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 all highest latencies:

System rack7slot2.osadl.org (updated Wed Jan 21, 2026 00:44:14)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3149156	99	117	101,7	cyclictest	3349661	-21	kworker/u4:10+events_unbound	00:28:00	0
3149156	99	107	100,5	cyclictest	3255888	-21	kworker/u4:5+events_unbound	22:52:39	0
3149156	99	104	96,6	cyclictest	3199593	-21	kworker/u4:6+events_unbound	21:32:23	0
3149156	99	100	79,8	cyclictest	3260274	-21	kworker/u4:17+events_unbound	22:42:37	0
3149156	99	100	79,8	cyclictest	3260274	-21	kworker/u4:17+events_unbound	22:42:37	0
3149156	99	96	89,5	cyclictest	3358303	-21	kworker/u4:0+events_unbound	00:38:03	0
3149157	99	94	71,8	cyclictest	3328626	-21	kworker/u4:9+events_unbound	00:23:00	1
3149156	99	94	86,6	cyclictest	3349657	-21	kworker/u4:4+events_unbound	00:33:02	0
3149156	99	92	76,5	cyclictest	3208406	-21	kworker/u4:1+events_unbound	21:42:27	0
3149156	99	89	81,6	cyclictest	3298888	-21	kworker/u4:12+events_unbound	23:47:51	0
3149156	99	80	71,7	cyclictest	3324283	-21	kworker/u4:4+events_unbound	00:02:55	0
3149156	99	80	71,7	cyclictest	3324283	-21	kworker/u4:4+events_unbound	00:02:54	0
3149156	99	76	69,5	cyclictest	3160547	-21	kworker/u4:7+events_unbound	20:45:00	0
3149157	99	74	66,6	cyclictest	3225295	-21	kworker/u4:16+events_unbound	22:07:32	1
3149157	99	74	33,37	cyclictest	0	-21	swapper/1	21:40:40	1
3149156	99	74	65,6	cyclictest	3290163	-21	kworker/u4:4+events_unbound	23:17:46	0
3149157	99	70	39,28	cyclictest	3297289	-21	ps	23:25:33	1
3149157	99	70	39,28	cyclictest	3297289	-21	ps	23:25:33	1
3149156	99	70	63,5	cyclictest	3139379	-21	kworker/u4:11+events_unbound	19:35:01	0
3149157	99	67	33,32	cyclictest	3357218	-21	timerandwakeup	00:35:37	1
3149157	99	67	30,5	cyclictest	3331564	-21	mailstats	00:05:38	1
3149157	99	67	30,5	cyclictest	3331564	-21	mailstats	00:05:38	1
3149157	99	67	30,33	cyclictest	37	-21	kcompactd0	22:50:33	1
3149156	99	67	60,5	cyclictest	3285821	-21	kworker/u4:9+events_unbound	23:32:48	0
3149157	99	66	33,30	cyclictest	0	-21	swapper/1	23:10:26	1
3149157	99	66	33,29	cyclictest	0	-21	swapper/1	19:30:18	1
3149157	99	66	32,30	cyclictest	0	-21	swapper/1	23:15:28	1
3149157	99	66	31,32	cyclictest	3205971	-21	latency_hist	21:40:02	1
3149157	99	66	31,32	cyclictest	0	-21	swapper/1	21:25:30	1
3149157	99	66	31,32	cyclictest	0	-21	swapper/1	21:25:29	1
3149157	99	66	30,32	cyclictest	0	-21	swapper/1	21:15:26	1
3149157	99	66	22,11	cyclictest	471	-21	weston	22:58:59	1
3149157	99	65	4,12	cyclictest	3352548	-21	ssh	00:30:24	1
3149157	99	65	33,29	cyclictest	3309498	-21	df_abs	23:40:17	1
3149157	99	65	32,31	cyclictest	3343077	-21	ssh	00:20:00	1
3149157	99	65	32,31	cyclictest	3198034	-21	/usr/sbin/munin	21:30:26	1
3149157	99	65	27,5	cyclictest	3335418	-21	kernelversion	00:10:24	1
3149157	99	65	27,5	cyclictest	0	-21	swapper/1	23:35:35	1
3149157	99	65	19,8	cyclictest	3244723	-21	sort	22:25:02	1
3149156	99	65	60,4	cyclictest	3277113	-21	kworker/u4:8+events_unbound	23:02:40	0
3149157	99	64	34,28	cyclictest	3174754	-21	aten_r7power_po	20:50:14	1
3149157	99	64	32,29	cyclictest	0	-21	swapper/1	19:10:21	1
3149157	99	64	31,30	cyclictest	3223739	-21	fschecks_time	22:00:20	1
3149157	99	64	31,29	cyclictest	0	-21	swapper/1	23:30:15	1
3149157	99	64	29,32	cyclictest	0	-21	swapper/1	22:40:27	1
3149157	99	64	29,32	cyclictest	0	-21	swapper/1	22:40:26	1
3149157	99	64	29,31	cyclictest	0	-21	swapper/1	00:25:31	1
3149157	99	64	26,6	cyclictest	0	-21	swapper/1	23:05:18	1
3149157	99	64	26,5	cyclictest	3210818	-21	fschecks_time	21:45:19	1
3149157	99	63	56,5	cyclictest	3176968	-21	kworker/u4:8+events_unbound	21:14:59	1
3149157	99	63	29,32	cyclictest	3313464	-21	chmod	23:45:07	1
3149157	99	63	28,5	cyclictest	3232931	-21	proc_pri	22:10:35	1
3149157	99	63	28,32	cyclictest	0	-21	swapper/1	21:50:33	1
3149157	99	63	24,5	cyclictest	0	-21	swapper/1	21:25:01	1
3149157	99	62	29,4	cyclictest	3326654	-21	fschecks_count	00:00:23	1
3149157	99	62	29,4	cyclictest	3326654	-21	fschecks_count	00:00:22	1
3149157	99	62	29,30	cyclictest	0	-21	swapper/1	23:50:19	1
3149157	99	62	29,29	cyclictest	0	-21	swapper/1	22:25:30	1
3149157	99	62	26,5	cyclictest	0	-21	swapper/1	22:35:17	1
3149156	99	62	5,49	cyclictest	3180589	-21	sshd	21:10:29	0
3149157	99	61	28,5	cyclictest	3223074	-21	sendmail	21:59:59	1
3149157	99	61	23,6	cyclictest	0	-21	swapper/1	22:45:39	1
3149157	99	61	23,35	cyclictest	0	-21	swapper/1	19:15:35	1
3149157	99	61	23,35	cyclictest	0	-21	swapper/1	19:15:34	1
3149156	99	61	53,6	cyclictest	3332326	-21	kworker/u4:11+events_unbound	00:18:01	0
3149156	99	61	45,10	cyclictest	3285820	-21	kworker/u4:8-rpciod	23:30:02	0
3149156	99	61	45,10	cyclictest	3285820	-21	kworker/u4:8-rpciod	23:30:01	0
3149157	99	60	28,6	cyclictest	0	-21	swapper/1	22:15:38	1
3149157	99	60	28,29	cyclictest	0	-21	swapper/1	19:20:16	1
3149157	99	60	27,5	cyclictest	0	-21	swapper/1	19:25:21	1
3149157	99	60	27,4	cyclictest	0	-21	swapper/1	20:10:18	1
3149157	99	60	26,6	cyclictest	0	-21	swapper/1	20:25:01	1
3149157	99	60	24,6	cyclictest	0	-21	swapper/1	23:20:10	1
3149156	99	60	55,4	cyclictest	3199592	-21	kworker/u4:5+events_unbound	22:15:02	0
3149156	99	60	53,5	cyclictest	3161815	-21	kworker/u4:16+events_unbound	20:32:15	0
3149157	99	59	27,4	cyclictest	0	-21	swapper/1	20:25:23	1
3149157	99	58	52,4	cyclictest	0	-21	swapper/1	19:45:35	1
3149157	99	58	27,4	cyclictest	0	-21	swapper/1	22:30:18	1
3149157	99	58	27,4	cyclictest	0	-21	swapper/1	22:30:18	1
3149157	99	58	23,6	cyclictest	0	-21	swapper/1	23:55:42	1
3149156	99	58	50,6	cyclictest	3281479	-21	kworker/u4:2+events_unbound	23:35:33	0
3149156	99	58	34,21	cyclictest	3257480	-21	ssh	22:40:00	0
3149156	99	57	50,5	cyclictest	3168156	-21	kworker/u4:6+events_unbound	21:21:44	0
3149156	99	57	49,6	cyclictest	3234095	-21	kworker/u4:11+events_unbound	22:17:34	0
3149156	99	57	43,10	cyclictest	3296192	-21	sh	23:25:01	0
3149156	99	57	33,21	cyclictest	3231711	-21	ssh	22:10:00	0
3149156	99	56	51,4	cyclictest	3174445	-21	kworker/u4:2+events_unbound	20:52:18	0
3149156	99	56	49,6	cyclictest	3199593	-21	kworker/u4:6+events_unbound	21:50:02	0
3149156	99	56	48,6	cyclictest	3139379	-21	kworker/u4:11+events_unbound	19:21:59	0
3149156	99	56	46,8	cyclictest	3281479	-21	kworker/u4:2+events_unbound	23:12:43	0
3149156	99	55	46,7	cyclictest	3176968	-21	kworker/u4:8+events_unbound	21:29:59	0
3149156	99	55	46,7	cyclictest	3176968	-21	kworker/u4:8+events_unbound	21:29:59	0
3149156	99	54	47,5	cyclictest	3247188	-21	kworker/u4:8+events_unbound	22:48:00	0
3149156	99	54	47,5	cyclictest	3181711	-21	kworker/u4:10+events_unbound	21:19:01	0
3149156	99	54	46,6	cyclictest	3277112	-21	kworker/u4:6+events_unbound	23:10:00	0
3149156	99	54	46,6	cyclictest	3229706	-21	kworker/u4:4+events_unbound	22:22:31	0
3149156	99	54	46,6	cyclictest	3212773	-21	kworker/u4:0+events_unbound	22:00:21	0
3149156	99	53	47,4	cyclictest	3202659	-21	/usr/sbin/munin	21:35:34	0
3149157	99	52	44,5	cyclictest	3166875	-21	kworker/u4:4+events_unbound	21:00:00	1
3149156	99	52	43,5	cyclictest	0	-21	swapper/0	21:57:50	0
3149156	99	51	44,5	cyclictest	3242854	-21	kworker/u4:3+events_unbound	22:25:04	0
3149156	99	50	43,5	cyclictest	3164868	-21	fschecks_time	20:10:19	0
3149156	99	50	43,5	cyclictest	3154256	-21	kworker/u4:9+events_unbound	19:37:02	0
3149157	99	49	40,6	cyclictest	3164345	-21	kworker/u4:8+events_unbound	20:17:11	1
3149157	99	49	39,7	cyclictest	3151615	-21	kworker/u4:8+events_unbound	19:42:02	1
3149156	99	49	41,6	cyclictest	3247185	-21	kworker/u4:0+events_unbound	22:34:24	0
3149156	99	49	41,6	cyclictest	3247185	-21	kworker/u4:0+events_unbound	22:34:23	0
3149156	99	49	38,7	cyclictest	3150385	-21	modprobe	19:15:01	0
3149156	99	48	41,5	cyclictest	3334925	-21	aten_r7power_cu	00:10:16	0
3149156	99	48	39,6	cyclictest	3319982	-21	kworker/u4:6+events_unbound	23:59:43	0
3149157	99	47	38,7	cyclictest	3171912	-21	systemd	20:37:14	1
3149157	99	47	38,7	cyclictest	3171912	-21	systemd	20:37:14	1
3149156	99	47	9,11	cyclictest	3145483	-21	kworker/u4:5+events_unbound	19:25:12	0
3149156	99	47	40,5	cyclictest	3313254	-21	diskmemload	23:45:01	0
3149156	99	47	39,5	cyclictest	3177799	-21	sshd	21:00:30	0
3149156	99	47	36,8	cyclictest	3162087	-21	aten_r7power_cu	20:00:15	0
3149156	99	47	2,37	cyclictest	3330564	-21	apt-get	00:05:13	0
3149156	99	47	2,37	cyclictest	3330564	-21	apt-get	00:05:12	0
3149157	99	46	39,5	cyclictest	3275786	-21	ld	23:00:31	1
3149156	99	46	39,5	cyclictest	3166874	-21	kworker/u4:3+events_unbound	20:57:19	0
3149156	99	46	37,7	cyclictest	3321916	-21	latency_hist	23:55:02	0
3149156	99	46	36,8	cyclictest	3344106	-21	ntp_kernel_pll_	00:20:30	0
3149156	99	46	36,8	cyclictest	3168365	-21	aten2__	20:25:14	0
3149156	99	44	36,6	cyclictest	3158372	-21	aten_r7power_vo	19:45:17	0
3149156	99	44	36,5	cyclictest	3274829	-21	latency_hist	23:00:02	0
3149156	99	44	33,7	cyclictest	255	50	irq/23-42890000.ethernet	21:45:23	0
3149156	99	44	27,15	cyclictest	3157013	-21	aten2__	19:40:15	0
3149157	99	43	37,4	cyclictest	0	-21	swapper/1	21:05:31	1
3149157	99	43	32,7	cyclictest	0	-21	swapper/1	20:00:19	1
3149157	99	42	37,3	cyclictest	3145483	-21	kworker/u4:5+events_unbound	19:57:04	1
3149157	99	42	34,5	cyclictest	3171920	-21	kworker/u4:14-rpciod	20:45:00	1
3149157	99	42	33,7	cyclictest	3164030	-21	mailstats	20:05:34	1
3149157	99	42	31,8	cyclictest	0	-21	swapper/1	19:35:17	1
3149156	99	42	36,4	cyclictest	3171844	-21	unixbench_multi	20:35:36	0
3149156	99	42	36,4	cyclictest	3171844	-21	unixbench_multi	20:35:35	0
3149156	99	42	34,6	cyclictest	3161803	-21	kworker/u4:13+events_unbound	20:23:43	0
3149156	99	42	34,5	cyclictest	3160803	-21	aten_r7power_cu	19:55:16	0
3149157	99	41	30,9	cyclictest	0	-21	swapper/1	19:50:16	1
3149157	99	41	30,8	cyclictest	0	-21	swapper/1	20:30:18	1
3149156	99	41	31,8	cyclictest	3179180	-21	mailstats	21:05:34	0
3149156	99	41	31,7	cyclictest	0	-21	swapper/0	19:50:17	0
3149157	99	40	32,6	cyclictest	3178349	-21	latency_hist	21:05:07	1
3149156	99	40	31,7	cyclictest	3164243	-21	unixbench_multi	20:05:34	0
3149156	99	40	31,7	cyclictest	3151754	-21	latency_hist	19:20:02	0
3149156	99	40	31,7	cyclictest	3151754	-21	latency_hist	19:20:01	0
3149157	99	39	32,5	cyclictest	0	-21	swapper/1	20:45:19	1
3149156	99	39	25,12	cyclictest	0	-21	swapper/0	19:10:01	0
3149156	99	37	29,6	cyclictest	3173424	-21	aten_r7power_cu	20:45:14	0
3149156	99	36	27,7	cyclictest	0	-21	swapper/0	20:15:51	0
3149157	99	30	23,5	cyclictest	3149207	-21	latency_hist	19:10:02	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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