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 Mon Apr 20, 2026 00:44:08)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
633326	99	92	84,5	cyclictest	655179	-21	sshd	20:32:01	0
633326	99	84	73,6	cyclictest	706438	-21	kworker/u4:4+events_unbound	22:00:00	0
633326	99	84	67,4	cyclictest	715341	-21	kworker/u4:7+events_unbound	22:12:07	0
633326	99	79	71,6	cyclictest	666619	-21	kworker/u4:0+events_unbound	21:22:03	0
633326	99	77	67,7	cyclictest	706439	-21	kworker/u4:5+events_unbound	22:57:15	0
633328	99	76	69,5	cyclictest	763645	-21	kworker/u4:2+events_unbound	23:07:16	1
633326	99	74	66,6	cyclictest	706439	-21	kworker/u4:5+events_unbound	22:42:12	0
633326	99	74	66,6	cyclictest	706439	-21	kworker/u4:5+events_unbound	22:42:12	0
633326	99	74	66,6	cyclictest	706436	-21	kworker/u4:2+events_unbound	22:07:06	0
633326	99	73	66,5	cyclictest	657748	-21	kworker/u4:11+events_unbound	20:55:02	0
633328	99	71	63,5	cyclictest	759178	-21	kworker/u4:0+events_unbound	23:20:00	1
633326	99	70	62,6	cyclictest	680223	-21	kworker/u4:6+events_unbound	21:32:03	0
633328	99	68	60,6	cyclictest	768062	-21	kworker/u4:13+events_unbound	23:12:17	1
633328	99	67	59,6	cyclictest	637213	-21	kworker/u4:9+events_unbound	20:06:58	1
633326	99	66	59,5	cyclictest	657750	-21	kworker/u4:13+events_unbound	21:17:02	0
633326	99	66	41,8	cyclictest	740385	-21	switchtime	22:35:38	0
633326	99	66	41,8	cyclictest	740385	-21	switchtime	22:35:38	0
633328	99	64	59,3	cyclictest	648788	-21	kworker/u4:15+events_unbound	20:11:58	1
633328	99	64	2,50	cyclictest	788198	-21	ssh	23:30:29	1
633328	99	63	56,5	cyclictest	666619	-21	kworker/u4:0+events_unbound	21:15:01	1
633326	99	62	53,6	cyclictest	809432	-21	aten_r7power_vo	23:55:16	0
633326	99	61	39,17	cyclictest	640015	-21	/usr/sbin/munin	19:35:10	0
633328	99	60	51,7	cyclictest	638483	-21	kworker/u4:12+events_unbound	19:46:57	1
633328	99	60	50,7	cyclictest	757133	-21	fschecks_count	22:55:19	1
633328	99	59	51,5	cyclictest	646214	-21	kworker/u4:7+events_unbound	20:32:01	1
633328	99	59	49,7	cyclictest	772482	-21	kworker/u4:4+events_unbound	23:22:19	1
633326	99	59	50,6	cyclictest	666622	-21	kworker/u4:3+events_unbound	21:12:03	0
633326	99	59	46,5	cyclictest	701981	-21	kworker/u4:8+events_unbound	21:52:03	0
633328	99	58	50,6	cyclictest	671173	-21	kworker/u4:9+events_unbound	21:57:04	1
633328	99	58	50,6	cyclictest	662860	-21	systemd	21:02:01	1
633328	99	58	32,17	cyclictest	0	-21	swapper/1	22:40:28	1
633328	99	58	32,17	cyclictest	0	-21	swapper/1	22:40:28	1
633328	99	57	48,7	cyclictest	763531	-21	sd-accept	23:02:15	1
633328	99	57	47,8	cyclictest	637205	-21	systemd	19:21:52	1
633326	99	57	34,20	cyclictest	804647	-21	latency_hist	23:50:01	0
633328	99	56	49,5	cyclictest	723600	-21	kworker/u4:3+events_unbound	22:21:59	1
633328	99	56	47,7	cyclictest	745861	-21	kworker/u4:1+events_unbound	22:47:13	1
633328	99	56	47,6	cyclictest	462	-21	systemd	19:58:23	1
633326	99	56	49,5	cyclictest	749663	-21	kworker/u4:7+events_unbound	22:52:14	0
633326	99	56	49,5	cyclictest	656445	-21	kworker/u4:2+events_unbound	21:00:01	0
633326	99	56	38,12	cyclictest	37	-21	kcompactd0	22:28:19	0
633326	99	56	31,23	cyclictest	848256	-21	cron	00:40:00	0
633328	99	55	47,6	cyclictest	842263	-21	kworker/u4:8+events_unbound	00:33:32	1
633326	99	55	49,4	cyclictest	0	-21	swapper/0	23:20:27	0
633326	99	55	47,5	cyclictest	833357	-21	kworker/u4:0+events_unbound	00:23:26	0
633326	99	55	37,14	cyclictest	691183	-21	munin-node	21:40:11	0
633328	99	54	45,7	cyclictest	642407	-21	kworker/u4:3-rpciod	19:41:55	1
633328	99	54	40,12	cyclictest	688591	-21	ssh	21:36:30	1
633326	99	54	42,7	cyclictest	0	-21	swapper/0	22:30:27	0
633326	99	54	37,11	cyclictest	648812	-21	modprobe	20:10:00	0
633328	99	53	46,5	cyclictest	783597	-21	/usr/sbin/munin	23:25:21	1
633328	99	53	46,4	cyclictest	0	-21	swapper/1	22:26:58	1
633326	99	53	46,5	cyclictest	785192	-21	kworker/u4:5+events_unbound	23:37:59	0
633326	99	53	45,6	cyclictest	759179	-21	kworker/u4:1+events_unbound	23:18:41	0
633326	99	53	43,7	cyclictest	378	-21	dbus-daemon	22:47:12	0
633326	99	53	42,8	cyclictest	727557	-21	/usr/sbin/munin	22:20:43	0
633326	99	53	36,5	cyclictest	787770	-21	fschecks_count	23:30:19	0
633328	99	52	45,5	cyclictest	811204	-21	kworker/u4:0+events_unbound	00:02:00	1
633328	99	52	44,5	cyclictest	817684	-21	apt-get	00:05:09	1
633326	99	52	45,5	cyclictest	656450	-21	kworker/u4:8+events_unbound	21:07:02	0
633326	99	52	28,17	cyclictest	766127	-21	if_eth0	23:05:22	0
633328	99	51	42,6	cyclictest	0	-21	swapper/1	23:35:12	1
633326	99	51	43,6	cyclictest	828919	-21	kworker/u4:12+events_unbound	00:18:59	0
633326	99	51	40,8	cyclictest	644067	-21	df	19:50:17	0
633326	99	51	34,14	cyclictest	0	-21	swapper/0	00:05:11	0
633328	99	50	42,6	cyclictest	789633	-21	kworker/u4:9+events_unbound	23:52:14	1
633328	99	50	39,8	cyclictest	315	-21	systemd-journal	21:32:02	1
633328	99	50	39,5	cyclictest	0	-21	swapper/1	22:35:12	1
633328	99	50	39,5	cyclictest	0	-21	swapper/1	22:35:12	1
633326	99	50	40,7	cyclictest	706435	-21	kworker/u4:0+events_unbound	22:05:01	0
633326	99	50	37,11	cyclictest	256	50	irq/23-42890000.ethernet	19:20:11	0
633328	99	49	41,6	cyclictest	820054	-21	kworker/u4:6+events_unbound	00:28:29	1
633328	99	49	41,5	cyclictest	653149	-21	fschecks_time	20:25:20	1
633328	99	49	36,9	cyclictest	0	-21	swapper/1	22:05:29	1
633326	99	49	41,6	cyclictest	657748	-21	kworker/u4:11+events_unbound	20:42:01	0
633326	99	49	41,5	cyclictest	800305	-21	latency_hist	23:45:01	0
633326	99	49	26,20	cyclictest	645172	-21	cut	19:55:17	0
633326	99	49	23,20	cyclictest	770658	-21	ntpq	23:10:28	0
633328	99	48	5,34	cyclictest	640034	-21	dpkg	19:35:13	1
633328	99	48	41,5	cyclictest	722309	-21	/usr/sbin/munin	22:15:21	1
633328	99	48	41,5	cyclictest	669473	-21	/usr/sbin/munin	21:15:21	1
633328	99	48	40,4	cyclictest	647541	-21	kworker/u4:2	20:05:00	1
633328	99	48	39,6	cyclictest	794080	-21	kworker/u4:12+events_unbound	23:46:52	1
633326	99	48	41,5	cyclictest	820056	-21	kworker/u4:13+events_unbound	00:10:59	0
633326	99	48	40,6	cyclictest	648788	-21	kworker/u4:15+events_unbound	20:27:01	0
633326	99	48	39,6	cyclictest	678710	-21	ntpq	21:25:34	0
633326	99	48	37,8	cyclictest	646715	-21	cut	20:00:19	0
633326	99	48	36,9	cyclictest	634585	-21	munin-run	19:15:00	0
633326	99	48	36,9	cyclictest	634585	-21	munin-run	19:15:00	0
633326	99	48	35,10	cyclictest	761744	-21	if_eth0	23:00:22	0
633326	99	48	29,15	cyclictest	0	-21	swapper/0	22:15:33	0
633328	99	47	5,35	cyclictest	735913	-21	ssh	22:30:38	1
633328	99	47	40,5	cyclictest	675721	-21	kworker/u4:11+events_unbound	21:23:00	1
633328	99	47	39,6	cyclictest	837805	-21	kworker/u4:5+events_unbound	00:38:34	1
633328	99	47	39,5	cyclictest	691656	-21	fschecks_time	21:40:29	1
633328	99	47	39,5	cyclictest	656992	-21	fschecks_time	20:40:19	1
633326	99	47	40,5	cyclictest	802974	-21	kworker/u4:1+events_unbound	23:50:41	0
633326	99	47	40,5	cyclictest	785190	-21	kworker/u4:1+events_unbound	23:27:19	0
633326	99	47	36,8	cyclictest	639894	-21	cat	19:35:02	0
633326	99	47	33,11	cyclictest	835887	-21	gltestperf	00:25:25	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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