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 Tue Feb 24, 2026 12:44:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
538518	99	150	135,10	cyclictest	724366	-21	kworker/u4:12+events_unbound	12:30:33	0
538519	99	112	96,5	cyclictest	654428	-21	kworker/u4:0+events_unbound	10:50:10	1
538518	99	101	84,15	cyclictest	589218	-21	kworker/u4:7+events_unbound	09:34:48	0
538519	99	99	90,7	cyclictest	719335	-21	kworker/u4:7+events_unbound	12:15:28	1
538518	99	98	85,10	cyclictest	676509	-21	kworker/u4:4+events_unbound	11:15:16	0
538519	99	97	86,7	cyclictest	54	-21	kswapd0	11:15:14	1
538518	99	93	85,6	cyclictest	624120	-21	kworker/u4:8+events_unbound	10:14:59	0
538518	99	88	64,9	cyclictest	724366	-21	kworker/u4:12+events_unbound	12:25:32	0
538519	99	84	76,6	cyclictest	589217	-21	kworker/u4:6+events_unbound	09:59:55	1
538518	99	84	76,6	cyclictest	685365	-21	kworker/u4:12+events_unbound	11:30:18	0
538518	99	83	77,4	cyclictest	565143	-21	kworker/u4:15+events_unbound	08:59:43	0
538519	99	81	61,7	cyclictest	658831	-21	kworker/u4:11+events_unbound	11:00:13	1
538519	99	80	72,6	cyclictest	637375	-21	kworker/u4:4+events_unbound	10:30:03	1
538518	99	80	73,5	cyclictest	719975	-21	kworker/u4:9+events_unbound	12:20:31	0
538518	99	80	72,5	cyclictest	706782	-21	kworker/u4:4+events_unbound	11:50:00	0
538518	99	80	72,5	cyclictest	706782	-21	kworker/u4:4+events_unbound	11:49:59	0
538518	99	80	71,7	cyclictest	563886	-21	kworker/u4:13+events_unbound	09:14:46	0
538519	99	79	69,7	cyclictest	741389	-21	kworker/u4:6+events_unbound	12:35:34	1
538518	99	79	61,6	cyclictest	551248	-21	kworker/u4:0+events_unbound	08:39:39	0
538519	99	78	71,5	cyclictest	546119	-21	kworker/u4:3+events_unbound	08:34:38	1
538519	99	78	69,7	cyclictest	536034	-21	kworker/u4:4+events_unbound	07:19:25	1
538519	99	77	70,5	cyclictest	551248	-21	kworker/u4:0+events_unbound	09:24:47	1
538518	99	74	66,6	cyclictest	589216	-21	kworker/u4:5+events_unbound	09:54:52	0
538519	99	73	65,6	cyclictest	680924	-21	kworker/u4:9+events_unbound	11:25:16	1
538518	99	73	65,6	cyclictest	693546	-21	kworker/u4:14+events_unbound	11:50:22	0
538518	99	73	65,6	cyclictest	628581	-21	kworker/u4:10+events_unbound	10:25:03	0
538519	99	72	63,6	cyclictest	685359	-21	kworker/u4:0+events_unbound	11:40:19	1
538518	99	72	64,6	cyclictest	646200	-21	kworker/u4:4+events_unbound	10:45:06	0
538519	99	71	56,5	cyclictest	555040	-21	kworker/u4:4+events_unbound	08:25:00	1
538518	99	71	64,5	cyclictest	555042	-21	kworker/u4:7+events_unbound	08:20:00	0
538518	99	71	40,28	cyclictest	54	-21	kswapd0	11:40:14	0
538518	99	70	58,5	cyclictest	553783	-21	kworker/u4:10+events_unbound	09:44:51	0
538518	99	70	36,25	cyclictest	538461	-21	cron	07:10:01	0
538519	99	66	58,5	cyclictest	624116	-21	kworker/u4:0+events_unbound	10:15:00	1
538519	99	65	57,6	cyclictest	711144	-21	kworker/u4:1+events_unbound	11:55:22	1
538519	99	62	55,5	cyclictest	544775	-21	kworker/u4:15+events_unbound	07:45:01	1
538518	99	62	54,6	cyclictest	593699	-21	kworker/u4:11+events_unbound	09:48:59	0
538518	99	62	54,5	cyclictest	646197	-21	kworker/u4:1+events_unbound	10:56:00	0
538518	99	62	49,6	cyclictest	593700	-21	kworker/u4:12+events_unbound	09:39:00	0
538518	99	61	54,5	cyclictest	680924	-21	kworker/u4:9+events_unbound	11:21:26	0
538518	99	59	45,12	cyclictest	715538	-21	kworker/u4:3+events_unbound	11:57:59	0
538519	99	58	49,7	cyclictest	633031	-21	kworker/u4:5+events_unbound	11:10:14	1
538518	99	58	49,7	cyclictest	628582	-21	kworker/u4:11+events_unbound	10:21:58	0
538519	99	57	50,5	cyclictest	543519	-21	kworker/u4:12+events_unbound	08:19:36	1
538519	99	57	48,7	cyclictest	549913	-21	systemd	07:54:32	1
538519	99	57	44,11	cyclictest	725952	-21	apt-get	12:10:14	1
538518	99	57	49,6	cyclictest	15	1	ktimers/0	09:21:50	0
538518	99	56	50,4	cyclictest	551248	-21	kworker/u4:0+events_unbound	08:45:01	0
538518	99	56	49,5	cyclictest	693547	-21	kworker/u4:15+events_unbound	11:36:59	0
538518	99	56	48,6	cyclictest	644319	-21	/usr/sbin/munin	10:35:25	0
538518	99	56	48,6	cyclictest	644319	-21	/usr/sbin/munin	10:35:24	0
538519	99	55	48,5	cyclictest	551248	-21	kworker/u4:0+events_unbound	09:39:49	1
538519	99	55	47,6	cyclictest	529909	-21	kworker/u4:13+events_unbound	08:15:01	1
538519	99	55	44,6	cyclictest	0	-21	swapper/1	09:05:01	1
538519	99	55	43,5	cyclictest	676509	-21	kworker/u4:4+events_unbound	11:20:16	1
538518	99	55	48,5	cyclictest	536036	-21	kworker/u4:7+events_unbound	07:39:31	0
538519	99	54	46,5	cyclictest	670231	-21	/usr/sbin/munin	11:05:22	1
538518	99	54	35,17	cyclictest	752142	-21	idleruntime-cro	12:40:00	0
538519	99	53	46,4	cyclictest	0	-21	swapper/1	10:38:37	1
538519	99	53	46,4	cyclictest	0	-21	swapper/1	10:38:36	1
538519	99	53	45,6	cyclictest	610960	-21	kworker/u4:14+events_unbound	10:04:57	1
538519	99	53	45,6	cyclictest	539719	-21	kworker/u4:0+events_unbound	07:30:01	1
538519	99	53	42,8	cyclictest	600328	-21	aten_r7power_en	09:45:17	1
538518	99	53	48,4	cyclictest	584728	-21	kworker/u4:4+events_unbound	10:01:01	0
538518	99	53	45,6	cyclictest	593701	-21	kworker/u4:13+events_unbound	10:00:02	0
538518	99	53	44,7	cyclictest	630461	-21	ls	10:20:02	0
538518	99	53	42,8	cyclictest	641162	-21	kworker/u4:6+events_unbound	11:05:01	0
538518	99	53	39,12	cyclictest	658830	-21	kworker/u4:7+events_unbound	11:10:17	0
538518	99	53	33,17	cyclictest	610960	-21	kworker/u4:14-rpciod	10:05:20	0
538519	99	52	45,5	cyclictest	709760	-21	/usr/sbin/munin	11:50:32	1
538519	99	52	45,5	cyclictest	630457	-21	grep	10:20:02	1
538519	99	52	44,6	cyclictest	536034	-21	kworker/u4:4+events_unbound	07:14:25	1
538519	99	52	44,6	cyclictest	536034	-21	kworker/u4:4+events_unbound	07:14:25	1
538519	99	52	42,8	cyclictest	662323	-21	unixbench_multi	10:55:37	1
538519	99	52	42,7	cyclictest	728755	-21	kworker/u4:15-rpciod	12:30:21	1
538519	99	52	41,5	cyclictest	540973	-21	kworker/u4:9+events_unbound	07:24:27	1
538518	99	52	45,5	cyclictest	722943	-21	mailstats	12:05:39	0
538518	99	52	45,5	cyclictest	555039	-21	kworker/u4:2+events_unbound	08:49:40	0
538518	99	52	44,5	cyclictest	528561	-21	kworker/u4:6+events_unbound	09:05:01	0
538518	99	52	43,6	cyclictest	648079	-21	aten2__	10:40:15	0
538519	99	51	44,5	cyclictest	537253	-21	kworker/u4:8+events_unbound	07:10:01	1
538518	99	51	44,5	cyclictest	724367	-21	kworker/u4:13+events_unbound	12:10:03	0
538518	99	51	31,17	cyclictest	0	-21	swapper/0	11:05:36	0
538519	99	50	44,4	cyclictest	641797	-21	kworker/u4:8+events_unbound	10:43:43	1
538519	99	50	43,5	cyclictest	551248	-21	kworker/u4:0+events_unbound	09:26:00	1
538519	99	50	41,6	cyclictest	553783	-21	kworker/u4:10+events_unbound	09:45:00	1
538518	99	50	43,5	cyclictest	558103	-21	fschecks_time	08:25:20	0
538518	99	50	41,7	cyclictest	529909	-21	kworker/u4:13+events_unbound	08:14:36	0
538519	99	49	42,5	cyclictest	565143	-21	kworker/u4:15+events_unbound	09:17:48	1
538519	99	49	41,5	cyclictest	685366	-21	kworker/u4:13-rpciod	11:30:26	1
538519	99	49	40,5	cyclictest	0	-21	swapper/1	10:20:34	1
538518	99	49	42,5	cyclictest	305371	-21	kworker/u4:1+events_unbound	07:20:01	0
538518	99	49	41,6	cyclictest	529909	-21	kworker/u4:13+events_unbound	08:09:36	0
538519	99	48	41,5	cyclictest	722451	-21	if_eth0	12:05:20	1
538519	99	48	41,5	cyclictest	653422	-21	mailstats	10:45:39	1
538519	99	48	39,7	cyclictest	587086	-21	basename	09:30:15	1
538519	99	48	39,6	cyclictest	0	-21	swapper/1	09:10:31	1
538519	99	48	39,5	cyclictest	0	-21	swapper/1	10:05:30	1
538519	99	48	36,6	cyclictest	711144	-21	kworker/u4:1+events_unbound	12:01:03	1
538518	99	48	41,5	cyclictest	543750	-21	aten2__	07:30:16	0
538518	99	48	39,7	cyclictest	551484	-21	aten2__	08:00:15	0
538518	99	48	39,7	cyclictest	538747	-21	aten_r7power_en	07:10:21	0
538518	99	48	39,7	cyclictest	538747	-21	aten_r7power_en	07:10:20	0
538518	99	48	39,5	cyclictest	0	-21	swapper/0	09:25:12	0
538519	99	47	40,5	cyclictest	689772	-21	kworker/u4:7+events_unbound	11:36:00	1
538519	99	47	39,6	cyclictest	724366	-21	kworker/u4:12+events_unbound	12:27:01	1
538519	99	47	37,7	cyclictest	0	-21	swapper/1	12:20:11	1
538518	99	47	39,6	cyclictest	721647	-21	grep	12:05:01	0
538518	99	47	39,5	cyclictest	643398	-21	idleruntime-cro	10:35:01	0
538518	99	47	37,8	cyclictest	734813	-21	latency_hist	12:20:01	0
538518	99	47	37,8	cyclictest	541292	-21	aten_r7power_en	07:20:15	0
538518	99	47	35,10	cyclictest	568991	-21	idleruntime-cro	09:10:01	0
538519	99	46	39,5	cyclictest	565371	-21	aten2__	08:55:14	1
538519	99	46	38,6	cyclictest	635558	-21	gltestperf	10:25:24	1
538519	99	46	37,6	cyclictest	706784	-21	kworker/u4:5+events_unbound	11:48:01	1
538519	99	46	37,6	cyclictest	706784	-21	kworker/u4:5+events_unbound	11:48:01	1
538518	99	46	39,5	cyclictest	553783	-21	kworker/u4:10+events_unbound	08:54:42	0
538519	99	45	38,5	cyclictest	589216	-21	kworker/u4:5-rpciod	09:50:20	1
538519	99	45	37,5	cyclictest	0	-21	swapper/1	08:05:32	1
538518	99	45	38,5	cyclictest	549965	-21	dpkg	07:55:01	0
538519	99	44	37,5	cyclictest	558103	-21	fschecks_time	08:25:20	1
538519	99	44	34,8	cyclictest	562641	-21	systemd	08:44:39	1
538518	99	44	34,7	cyclictest	0	-21	swapper/0	08:30:18	0
538518	99	44	33,8	cyclictest	657000	-21	df_abs	10:50:15	0
538519	99	43	37,4	cyclictest	569123	-21	latency_hist	09:10:01	1
538519	99	43	35,6	cyclictest	551250	-21	kworker/u4:7+events_unbound	08:00:01	1
538519	99	43	33,8	cyclictest	543519	-21	kworker/u4:12+events_unbound	07:35:04	1
538518	99	43	36,5	cyclictest	687172	-21	acpi	11:25:12	0
538519	99	42	30,9	cyclictest	0	-21	swapper/1	08:35:10	1
538518	99	42	30,10	cyclictest	573797	-21	aten_r7power_en	09:15:15	0
538519	99	41	35,4	cyclictest	544817	-21	munin-plugin-st	07:35:00	1
538519	99	41	34,5	cyclictest	563930	-21	munin-plugin-st	08:50:01	1
538519	99	41	34,5	cyclictest	552414	-21	sed	08:00:35	1
538519	99	41	32,7	cyclictest	548427	-21	threads	07:45:38	1
538519	99	40	33,5	cyclictest	564402	-21	fschecks_time	08:50:19	1
538518	99	40	28,9	cyclictest	548502	-21	sort	07:45:40	0
538518	99	39	30,7	cyclictest	0	-21	swapper/0	08:20:18	0
538518	99	39	30,7	cyclictest	0	-21	swapper/0	07:55:25	0
538518	99	39	29,7	cyclictest	547209	-21	timerandwakeup	07:40:37	0
538518	99	38	30,5	cyclictest	0	-21	swapper/0	07:25:17	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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