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 792 highest latencies:

System rack7slot2.osadl.org (updated Mon Feb 02, 2026 00:44:09)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2952778	99	118	107,7	cyclictest	2994452	-21	kworker/u4:6+events_unbound	21:26:09	0
2952778	99	108	101,5	cyclictest	2953995	-21	kworker/u4:10+events_unbound	19:36:01	0
2952778	99	106	98,6	cyclictest	3084913	-21	kworker/u4:9+events_unbound	23:26:18	0
2952779	99	104	97,5	cyclictest	3011479	-21	kworker/u4:8+events_unbound	22:01:10	1
2952779	99	104	96,6	cyclictest	3045649	-21	kworker/u4:2+events_unbound	22:36:13	1
2952778	99	102	75,21	cyclictest	54	-21	kswapd0	00:25:12	0
2952778	99	101	94,5	cyclictest	3128272	-21	kworker/u4:5+events_unbound	23:58:24	0
2952778	99	100	92,6	cyclictest	3110571	-21	kworker/u4:14+events_unbound	23:53:14	0
2952778	99	97	89,6	cyclictest	3137084	-21	kworker/u4:4+events_unbound	00:08:43	0
2952778	99	95	81,12	cyclictest	2953996	-21	kworker/u4:11+events_unbound	19:21:00	0
2952778	99	95	57,32	cyclictest	54	-21	kswapd0	00:15:10	0
2952778	99	93	86,5	cyclictest	2998995	-21	kworker/u4:9+events_unbound	21:31:08	0
2952778	99	93	62,28	cyclictest	54	-21	kswapd0	22:40:10	0
2952778	99	91	84,5	cyclictest	3032824	-21	kworker/u4:5+events_unbound	22:21:12	0
2952778	99	84	77,4	cyclictest	0	-21	swapper/0	21:15:31	0
2952778	99	83	74,7	cyclictest	2966720	-21	kworker/u4:14+events_unbound	21:46:09	0
2952778	99	82	75,5	cyclictest	3084913	-21	kworker/u4:9+events_unbound	23:11:17	0
2952778	99	81	74,5	cyclictest	3045653	-21	kworker/u4:10+events_unbound	22:46:15	0
2952779	99	76	25,46	cyclictest	0	-21	swapper/1	22:50:13	1
2952779	99	74	41,30	cyclictest	2952775	-21	cyclictest	23:41:22	1
2952779	99	71	67,2	cyclictest	2953989	-21	kworker/u4:3+events_unbound	19:26:01	1
2952779	99	71	5,16	cyclictest	2988836	-21	ssh	21:15:33	1
2952779	99	70	34,32	cyclictest	0	-21	swapper/1	22:15:23	1
2952779	99	69	36,30	cyclictest	0	-21	swapper/1	22:30:33	1
2952779	99	69	32,35	cyclictest	3143557	-21	aten_r7power_cu	00:15:21	1
2952779	99	69	2,23	cyclictest	3018799	-21	ntpq	21:50:29	1
2952779	99	68	39,27	cyclictest	3164939	-21	latency_hist	00:40:02	1
2952779	99	68	31,34	cyclictest	3126927	-21	open_files	23:55:35	1
2952778	99	68	61,5	cyclictest	2964187	-21	kworker/u4:6+events_unbound	20:11:04	0
2952779	99	67	49,6	cyclictest	3150322	-21	kworker/u4:11+events_unbound	00:33:50	1
2952779	99	67	37,28	cyclictest	2963249	-21	aten_r7power_vo	19:50:23	1
2952779	99	67	32,32	cyclictest	3014933	-21	vmstat	21:45:40	1
2952779	99	66	7,16	cyclictest	0	-21	swapper/1	20:00:30	1
2952779	99	66	7,16	cyclictest	0	-21	swapper/1	20:00:30	1
2952779	99	66	59,5	cyclictest	3076128	-21	kworker/u4:9+events_unbound	23:01:15	1
2952779	99	66	42,21	cyclictest	3083551	-21	ld	23:05:32	1
2952778	99	66	58,6	cyclictest	2964188	-21	kworker/u4:7+events_unbound	20:01:02	0
2952778	99	66	58,6	cyclictest	2964188	-21	kworker/u4:7+events_unbound	20:01:02	0
2952779	99	65	3,18	cyclictest	3048771	-21	ssh	22:25:35	1
2952779	99	65	31,30	cyclictest	0	-21	swapper/1	23:10:36	1
2952779	99	65	21,5	cyclictest	0	-21	swapper/1	21:25:36	1
2952779	99	64	34,27	cyclictest	2983355	-21	latency_hist	21:10:02	1
2952779	99	64	34,27	cyclictest	2952775	-21	cyclictest	20:00:00	1
2952779	99	64	32,29	cyclictest	3121843	-21	aten_r7power_po	23:50:16	1
2952779	99	64	28,32	cyclictest	0	-21	swapper/1	20:10:01	1
2952779	99	64	24,37	cyclictest	0	-21	swapper/1	21:35:00	1
2952779	99	64	20,6	cyclictest	0	-21	swapper/1	21:00:29	1
2952779	99	64	1,14	cyclictest	3139838	-21	ssh	00:10:29	1
2952779	99	63	31,28	cyclictest	0	-21	swapper/1	21:20:29	1
2952779	99	63	28,32	cyclictest	0	-21	swapper/1	00:25:21	1
2952779	99	63	27,32	cyclictest	0	-21	swapper/1	22:15:01	1
2952779	99	63	26,34	cyclictest	0	-21	swapper/1	23:35:35	1
2952779	99	63	25,35	cyclictest	626	-21	munin-node	23:20:37	1
2952779	99	62	49,8	cyclictest	2961602	-21	modprobe	19:45:01	1
2952779	99	62	29,29	cyclictest	0	-21	swapper/1	00:20:34	1
2952779	99	62	26,32	cyclictest	2974326	-21	idleruntime-cro	20:35:00	1
2952779	99	62	26,32	cyclictest	0	-21	swapper/1	21:40:23	1
2952779	99	62	26,31	cyclictest	0	-21	swapper/1	22:05:30	1
2952779	99	62	25,34	cyclictest	0	-21	swapper/1	19:35:38	1
2952779	99	62	17,7	cyclictest	27	1	ktimers/1	23:25:38	1
2952778	99	62	55,5	cyclictest	3106190	-21	kworker/u4:11+events_unbound	23:35:00	0
2952779	99	61	7,15	cyclictest	1068	-21	snmpd	22:21:08	1
2952779	99	61	28,30	cyclictest	2971787	-21	cron	20:25:00	1
2952779	99	61	28,30	cyclictest	0	-21	swapper/1	22:40:30	1
2952779	99	61	28,29	cyclictest	0	-21	swapper/1	00:00:28	1
2952779	99	61	27,32	cyclictest	0	-21	swapper/1	22:55:11	1
2952779	99	61	26,32	cyclictest	0	-21	swapper/1	21:10:30	1
2952779	99	61	26,32	cyclictest	0	-21	swapper/1	21:10:30	1
2952779	99	61	25,33	cyclictest	0	-21	swapper/1	23:30:17	1
2952779	99	61	24,34	cyclictest	0	-21	swapper/1	23:45:18	1
2952778	99	61	48,7	cyclictest	3076127	-21	kworker/u4:5+events_unbound	22:57:59	0
2952779	99	60	28,26	cyclictest	2975630	-21	kworker/u4:21-rpciod	20:50:02	1
2952779	99	60	25,31	cyclictest	0	-21	swapper/1	22:00:02	1
2952779	99	60	23,4	cyclictest	0	-21	swapper/1	22:45:30	1
2952778	99	60	53,5	cyclictest	3110571	-21	kworker/u4:14+events_unbound	00:00:59	0
2952778	99	60	52,6	cyclictest	3045651	-21	kworker/u4:4+events_unbound	22:26:13	0
2952778	99	59	42,6	cyclictest	3084913	-21	kworker/u4:9+events_unbound	23:23:59	0
2952779	99	58	25,30	cyclictest	0	-21	swapper/1	20:55:20	1
2952779	99	58	20,7	cyclictest	0	-21	swapper/1	19:25:02	1
2952779	99	58	20,35	cyclictest	0	-21	swapper/1	20:25:38	1
2952778	99	58	51,5	cyclictest	2951521	-21	kworker/u4:9+events_unbound	20:05:02	0
2952778	99	58	50,6	cyclictest	3020421	-21	kworker/u4:16+events_unbound	21:57:00	0
2952778	99	58	46,6	cyclictest	3054590	-21	kworker/u4:4+events_unbound	22:33:43	0
2952779	99	57	22,6	cyclictest	0	-21	swapper/1	19:50:00	1
2952779	99	56	23,4	cyclictest	0	-21	swapper/1	19:30:12	1
2952779	99	56	22,4	cyclictest	0	-21	swapper/1	20:15:20	1
2952778	99	56	2,25	cyclictest	3026131	-21	grep	22:00:15	0
2952779	99	55	36,12	cyclictest	2994452	-21	kworker/u4:6-rpciod	21:36:36	1
2952779	99	55	18,5	cyclictest	0	-21	swapper/1	23:15:33	1
2952778	99	55	48,5	cyclictest	3015944	-21	kworker/u4:13+events_unbound	21:54:00	0
2952778	99	55	42,9	cyclictest	54	-21	kswapd0	21:40:01	0
2952779	99	54	24,26	cyclictest	0	-21	swapper/1	20:10:22	1
2952779	99	54	19,4	cyclictest	0	-21	swapper/1	00:05:12	1
2952778	99	54	47,5	cyclictest	2971778	-21	kworker/u4:18+events_unbound	21:01:08	0
2952778	99	54	47,5	cyclictest	2953994	-21	kworker/u4:8+events_unbound	21:09:01	0
2952778	99	54	45,7	cyclictest	3117076	-21	ssh	23:45:00	0
2952779	99	53	24,3	cyclictest	0	-21	swapper/1	20:35:13	1
2952778	99	53	48,4	cyclictest	3136437	-21	kworker/u4:1+events_unbound	00:11:59	0
2952778	99	53	46,5	cyclictest	2953881	-21	kworker/u4:0+events_unbound	19:17:01	0
2952778	99	53	45,6	cyclictest	3011479	-21	kworker/u4:8-rpciod	22:10:16	0
2952778	99	53	42,5	cyclictest	2964187	-21	kworker/u4:6+events_unbound	20:17:00	0
2952778	99	53	39,6	cyclictest	2966720	-21	kworker/u4:14+events_unbound	20:51:01	0
2952778	99	53	32,18	cyclictest	0	-21	swapper/0	00:30:22	0
2952779	99	52	24,5	cyclictest	0	-21	swapper/1	19:20:00	1
2952778	99	52	45,5	cyclictest	3076127	-21	kworker/u4:5+events_unbound	23:00:59	0
2952778	99	52	44,6	cyclictest	3089296	-21	kworker/u4:7+events_unbound	23:15:44	0
2952778	99	52	44,6	cyclictest	2951521	-21	kworker/u4:9+events_unbound	20:27:42	0
2952778	99	52	43,7	cyclictest	3140834	-21	kworker/u4:6-rpciod	00:25:01	0
2952779	99	51	24,25	cyclictest	0	-21	swapper/1	20:45:00	1
2952779	99	50	18,10	cyclictest	2952953	-21	wget	19:10:16	1
2952778	99	49	42,5	cyclictest	3120065	-21	sh	23:47:52	0
2952778	99	49	41,6	cyclictest	2986035	-21	kworker/u4:2+events_unbound	21:13:00	0
2952778	99	49	41,6	cyclictest	2986035	-21	kworker/u4:2+events_unbound	21:13:00	0
2952778	99	49	37,9	cyclictest	3054590	-21	kworker/u4:4-rpciod	22:35:18	0
2952778	99	49	28,18	cyclictest	2974298	-21	cron	20:35:00	0
2952778	99	49	27,14	cyclictest	2974316	-21	apt-get	20:35:10	0
2952778	99	48	39,7	cyclictest	2996688	-21	latency_hist	21:25:01	0
2952778	99	47	40,6	cyclictest	2951521	-21	kworker/u4:9+events_unbound	19:48:59	0
2952778	99	47	40,5	cyclictest	2950303	-21	kworker/u4:6+events_unbound	19:10:01	0
2952778	99	47	38,7	cyclictest	3083885	-21	cat	23:05:42	0
2952778	99	47	37,8	cyclictest	3109137	-21	gltestperf	23:35:22	0
2952778	99	46	40,4	cyclictest	2965142	-21	cat	19:55:35	0
2952778	99	46	39,6	cyclictest	2942808	-21	kworker/u4:7+events_unbound	19:33:00	0
2952778	99	46	39,5	cyclictest	3162053	-21	unixbench_singl	00:35:38	0
2952778	99	46	39,5	cyclictest	2973034	-21	kworker/u4:20+events_unbound	20:47:00	0
2952778	99	46	35,6	cyclictest	0	-21	swapper/0	19:50:11	0
2952778	99	45	39,5	cyclictest	3032164	-21	kworker/u4:3+events_unbound	22:06:54	0
2952778	99	45	39,4	cyclictest	2953997	-21	kworker/u4:12+events_unbound	19:28:58	0
2952778	99	45	37,5	cyclictest	3070167	-21	fschecks_time	22:50:20	0
2952778	99	44	37,4	cyclictest	0	-21	swapper/0	22:15:20	0
2952778	99	44	35,6	cyclictest	2970956	-21	fschecks_count	20:20:21	0
2952778	99	43	34,4	cyclictest	2953994	-21	kworker/u4:8+events_unbound	19:43:59	0
2952778	99	41	34,5	cyclictest	2976111	-21	fschecks_count	20:40:19	0
2952778	99	41	33,5	cyclictest	0	-21	swapper/0	21:40:28	0
2952779	99	40	33,5	cyclictest	2978699	-21	fschecks_time	20:50:18	1
2952778	99	40	21,5	cyclictest	17	1	rcu_preempt	20:55:19	0
2952778	99	38	29,6	cyclictest	0	-21	swapper/0	19:10:01	0
2952779	99	36	9,17	cyclictest	2952756	-21	munin-run	19:10:01	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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