OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #7, slot #2

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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 376 highest latencies:

System rack7slot2.osadl.org (updated Mon May 04, 2026 12:44:09)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3372933	99	91	48,38	cyclictest	0	-21	swapper/1	11:50:35	1
3372933	99	83	4,32	cyclictest	3453628	-21	ssh	10:05:38	1
3372933	99	82	71,9	cyclictest	3371657	-21	kworker/u4:4+events_unbound	08:45:30	1
3372933	99	78	48,28	cyclictest	3462973	-21	sshd	10:15:46	1
3372933	99	75	35,36	cyclictest	0	-21	swapper/1	10:40:31	1
3372933	99	75	35,36	cyclictest	0	-21	swapper/1	10:40:30	1
3372933	99	74	39,32	cyclictest	3439873	-21	tune2fs	09:50:20	1
3372933	99	73	7,24	cyclictest	0	-21	swapper/1	12:10:23	1
3372933	99	72	63,7	cyclictest	3472621	-21	kworker/u4:2+events_unbound	10:35:50	1
3372933	99	70	62,6	cyclictest	3371659	-21	kworker/u4:6+events_unbound	08:15:23	1
3372933	99	70	37,31	cyclictest	3500728	-21	idleruntime-cro	11:00:00	1
3372933	99	70	28,37	cyclictest	0	-21	swapper/1	09:10:28	1
3372933	99	69	9,14	cyclictest	0	-21	swapper/1	07:55:25	1
3372933	99	69	8,21	cyclictest	3403677	-21	diskmemload	10:45:28	1
3372933	99	68	33,32	cyclictest	3498696	-21	kworker/u4:5-rpciod	11:45:41	1
3372933	99	68	33,32	cyclictest	3498696	-21	kworker/u4:5-rpciod	11:45:41	1
3372933	99	67	42,6	cyclictest	3450958	-21	kworker/u4:10+events_unbound	10:10:48	1
3372933	99	67	34,30	cyclictest	0	-21	swapper/1	09:40:37	1
3372933	99	66	58,6	cyclictest	3384384	-21	kworker/u4:7+events_unbound	08:25:24	1
3372933	99	66	57,7	cyclictest	3533599	-21	kworker/u4:8+events_unbound	11:41:00	1
3372933	99	66	57,6	cyclictest	3398533	-21	kworker/u4:1+events_unbound	08:55:32	1
3372933	99	66	29,33	cyclictest	0	-21	swapper/1	09:35:19	1
3372933	99	66	28,4	cyclictest	3496373	-21	latency_hist	10:55:01	1
3372933	99	66	27,5	cyclictest	0	-21	swapper/1	10:30:34	1
3372932	99	66	60,4	cyclictest	256	50	irq/23-42890000.ethernet	10:40:12	0
3372932	99	66	60,4	cyclictest	256	50	irq/23-42890000.ethernet	10:40:12	0
3372932	99	66	42,8	cyclictest	1062	-21	lldpd	07:20:44	0
3372933	99	65	33,4	cyclictest	3554520	-21	switchtime	12:00:37	1
3372933	99	65	32,30	cyclictest	3449050	-21	kernelversion	10:00:27	1
3372933	99	65	27,10	cyclictest	3583974	-21	basename	12:35:16	1
3372932	99	65	58,5	cyclictest	3572872	-21	kworker/u4:13+events_unbound	12:31:08	0
3372933	99	64	34,5	cyclictest	3470460	-21	aten_r7power_en	10:25:17	1
3372933	99	64	32,4	cyclictest	3546920	-21	kworker/u4:0-rpciod	12:25:38	1
3372933	99	64	31,31	cyclictest	0	-21	swapper/1	07:50:38	1
3372933	99	64	30,32	cyclictest	3559106	-21	unixbench_singl	12:05:40	1
3372933	99	64	27,5	cyclictest	0	-21	swapper/1	11:00:35	1
3372933	99	64	27,32	cyclictest	0	-21	swapper/1	11:15:39	1
3372933	99	64	25,9	cyclictest	0	-21	swapper/1	07:30:38	1
3372932	99	64	30,18	cyclictest	0	-21	swapper/0	10:30:33	0
3372933	99	63	32,27	cyclictest	0	-21	swapper/1	09:55:23	1
3372933	99	63	30,6	cyclictest	0	-21	swapper/1	11:30:34	1
3372933	99	63	29,31	cyclictest	3394845	-21	latency_hist	08:35:01	1
3372933	99	63	27,6	cyclictest	0	-21	swapper/1	11:05:41	1
3372933	99	63	26,7	cyclictest	0	-21	swapper/1	07:25:35	1
3372932	99	63	50,11	cyclictest	15	1	ktimers/0	08:25:27	0
3372933	99	62	55,5	cyclictest	3372929	-21	cyclictest	12:23:18	1
3372933	99	62	28,5	cyclictest	3421902	-21	/usr/sbin/munin	09:30:15	1
3372933	99	62	27,6	cyclictest	3518914	-21	fschecks_time	11:20:19	1
3372933	99	62	23,7	cyclictest	0	-21	swapper/1	08:45:02	1
3372933	99	61	29,4	cyclictest	0	-21	swapper/1	09:15:35	1
3372933	99	61	27,7	cyclictest	0	-21	swapper/1	08:00:24	1
3372933	99	61	26,6	cyclictest	0	-21	swapper/1	09:20:35	1
3372932	99	61	51,8	cyclictest	3480245	-21	timerandwakeup	10:35:39	0
3372933	99	60	30,28	cyclictest	0	-21	swapper/1	12:30:24	1
3372933	99	60	27,6	cyclictest	0	-21	swapper/1	11:10:23	1
3372933	99	60	27,6	cyclictest	0	-21	swapper/1	09:45:41	1
3372933	99	59	27,28	cyclictest	0	-21	swapper/1	08:20:37	1
3372933	99	59	25,6	cyclictest	0	-21	swapper/1	11:25:35	1
3372932	99	59	51,6	cyclictest	3431375	-21	ld	09:40:26	0
3372933	99	58	44,11	cyclictest	3549425	-21	ssh	11:55:19	1
3372933	99	58	24,7	cyclictest	3570710	-21	latency_hist	12:20:02	1
3372933	99	58	24,6	cyclictest	3388170	-21	unixbench-2d	08:05:38	1
3372933	99	57	4,17	cyclictest	3418134	-21	ntp_states	09:25:32	1
3372933	99	56	23,7	cyclictest	0	-21	swapper/1	09:05:36	1
3372933	99	54	45,7	cyclictest	0	-21	swapper/1	10:20:32	1
3372932	99	54	20,20	cyclictest	0	-21	swapper/0	09:10:02	0
3372932	99	53	48,3	cyclictest	3569055	-21	kworker/u4:9+events_unbound	12:21:05	0
3372932	99	53	46,4	cyclictest	0	-21	swapper/0	10:05:35	0
3372932	99	53	44,6	cyclictest	3509815	-21	aten2__	11:10:15	0
3372932	99	53	37,9	cyclictest	3558155	-21	fschecks_count	12:05:18	0
3372932	99	53	37,12	cyclictest	0	-21	swapper/0	11:55:32	0
3372932	99	53	32,18	cyclictest	0	-21	swapper/0	11:30:15	0
3372932	99	53	29,21	cyclictest	0	-21	swapper/0	11:05:22	0
3372932	99	52	45,5	cyclictest	3414235	-21	users	09:20:40	0
3372932	99	52	44,6	cyclictest	3551349	-21	kworker/u4:11-rpciod	12:10:19	0
3372932	99	52	33,17	cyclictest	3418591	-21	unixbench_multi	09:25:39	0
3372932	99	52	23,8	cyclictest	0	-21	swapper/0	10:45:18	0
3372932	99	52	1,27	cyclictest	3469022	-21	ssh	10:23:23	0
3372932	99	51	39,6	cyclictest	3462342	-21	ntpq	10:15:29	0
3372932	99	51	29,19	cyclictest	3387475	-21	fschecks_count	08:05:19	0
3372932	99	51	29,14	cyclictest	256	50	irq/23-42890000.ethernet	10:00:11	0
3372932	99	50	45,3	cyclictest	3551343	-21	kworker/u4:1+events_unbound	12:01:04	0
3372932	99	50	44,4	cyclictest	3474519	-21	latency_hist	10:30:01	0
3372932	99	50	43,5	cyclictest	3536347	-21	fschecks_time	11:40:20	0
3372933	99	49	34,11	cyclictest	0	-21	swapper/1	09:00:25	1
3372932	99	49	41,5	cyclictest	3381155	-21	grep	07:40:22	0
3372932	99	49	39,8	cyclictest	3398050	-21	sshd	08:45:29	0
3372932	99	49	32,15	cyclictest	3579305	-21	sh	12:30:00	0
3372932	99	49	17,19	cyclictest	3523670	-21	ntpq	11:25:29	0
3372932	99	48	39,6	cyclictest	3497084	-21	/usr/sbin/munin	10:55:20	0
3372932	99	48	38,7	cyclictest	3531923	-21	sort	11:35:20	0
3372932	99	48	26,18	cyclictest	0	-21	swapper/0	12:15:34	0
3372932	99	48	1,24	cyclictest	0	-21	swapper/0	10:10:25	0
3372933	99	47	39,6	cyclictest	3395631	-21	sendmail_mailqu	08:35:35	1
3372933	99	47	39,6	cyclictest	3375497	-21	tr	07:20:00	1
3372933	99	47	38,6	cyclictest	3372929	-21	cyclictest	07:40:09	1
3372933	99	47	35,9	cyclictest	3375857	-21	sed	07:20:17	1
3372932	99	47	41,4	cyclictest	3384090	-21	cat	07:50:35	0
3372932	99	47	40,5	cyclictest	3545143	-21	tune2fs	11:50:21	0
3372932	99	47	40,5	cyclictest	3502027	-21	sh	11:00:38	0
3372932	99	47	40,5	cyclictest	3427177	-21	sendmail_mailqu	09:35:38	0
3372932	99	47	28,4	cyclictest	0	-21	swapper/0	08:35:00	0
3372932	99	47	20,8	cyclictest	3492967	-21	collect2	10:50:27	0
3372932	99	46	39,5	cyclictest	3544012	-21	sshd	11:49:22	0
3372932	99	46	39,5	cyclictest	3544012	-21	sshd	11:49:21	0
3372932	99	46	36,6	cyclictest	3396002	-21	ls	08:40:00	0
3372932	99	46	26,17	cyclictest	0	-21	swapper/0	08:10:19	0
3372932	99	46	10,10	cyclictest	3439528	-21	apt-get	09:50:16	0
3372933	99	45	38,5	cyclictest	3535711	-21	idleruntime-cro	11:40:00	1
3372932	99	45	6,19	cyclictest	524	-21	in:imuxsock	07:59:59	0
3372932	99	45	4,32	cyclictest	3409182	-21	ssh	09:15:30	0
3372932	99	45	38,5	cyclictest	3444071	-21	aten_r7power_po	09:55:16	0
3372932	99	45	38,5	cyclictest	3435861	-21	sh	09:45:28	0
3372932	99	45	36,7	cyclictest	3375502	-21	lockfile-create	07:20:01	0
3372932	99	45	35,8	cyclictest	3390124	-21	gltestperf	08:15:21	0
3372932	99	45	34,8	cyclictest	0	-21	swapper/0	11:15:25	0
3372932	99	45	28,15	cyclictest	0	-21	swapper/0	11:20:12	0
3372933	99	44	36,6	cyclictest	3371659	-21	kworker/u4:6+events_unbound	07:35:09	1
3372933	99	44	35,6	cyclictest	3373398	-21	fschecks_time	07:10:21	1
3372932	99	44	7,33	cyclictest	3404755	-21	ntpq	09:10:30	0
3372932	99	44	37,5	cyclictest	3583852	-21	basename	12:35:11	0
3372932	99	44	37,5	cyclictest	1062	-21	lldpd	08:57:18	0
3372932	99	44	36,6	cyclictest	3383126	-21	kworker/u4:9	07:50:01	0
3372932	99	44	33,8	cyclictest	3396931	-21	sendmail_mailqu	08:40:37	0
3372933	99	43	33,7	cyclictest	0	-21	swapper/1	08:50:32	1
3372933	99	43	32,9	cyclictest	3389603	-21	apt	08:15:00	1
3372932	99	43	37,4	cyclictest	3394692	-21	kworker/u4:9-rpciod	09:30:41	0
3372932	99	43	34,7	cyclictest	3373145	-21	aten_r7power_en	07:10:18	0
3372932	99	43	27,12	cyclictest	0	-21	swapper/0	08:55:02	0
3372933	99	41	29,9	cyclictest	0	-21	swapper/1	07:45:21	1
3372932	99	41	33,6	cyclictest	3391166	-21	aten_r7power_po	08:20:16	0
3372932	99	41	32,6	cyclictest	3329834	-21	kworker/u4:12+events_unbound	07:35:01	0
3372932	99	39	32,5	cyclictest	3372929	-21	cyclictest	09:00:22	0
3372932	99	39	32,4	cyclictest	3378006	-21	kworker/u4:2-rpciod	07:30:01	0
3372932	99	38	1,9	cyclictest	3385958	-21	apt-get	08:00:17	0
3372932	99	38	1,20	cyclictest	0	-21	swapper/0	07:35:30	0
3372932	99	32	23,7	cyclictest	248	50	irq/20-imx-lcdifv3-crtc.0	07:10:01	0
3372933	99	29	19,7	cyclictest	0	-21	swapper/1	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