-21	ntp_kernel_err	09:50:29	1
93992	99	47	40,5	cyclictest	233775	-21	fschecks_time	11:45:44	1
93992	99	47	39,6	cyclictest	187284	-21	unixbench-2d	10:40:39	1
93992	99	47	34,7	cyclictest	0	-21	swapper/1	10:54:05	1
93992	99	47	25,6	cyclictest	191713	-21	kworker/u4:6+events_unbound	11:00:35	1
93990	99	47	38,6	cyclictest	82596	-21	kworker/u4:16+events_unbound	07:14:30	0
93992	99	46	38,5	cyclictest	105722	-21	awk	07:55:02	1
93992	99	46	37,7	cyclictest	145358	-21	aten_r7power_po	09:40:16	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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