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 Apr 17, 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
768873	99	105	89,6	cyclictest	926158	-21	kworker/u4:3+events_unbound	23:52:31	1
768873	99	103	94,7	cyclictest	795750	-21	kworker/u4:8+events_unbound	21:02:11	1
768870	99	101	4,31	cyclictest	831892	-21	ssh	21:45:25	0
768873	99	95	87,6	cyclictest	789372	-21	kworker/u4:18+events_unbound	21:07:12	1
768873	99	89	81,5	cyclictest	771383	-21	kworker/u4:11+events_unbound	20:02:00	1
768873	99	83	76,5	cyclictest	770100	-21	kworker/u4:6+events_unbound	19:35:03	1
768873	99	83	75,6	cyclictest	790643	-21	kworker/u4:0+events_unbound	20:52:10	1
768873	99	83	75,6	cyclictest	771381	-21	kworker/u4:9+events_unbound	19:57:01	1
768873	99	82	74,6	cyclictest	788103	-21	kworker/u4:17+events_unbound	20:27:04	1
768870	99	82	62,6	cyclictest	899414	-21	kworker/u4:9+events_unbound	23:49:59	0
768873	99	80	72,5	cyclictest	815546	-21	kworker/u4:7+events_unbound	21:35:00	1
768870	99	80	4,28	cyclictest	977502	-21	/usr/sbin/munin	00:30:37	0
768873	99	79	72,5	cyclictest	770101	-21	kworker/u4:7+events_unbound	19:47:00	1
768873	99	79	71,6	cyclictest	917324	-21	kworker/u4:2+events_unbound	23:27:29	1
768870	99	79	40,36	cyclictest	919742	-21	tune2fs	23:25:20	0
768870	99	78	42,34	cyclictest	854444	-21	unixbench-2d	22:10:41	0
768870	99	78	42,33	cyclictest	875010	-21	grep	22:35:02	0
768873	99	75	68,5	cyclictest	868723	-21	kworker/u4:5+events_unbound	22:52:25	1
768873	99	75	68,5	cyclictest	868720	-21	kworker/u4:1+events_unbound	22:45:00	1
768873	99	75	68,5	cyclictest	771382	-21	kworker/u4:10+events_unbound	20:17:00	1
768870	99	75	57,14	cyclictest	256	50	irq/23-42890000.ethernet	23:20:37	0
768873	99	74	67,5	cyclictest	960824	-21	kworker/u4:7+events_unbound	00:22:45	1
768873	99	74	56,14	cyclictest	0	-21	swapper/1	21:10:28	1
768870	99	74	66,6	cyclictest	873143	-21	kworker/u4:3+events_unbound	22:47:26	0
768870	99	72	68,3	cyclictest	770101	-21	kworker/u4:7+events_unbound	20:07:01	0
768870	99	72	64,5	cyclictest	767602	-21	kworker/u4:8+events_unbound	20:17:05	0
768870	99	72	38,6	cyclictest	814562	-21	sendmail_mailqu	21:25:42	0
768873	99	70	57,5	cyclictest	767602	-21	kworker/u4:8+events_unbound	19:26:58	1
768870	99	70	61,6	cyclictest	770101	-21	kworker/u4:7+events_unbound	19:52:00	0
768873	99	69	62,5	cyclictest	771383	-21	kworker/u4:11+events_unbound	19:41:57	1
768870	99	69	37,6	cyclictest	973408	-21	timerandwakeup	00:25:42	0
768870	99	69	22,18	cyclictest	0	-21	swapper/0	00:05:20	0
768870	99	68	34,9	cyclictest	37	-21	kcompactd0	00:10:35	0
768873	99	67	59,6	cyclictest	786780	-21	kworker/u4:4+events_unbound	20:37:06	1
768870	99	65	33,23	cyclictest	256	50	irq/23-42890000.ethernet	19:55:09	0
768873	99	62	55,5	cyclictest	786802	-21	kworker/u4:15+events_unbound	20:47:09	1
768870	99	62	52,4	cyclictest	0	-21	swapper/0	19:25:10	0
768873	99	61	43,6	cyclictest	873144	-21	kworker/u4:6+events_unbound	23:03:00	1
768873	99	60	47,5	cyclictest	771382	-21	kworker/u4:10+events_unbound	20:57:10	1
768873	99	60	46,6	cyclictest	767599	-21	kworker/u4:5+events_unbound	19:31:57	1
768873	99	60	44,6	cyclictest	838005	-21	kworker/u4:9+events_unbound	21:55:20	1
768873	99	60	44,6	cyclictest	838005	-21	kworker/u4:9+events_unbound	21:55:19	1
768873	99	58	50,6	cyclictest	766362	-21	kworker/u4:2+events_unbound	19:16:56	1
768873	99	58	43,8	cyclictest	908329	-21	kworker/u4:3+events_unbound	23:16:01	1
768873	99	58	43,8	cyclictest	908329	-21	kworker/u4:3+events_unbound	23:16:00	1
768873	99	58	42,8	cyclictest	899415	-21	kworker/u4:11+events_unbound	23:05:21	1
768873	99	58	42,14	cyclictest	768868	-21	cyclictest	22:30:20	1
768870	99	58	53,3	cyclictest	771382	-21	kworker/u4:10+events_unbound	20:42:07	0
768870	99	58	50,5	cyclictest	829047	-21	kworker/u4:6+events_unbound	21:52:20	0
768870	99	58	47,7	cyclictest	256	50	irq/23-42890000.ethernet	21:20:39	0
768873	99	57	50,5	cyclictest	961470	-21	kworker/u4:11+events_unbound	00:17:01	1
768873	99	57	50,5	cyclictest	924775	-21	ssh	23:30:53	1
768873	99	57	49,6	cyclictest	903863	-21	kworker/u4:13+events_unbound	23:10:21	1
768873	99	57	49,4	cyclictest	0	-21	swapper/1	21:25:16	1
768870	99	57	49,5	cyclictest	248	50	irq/20-imx-lcdifv3-crtc.0	21:35:00	0
768870	99	57	38,16	cyclictest	524	-21	in:imuxsock	21:37:18	0
768873	99	56	48,6	cyclictest	912827	-21	kworker/u4:8+events_unbound	23:35:03	1
768873	99	56	43,6	cyclictest	781680	-21	kworker/u4:1+events_unbound	20:08:22	1
768873	99	56	39,5	cyclictest	912827	-21	kworker/u4:8+events_unbound	23:46:00	1
768873	99	56	38,6	cyclictest	926158	-21	kworker/u4:3+events_unbound	00:11:08	1
768870	99	56	47,7	cyclictest	315	-21	systemd-journal	00:02:41	0
768870	99	56	2,20	cyclictest	37	-21	kcompactd0	00:39:57	0
768873	99	55	48,5	cyclictest	868722	-21	kworker/u4:4+events_unbound	23:20:05	1
768873	99	55	42,6	cyclictest	824525	-21	kworker/u4:4+events_unbound	21:38:58	1
768870	99	55	31,21	cyclictest	928521	-21	fschecks_time	23:35:23	0
768873	99	54	47,5	cyclictest	854434	-21	grep	22:10:41	1
768873	99	54	47,5	cyclictest	767598	-21	kworker/u4:0+events_unbound	19:21:57	1
768873	99	54	46,6	cyclictest	845497	-21	/usr/sbin/munin	22:00:38	1
768873	99	54	44,6	cyclictest	810403	-21	/usr/sbin/munin	21:20:42	1
768870	99	54	39,10	cyclictest	967692	-21	ssh	00:20:02	0
768870	99	54	33,18	cyclictest	933819	-21	unixbench_multi	23:40:42	0
768873	99	53	46,5	cyclictest	831593	-21	fschecks_time	21:45:19	1
768873	99	53	43,7	cyclictest	785355	-21	timerwakeupswit	20:10:34	1
768873	99	53	42,8	cyclictest	0	-21	swapper/1	20:30:35	1
768873	99	53	42,4	cyclictest	970459	-21	kworker/u4:10+events_unbound	00:29:00	1
768870	99	53	46,5	cyclictest	799673	-21	kworker/u4:1+events_unbound	21:17:13	0
768873	99	52	8,28	cyclictest	885078	-21	ssh	22:45:37	1
768873	99	52	39,9	cyclictest	980568	-21	sh	00:35:01	1
768873	99	52	32,7	cyclictest	961470	-21	kworker/u4:11+events_unbound	00:38:42	1
768873	99	51	43,5	cyclictest	951517	-21	unixbench_singl	00:00:39	1
768873	99	51	35,7	cyclictest	846952	-21	kworker/u4:18+events_unbound	22:09:01	1
768870	99	51	11,29	cyclictest	768868	-21	cyclictest	19:10:00	0
768873	99	50	43,5	cyclictest	946088	-21	ssh	23:55:21	1
768873	99	50	43,5	cyclictest	873141	-21	kworker/u4:0+events_unbound	22:35:03	1
768873	99	50	42,6	cyclictest	771381	-21	kworker/u4:9+events_unbound	20:20:22	1
768870	99	50	42,5	cyclictest	53	-21	kswapd0	23:10:00	0
768870	99	50	33,5	cyclictest	0	-21	swapper/0	22:20:01	0
768873	99	49	40,6	cyclictest	833523	-21	kworker/u4:5-xprtiod	22:15:30	1
768870	99	49	42,5	cyclictest	795794	-21	grep	20:55:02	0
768870	99	49	41,6	cyclictest	771382	-21	kworker/u4:10+events_unbound	20:12:03	0
768870	99	49	38,7	cyclictest	833522	-21	kworker/u4:3+events_unbound	21:57:20	0
768870	99	49	38,7	cyclictest	833522	-21	kworker/u4:3+events_unbound	21:57:20	0
768870	99	49	29,18	cyclictest	0	-21	swapper/0	22:00:27	0
768873	99	48	42,5	cyclictest	868723	-21	kworker/u4:5+events_unbound	22:57:59	1
768873	99	48	40,6	cyclictest	930637	-21	kworker/u4:11+events_unbound	23:40:58	1
768873	99	48	40,6	cyclictest	829049	-21	kworker/u4:8+events_unbound	21:51:41	1
768870	99	48	40,6	cyclictest	771383	-21	kworker/u4:11+events_unbound	20:22:05	0
768870	99	48	40,5	cyclictest	848897	-21	aten_r7power_cu	22:05:16	0
768870	99	48	38,7	cyclictest	790842	-21	aten2__	20:35:17	0
768870	99	48	25,20	cyclictest	256	50	irq/23-42890000.ethernet	21:05:09	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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