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 Mon Aug 24, 2026 00:44:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
298194	99	117	109,6	cyclictest	300683	-21	kworker/u4:12+events_unbound	21:17:04	0
298194	99	106	98,6	cyclictest	318781	-21	kworker/u4:4+events_unbound	20:36:55	0
298194	99	99	87,6	cyclictest	318780	-21	kworker/u4:2+events_unbound	21:12:01	0
298194	99	95	87,6	cyclictest	294313	-21	kworker/u4:3+events_unbound	20:21:52	0
298196	99	94	86,6	cyclictest	311009	-21	kworker/u4:13+events_unbound	20:11:51	1
298194	99	93	86,5	cyclictest	486960	-21	kworker/u4:3+events_unbound	00:18:35	0
298196	99	91	83,6	cyclictest	311009	-21	kworker/u4:13+events_unbound	20:16:51	1
298194	99	89	82,5	cyclictest	407176	-21	kworker/u4:2+events_unbound	22:37:22	0
298194	99	89	82,5	cyclictest	318785	-21	kworker/u4:9+events_unbound	20:31:54	0
298194	99	88	81,5	cyclictest	288274	-21	kworker/u4:10+events_unbound	19:36:44	0
298194	99	88	75,6	cyclictest	318784	-21	kworker/u4:8+events_unbound	20:41:55	0
298194	99	82	74,6	cyclictest	294313	-21	kworker/u4:3+events_unbound	19:31:43	0
298194	99	79	71,6	cyclictest	303258	-21	kworker/u4:7+events_unbound	19:26:43	0
298194	99	77	69,6	cyclictest	451587	-21	kworker/u4:5+events_unbound	23:27:31	0
298194	99	77	69,6	cyclictest	300683	-21	kworker/u4:12+events_unbound	20:51:58	0
298194	99	77	69,6	cyclictest	294314	-21	kworker/u4:4+events_unbound	19:21:42	0
298196	99	70	60,8	cyclictest	383516	-21	diskmemload	22:10:29	1
298194	99	69	50,6	cyclictest	371795	-21	kworker/u4:1+events_unbound	22:40:03	0
298196	99	65	50,12	cyclictest	0	-21	swapper/1	21:30:14	1
298194	99	65	57,6	cyclictest	322622	-21	kworker/u4:11+events_unbound	21:07:00	0
298194	99	65	57,6	cyclictest	322622	-21	kworker/u4:11+events_unbound	21:07:00	0
298194	99	62	50,6	cyclictest	500467	-21	kworker/u4:8+events_unbound	00:25:02	0
298194	99	60	51,7	cyclictest	402725	-21	kworker/u4:17+events_unbound	22:52:23	0
298196	99	59	51,5	cyclictest	27	1	ktimers/1	23:56:48	1
298194	99	58	50,5	cyclictest	467323	-21	diskmemload	23:45:18	0
298194	99	58	46,6	cyclictest	298131	-21	kworker/u4:11+events_unbound	19:17:01	0
298194	99	58	46,6	cyclictest	298131	-21	kworker/u4:11+events_unbound	19:17:00	0
298196	99	57	43,7	cyclictest	316108	-21	kworker/u4:18+events_unbound	20:23:45	1
298194	99	57	50,5	cyclictest	401053	-21	/usr/sbin/munin	22:30:21	0
298196	99	56	50,4	cyclictest	27	1	ktimers/1	21:41:54	1
298196	99	56	48,6	cyclictest	370143	-21	/usr/sbin/munin	21:55:27	1
298194	99	56	48,5	cyclictest	472136	-21	ssh	23:50:29	0
298196	99	55	46,6	cyclictest	447095	-21	kworker/u4:10+events_unbound	23:52:23	1
298196	99	55	42,6	cyclictest	300683	-21	kworker/u4:12+events_unbound	20:32:17	1
298196	99	55	41,7	cyclictest	311009	-21	kworker/u4:13+events_unbound	20:26:49	1
298196	99	55	33,16	cyclictest	498700	-21	ntpq	00:20:27	1
298194	99	55	46,5	cyclictest	0	-21	swapper/0	21:50:24	0
298196	99	54	47,4	cyclictest	0	-21	swapper/1	22:42:21	1
298196	99	54	46,5	cyclictest	0	-21	swapper/1	21:35:35	1
298194	99	54	47,5	cyclictest	309737	-21	kworker/u4:4+events_unbound	20:08:16	0
298194	99	54	45,6	cyclictest	348133	-21	ssh	21:30:36	0
298196	99	53	46,5	cyclictest	318785	-21	kworker/u4:9+events_unbound	20:55:03	1
298194	99	53	46,5	cyclictest	317509	-21	kworker/u4:0+events_unbound	21:03:46	0
298194	99	53	44,6	cyclictest	0	-21	swapper/0	00:30:33	0
298194	99	53	42,8	cyclictest	391631	-21	ssh	22:20:13	0
298194	99	53	28,17	cyclictest	53	-21	kswapd0	23:55:12	0
298194	99	53	18,10	cyclictest	14	-21	ksoftirqd/0	23:40:26	0
298196	99	52	44,6	cyclictest	338022	-21	sendmail	21:20:00	1
298196	99	52	44,5	cyclictest	494798	-21	unixbench_multi	00:15:41	1
298196	99	52	41,8	cyclictest	462571	-21	cut	23:40:13	1
298194	99	52	44,5	cyclictest	298193	-21	cyclictest	22:25:51	0
298194	99	52	42,7	cyclictest	0	-21	swapper/0	23:15:11	0
298194	99	52	42,7	cyclictest	0	-21	swapper/0	23:15:11	0
298194	99	52	10,27	cyclictest	15	1	ktimers/0	21:40:01	0
298196	99	51	43,5	cyclictest	467510	-21	/usr/sbin/munin	23:45:21	1
298196	99	51	43,5	cyclictest	426780	-21	ssh	23:00:00	1
298196	99	51	43,5	cyclictest	0	-21	swapper/1	22:05:17	1
298196	99	51	42,7	cyclictest	305887	-21	systemd	19:36:42	1
298196	99	51	40,8	cyclictest	444984	-21	basename	23:20:18	1
298196	99	51	40,8	cyclictest	444984	-21	basename	23:20:17	1
298196	99	51	38,11	cyclictest	0	-21	swapper/1	21:25:34	1
298196	99	51	36,10	cyclictest	0	-21	swapper/1	20:55:00	1
298194	99	51	44,5	cyclictest	380822	-21	kworker/u4:0+events_unbound	22:20:02	0
298196	99	50	43,5	cyclictest	288274	-21	kworker/u4:10+events_unbound	19:48:36	1
298196	99	50	42,5	cyclictest	400962	-21	gltestperf	22:30:19	1
298196	99	50	36,6	cyclictest	500467	-21	kworker/u4:8+events_unbound	00:32:25	1
298194	99	50	43,5	cyclictest	374247	-21	fschecks_count	22:00:19	0
298194	99	50	43,5	cyclictest	313797	-21	aten2__	20:10:14	0
298194	99	50	43,5	cyclictest	294311	-21	kworker/u4:1+events_unbound	19:10:02	0
298194	99	50	42,6	cyclictest	53	-21	kswapd0	21:25:19	0
298194	99	50	41,7	cyclictest	502165	-21	latency_hist	00:25:01	0
298196	99	49	42,5	cyclictest	0	-21	swapper/1	20:40:28	1
298196	99	49	40,6	cyclictest	299756	-21	/usr/sbin/munin	19:15:17	1
298196	99	49	40,6	cyclictest	299756	-21	/usr/sbin/munin	19:15:17	1
298196	99	49	37,10	cyclictest	440512	-21	aten_r7power_po	23:15:16	1
298196	99	49	37,10	cyclictest	440512	-21	aten_r7power_po	23:15:16	1
298196	99	49	34,11	cyclictest	0	-21	swapper/1	21:50:14	1
298194	99	49	4,41	cyclictest	338988	-21	ssh	21:20:26	0
298194	99	49	42,5	cyclictest	294313	-21	kworker/u4:3+events_unbound	19:43:46	0
298194	99	49	40,6	cyclictest	0	-21	swapper/0	22:12:14	0
298194	99	49	36,10	cyclictest	458194	-21	aten_r7power_cu	23:35:17	0
298196	99	48	41,5	cyclictest	458172	-21	aten2__	23:35:16	1
298196	99	48	40,6	cyclictest	392041	-21	/usr/sbin/munin	22:20:22	1
298194	99	48	40,6	cyclictest	422989	-21	fschecks_count	22:55:21	0
298194	99	48	40,6	cyclictest	379536	-21	unixbench-2d	22:05:41	0
298194	99	48	40,5	cyclictest	438077	-21	ssh	23:11:52	0
298194	99	48	28,18	cyclictest	308729	-21	aten_r7power_en	19:50:16	0
298196	99	47	40,5	cyclictest	342519	-21	latency_hist	21:25:01	1
298196	99	47	39,5	cyclictest	449557	-21	/usr/sbin/munin	23:25:19	1
298196	99	47	38,6	cyclictest	0	-21	swapper/1	22:35:38	1
298196	99	47	36,9	cyclictest	503727	-21	ssh	00:25:43	1
298196	99	47	36,8	cyclictest	398202	-21	ssh	22:26:56	1
298196	99	47	15,17	cyclictest	0	-21	swapper/1	23:30:24	1
298194	99	47	40,5	cyclictest	515328	-21	sh	00:40:01	0
298194	99	47	39,6	cyclictest	318102	-21	gltestperf	20:25:20	0
298194	99	47	38,7	cyclictest	490123	-21	/usr/sbin/munin	00:10:39	0
298194	99	47	38,6	cyclictest	370791	-21	unixbench_singl	21:55:43	0
298194	99	47	36,5	cyclictest	358322	-21	kworker/u4:5+events_unbound	21:49:45	0
298194	99	47	34,6	cyclictest	425239	-21	kworker/u4:6+events_unbound	23:06:16	0
298196	99	46	40,4	cyclictest	431797	-21	df_abs	23:05:17	1
298196	99	46	40,4	cyclictest	327721	-21	systemd	21:01:59	1
298196	99	46	40,4	cyclictest	312844	-21	fschecks_time	20:05:19	1
298196	99	46	29,6	cyclictest	17	1	rcu_preempt	00:37:47	1
298196	99	46	23,20	cyclictest	27	1	ktimers/1	21:49:45	1
298196	99	46	13,18	cyclictest	0	-21	swapper/1	23:00:36	1
298194	99	46	39,5	cyclictest	322622	-21	kworker/u4:11+events_unbound	20:49:46	0
298194	99	46	39,5	cyclictest	312033	-21	switchtime	20:00:36	0
298194	99	46	37,7	cyclictest	356691	-21	gltestperf	21:40:19	0
298194	99	46	35,9	cyclictest	53	-21	kswapd0	23:30:05	0
298196	99	45	38,5	cyclictest	436124	-21	wget	23:10:17	1
298196	99	45	37,5	cyclictest	0	-21	swapper/1	00:10:13	1
298196	99	45	36,7	cyclictest	400	-21	systemd-logind	22:17:15	1
298196	99	45	36,6	cyclictest	310276	-21	fschecks_time	19:55:21	1
298196	99	45	34,8	cyclictest	422316	-21	cron	22:55:01	1
298196	99	45	34,8	cyclictest	0	-21	swapper/1	00:00:31	1
298196	99	45	33,6	cyclictest	318782	-21	kworker/u4:5+events_unbound	20:37:15	1
298194	99	45	32,10	cyclictest	53	-21	kswapd0	23:00:08	0
298194	99	45	29,8	cyclictest	447095	-21	kworker/u4:10-rpciod	23:23:54	0
298194	99	45	29,8	cyclictest	447095	-21	kworker/u4:10-rpciod	23:23:54	0
298194	99	45	18,15	cyclictest	407179	-21	kworker/u4:7+rpciod	22:50:00	0
298196	99	44	37,4	cyclictest	484865	-21	aten_r7power_vo	00:05:17	1
298196	99	44	36,6	cyclictest	333589	-21	latency_hist	21:15:02	1
298196	99	44	35,6	cyclictest	304650	-21	kworker/u4:11	19:35:00	1
298196	99	44	13,16	cyclictest	26	1	rcuc/1	20:00:11	1
298194	99	44	38,4	cyclictest	298193	-21	cyclictest	00:01:11	0
298194	99	44	35,7	cyclictest	485040	-21	cut	00:05:20	0
298194	99	44	34,8	cyclictest	325742	-21	gltestperf	20:55:20	0
298194	99	44	33,5	cyclictest	288274	-21	kworker/u4:10+events_unbound	19:49:09	0
298196	99	43	37,4	cyclictest	299449	-21	sh	19:15:00	1
298196	99	43	35,5	cyclictest	0	-21	swapper/1	22:00:26	1
298196	99	43	18,13	cyclictest	27	1	ktimers/1	22:45:15	1
298194	99	43	35,6	cyclictest	315333	-21	fschecks_time	20:15:20	0
298196	99	42	21,18	cyclictest	27	1	ktimers/1	19:44:47	1
298194	99	42	33,7	cyclictest	309977	-21	aten_r7power_cu	19:55:17	0
298196	99	40	33,4	cyclictest	324018	-21	latency_hist	20:50:01	1
298196	99	40	32,6	cyclictest	303028	-21	switchtime	19:25:38	1
298196	99	40	30,6	cyclictest	0	-21	swapper/1	19:20:27	1
298196	99	39	32,5	cyclictest	327948	-21	aten2__	21:05:15	1
298196	99	39	32,5	cyclictest	327948	-21	aten2__	21:05:14	1
298196	99	39	29,6	cyclictest	0	-21	swapper/1	19:50:20	1
298194	99	35	26,6	cyclictest	0	-21	swapper/0	19:10:02	0
298196	99	31	24,5	cyclictest	298204	-21	grep	19:10:00	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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