OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

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 Thu Jun 04, 2026 12:44:09)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
252772	99	113	103,7	cyclictest	251494	-21	kworker/u4:6+events_unbound	07:30:00	1
252770	99	101	93,6	cyclictest	373564	-21	kworker/u4:15+events_unbound	11:25:58	0
252770	99	78	70,6	cyclictest	271989	-21	kworker/u4:4+events_unbound	09:05:03	0
252772	99	77	71,4	cyclictest	251494	-21	kworker/u4:6+events_unbound	07:10:01	1
252772	99	77	71,4	cyclictest	251494	-21	kworker/u4:6+events_unbound	07:10:01	1
252772	99	76	63,10	cyclictest	27	1	ktimers/1	11:56:59	1
252770	99	74	45,25	cyclictest	53	-21	kswapd0	12:30:08	0
252772	99	73	66,5	cyclictest	259113	-21	kworker/u4:8+events_unbound	08:00:19	1
252772	99	73	60,9	cyclictest	37	-21	kcompactd0	12:32:23	1
252772	99	70	63,5	cyclictest	253996	-21	kworker/u4:9+events_unbound	07:20:00	1
252772	99	68	60,6	cyclictest	334447	-21	kworker/u4:13+events_unbound	10:15:00	1
252770	99	63	40,20	cyclictest	415440	-21	grep	11:40:39	0
252772	99	61	55,4	cyclictest	27	1	ktimers/1	11:01:50	1
252772	99	61	52,5	cyclictest	0	-21	swapper/1	11:40:35	1
252772	99	61	50,8	cyclictest	250255	-21	kworker/u4:3+events_unbound	08:35:26	1
252770	99	60	53,5	cyclictest	256572	-21	kworker/u4:12+events_unbound	07:30:02	0
252770	99	60	52,5	cyclictest	321186	-21	kworker/u4:8+events_unbound	09:55:16	0
252772	99	59	52,5	cyclictest	261765	-21	kworker/u4:0+events_unbound	07:50:02	1
252772	99	58	46,9	cyclictest	283506	-21	diskmemload	09:32:55	1
252770	99	58	51,5	cyclictest	416492	-21	kworker/u4:12+events_unbound	11:47:45	0
252770	99	58	51,5	cyclictest	250255	-21	kworker/u4:3+events_unbound	08:25:02	0
252770	99	58	51,4	cyclictest	0	-21	swapper/0	11:05:39	0
252772	99	57	46,9	cyclictest	53	-21	kswapd0	11:10:01	1
252772	99	57	40,11	cyclictest	263053	-21	modprobe	07:50:00	1
252770	99	57	43,10	cyclictest	353600	-21	dpkg	10:30:12	0
252770	99	57	38,17	cyclictest	333081	-21	unixbench_multi	10:05:39	0
252772	99	56	44,8	cyclictest	440276	-21	latency_hist	12:10:01	1
252770	99	56	49,5	cyclictest	253996	-21	kworker/u4:9+events_unbound	08:40:03	0
252770	99	56	46,8	cyclictest	277885	-21	systemd	08:45:28	0
252772	99	55	48,5	cyclictest	443001	-21	kworker/u4:11+events_unbound	12:13:45	1
252772	99	55	48,5	cyclictest	297635	-21	ld	09:25:26	1
252772	99	55	45,6	cyclictest	0	-21	swapper/1	12:35:23	1
252772	99	55	42,6	cyclictest	250255	-21	kworker/u4:3+events_unbound	07:58:01	1
252770	99	55	48,5	cyclictest	376752	-21	sshd	10:55:50	0
252770	99	55	48,5	cyclictest	293579	-21	mailstats	09:20:38	0
252770	99	55	48,5	cyclictest	251493	-21	kworker/u4:5+events_unbound	08:15:02	0
252770	99	55	47,6	cyclictest	389079	-21	/usr/sbin/munin	11:10:32	0
252770	99	55	44,7	cyclictest	266887	-21	modprobe	08:05:00	0
252772	99	54	43,8	cyclictest	270311	-21	ps	08:15:34	1
252772	99	54	41,8	cyclictest	272005	-21	modprobe	08:25:00	1
252770	99	54	47,5	cyclictest	255274	-21	kworker/u4:10+events_unbound	08:20:02	0
252770	99	54	46,6	cyclictest	311260	-21	/usr/sbin/munin	09:40:39	0
252772	99	53	47,4	cyclictest	314236	-21	sed	09:45:02	1
252772	99	53	46,5	cyclictest	369200	-21	kworker/u4:2+events_unbound	10:50:49	1
252772	99	53	45,5	cyclictest	0	-21	swapper/1	11:10:36	1
252772	99	53	41,9	cyclictest	277992	-21	ps	08:45:35	1
252772	99	53	40,6	cyclictest	253995	-21	kworker/u4:8+events_unbound	07:14:04	1
252772	99	53	39,6	cyclictest	268143	-21	kworker/u4:16+events_unbound	09:03:03	1
252770	99	53	46,5	cyclictest	301019	-21	munin-plugin-st	09:30:00	0
252770	99	53	46,5	cyclictest	261765	-21	kworker/u4:0+events_unbound	08:13:00	0
252770	99	53	44,6	cyclictest	409950	-21	latency_hist	11:35:02	0
252770	99	53	43,5	cyclictest	312318	-21	kworker/u4:1+events_unbound	10:19:45	0
252770	99	53	39,10	cyclictest	445619	-21	ntpq	12:15:26	0
252772	99	52	45,5	cyclictest	402232	-21	sh	11:25:31	1
252772	99	52	44,5	cyclictest	410619	-21	ssh	11:35:21	1
252772	99	52	42,7	cyclictest	332318	-21	gltestperf	10:05:20	1
252772	99	52	42,7	cyclictest	278747	-21	df	08:50:16	1
252770	99	52	46,4	cyclictest	312322	-21	kworker/u4:11+events_unbound	10:35:02	0
252770	99	52	45,5	cyclictest	393728	-21	mailstats	11:15:39	0
252770	99	52	44,6	cyclictest	261765	-21	kworker/u4:0+events_unbound	07:43:59	0
252770	99	52	43,7	cyclictest	316749	-21	kworker/u4:2-rpciod	09:50:01	0
252770	99	52	28,22	cyclictest	0	-21	swapper/0	10:50:38	0
252770	99	51	43,5	cyclictest	327870	-21	fschecks_count	10:00:21	0
252770	99	51	41,7	cyclictest	453359	-21	ssh	12:24:59	0
252772	99	50	43,5	cyclictest	418955	-21	aten_r7power_po	11:45:16	1
252772	99	50	43,5	cyclictest	345248	-21	grep	10:20:18	1
252772	99	50	42,5	cyclictest	267351	-21	fschecks_count	08:05:20	1
252772	99	50	40,6	cyclictest	0	-21	swapper/1	09:20:11	1
252770	99	50	44,4	cyclictest	0	-21	swapper/0	11:50:59	0
252770	99	50	39,9	cyclictest	264508	-21	aten2__	07:55:14	0
252770	99	50	32,16	cyclictest	438580	-21	kworker/u4:2-rpciod	12:07:18	0
252772	99	49	42,5	cyclictest	358315	-21	basename	10:35:18	1
252772	99	49	40,6	cyclictest	0	-21	swapper/1	11:20:13	1
252772	99	49	39,8	cyclictest	324488	-21	vmstat	09:55:41	1
252770	99	49	42,5	cyclictest	395017	-21	kworker/u4:0+events_unbound	11:20:54	0
252770	99	49	39,6	cyclictest	0	-21	swapper/0	10:25:28	0
252772	99	48	42,4	cyclictest	252769	-21	cyclictest	11:30:57	1
252772	99	48	41,5	cyclictest	349380	-21	cut	10:25:17	1
252772	99	48	40,6	cyclictest	340	-21	systemd-udevd	09:37:44	1
252772	99	48	40,5	cyclictest	280017	-21	sed	08:55:15	1
252772	99	48	35,6	cyclictest	425342	-21	kworker/u4:18+events_unbound	11:53:14	1
252770	99	48	44,2	cyclictest	299015	-21	kworker/u4:6+events_unbound	09:30:39	0
252770	99	48	41,5	cyclictest	362373	-21	aten2__	10:40:15	0
252770	99	48	41,5	cyclictest	284688	-21	sh	09:10:36	0
252770	99	48	41,5	cyclictest	261766	-21	kworker/u4:1+events_unbound	08:50:04	0
252770	99	48	41,5	cyclictest	253211	-21	fschecks_time	07:10:19	0
252770	99	48	38,7	cyclictest	37	-21	kcompactd0	11:00:10	0
252770	99	48	37,9	cyclictest	262088	-21	aten_r7power_vo	07:45:16	0
252770	99	48	18,10	cyclictest	275275	-21	sd-accept	08:35:25	0
252772	99	47	39,5	cyclictest	273764	-21	fschecks_time	08:30:18	1
252772	99	47	39,5	cyclictest	0	-21	swapper/1	12:20:32	1
252772	99	47	39,5	cyclictest	0	-21	swapper/1	10:15:30	1
252772	99	47	37,8	cyclictest	288022	-21	latency_hist	09:15:02	1
252770	99	47	40,5	cyclictest	410099	-21	acpi	11:35:09	0
252770	99	47	40,5	cyclictest	319072	-21	/usr/sbin/munin	09:50:18	0
252770	99	47	39,6	cyclictest	280116	-21	fschecks_time	08:55:17	0
252770	99	47	39,6	cyclictest	275800	-21	kworker/u4:14+events_unbound	09:01:00	0
252770	99	47	39,6	cyclictest	256962	-21	df_abs	07:25:17	0
252770	99	47	38,7	cyclictest	345369	-21	gltestperf	10:20:19	0
252770	99	47	35,9	cyclictest	267510	-21	if_err_eth0	08:05:20	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


Access: public		Short link to this page
This page was last modified on 2019-05-28 - 00:17