OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #b, slot #1

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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance

Characteristics of the 100 highest latencies:

System rackbslot1.osadl.org (updated Tue Apr 01, 2025 12:44:41)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3469488	2	207	183,14	sleep3	0	-21	swapper/3	07:09:45	3
3469301	2	203	179,14	sleep1	0	-21	swapper/1	07:07:19	1
3469297	2	197	170,18	sleep2	0	-21	swapper/2	07:07:16	2
3469395	2	176	153,14	sleep0	0	-21	swapper/0	07:08:30	0
3469702	99	67	64,2	cyclictest	3605102	-21	kworker/u8:3+flush-179:0	09:45:01	0
3469702	99	62	59,2	cyclictest	3698861	-21	kworker/u8:0+events_unbound	11:15:19	0
3469702	99	62	58,3	cyclictest	3698861	-21	kworker/u8:0+flush-179:0	11:30:01	0
3469702	99	62	58,3	cyclictest	3657612	-21	kworker/u8:1+flush-179:0	11:00:04	0
3469702	99	60	56,3	cyclictest	3606029	-21	ThreadPoolForeg	07:45:02	0
3469702	99	59	56,2	cyclictest	3662676	-21	kworker/u8:3+flush-179:0	10:55:21	0
3469702	99	58	52,4	cyclictest	3480571	-21	/usr/share/muni	07:20:05	0
3469702	99	56	52,2	cyclictest	3515204	-21	kworker/u8:3+events_unbound	08:55:08	0
3469702	99	56	51,4	cyclictest	3560024	-21	/usr/share/muni	08:40:16	0
3469702	99	56	51,4	cyclictest	3560024	-21	/usr/share/muni	08:40:16	0
3469702	99	54	51,2	cyclictest	3485637	-21	kworker/u8:2+events_unbound	07:30:36	0
3469702	99	54	50,3	cyclictest	3492748	-21	kworker/u8:1+flush-179:0	08:05:35	0
3469711	99	53	49,3	cyclictest	3619635	-21	kworker/u8:2+events_unbound	09:55:12	3
3469708	99	53	49,3	cyclictest	3605429	-21	/usr/share/muni	09:30:08	2
3469702	99	53	45,6	cyclictest	3650465	-21	/usr/share/muni	10:20:11	0
3469711	99	52	40,11	cyclictest	3480999	-21	apt-get	07:20:09	3
3469702	99	52	47,3	cyclictest	3569567	-21	kworker/u8:0+flush-179:0	09:15:35	0
3469706	99	51	44,5	cyclictest	3628061	-21	/usr/share/muni	09:55:03	1
3469702	99	51	43,3	cyclictest	3614648	-21	kworker/u8:0+flush-179:0	10:00:16	0
3469708	99	50	44,4	cyclictest	3623187	-21	/usr/share/muni	09:50:18	2
3469706	99	50	45,4	cyclictest	3469342	-21	kworker/u8:0+flush-179:0	07:15:34	1
3469706	99	50	45,3	cyclictest	3676166	-21	base64	10:50:00	1
3469702	99	50	47,2	cyclictest	3515204	-21	kworker/u8:3+events_unbound	09:10:07	0
3469702	99	50	44,4	cyclictest	3614648	-21	kworker/u8:0+flush-179:0	10:30:20	0
3469711	99	49	45,3	cyclictest	3704102	-21	munin-update	11:20:34	3
3469708	99	49	47,1	cyclictest	3469343	-21	kworker/2:1+pm	07:32:58	2
3469706	99	49	40,6	cyclictest	3597756	-21	/usr/share/muni	09:20:14	1
3469706	99	49	40,6	cyclictest	3597756	-21	/usr/share/muni	09:20:13	1
3469702	99	49	45,3	cyclictest	3619635	-21	kworker/u8:2+flush-179:0	09:50:19	0
3469702	99	49	1,47	cyclictest	3606021	-13	VizCompositorTh	11:55:12	0
3469708	99	48	45,2	cyclictest	3518851	-21	kworker/u8:4+flush-179:0	07:55:31	2
3469708	99	48	44,3	cyclictest	3662676	-21	kworker/u8:3+flush-179:0	10:55:24	2
3469708	99	48	35,12	cyclictest	3703362	-21	kworker/2:2+pm	11:55:10	2
3469706	99	48	44,3	cyclictest	3596438	-21	kworker/u8:1+flush-179:0	09:15:43	1
3469706	99	48	42,4	cyclictest	3672972	-21	latency_hist	10:45:01	1
3469702	99	48	44,2	cyclictest	3657612	-21	kworker/u8:1+flush-179:0	10:50:37	0
3469708	99	47	44,2	cyclictest	3698861	-21	kworker/u8:0+events_unbound	11:31:58	2
3469708	99	47	43,3	cyclictest	3675589	-21	kworker/u8:2+events_unbound	11:22:34	2
3469708	99	47	40,6	cyclictest	3451131	-21	ThreadPoolForeg	12:38:28	2
3469708	99	47	33,13	cyclictest	3703362	-21	kworker/2:2+pm	12:04:38	2
3469708	99	47	31,14	cyclictest	3534939	-21	kworker/2:0+pm	08:35:04	2
3469706	99	47	41,3	cyclictest	3727236	-21	chrome	11:45:01	1
3469702	99	47	44,2	cyclictest	3645134	-21	kworker/u8:2+flush-179:0	10:15:29	0
3469702	99	47	43,3	cyclictest	3544662	-21	kworker/u8:0+flush-179:0	08:35:30	0
3469702	99	47	42,4	cyclictest	3675589	-21	kworker/u8:2+flush-179:0	11:35:30	0
3469702	99	47	42,4	cyclictest	3451073	-20	chrome	10:05:24	0
3469708	99	46	43,2	cyclictest	3559283	-21	kworker/u8:1+events_unbound	09:06:57	2
3469708	99	46	43,2	cyclictest	3534939	-21	kworker/2:0+pm	09:47:58	2
3469702	99	46	43,2	cyclictest	3765023	-21	kworker/u8:1+events_unbound	12:35:23	0
3469702	99	46	42,3	cyclictest	3515204	-21	kworker/u8:3+flush-179:0	08:20:01	0
3469702	99	46	39,5	cyclictest	3505576	-21	/usr/share/muni	07:45:06	0
3469708	99	45	13,31	cyclictest	3606033	-13	Compositor	07:10:36	2
3469706	99	45	41,3	cyclictest	3520408	-21	latency_hist	08:00:02	1
3469702	99	45	42,2	cyclictest	3691949	-21	kworker/u8:5+flush-179:0	11:30:06	0
3469702	99	45	41,3	cyclictest	3515204	-21	kworker/u8:3+events_unbound	08:00:26	0
3469702	99	45	40,3	cyclictest	3569567	-21	kworker/u8:0+flush-179:0	09:05:18	0
3469702	99	45	38,5	cyclictest	3757483	-21	/usr/share/muni	12:20:04	0
3469711	99	44	1,41	cyclictest	3727268	-21	/usr/share/muni	11:45:01	3
3469708	99	44	38,4	cyclictest	3530401	-21	/usr/share/muni	08:10:16	2
3469708	99	44	1,41	cyclictest	3479669	-31	munin-html	07:15:43	2
3469706	99	44	39,4	cyclictest	3559283	-21	kworker/u8:1+flush-179:0	08:45:20	1
3469702	99	44	41,2	cyclictest	3734649	-21	kworker/u8:3+flush-179:0	12:30:16	0
3469702	99	44	41,2	cyclictest	3721812	-21	kworker/u8:1+events_unbound	11:50:08	0
3469702	99	44	41,2	cyclictest	3721812	-21	kworker/u8:1+events_unbound	11:50:07	0
3469702	99	44	41,2	cyclictest	3675589	-21	kworker/u8:2+events_unbound	11:10:00	0
3469711	99	43	38,3	cyclictest	3492748	-21	kworker/u8:1+events_unbound	08:05:05	3
3469708	99	43	29,13	cyclictest	3703362	-21	kworker/2:2+pm	12:06:43	2
3469708	99	43	29,13	cyclictest	3534939	-21	kworker/2:0+pm	09:42:54	2
3469708	99	43	28,3	cyclictest	3614648	-21	kworker/u8:0+events_unbound	10:33:43	2
3469708	99	43	2,17	cyclictest	3451163	-21	chrome	10:50:56	2
3469706	99	43	38,4	cyclictest	3615289	-21	/usr/share/muni	09:40:06	1
3469706	99	43	37,4	cyclictest	3570357	-21	/usr/share/muni	08:50:15	1
3469702	99	43	40,2	cyclictest	3691949	-21	kworker/u8:5+events_unbound	11:20:09	0
3469702	99	43	39,3	cyclictest	3734662	-21	kworker/u8:4+events_unbound	12:15:28	0
3469702	99	43	39,3	cyclictest	3545098	-21	/usr/share/muni	08:25:13	0
3469702	99	43	39,3	cyclictest	3469342	-21	kworker/u8:0+events_unbound	07:10:10	0
3469702	99	43	38,3	cyclictest	3721812	-21	kworker/u8:1+flush-179:0	11:40:07	0
3469702	99	43	38,3	cyclictest	3569567	-21	kworker/u8:0+flush-179:0	09:00:05	0
3469702	99	43	30,12	cyclictest	2646808	-1	kworker/0:1H+kblockd	08:14:22	0
3469711	99	42	0,2	cyclictest	3605976	-21	ThreadPoolSingl	08:31:43	3
3469708	99	42	38,3	cyclictest	3662676	-21	kworker/u8:3+events_unbound	10:38:19	2
3469708	99	42	38,3	cyclictest	3614648	-21	kworker/u8:0+events_unbound	10:24:22	2
3469708	99	42	38,3	cyclictest	3505129	-21	latency_hist	07:45:01	2
3469708	99	42	35,3	cyclictest	3514937	-31	munin-html	07:50:41	2
3469706	99	42	38,3	cyclictest	3464408	-21	kworker/u8:3+events_unbound	07:20:35	1
3469702	99	42	38,3	cyclictest	3515204	-21	kworker/u8:3+flush-179:0	08:45:14	0
3469702	99	42	37,3	cyclictest	3691949	-21	kworker/u8:5+flush-179:0	11:10:15	0
3469702	99	42	36,4	cyclictest	3490062	-21	latency_hist	07:30:01	0
3469711	99	41	38,2	cyclictest	3485637	-21	kworker/u8:2+flush-179:0	07:35:35	3
3469711	99	41	37,3	cyclictest	3485443	-21	/usr/share/muni	07:25:07	3
3469711	99	41	34,6	cyclictest	3434946	-1	kworker/3:2H+kblockd	08:54:18	3
3469708	99	41	37,2	cyclictest	3534939	-21	kworker/2:0+pm	08:32:53	2
3469708	99	41	21,7	cyclictest	3673231	-21	/usr/share/muni	10:45:13	2
3469706	99	41	37,3	cyclictest	3492748	-21	kworker/u8:1+events_unbound	08:00:36	1
3469706	99	41	35,4	cyclictest	3675589	-21	kworker/u8:2+flush-179:0	11:35:08	1
3469706	99	41	32,7	cyclictest	3614648	-21	kworker/u8:0+events_unbound	10:00:19	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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