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 highest latencies:

System rack7slot2.osadl.org (updated Fri Nov 07, 2025 12:44:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
492708	99	204	194,7	cyclictest	53	-21	kswapd0	09:45:09	0
492708	99	120	108,9	cyclictest	574338	-21	kworker/u4:4+events_unbound	10:35:19	0
492710	99	115	105,7	cyclictest	618221	-21	kworker/u4:2+events_unbound	11:40:32	1
492708	99	113	105,6	cyclictest	644923	-21	kworker/u4:6+events_unbound	12:30:40	0
492710	99	108	93,11	cyclictest	638557	-21	kworker/u4:3+events_unbound	12:05:38	1
492710	99	103	77,5	cyclictest	644923	-21	kworker/u4:6+events_unbound	12:15:38	1
492710	99	102	94,5	cyclictest	581334	-21	kworker/u4:11+events_unbound	10:45:20	1
492710	99	102	52,11	cyclictest	659294	-21	wc	12:30:40	1
492708	99	102	90,8	cyclictest	581334	-21	kworker/u4:11+events_unbound	11:00:27	0
492708	99	102	87,11	cyclictest	53	-21	kswapd0	10:15:15	0
492710	99	96	87,6	cyclictest	501683	-21	kworker/u4:17+events_unbound	09:15:00	1
492710	99	95	80,6	cyclictest	567837	-21	kworker/u4:0+events_unbound	10:20:17	1
492710	99	94	85,6	cyclictest	574339	-21	kworker/u4:6+events_unbound	10:40:21	1
492708	99	94	86,6	cyclictest	635046	-21	kworker/u4:18+events_unbound	12:10:38	0
492710	99	91	83,5	cyclictest	587809	-21	kworker/u4:3+events_unbound	10:50:25	1
492710	99	91	61,10	cyclictest	607951	-21	kworker/u4:7+events_unbound	11:25:30	1
492708	99	82	74,6	cyclictest	501689	-21	kworker/u4:19+events_unbound	08:29:46	0
492710	99	81	72,6	cyclictest	525672	-21	kworker/u4:15+events_unbound	09:55:12	1
492708	99	81	75,4	cyclictest	621718	-21	kworker/u4:4+events_unbound	11:55:34	0
492708	99	80	70,7	cyclictest	532039	-21	kworker/u4:1+events_unbound	09:25:01	0
492708	99	79	71,6	cyclictest	497816	-21	kworker/u4:14+events_unbound	07:29:38	0
492708	99	79	71,6	cyclictest	495212	-21	kworker/u4:10+events_unbound	08:24:46	0
492710	99	75	67,6	cyclictest	522432	-21	apt-get	09:05:09	1
492708	99	74	29,23	cyclictest	552742	-21	/usr/sbin/munin	09:55:20	0
492710	99	72	60,9	cyclictest	607952	-21	kworker/u4:8+events_unbound	11:50:33	1
492708	99	71	28,23	cyclictest	506817	-21	grep	08:00:41	0
492708	99	71	28,23	cyclictest	506817	-21	grep	08:00:40	0
492710	99	70	62,6	cyclictest	625016	-21	kworker/u4:13+events_unbound	12:00:38	1
492710	99	70	61,7	cyclictest	574335	-21	kworker/u4:0+events_unbound	11:10:29	1
492708	99	70	21,24	cyclictest	543040	-21	aten_r7power_cu	09:40:16	0
492708	99	69	24,25	cyclictest	606727	-21	ssh	11:15:24	0
492708	99	68	27,16	cyclictest	589458	-21	ssh	10:49:50	0
492708	99	68	25,20	cyclictest	640730	-21	awk	12:05:41	0
492710	99	67	56,4	cyclictest	0	-21	swapper/1	09:25:37	1
492708	99	67	29,11	cyclictest	560257	-21	ntpq	10:05:32	0
492708	99	67	28,15	cyclictest	638340	-21	ssh	12:01:27	0
492708	99	67	25,21	cyclictest	654050	-21	munin-run	12:25:01	0
492710	99	66	56,7	cyclictest	513366	-21	kworker/u4:5+events_unbound	09:20:13	1
492708	99	66	40,10	cyclictest	549498	-21	apt-get	09:50:21	0
492708	99	66	37,26	cyclictest	624377	-21	unixbench_multi	11:40:40	0
492708	99	66	31,11	cyclictest	516708	-21	ntpq	08:40:24	0
492708	99	66	29,13	cyclictest	600418	-21	ntpq	11:05:27	0
492710	99	65	54,7	cyclictest	644922	-21	kworker/u4:5+xprtiod	12:20:13	1
492710	99	65	53,8	cyclictest	607949	-21	kworker/u4:4+events_unbound	11:20:32	1
492708	99	65	38,10	cyclictest	627300	-21	ntpq	11:45:39	0
492708	99	65	38,10	cyclictest	627300	-21	ntpq	11:45:38	0
492708	99	65	28,11	cyclictest	563410	-21	ntpq	10:10:34	0
492708	99	65	28,11	cyclictest	563410	-21	ntpq	10:10:34	0
492708	99	65	25,15	cyclictest	620538	-21	ntpq	11:35:40	0
492708	99	65	22,9	cyclictest	665612	-21	ssh	12:39:56	0
492708	99	64	39,17	cyclictest	504294	-21	apt-get	07:55:05	0
492708	99	64	27,10	cyclictest	517665	-21	df_inode	08:45:19	0
492708	99	64	26,11	cyclictest	613128	-21	df_inode	11:25:17	0
492710	99	63	54,7	cyclictest	548220	-21	kworker/u4:10+events_unbound	10:10:15	1
492710	99	63	54,7	cyclictest	548220	-21	kworker/u4:10+events_unbound	10:10:14	1
492708	99	63	27,13	cyclictest	578634	-21	ssh	10:34:11	0
492708	99	63	26,14	cyclictest	534532	-21	ssh	09:25:47	0
492708	99	62	55,5	cyclictest	513366	-21	kworker/u4:5+events_unbound	09:20:00	0
492708	99	62	25,14	cyclictest	538226	-21	ssh	09:31:45	0
492708	99	62	16,23	cyclictest	0	-21	swapper/0	10:25:30	0
492710	99	61	53,6	cyclictest	0	-21	swapper/1	12:10:30	1
492708	99	61	41,16	cyclictest	496108	-21	ntpq	07:20:32	0
492708	99	61	21,23	cyclictest	0	-21	swapper/0	09:35:28	0
492710	99	60	51,7	cyclictest	535075	-21	kworker/u4:2+events_unbound	09:35:01	1
492710	99	60	51,6	cyclictest	619919	-21	/usr/sbin/munin	11:35:20	1
492708	99	60	42,13	cyclictest	493463	-21	ntpq	07:10:33	0
492708	99	60	26,11	cyclictest	583193	-21	irqstats	10:40:22	0
492708	99	60	24,11	cyclictest	630728	-21	ntpq	11:50:32	0
492708	99	60	23,14	cyclictest	571285	-21	ssh	10:23:05	0
492708	99	60	23,13	cyclictest	524666	-21	ntpq	09:10:24	0
492710	99	59	52,5	cyclictest	492628	-21	kworker/u4:4+events_unbound	08:05:01	1
492710	99	59	52,5	cyclictest	492628	-21	kworker/u4:4+events_unbound	08:05:01	1
492710	99	59	43,9	cyclictest	493963	-21	modprobe	07:15:00	1
492708	99	59	27,9	cyclictest	590850	-21	find	10:50:38	0
492708	99	59	27,11	cyclictest	655146	-21	ntp_states	12:25:34	0
492708	99	59	24,12	cyclictest	616532	-21	diskstats	11:30:19	0
492708	99	59	23,12	cyclictest	611347	-21	ssh	11:22:20	0
492708	99	58	44,10	cyclictest	508955	-21	ntpq	08:10:24	0
492708	99	58	42,11	cyclictest	502502	-21	ntpq	07:45:28	0
492708	99	58	41,12	cyclictest	503175	-21	apt-get	07:50:13	0
492708	99	58	27,9	cyclictest	557360	-21	users	10:00:40	0
492708	99	58	26,9	cyclictest	514206	-21	ntpq	08:30:31	0
492710	99	57	50,5	cyclictest	587810	-21	kworker/u4:8+events_unbound	11:00:00	1
492710	99	57	48,6	cyclictest	548218	-21	kworker/u4:0+events_unbound	09:50:12	1
492710	99	57	47,7	cyclictest	0	-21	swapper/1	11:05:27	1
492710	99	57	38,14	cyclictest	53	-21	kswapd0	09:45:09	1
492708	99	57	42,11	cyclictest	500613	-21	apt-get	07:40:12	0
492708	99	57	40,12	cyclictest	0	-21	swapper/0	09:05:09	0
492708	99	57	39,14	cyclictest	498630	-21	ntpq	07:30:32	0
492708	99	57	39,14	cyclictest	498630	-21	ntpq	07:30:32	0
492708	99	57	36,4	cyclictest	647457	-21	ntpq	12:15:31	0
492708	99	57	26,9	cyclictest	518961	-21	fschecks_count	08:50:18	0
492708	99	56	43,9	cyclictest	507667	-21	ntpq	08:05:25	0
492710	99	55	41,6	cyclictest	496532	-21	kworker/u4:7+events_unbound	08:39:50	1
492708	99	55	40,11	cyclictest	515514	-21	ntpq	08:35:35	0
492708	99	55	40,10	cyclictest	593796	-21	ntpq	10:55:34	0
492708	99	54	24,25	cyclictest	606066	-21	sed	11:15:01	0
492710	99	53	46,5	cyclictest	574339	-21	kworker/u4:6+events_unbound	10:30:18	1
492710	99	53	45,5	cyclictest	567290	-21	unixbench_singl	10:15:48	1
492710	99	53	34,6	cyclictest	529976	-21	munin-plugin-st	09:20:01	1
492708	99	53	39,11	cyclictest	521899	-21	ntpq	09:00:31	0
492708	99	53	39,11	cyclictest	521899	-21	ntpq	09:00:30	0
492708	99	53	22,9	cyclictest	499308	-21	apt-get	07:35:13	0
492708	99	52	32,7	cyclictest	510229	-21	ntpq	08:15:24	0
492708	99	52	23,4	cyclictest	520005	-21	apt-get	08:55:14	0
492708	99	52	21,9	cyclictest	494800	-21	ntpq	07:15:34	0
492710	99	51	42,7	cyclictest	518530	-21	systemd	08:49:52	1
492710	99	50	42,6	cyclictest	501353	-21	sendmail_mailqu	07:40:37	1
492710	99	50	40,6	cyclictest	0	-21	swapper/1	12:40:00	1
492710	99	50	39,7	cyclictest	0	-21	swapper/1	07:55:40	1
492710	99	49	6,24	cyclictest	579947	-21	ssh	10:35:29	1
492710	99	49	42,5	cyclictest	546144	-21	munin-run	09:45:00	1
492710	99	49	40,7	cyclictest	575678	-21	latency_hist	10:30:01	1
492710	99	49	38,8	cyclictest	0	-21	swapper/1	11:30:36	1
492710	99	49	37,9	cyclictest	0	-21	swapper/1	09:00:38	1
492710	99	49	37,9	cyclictest	0	-21	swapper/1	09:00:37	1
492710	99	49	33,12	cyclictest	0	-21	swapper/1	11:55:13	1
492710	99	48	38,7	cyclictest	655453	-21	timerwakeupswit	12:25:38	1
492710	99	47	40,5	cyclictest	559663	-21	aten_r7power_vo	10:05:18	1
492710	99	47	38,7	cyclictest	500381	-21	kworker/u4:16+events_unbound	07:49:39	1
492710	99	46	39,5	cyclictest	496534	-21	kworker/u4:13+events_unbound	08:19:45	1
492710	99	46	36,5	cyclictest	495212	-21	kworker/u4:10-rpciod	07:25:01	1
492710	99	45	36,6	cyclictest	581334	-21	kworker/u4:11+events_unbound	11:15:27	1
492710	99	45	32,10	cyclictest	0	-21	swapper/1	11:45:18	1
492710	99	45	32,10	cyclictest	0	-21	swapper/1	11:45:17	1
492710	99	45	2,33	cyclictest	556762	-21	rm	10:00:26	1
492710	99	44	38,4	cyclictest	513388	-21	systemd	08:29:46	1
492710	99	44	35,7	cyclictest	519011	-21	fschecks_count	08:50:20	1
492710	99	44	33,8	cyclictest	498899	-21	timerandwakeup	07:30:41	1
492710	99	44	33,8	cyclictest	498899	-21	timerandwakeup	07:30:40	1
492710	99	43	35,6	cyclictest	500392	-21	systemd	07:39:38	1
492710	99	43	35,5	cyclictest	509149	-21	sendmail_mailqu	08:10:35	1
492710	99	43	34,7	cyclictest	0	-21	swapper/1	09:35:19	1
492710	99	42	35,5	cyclictest	520032	-21	grep	08:55:17	1
492710	99	42	34,6	cyclictest	508203	-21	kworker/u4:2+events_unbound	08:09:46	1
492710	99	42	33,7	cyclictest	503592	-21	gltestperf	07:50:20	1
492708	99	42	36,3	cyclictest	492682	-21	munin-run	07:10:01	0
492710	99	41	32,5	cyclictest	0	-21	swapper/1	08:30:26	1
492710	99	40	31,6	cyclictest	0	-21	swapper/1	11:00:22	1
492710	99	39	30,5	cyclictest	0	-21	swapper/1	08:25:01	1
492710	99	39	28,8	cyclictest	0	-21	swapper/1	07:15:18	1
492710	99	39	28,7	cyclictest	0	-21	swapper/1	07:25:24	1
492710	99	38	31,4	cyclictest	0	-21	swapper/1	08:40:22	1
492710	99	24	16,4	cyclictest	490169	-21	kworker/u4:6-rpciod	07:10:02	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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