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Default latency plot of system in rack #e, slot #6

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
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rackeslot6.osadl.org (updated Mon Dec 08, 2025 12:44:50)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
368331	99	99	88,8	cyclictest	371493	-21	latency_hist	07:20:01	0
368331	99	89	83,4	cyclictest	374697	-21	kworker/u8:0+events_unbound	07:40:24	0
368331	99	85	79,4	cyclictest	374697	-21	kworker/u8:0+events_unbound	07:50:23	0
368331	99	83	77,4	cyclictest	374697	-21	kworker/u8:0+events_unbound	07:45:24	0
368331	99	81	70,9	cyclictest	400554	-21	cat	08:50:00	0
368331	99	80	70,8	cyclictest	456949	-21	/usr/sbin/munin	11:45:24	0
368331	99	79	69,7	cyclictest	446834	-21	latency_hist	11:15:01	0
368332	99	78	67,8	cyclictest	437295	-21	latency_hist	10:45:01	1
368331	99	77	72,4	cyclictest	452481	-21	kworker/u8:2+events_unbound	11:55:01	0
368332	99	72	64,6	cyclictest	389040	-21	kworker/u8:3+flush-179:0	09:00:26	1
368331	99	72	65,5	cyclictest	467898	-21	kworker/u8:1+flush-179:0	12:20:27	0
368331	99	72	63,7	cyclictest	440466	-21	latency_hist	10:55:01	0
368332	99	71	68,2	cyclictest	374697	-21	kworker/u8:0+flush-179:0	07:40:01	1
368332	99	71	60,8	cyclictest	448700	-21	latency_hist	11:20:01	1
368331	99	71	65,3	cyclictest	426180	-21	kworker/u8:1+flush-179:0	10:10:25	0
368331	99	70	62,6	cyclictest	374697	-21	kworker/u8:0+flush-179:0	07:35:24	0
368331	99	69	63,4	cyclictest	368232	-21	kworker/u8:1+flush-179:0	07:30:25	0
368332	99	67	62,4	cyclictest	435948	-21	kworker/u8:0+flush-179:0	10:45:26	1
368331	99	67	61,4	cyclictest	389040	-21	kworker/u8:3+flush-179:0	09:00:21	0
368331	99	67	57,8	cyclictest	453478	-21	apt-get	11:34:11	0
368331	99	65	58,5	cyclictest	422926	-21	kworker/u8:2+events_unbound	10:05:00	0
368341	99	64	57,5	cyclictest	410226	-21	turbostat	09:20:01	3
368331	99	64	56,6	cyclictest	467265	-21	kworker/u8:0+flush-179:0	12:35:21	0
368331	99	63	55,6	cyclictest	400651	-21	kworker/u8:0+flush-179:0	08:55:22	0
368331	99	63	53,7	cyclictest	389006	-21	latency_hist	08:15:00	0
368331	99	63	53,7	cyclictest	389006	-21	latency_hist	08:15:00	0
368332	99	62	53,7	cyclictest	450290	-21	latency_hist	11:25:02	1
368332	99	62	53,7	cyclictest	424559	-21	latency_hist	10:05:00	1
368331	99	62	56,5	cyclictest	389040	-21	kworker/u8:3+events_unbound	08:25:12	0
368331	99	62	56,4	cyclictest	447329	-21	kworker/u8:1+flush-179:0	11:25:26	0
368331	99	62	55,4	cyclictest	447637	-21	diskstats	11:15:15	0
368331	99	61	1,58	cyclictest	384284	-21	munin-run	08:00:00	0
368332	99	60	52,6	cyclictest	438108	-21	kworker/u8:1+events_unbound	11:00:00	1
368331	99	60	53,4	cyclictest	418724	-21	kworker/u8:1+flush-179:0	09:50:15	0
368341	99	59	57,1	cyclictest	0	-21	swapper/3	11:04:59	3
368332	99	59	53,4	cyclictest	434136	-21	kworker/u8:1+flush-179:0	10:40:00	1
368332	99	59	50,7	cyclictest	407579	-21	kworker/u8:0+flush-179:0	09:40:00	1
368331	99	59	51,6	cyclictest	452481	-21	kworker/u8:2+flush-179:0	11:55:26	0
368332	99	58	49,7	cyclictest	467898	-21	kworker/u8:1+flush-179:0	12:25:01	1
368331	99	58	53,4	cyclictest	418431	-21	/usr/sbin/munin	09:45:24	0
368331	99	58	52,4	cyclictest	418724	-21	kworker/u8:1+flush-179:0	09:55:14	0
368331	99	58	50,6	cyclictest	452481	-21	kworker/u8:2+flush-179:0	11:39:59	0
368332	99	57	45,9	cyclictest	392202	-21	latency_hist	08:25:00	1
368331	99	57	1,54	cyclictest	435746	-21	munin-run	10:40:01	0
368332	99	56	50,4	cyclictest	447329	-21	kworker/u8:1+flush-179:0	11:30:00	1
368332	99	56	45,8	cyclictest	466510	-21	apt-get	12:15:12	1
368331	99	56	47,5	cyclictest	422970	-21	kworker/u8:3+events_unbound	10:30:00	0
368331	99	56	47,5	cyclictest	422970	-21	kworker/u8:3+events_unbound	10:30:00	0
368332	99	55	51,3	cyclictest	425499	-21	kworker/u8:0+flush-179:0	10:10:00	1
368332	99	55	49,4	cyclictest	426180	-21	kworker/u8:1+flush-179:0	10:10:22	1
368332	99	54	44,8	cyclictest	368549	-21	apt-get	07:10:11	1
368332	99	54	43,8	cyclictest	466254	-21	latency_hist	12:15:01	1
368331	99	54	49,4	cyclictest	440501	-21	kworker/u8:3+flush-179:0	11:05:22	0
368331	99	54	48,4	cyclictest	422970	-21	kworker/u8:3+flush-179:0	10:15:29	0
368331	99	54	45,7	cyclictest	400651	-21	kworker/u8:0+flush-179:0	08:55:00	0
368332	99	53	42,9	cyclictest	271	-21	systemd-journal	08:05:01	1
368332	99	52	48,3	cyclictest	389040	-21	kworker/u8:3+flush-179:0	08:59:09	1
368331	99	52	46,4	cyclictest	467265	-21	kworker/u8:0+flush-179:0	12:35:00	0
368331	99	52	46,4	cyclictest	407579	-21	kworker/u8:0+flush-179:0	09:20:25	0
368331	99	52	44,6	cyclictest	416592	-21	latency_hist	09:40:00	0
368332	99	51	44,5	cyclictest	271	-21	systemd-journal	11:07:11	1
368332	99	51	42,7	cyclictest	463081	-21	latency_hist	12:05:01	1
368331	99	51	46,4	cyclictest	410271	-21	kworker/u8:3+flush-179:0	09:25:23	0
368331	99	51	45,4	cyclictest	368232	-21	kworker/u8:1+flush-179:0	07:25:23	0
368331	99	51	43,5	cyclictest	464666	-21	latency_hist	12:10:01	0
368332	99	50	49,1	cyclictest	0	-21	swapper/1	12:05:59	1
368332	99	50	41,7	cyclictest	455118	-21	latency_hist	11:40:01	1
368331	99	50	44,4	cyclictest	438108	-21	kworker/u8:1+flush-179:0	10:59:56	0
368332	99	49	42,6	cyclictest	407579	-21	kworker/u8:0+flush-179:0	09:30:26	1
368332	99	49	42,5	cyclictest	412080	-21	apt-get	09:25:13	1
368332	99	49	41,6	cyclictest	368247	-21	latency_hist	07:10:02	1
368331	99	49	40,6	cyclictest	407579	-21	kworker/u8:0+events_unbound	09:45:00	0
46707	91	48	0,12	ptp4l	44	1	ktimers/3	07:10:00	3
368332	99	48	45,2	cyclictest	389040	-21	kworker/u8:3+events_unbound	08:25:22	1
368331	99	48	41,5	cyclictest	464701	-21	kworker/u8:3+flush-179:0	12:15:01	0
368332	99	47	40,5	cyclictest	461476	-21	latency_hist	12:00:01	1
368332	99	47	37,7	cyclictest	471036	-21	latency_hist	12:30:00	1
368331	99	47	40,5	cyclictest	447329	-21	kworker/u8:1+events_unbound	11:20:24	0
368331	99	46	41,4	cyclictest	430963	-21	kworker/u8:2+flush-179:0	10:30:23	0
368331	99	46	41,3	cyclictest	415035	-21	systemd-run	09:35:01	0
368332	99	45	44,1	cyclictest	0	-21	swapper/1	12:35:59	1
368332	99	45	39,5	cyclictest	407579	-21	kworker/u8:0+flush-179:0	09:20:25	1
368332	99	45	39,4	cyclictest	374697	-21	kworker/u8:0+flush-179:0	08:10:21	1
368332	99	45	39,4	cyclictest	374697	-21	kworker/u8:0+flush-179:0	08:10:20	1
368332	99	45	38,5	cyclictest	374697	-21	kworker/u8:0+flush-179:0	08:10:00	1
368331	99	45	40,4	cyclictest	425499	-21	kworker/u8:0+flush-179:0	10:05:24	0
368331	99	45	40,4	cyclictest	374697	-21	kworker/u8:0+flush-179:0	08:40:22	0
368331	99	45	39,4	cyclictest	455158	-21	kworker/u8:0+flush-179:0	11:45:01	0
368331	99	45	39,4	cyclictest	374697	-21	kworker/u8:0+flush-179:0	08:35:21	0
368332	99	44	35,7	cyclictest	271	-21	systemd-journal	11:15:00	1
368331	99	44	38,4	cyclictest	435948	-21	kworker/u8:0+flush-179:0	10:40:23	0
368336	99	43	0,41	cyclictest	0	-21	swapper/2	10:07:58	2
368332	99	43	38,4	cyclictest	464647	-21	kworker/u8:2+flush-179:0	12:30:23	1
368331	99	43	38,4	cyclictest	389040	-21	kworker/u8:3+flush-179:0	09:05:24	0
368331	99	43	31,5	cyclictest	464647	-21	kworker/u8:2+events_unbound	12:25:23	0
368341	99	42	0,40	cyclictest	400413	-21	turbostat	08:50:00	3
368332	99	42	0,1	cyclictest	0	-21	swapper/1	09:09:58	1
368331	99	42	36,4	cyclictest	368232	-21	kworker/u8:1+events_unbound	07:20:13	0
368331	99	42	34,6	cyclictest	461094	-21	kworker/u8:1+flush-179:0	12:05:01	0
368331	99	42	0,5	cyclictest	387426	-21	apt	08:10:01	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2020-10-04 - 12:21