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 Fri Jan 16, 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
416745	99	115	98,8	cyclictest	479983	-21	kworker/u4:2+events_unbound	21:57:32	1
416745	99	104	97,5	cyclictest	603569	-21	kworker/u4:2+events_unbound	00:13:00	1
416745	99	104	97,5	cyclictest	603569	-21	kworker/u4:2+events_unbound	00:12:59	1
416744	99	97	89,6	cyclictest	531287	-21	kworker/u4:11+events_unbound	23:02:46	0
416745	99	88	80,6	cyclictest	440707	-21	kworker/u4:12+events_unbound	20:52:22	1
416745	99	86	78,6	cyclictest	535596	-21	kworker/u4:9+events_unbound	23:12:47	1
416745	99	83	76,5	cyclictest	425550	-21	kworker/u4:13+events_unbound	19:52:15	1
416745	99	83	76,5	cyclictest	419218	-21	kworker/u4:6+events_unbound	19:47:14	1
416745	99	80	72,6	cyclictest	535593	-21	kworker/u4:4+events_unbound	23:07:45	1
416744	99	79	70,6	cyclictest	569560	-21	kworker/u4:2+events_unbound	23:37:50	0
416745	99	77	70,5	cyclictest	439422	-21	kworker/u4:0+events_unbound	20:37:20	1
416745	99	75	68,5	cyclictest	419219	-21	kworker/u4:7+events_unbound	19:22:11	1
416744	99	74	67,5	cyclictest	612310	-21	kworker/u4:1+events_unbound	00:28:03	0
416745	99	72	62,6	cyclictest	431852	-21	kworker/u4:3+events_unbound	20:12:15	1
416745	99	71	63,6	cyclictest	439424	-21	kworker/u4:5+events_unbound	20:57:23	1
416745	99	69	60,5	cyclictest	442049	-21	kworker/u4:14+events_unbound	21:02:22	1
416745	99	68	52,6	cyclictest	565255	-21	kworker/u4:10+events_unbound	23:45:02	1
416745	99	68	50,6	cyclictest	518247	-21	kworker/u4:0+events_unbound	22:33:44	1
416744	99	68	60,6	cyclictest	560941	-21	kworker/u4:3+events_unbound	23:32:52	0
416744	99	68	51,5	cyclictest	582540	-21	kworker/u4:11+events_unbound	00:02:58	0
416745	99	67	60,5	cyclictest	479983	-21	kworker/u4:2+events_unbound	21:52:31	1
416745	99	66	54,7	cyclictest	0	-21	swapper/1	21:15:11	1
416745	99	66	50,6	cyclictest	475627	-21	kworker/u4:9+events_unbound	21:46:43	1
416744	99	66	51,9	cyclictest	565255	-21	kworker/u4:10-rpciod	23:49:22	0
416744	99	65	47,10	cyclictest	0	-21	swapper/0	23:10:11	0
416744	99	64	53,8	cyclictest	586228	-21	kworker/u4:14+events_unbound	23:51:59	0
416745	99	63	56,5	cyclictest	425552	-21	kworker/u4:14+events_unbound	20:17:00	1
416745	99	63	55,6	cyclictest	421760	-21	kworker/u4:9+events_unbound	20:07:15	1
416744	99	63	55,6	cyclictest	582540	-21	kworker/u4:11+events_unbound	23:57:56	0
416744	99	63	55,6	cyclictest	425553	-21	kworker/u4:15+events_unbound	20:02:15	0
416745	99	62	32,24	cyclictest	27	1	ktimers/1	00:15:27	1
416745	99	60	53,5	cyclictest	526931	-21	kworker/u4:6+events_unbound	22:42:40	1
416744	99	60	53,5	cyclictest	479983	-21	kworker/u4:2+events_unbound	22:02:35	0
416744	99	59	51,5	cyclictest	440707	-21	kworker/u4:12+events_unbound	21:13:59	0
416744	99	59	50,7	cyclictest	423017	-21	systemd	19:32:12	0
416745	99	58	50,6	cyclictest	616638	-21	kworker/u4:6+events_unbound	00:31:59	1
416745	99	58	43,6	cyclictest	624694	-21	kworker/u4:4+events_unbound	00:37:01	1
416745	99	57	44,8	cyclictest	37	-21	kcompactd0	23:26:39	1
416744	99	57	50,5	cyclictest	421755	-21	kworker/u4:1+events_unbound	19:37:14	0
416744	99	57	49,5	cyclictest	616638	-21	kworker/u4:6+events_unbound	00:38:04	0
416745	99	56	49,5	cyclictest	560941	-21	kworker/u4:3+events_unbound	23:33:00	1
416745	99	56	49,5	cyclictest	492924	-21	kworker/u4:3+events_unbound	22:05:00	1
416745	99	56	48,6	cyclictest	599270	-21	kworker/u4:10+events_unbound	00:09:44	1
416745	99	56	48,6	cyclictest	599270	-21	kworker/u4:10+events_unbound	00:09:44	1
416745	99	56	48,6	cyclictest	454150	-21	kworker/u4:1+events_unbound	21:30:03	1
416744	99	56	47,7	cyclictest	314	-21	systemd-journal	00:12:59	0
416744	99	56	47,7	cyclictest	314	-21	systemd-journal	00:12:59	0
416744	99	56	35,17	cyclictest	0	-21	swapper/0	00:30:32	0
416745	99	55	48,5	cyclictest	435656	-21	kworker/u4:6+events_unbound	20:22:18	1
416745	99	55	47,5	cyclictest	499156	-21	apt-get	22:10:12	1
416744	99	55	48,5	cyclictest	563462	-21	fschecks_time	23:25:21	0
416744	99	55	47,6	cyclictest	495417	-21	gltestperf	22:05:22	0
416745	99	54	46,6	cyclictest	607939	-21	kworker/u4:12+events_unbound	00:21:00	1
416745	99	54	46,6	cyclictest	565255	-21	kworker/u4:10+events_unbound	23:43:00	1
416744	99	54	46,6	cyclictest	501567	-21	kworker/u4:12+events_unbound	22:20:03	0
416744	99	54	46,6	cyclictest	479983	-21	kworker/u4:2-rpciod	22:10:16	0
416744	99	54	45,7	cyclictest	438607	-21	fschecks_count	20:35:18	0
416744	99	54	36,6	cyclictest	518247	-21	kworker/u4:0+events_unbound	22:32:39	0
416745	99	53	47,4	cyclictest	423015	-21	kworker/u4:11+events_unbound	19:37:00	1
416745	99	53	45,6	cyclictest	531287	-21	kworker/u4:11-rpciod	22:50:20	1
416744	99	53	46,5	cyclictest	531285	-21	kworker/u4:10+events_unbound	22:49:01	0
416745	99	52	46,5	cyclictest	565251	-21	kworker/u4:0+events_unbound	23:37:00	1
416745	99	52	46,5	cyclictest	439425	-21	kworker/u4:6+events_unbound	21:15:02	1
416744	99	52	40,8	cyclictest	0	-21	swapper/0	21:45:43	0
416744	99	52	39,11	cyclictest	525233	-21	if_eth0	22:40:21	0
416745	99	51	46,4	cyclictest	535594	-21	kworker/u4:5+events_unbound	23:01:59	1
416745	99	51	46,4	cyclictest	479983	-21	kworker/u4:2+events_unbound	22:26:59	1
416745	99	51	45,4	cyclictest	513940	-21	kworker/u4:5+events_unbound	22:37:00	1
416745	99	51	44,5	cyclictest	461746	-21	timerwakeupswit	21:25:39	1
416745	99	51	38,7	cyclictest	0	-21	swapper/1	22:20:27	1
416745	99	50	42,6	cyclictest	420501	-21	kworker/u4:10+events_unbound	19:25:01	1
416745	99	50	42,5	cyclictest	0	-21	swapper/1	23:50:34	1
416745	99	50	39,8	cyclictest	532997	-21	latency_hist	22:50:01	1
416744	99	50	43,5	cyclictest	546439	-21	fschecks_time	23:05:20	0
416744	99	50	42,6	cyclictest	603570	-21	kworker/u4:3+events_unbound	00:23:02	0
416744	99	50	42,6	cyclictest	388	-21	dbus-daemon	23:42:51	0
416744	99	50	29,19	cyclictest	439974	-21	fschecks_time	20:40:20	0
416745	99	49	42,5	cyclictest	418872	-21	sendmail_mailqu	19:15:33	1
416744	99	49	42,5	cyclictest	538446	-21	/usr/sbin/munin	22:55:36	0
416745	99	48	41,5	cyclictest	612310	-21	kworker/u4:1+events_unbound	00:29:24	1
416745	99	48	41,5	cyclictest	423049	-21	sh	19:35:01	1
416745	99	48	40,6	cyclictest	470214	-21	proc_pri	21:35:36	1
416744	99	48	41,5	cyclictest	446451	-21	fschecks_time	21:05:17	0
416744	99	48	40,6	cyclictest	535593	-21	kworker/u4:4+events_unbound	22:54:11	0
416744	99	48	40,6	cyclictest	473444	-21	latency_hist	21:40:02	0
416744	99	48	40,6	cyclictest	421758	-21	kworker/u4:5+events_unbound	19:42:14	0
416744	99	48	39,7	cyclictest	474809	-21	/usr/sbin/munin	21:40:37	0
416744	99	48	25,20	cyclictest	0	-21	swapper/0	22:35:32	0
416745	99	47	40,5	cyclictest	582540	-21	kworker/u4:11+events_unbound	00:04:58	1
416745	99	47	37,7	cyclictest	0	-21	swapper/1	20:30:37	1
416744	99	47	39,6	cyclictest	435655	-21	kworker/u4:4+events_unbound	20:32:19	0
416744	99	47	39,6	cyclictest	434708	-21	aten_r7power_po	20:20:16	0
416744	99	47	38,7	cyclictest	606704	-21	mailstats	00:15:35	0
416744	99	47	30,15	cyclictest	562816	-21	latency_hist	23:25:01	0
416745	99	46	38,6	cyclictest	421755	-21	kworker/u4:1+events_unbound	19:42:00	1
416745	99	46	34,7	cyclictest	0	-21	swapper/1	20:05:01	1
416745	99	46	28,7	cyclictest	500944	-21	kworker/u4:10+events_unbound	22:16:58	1
416745	99	46	28,6	cyclictest	475625	-21	kworker/u4:6+events_unbound	21:43:11	1
416745	99	46	27,6	cyclictest	560941	-21	kworker/u4:3+events_unbound	23:22:33	1
416744	99	46	37,7	cyclictest	460369	-21	latency_hist	21:25:02	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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