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 Sat Jul 04, 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
3456938	99	113	101,9	cyclictest	3659290	-21	kworker/u4:8+events_unbound	12:36:10	1
3456937	99	101	57,27	cyclictest	53	-21	kswapd0	12:25:14	0
3456937	99	99	92,5	cyclictest	3517815	-21	kworker/u4:10+events_unbound	09:45:40	0
3456938	99	93	80,9	cyclictest	3463281	-21	kworker/u4:13+events_unbound	09:15:01	1
3456938	99	93	80,9	cyclictest	3463281	-21	kworker/u4:13+events_unbound	09:15:01	1
3456938	99	78	71,5	cyclictest	3628646	-21	kworker/u4:8+events_unbound	11:51:05	1
3456938	99	76	70,4	cyclictest	3481364	-21	kworker/u4:23+events_unbound	08:50:33	1
3456938	99	76	68,6	cyclictest	3549066	-21	kworker/u4:1+events_unbound	11:26:00	1
3456938	99	75	68,5	cyclictest	3526218	-21	kworker/u4:5+events_unbound	10:45:49	1
3456938	99	74	67,5	cyclictest	3473505	-21	kworker/u4:9+events_unbound	08:20:02	1
3456938	99	74	65,7	cyclictest	3624185	-21	kworker/u4:2+events_unbound	11:56:04	1
3456938	99	73	65,6	cyclictest	3561971	-21	kworker/u4:12+events_unbound	10:40:48	1
3456937	99	73	63,7	cyclictest	3490203	-21	kworker/u4:4+events_unbound	09:25:39	0
3456938	99	72	65,5	cyclictest	3579935	-21	kworker/u4:11+events_unbound	11:15:58	1
3456938	99	71	64,5	cyclictest	3549066	-21	kworker/u4:1+events_unbound	10:50:51	1
3456938	99	71	64,5	cyclictest	3472235	-21	kworker/u4:8+events_unbound	08:10:23	1
3456938	99	70	60,7	cyclictest	53	-21	kswapd0	10:05:01	1
3456938	99	68	59,6	cyclictest	3474866	-21	kworker/u4:17+events_unbound	08:30:29	1
3456938	99	66	57,6	cyclictest	3474866	-21	kworker/u4:17+events_unbound	09:05:37	1
3456937	99	66	57,6	cyclictest	3529756	-21	mailstats	09:55:38	0
3456937	99	63	44,11	cyclictest	3619703	-21	kworker/u4:7-events_power_efficient	11:41:10	0
3456938	99	62	51,7	cyclictest	53	-21	kswapd0	12:05:19	1
3456938	99	62	51,7	cyclictest	53	-21	kswapd0	12:05:18	1
3456937	99	62	50,8	cyclictest	3456936	-21	cyclictest	11:38:50	0
3456938	99	60	51,7	cyclictest	3468389	-21	kworker/u4:2+events_unbound	07:55:13	1
3456937	99	60	51,7	cyclictest	3565547	-21	switchtime	10:35:40	0
3456938	99	58	50,6	cyclictest	3566459	-21	kworker/u4:0+events_unbound	10:40:00	1
3456938	99	58	4,42	cyclictest	3543180	-21	ssh	10:10:38	1
3456937	99	58	52,4	cyclictest	15	1	ktimers/0	07:51:45	0
3456938	99	57	48,7	cyclictest	3623474	-21	ssh	11:41:02	1
3456937	99	57	48,7	cyclictest	3658727	-21	sshd	12:21:06	0
3456937	99	57	44,10	cyclictest	3604851	-21	kernelversion	11:20:24	0
3456938	99	56	49,5	cyclictest	3579935	-21	kworker/u4:11+events_unbound	11:10:56	1
3456938	99	56	48,6	cyclictest	3469663	-21	kworker/u4:10+events_unbound	08:05:17	1
3456938	99	56	46,7	cyclictest	3583566	-21	sd-accept	10:55:51	1
3456937	99	56	37,16	cyclictest	3570171	-21	unixbench_multi	10:40:42	0
3456937	99	56	35,19	cyclictest	3648904	-21	gltestperf	12:10:26	0
3456938	99	55	7,40	cyclictest	3661565	-21	ssh	12:25:12	1
3456938	99	55	47,6	cyclictest	3504038	-21	kworker/u4:1+events_unbound	09:30:00	1
3456937	99	55	32,21	cyclictest	3670384	-21	aten_r7power_cu	12:35:16	0
3456938	99	54	47,5	cyclictest	3493886	-21	unixbench_multi	09:15:39	1
3456938	99	54	44,7	cyclictest	3504038	-21	kworker/u4:1+events_unbound	09:33:00	1
3456937	99	54	44,8	cyclictest	3645916	-21	kworker/u4:12-rpciod	12:30:18	0
3456937	99	54	36,5	cyclictest	3543519	-21	diskmemload	10:10:44	0
3456937	99	53	44,7	cyclictest	3480935	-21	sd-accept	08:40:32	0
3456937	99	53	38,9	cyclictest	3647294	-21	ssh	12:08:51	0
3456937	99	53	38,9	cyclictest	3647294	-21	ssh	12:08:50	0
3456937	99	53	33,17	cyclictest	0	-21	swapper/0	09:50:35	0
3456938	99	52	45,5	cyclictest	3579931	-21	kworker/u4:8+events_unbound	11:00:53	1
3456938	99	52	43,6	cyclictest	0	-21	swapper/1	09:55:31	1
3456938	99	52	40,9	cyclictest	3482660	-21	cron	08:50:01	1
3456938	99	52	35,5	cyclictest	3615227	-21	kworker/u4:0+events_unbound	11:36:01	1
3456937	99	52	45,5	cyclictest	3578794	-21	threads	10:50:38	0
3456937	99	52	37,13	cyclictest	3617203	-21	munin-plugin-st	11:34:59	0
3456937	99	52	32,17	cyclictest	0	-21	swapper/0	11:00:26	0
3456937	99	52	23,20	cyclictest	256	50	irq/23-42890000.ethernet	08:20:10	0
3456937	99	52	11,13	cyclictest	3468594	-21	apt-get	07:55:13	0
3456937	99	51	44,5	cyclictest	3534261	-21	mailstats	10:00:35	0
3456937	99	51	31,18	cyclictest	0	-21	swapper/0	11:55:43	0
3456937	99	51	31,17	cyclictest	0	-21	swapper/0	11:10:39	0
3456938	99	50	43,5	cyclictest	3591555	-21	/usr/sbin/munin	11:05:21	1
3456938	99	50	41,6	cyclictest	3564271	-21	latency_hist	10:35:02	1
3456938	99	50	39,7	cyclictest	3555291	-21	cron	10:24:59	1
3456938	99	50	38,9	cyclictest	0	-21	swapper/1	11:20:25	1
3456937	99	50	30,17	cyclictest	0	-21	swapper/0	11:25:28	0
3456938	99	49	42,5	cyclictest	3473509	-21	kworker/u4:15+events_unbound	09:00:00	1
3456938	99	49	41,5	cyclictest	3547422	-21	ldconfig	10:15:28	1
3456938	99	49	36,11	cyclictest	3555829	-21	cpu	10:25:20	1
3456937	99	49	9,31	cyclictest	3473540	-21	apt-get	08:15:10	0
3456937	99	49	8,8	cyclictest	3573299	-21	apt-get	10:45:14	0
3456937	99	49	42,5	cyclictest	3560628	-21	/usr/sbin/munin	10:30:21	0
3456937	99	49	40,6	cyclictest	3493616	-21	sendmail_mailqu	09:15:37	0
3456938	99	48	42,4	cyclictest	3468391	-21	kworker/u4:5+events_unbound	09:05:01	1
3456938	99	48	40,6	cyclictest	3455665	-21	kworker/u4:4+events_unbound	07:20:08	1
3456938	99	48	39,7	cyclictest	3456870	-21	kworker/u4:9+events_unbound	07:35:00	1
3456938	99	48	39,6	cyclictest	3627371	-21	switchtime	11:45:42	1
3456938	99	48	35,9	cyclictest	3507934	-21	kworker/u4:9-nfsiod	09:45:31	1
3456937	99	48	43,3	cyclictest	15	1	ktimers/0	09:06:51	0
3456937	99	48	41,5	cyclictest	3464589	-21	sendmail	07:40:00	0
3456937	99	48	41,4	cyclictest	0	-21	swapper/0	10:20:12	0
3456937	99	48	38,8	cyclictest	3473329	-21	timerwakeupswit	08:10:36	0
3456937	99	48	38,7	cyclictest	3501376	-21	cron	09:25:00	0
3456938	99	47	40,5	cyclictest	3467149	-21	idleruntime-cro	07:49:59	1
3456938	99	47	36,7	cyclictest	0	-21	swapper/1	12:15:23	1
3456938	99	47	36,7	cyclictest	0	-21	swapper/1	12:15:22	1
3456937	99	47	7,15	cyclictest	3459671	-21	apt-get	07:20:11	0
3456937	99	47	40,5	cyclictest	3653732	-21	awk	12:15:37	0
3456937	99	47	40,5	cyclictest	3653732	-21	awk	12:15:36	0
3456937	99	47	37,7	cyclictest	3582273	-21	aten_r7power_po	10:55:18	0
3456937	99	47	24,4	cyclictest	15	1	ktimers/0	10:10:00	0
3456938	99	46	39,5	cyclictest	3458739	-21	gltestperf	07:15:20	1
3456938	99	46	38,5	cyclictest	3515091	-21	ssh	09:40:01	1
3456938	99	46	37,7	cyclictest	3643655	-21	latency_hist	12:05:01	1
3456938	99	46	37,6	cyclictest	3455666	-21	kworker/u4:8+events_unbound	07:10:06	1
3456938	99	46	37,6	cyclictest	3455666	-21	kworker/u4:8+events_unbound	07:10:06	1
3456938	99	46	36,7	cyclictest	3652580	-21	latency_hist	12:15:01	1
3456937	99	46	40,5	cyclictest	3480067	-21	kworker/u4:19+events_unbound	08:59:46	0
3456937	99	46	11,32	cyclictest	3511449	-21	ssh	09:35:28	0
3456938	99	45	37,6	cyclictest	3463281	-21	kworker/u4:13+events_unbound	07:50:09	1
3456938	99	45	35,7	cyclictest	0	-21	swapper/1	09:50:29	1
3456938	99	45	33,9	cyclictest	3497248	-21	aten2__	09:20:16	1
3456938	99	45	30,10	cyclictest	3465862	-21	modprobe	07:45:01	1
3456937	99	45	38,5	cyclictest	3630811	-21	aten_r7power_po	11:50:16	0
3456937	99	45	38,5	cyclictest	3547976	-21	grep	10:15:41	0
3456937	99	45	19,7	cyclictest	0	-21	swapper/0	11:45:18	0
3456938	99	44	35,6	cyclictest	0	-21	swapper/1	11:30:17	1
3456937	99	44	35,7	cyclictest	3461202	-21	fschecks_count	07:25:18	0
3456937	99	44	34,8	cyclictest	3556169	-21	if_eth0	10:25:24	0
3456937	99	44	33,7	cyclictest	3463281	-21	kworker/u4:13-nfsiod	07:45:36	0
3456938	99	43	36,5	cyclictest	3472233	-21	kworker/u4:6+events_unbound	08:30:01	1
3456938	99	43	24,7	cyclictest	3463281	-21	kworker/u4:13+events_unbound	08:25:00	1
3456937	99	43	36,5	cyclictest	3640067	-21	irqstats	12:00:21	0
3456937	99	43	35,6	cyclictest	3506696	-21	gltestperf	09:30:23	0
3456937	99	43	35,6	cyclictest	3457133	-21	aten_r7power_cu	07:10:17	0
3456937	99	43	35,6	cyclictest	3457133	-21	aten_r7power_cu	07:10:16	0
3456937	99	43	34,6	cyclictest	3515640	-21	fschecks_time	09:40:19	0
3456937	99	43	34,6	cyclictest	0	-21	swapper/0	08:35:31	0
3456937	99	43	34,5	cyclictest	3549066	-21	kworker/u4:1-nfsiod	11:15:28	0
3456937	99	43	23,17	cyclictest	3473509	-21	kworker/u4:15+rpciod	09:00:39	0
3456937	99	43	11,17	cyclictest	15	1	ktimers/0	09:10:13	0
3456937	99	43	11,17	cyclictest	15	1	ktimers/0	09:10:12	0
3456938	99	42	7,21	cyclictest	3538682	-21	ssh	10:05:35	1
3456938	99	42	33,7	cyclictest	3515487	-21	df_abs	09:40:17	1
3456937	99	42	35,5	cyclictest	3483120	-21	fschecks_time	08:50:19	0
3456937	99	42	35,5	cyclictest	3481799	-21	fschecks_count	08:45:19	0
3456937	99	42	34,6	cyclictest	3471183	-21	aten2__	08:05:15	0
3456937	99	42	34,5	cyclictest	3456936	-21	cyclictest	11:05:24	0
3456938	99	41	35,4	cyclictest	3666407	-21	gltestperf	12:30:22	1
3456938	99	41	34,5	cyclictest	0	-21	swapper/1	12:20:30	1
3456938	99	41	34,4	cyclictest	0	-21	swapper/1	07:35:36	1
3456938	99	41	33,5	cyclictest	3480602	-21	fschecks_time	08:40:19	1
3456937	99	41	34,5	cyclictest	3470213	-21	fschecks_time	08:00:18	0
3456938	99	40	33,5	cyclictest	3480131	-21	sendmail	08:39:59	1
3456937	99	40	33,5	cyclictest	3462565	-21	gltestperf	07:30:21	0
3456937	99	40	32,5	cyclictest	3478115	-21	gltestperf	08:30:19	0
3456938	99	39	33,4	cyclictest	3461681	-21	sendmail_mailqu	07:25:36	1
3456938	99	39	26,11	cyclictest	3469662	-21	kworker/u4:9+rpciod	08:01:45	1
3456937	99	39	32,5	cyclictest	3465265	-21	kernelversion	07:40:23	0
3456937	99	39	29,6	cyclictest	0	-21	swapper/0	07:15:38	0
3456937	99	38	28,7	cyclictest	0	-21	swapper/0	08:25:27	0
3456937	99	32	23,7	cyclictest	0	-21	swapper/0	07:10:02	0
3456938	99	30	23,5	cyclictest	3442782	-21	kworker/u4:5+events_unbound	07:10:01	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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