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 highest latencies:

System rack7slot2.osadl.org (updated Mon Jul 13, 2026 12:44:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3441018	99	113	102,9	cyclictest	53	-21	kswapd0	11:15:34	1
3441017	99	94	86,6	cyclictest	3456397	-21	kworker/u4:6+events_unbound	08:30:09	0
3441017	99	90	82,6	cyclictest	3414775	-21	kworker/u4:10+events_unbound	07:19:51	0
3441018	99	85	74,8	cyclictest	3470472	-21	kworker/u4:10+events_unbound	09:10:18	1
3441018	99	76	1,25	cyclictest	3558126	-21	ssh	10:45:30	1
3441018	99	75	65,7	cyclictest	3568591	-21	kworker/u4:9+events_unbound	11:00:33	1
3441018	99	75	33,39	cyclictest	3508459	-21	fschecks_count	09:50:20	1
3441017	99	75	68,5	cyclictest	3568590	-21	kworker/u4:6+events_unbound	11:00:04	0
3441018	99	74	54,8	cyclictest	3564061	-21	kworker/u4:8+events_unbound	10:55:34	1
3441017	99	74	58,5	cyclictest	3519215	-21	kworker/u4:0+events_unbound	10:05:22	0
3441018	99	72	35,34	cyclictest	3637919	-21	switchtime	12:15:42	1
3441018	99	72	33,5	cyclictest	0	-21	swapper/1	12:35:25	1
3441018	99	72	31,36	cyclictest	0	-21	swapper/1	11:12:51	1
3441018	99	71	59,8	cyclictest	3514688	-21	kworker/u4:2+events_unbound	10:00:23	1
3441018	99	70	37,30	cyclictest	0	-21	swapper/1	07:35:40	1
3441018	99	70	36,31	cyclictest	3646535	-21	sendmail_mailqu	12:25:38	1
3441018	99	70	35,32	cyclictest	3554030	-21	timerandwakeup	10:40:38	1
3441017	99	70	63,5	cyclictest	3474244	-21	kworker/u4:2+events_unbound	09:15:19	0
3441018	99	69	39,28	cyclictest	3481394	-21	aten_r7power_vo	09:20:19	1
3441018	99	69	34,31	cyclictest	0	-21	swapper/1	10:06:44	1
3441018	99	69	30,6	cyclictest	0	-21	swapper/1	11:45:17	1
3441018	99	69	30,6	cyclictest	0	-21	swapper/1	11:45:16	1
3441018	99	68	34,31	cyclictest	0	-21	swapper/1	09:40:20	1
3441017	99	68	60,6	cyclictest	3446094	-21	kworker/u4:8+events_unbound	07:30:00	0
3441018	99	67	57,7	cyclictest	3458951	-21	kworker/u4:9+events_unbound	08:55:15	1
3441018	99	67	4,28	cyclictest	3513323	-21	ssh	09:55:28	1
3441018	99	66	5,17	cyclictest	3642090	-21	ntpq	12:20:36	1
3441018	99	66	32,6	cyclictest	0	-21	swapper/1	09:30:31	1
3441018	99	66	32,6	cyclictest	0	-21	swapper/1	09:30:30	1
3441018	99	66	30,5	cyclictest	3620117	-21	ssh	11:55:37	1
3441018	99	66	28,4	cyclictest	0	-21	swapper/1	09:05:24	1
3441018	99	66	27,6	cyclictest	0	-21	swapper/1	11:05:47	1
3441018	99	66	25,6	cyclictest	0	-21	swapper/1	12:30:14	1
3441018	99	66	25,10	cyclictest	3449782	-21	ls	07:40:38	1
3441018	99	66	25,10	cyclictest	3449782	-21	ls	07:40:37	1
3441018	99	65	33,29	cyclictest	3470098	-21	grep	09:00:37	1
3441018	99	65	29,5	cyclictest	0	-21	swapper/1	10:15:01	1
3441018	99	65	22,10	cyclictest	0	-21	swapper/1	08:45:22	1
3441017	99	65	58,5	cyclictest	3451204	-21	kworker/u4:3+events_unbound	08:05:02	0
3441017	99	65	51,12	cyclictest	53	-21	kswapd0	12:05:06	0
3441018	99	64	56,6	cyclictest	3487960	-21	kworker/u4:8+events_unbound	09:35:21	1
3441018	99	64	32,29	cyclictest	0	-21	swapper/1	12:05:26	1
3441018	99	63	33,27	cyclictest	0	-21	swapper/1	08:30:19	1
3441018	99	63	29,6	cyclictest	0	-21	swapper/1	11:35:37	1
3441017	99	63	47,10	cyclictest	3553763	-21	ntpq	10:40:32	0
3441018	99	62	29,5	cyclictest	0	-21	swapper/1	11:25:38	1
3441018	99	62	28,8	cyclictest	37	-21	kcompactd0	10:35:34	1
3441018	99	62	28,6	cyclictest	0	-21	swapper/1	11:40:34	1
3441018	99	62	27,6	cyclictest	0	-21	swapper/1	10:25:28	1
3441017	99	62	7,51	cyclictest	3620078	-21	rm	11:55:36	0
3441017	99	62	49,9	cyclictest	37	-21	kcompactd0	11:30:38	0
3441018	99	61	30,4	cyclictest	3562631	-21	sh	10:50:31	1
3441017	99	61	40,16	cyclictest	0	-21	swapper/0	12:20:23	0
3441017	99	61	2,6	cyclictest	3632141	-21	apt-get	12:10:10	0
3441017	99	61	2,6	cyclictest	3632141	-21	apt-get	12:10:09	0
3441018	99	60	8,18	cyclictest	3471863	-21	diskmemload	12:05:01	1
3441018	99	60	55,3	cyclictest	3447367	-21	kworker/u4:12+events_unbound	07:54:56	1
3441018	99	60	30,27	cyclictest	0	-21	swapper/1	12:10:23	1
3441018	99	60	30,27	cyclictest	0	-21	swapper/1	12:10:23	1
3441018	99	58	49,6	cyclictest	3616042	-21	unixbench-2d	11:50:42	1
3441018	99	58	26,8	cyclictest	3452909	-21	cpu	07:55:21	1
3441017	99	58	8,13	cyclictest	3517078	-21	apt-get	10:00:16	0
3441017	99	57	50,5	cyclictest	3544257	-21	/usr/sbin/munin	10:30:20	0
3441017	99	57	46,6	cyclictest	3501688	-21	kworker/u4:12+events_unbound	09:45:03	0
3441017	99	57	45,8	cyclictest	3568275	-21	ssh	10:56:39	0
3441017	99	56	43,7	cyclictest	0	-21	swapper/0	10:15:14	0
3441017	99	55	48,5	cyclictest	3458951	-21	kworker/u4:9+events_unbound	08:53:44	0
3441017	99	55	34,18	cyclictest	0	-21	swapper/0	11:40:40	0
3441017	99	55	33,17	cyclictest	3471863	-21	diskmemload	09:10:26	0
3441017	99	54	50,3	cyclictest	3460246	-21	kworker/u4:12-rpciod	08:56:45	0
3441017	99	54	45,6	cyclictest	0	-21	swapper/0	09:20:28	0
3441017	99	54	39,6	cyclictest	3448635	-21	kworker/u4:17+events_unbound	07:55:47	0
3441017	99	53	45,6	cyclictest	3603733	-21	kworker/u4:0+events_unbound	11:37:46	0
3441017	99	53	45,6	cyclictest	3469168	-21	kworker/u4:0+events_unbound	09:00:04	0
3441017	99	53	44,7	cyclictest	0	-21	swapper/0	12:30:32	0
3441017	99	53	32,15	cyclictest	0	-21	swapper/0	09:05:12	0
3441017	99	52	45,5	cyclictest	3634438	-21	kworker/u4:11+events_unbound	12:29:46	0
3441017	99	51	42,6	cyclictest	3623742	-21	aten_r7power_en	12:00:15	0
3441017	99	51	30,18	cyclictest	0	-21	swapper/0	11:25:19	0
3441017	99	50	43,5	cyclictest	3610794	-21	fschecks_time	11:45:22	0
3441017	99	50	43,5	cyclictest	3610794	-21	fschecks_time	11:45:22	0
3441017	99	50	42,5	cyclictest	3615803	-21	sendmail_mailqu	11:50:39	0
3441017	99	50	42,5	cyclictest	3588516	-21	aten_r7power_cu	11:20:18	0
3441018	99	49	40,6	cyclictest	3530901	-21	ssh	10:15:21	1
3441018	99	49	39,5	cyclictest	0	-21	swapper/1	11:30:21	1
3441017	99	49	42,5	cyclictest	3444821	-21	kworker/u4:14+events_unbound	07:50:01	0
3441017	99	49	42,5	cyclictest	3438506	-21	kworker/u4:1+events_unbound	07:10:03	0
3441017	99	49	40,6	cyclictest	3539569	-21	/usr/sbin/munin	10:25:17	0
3441017	99	49	40,6	cyclictest	3458835	-21	unixbench_multi	08:15:42	0
3441017	99	48	41,5	cyclictest	0	-21	swapper/0	09:25:19	0
3441017	99	48	40,6	cyclictest	3454754	-21	grep	08:00:39	0
3441018	99	47	40,5	cyclictest	3477093	-21	basename	09:15:21	1
3441017	99	47	42,4	cyclictest	3458938	-21	kworker/u4:8+events_unbound	08:25:02	0
3441017	99	47	41,5	cyclictest	3447366	-21	kworker/u4:11+events_unbound	07:43:46	0
3441017	99	47	41,5	cyclictest	3447366	-21	kworker/u4:11+events_unbound	07:43:45	0
3441017	99	47	40,5	cyclictest	3448635	-21	kworker/u4:17+events_unbound	08:35:03	0
3441017	99	47	25,20	cyclictest	3491019	-21	collect2	09:30:35	0
3441017	99	47	25,20	cyclictest	3491019	-21	collect2	09:30:35	0
3441018	99	46	38,5	cyclictest	3532917	-21	kworker/u4:9-xprtiod	10:20:34	1
3441017	99	46	37,6	cyclictest	0	-21	swapper/0	10:50:29	0
3441018	99	45	39,4	cyclictest	3459920	-21	sendmail_mailqu	08:20:41	1
3441018	99	45	36,6	cyclictest	3588726	-21	/usr/sbin/munin	11:20:21	1
3441018	99	45	30,10	cyclictest	0	-21	swapper/1	08:25:39	1
3441017	99	45	37,6	cyclictest	3526496	-21	gltestperf	10:10:20	0
3441017	99	45	37,6	cyclictest	3464376	-21	aten_r7power_po	08:40:14	0
3441017	99	45	37,6	cyclictest	3450193	-21	aten_r7power_en	07:45:17	0
3441017	99	45	35,8	cyclictest	3535186	-21	aten_r7power_po	10:20:16	0
3441017	99	45	33,6	cyclictest	0	-21	swapper/0	12:15:12	0
3441017	99	45	29,11	cyclictest	3548749	-21	fschecks_count	10:35:19	0
3441017	99	45	24,18	cyclictest	0	-21	swapper/0	09:40:23	0
3441018	99	44	38,4	cyclictest	3456576	-21	systemd	08:10:02	1
3441018	99	44	37,5	cyclictest	3545041	-21	cat	10:30:39	1
3441018	99	44	34,7	cyclictest	3456170	-21	threads	08:05:39	1
3441017	99	44	36,6	cyclictest	3443857	-21	aten_r7power_po	07:20:18	0
3441017	99	44	36,5	cyclictest	3495671	-21	sh	09:35:37	0
3441017	99	44	36,5	cyclictest	3456920	-21	fschecks_time	08:10:19	0
3441017	99	44	16,5	cyclictest	17	1	rcu_preempt	11:11:19	0
3441018	99	43	36,5	cyclictest	3465391	-21	grep	08:45:00	1
3441018	99	43	35,6	cyclictest	3503772	-21	aten_r7power_po	09:45:15	1
3441018	99	43	35,5	cyclictest	3438506	-21	kworker/u4:1+events_unbound	07:10:02	1
3441018	99	43	34,7	cyclictest	3445283	-21	fschecks_count	07:25:22	1
3441017	99	43	37,4	cyclictest	3585036	-21	sendmail_mailqu	11:15:39	0
3441017	99	43	36,5	cyclictest	3561576	-21	latency_hist	10:50:01	0
3441017	99	43	33,6	cyclictest	0	-21	swapper/0	09:55:12	0
3441018	99	42	36,4	cyclictest	0	-21	swapper/1	09:25:20	1
3441018	99	42	30,9	cyclictest	0	-21	swapper/1	07:20:18	1
3441018	99	42	29,9	cyclictest	3446993	-21	ps	07:30:36	1
3441017	99	42	4,24	cyclictest	3471863	-21	diskmemload	11:05:12	0
3441017	99	42	31,8	cyclictest	3446355	-21	aten_r7power_en	07:30:17	0
3441017	99	42	21,19	cyclictest	0	-21	swapper/0	08:45:22	0
3441018	99	41	35,4	cyclictest	3467144	-21	fschecks_time	08:50:21	1
3441018	99	41	34,5	cyclictest	3450373	-21	fschecks_count	07:45:20	1
3441018	99	41	32,7	cyclictest	0	-21	swapper/1	08:00:25	1
3441017	99	41	35,4	cyclictest	3497099	-21	kworker/u4:0-events_unbound	09:50:21	0
3441018	99	40	32,4	cyclictest	0	-21	swapper/1	07:15:38	1
3441017	99	40	32,6	cyclictest	3459259	-21	aten_r7power_en	08:20:17	0
3441017	99	40	31,6	cyclictest	3447612	-21	aten_r7power_cu	07:35:16	0
3441017	99	40	31,6	cyclictest	0	-21	swapper/0	12:35:40	0
3441018	99	39	27,8	cyclictest	0	-21	swapper/1	07:10:33	1
3441018	99	38	30,6	cyclictest	0	-21	swapper/1	08:35:20	1
3441018	99	37	28,6	cyclictest	0	-21	swapper/1	08:15:32	1
3441017	99	33	25,5	cyclictest	0	-21	swapper/0	07:10:01	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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