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 100 highest latencies:

System rack7slot2.osadl.org (updated Tue Dec 16, 2025 12:44:16)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
815160	99	115	99,6	cyclictest	821590	-21	kworker/u4:17+events_unbound	08:24:14	1
815160	99	93	86,5	cyclictest	870892	-21	kworker/u4:13+events_unbound	09:44:28	1
815159	99	92	85,5	cyclictest	897266	-21	kworker/u4:6+events_unbound	10:19:39	0
815160	99	90	82,6	cyclictest	830616	-21	kworker/u4:7+events_unbound	08:34:15	1
815160	99	90	76,6	cyclictest	816380	-21	kworker/u4:8+events_unbound	07:19:04	1
815159	99	90	82,6	cyclictest	387039	-21	kworker/u4:3+events_unbound	07:39:06	0
815160	99	88	81,5	cyclictest	820318	-21	kworker/u4:12+events_unbound	07:54:09	1
815160	99	87	81,4	cyclictest	897266	-21	kworker/u4:6+events_unbound	11:04:46	1
815159	99	86	79,5	cyclictest	820318	-21	kworker/u4:12+events_unbound	09:04:20	0
815160	99	83	76,5	cyclictest	813876	-21	kworker/u4:0+events_unbound	07:24:04	1
815159	99	82	74,6	cyclictest	825510	-21	kworker/u4:10+events_unbound	07:59:09	0
815159	99	82	74,6	cyclictest	825510	-21	kworker/u4:10+events_unbound	07:59:08	0
815159	99	79	71,6	cyclictest	820317	-21	kworker/u4:11+events_unbound	08:04:10	0
815160	99	75	68,5	cyclictest	830615	-21	kworker/u4:6+events_unbound	08:54:18	1
815159	99	74	66,6	cyclictest	816380	-21	kworker/u4:8+events_unbound	08:35:01	0
815159	99	72	67,3	cyclictest	952325	-21	kworker/u4:4+events_unbound	11:34:52	0
815159	99	68	58,8	cyclictest	920293	-21	kworker/u4:10+events_unbound	10:50:03	0
815160	99	63	56,5	cyclictest	53	-21	kswapd0	11:15:01	1
815160	99	63	50,5	cyclictest	952325	-21	kworker/u4:4+events_unbound	11:28:44	1
815160	99	61	54,5	cyclictest	964365	-21	kworker/u4:6+events_unbound	11:45:02	1
815160	99	61	47,6	cyclictest	820318	-21	kworker/u4:12+events_unbound	07:40:44	1
815160	99	61	42,9	cyclictest	27	1	ktimers/1	11:56:49	1
815160	99	61	42,9	cyclictest	27	1	ktimers/1	11:56:49	1
815159	99	61	52,7	cyclictest	991443	-21	kworker/u4:1+events_unbound	12:40:01	0
815159	99	61	45,13	cyclictest	981308	-21	latency_hist	12:05:01	0
815159	99	60	53,5	cyclictest	916863	-21	kworker/u4:9+events_unbound	11:05:02	0
815159	99	60	52,6	cyclictest	987456	-21	kworker/u4:8+events_unbound	12:24:57	0
815160	99	58	44,6	cyclictest	916861	-21	kworker/u4:7+events_unbound	10:50:59	1
815160	99	57	48,7	cyclictest	53	-21	kswapd0	10:30:12	1
815159	99	57	50,5	cyclictest	830615	-21	kworker/u4:6+events_unbound	09:05:02	0
815159	99	57	50,5	cyclictest	813876	-21	kworker/u4:0+events_unbound	08:10:02	0
815159	99	57	49,5	cyclictest	863762	-21	kworker/u4:1+events_unbound	09:40:02	0
815159	99	56	46,7	cyclictest	959234	-21	unixbench-2d	11:35:41	0
815159	99	56	45,5	cyclictest	840839	-21	kworker/u4:13+events_unbound	08:53:03	0
815160	99	55	46,6	cyclictest	857710	-21	aten2__	09:25:17	1
815160	99	55	46,6	cyclictest	0	-21	swapper/1	10:10:13	1
815160	99	55	44,7	cyclictest	882164	-21	kworker/u4:2-rpciod	10:01:08	1
815160	99	54	47,5	cyclictest	820317	-21	kworker/u4:11+events_unbound	07:28:00	1
815159	99	54	47,5	cyclictest	820317	-21	kworker/u4:11+events_unbound	07:42:43	0
815159	99	54	41,10	cyclictest	982591	-21	timerandwakeup	12:05:40	0
815160	99	53	40,6	cyclictest	816383	-21	kworker/u4:11+events_unbound	07:13:02	1
815160	99	53	40,6	cyclictest	816380	-21	kworker/u4:8+events_unbound	08:57:44	1
815159	99	53	49,3	cyclictest	948355	-21	kworker/u4:8+events_unbound	11:24:50	0
815159	99	53	49,3	cyclictest	948355	-21	kworker/u4:8+events_unbound	11:24:49	0
815160	99	52	45,5	cyclictest	862153	-21	/usr/sbin/munin	09:30:28	1
815159	99	52	43,7	cyclictest	926845	-21	/usr/sbin/munin	10:55:19	0
815159	99	52	35,15	cyclictest	0	-21	swapper/0	11:25:35	0
815159	99	52	33,5	cyclictest	17	1	rcu_preempt	11:04:59	0
815160	99	51	40,8	cyclictest	829735	-21	df	08:05:16	1
815160	99	51	39,9	cyclictest	0	-21	swapper/1	12:00:39	1
815159	99	51	32,17	cyclictest	872471	-21	latency_hist	09:45:02	0
815160	99	50	45,3	cyclictest	916861	-21	kworker/u4:7+events_unbound	10:44:44	1
815160	99	50	45,3	cyclictest	916861	-21	kworker/u4:7+events_unbound	10:44:43	1
815159	99	50	42,6	cyclictest	1000562	-21	ssh	12:29:59	0
815160	99	49	42,5	cyclictest	855022	-21	/usr/sbin/munin	09:20:41	1
815160	99	49	42,5	cyclictest	850290	-21	diskmemload	09:15:18	1
815160	99	49	39,8	cyclictest	947449	-21	grep	11:20:41	1
815160	99	49	39,8	cyclictest	947449	-21	grep	11:20:41	1
815160	99	49	39,8	cyclictest	902963	-21	aten2__	10:25:17	1
815160	99	49	38,9	cyclictest	970226	-21	fschecks_time	11:50:22	1
815160	99	49	38,8	cyclictest	53	-21	kswapd0	11:05:15	1
815160	99	49	36,6	cyclictest	820316	-21	kworker/u4:9+events_unbound	07:45:45	1
815160	99	49	35,6	cyclictest	831886	-21	kworker/u4:13+events_unbound	08:15:00	1
815159	99	49	42,5	cyclictest	986540	-21	sed	12:10:40	0
815159	99	49	41,6	cyclictest	879977	-21	latency_hist	09:55:02	0
815159	99	49	39,8	cyclictest	832170	-21	aten_r7power_en	08:15:17	0
815159	99	49	38,8	cyclictest	0	-21	swapper/0	09:20:27	0
815160	99	48	41,5	cyclictest	992920	-21	sendmail	12:20:00	1
815160	99	48	32,9	cyclictest	820314	-21	kworker/u4:5+events_unbound	08:18:10	1
815159	99	48	41,5	cyclictest	899863	-21	/usr/sbin/munin	10:20:38	0
815159	99	48	41,5	cyclictest	880910	-21	ntp_offset	09:55:32	0
815159	99	48	40,6	cyclictest	861251	-21	latency_hist	09:30:01	0
815160	99	47	41,4	cyclictest	927355	-21	ntp_offset	10:55:33	1
815160	99	47	40,5	cyclictest	997727	-21	ld	12:25:28	1
815160	99	47	40,5	cyclictest	830615	-21	kworker/u4:6+events_unbound	09:08:01	1
815160	99	47	40,5	cyclictest	822948	-21	dpkg	07:40:02	1
815160	99	47	40,5	cyclictest	815089	-21	kworker/u4:6+events_unbound	07:32:04	1
815160	99	47	37,8	cyclictest	846701	-21	gltestperf	09:10:23	1
815160	99	47	37,7	cyclictest	0	-21	swapper/1	12:35:00	1
815160	99	47	35,10	cyclictest	828232	-21	latency_hist	08:00:02	1
815160	99	47	35,10	cyclictest	828232	-21	latency_hist	08:00:02	1
815160	99	47	33,12	cyclictest	910810	-21	aten_r7power_en	10:35:18	1
815160	99	47	33,12	cyclictest	910810	-21	aten_r7power_en	10:35:18	1
815159	99	47	40,5	cyclictest	847281	-21	grep	09:10:41	0
815159	99	47	40,5	cyclictest	830616	-21	kworker/u4:7+events_unbound	08:09:59	0
815159	99	47	40,5	cyclictest	1001380	-21	sed	12:30:21	0
815159	99	47	39,6	cyclictest	53	-21	kswapd0	11:15:01	0
815159	99	47	38,7	cyclictest	903042	-21	aten_r7power_en	10:25:17	0
815159	99	47	37,8	cyclictest	888186	-21	/usr/sbin/munin	10:05:25	0
815159	99	47	36,5	cyclictest	17	1	rcu_preempt	10:34:40	0
815159	99	47	29,16	cyclictest	946031	-21	latency_hist	11:20:02	0
815160	99	46	40,4	cyclictest	851669	-21	kworker/u4:5+events_unbound	09:38:58	1
815160	99	46	39,5	cyclictest	985626	-21	df_abs	12:10:17	1
815160	99	46	39,5	cyclictest	1004779	-21	aten2__	12:35:13	1
815160	99	46	38,6	cyclictest	966123	-21	cut	11:45:16	1
815160	99	46	38,6	cyclictest	899040	-21	aten_r7power_en	10:20:17	1
815160	99	46	37,7	cyclictest	993583	-21	fschecks_time	12:20:17	1
815160	99	46	37,7	cyclictest	880312	-21	cpu	09:55:18	1
815160	99	46	36,8	cyclictest	887940	-21	tune2fs	10:05:22	1
815160	99	46	32,6	cyclictest	838274	-21	kworker/u4:18+events_unbound	08:40:08	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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