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 Wed Dec 17, 2025 00:44:15)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1537357	99	131	114,13	cyclictest	53	-21	kswapd0	20:45:09	0
1537357	99	115	93,17	cyclictest	53	-21	kswapd0	23:40:10	0
1537358	99	111	103,5	cyclictest	1559143	-21	kworker/u4:18+events_unbound	21:41:12	1
1537358	99	106	97,6	cyclictest	1550180	-21	kworker/u4:5+events_unbound	20:05:57	1
1537358	99	101	90,8	cyclictest	1673309	-21	kworker/u4:11+events_unbound	23:31:34	1
1537358	99	101	90,8	cyclictest	1673309	-21	kworker/u4:11+events_unbound	23:31:34	1
1537358	99	92	84,6	cyclictest	1551475	-21	kworker/u4:9+events_unbound	20:36:02	1
1537358	99	92	66,8	cyclictest	1665319	-21	kworker/u4:1+events_unbound	23:21:08	1
1537358	99	91	83,5	cyclictest	1621916	-21	kworker/u4:12+events_unbound	22:26:22	1
1537357	99	84	3,33	cyclictest	1589495	-21	sh	21:35:38	0
1537358	99	83	75,6	cyclictest	1280815	-21	kworker/u4:7+events_unbound	19:30:52	1
1537357	99	83	58,18	cyclictest	53	-21	kswapd0	21:40:07	0
1537357	99	83	34,46	cyclictest	0	-21	swapper/0	00:15:10	0
1537358	99	82	74,6	cyclictest	1700742	-21	kworker/u4:5+events_unbound	00:11:43	1
1537358	99	79	72,5	cyclictest	1538591	-21	kworker/u4:13+events_unbound	19:55:55	1
1537358	99	78	66,9	cyclictest	0	-21	swapper/1	21:10:31	1
1537357	99	78	54,20	cyclictest	53	-21	kswapd0	00:25:07	0
1537357	99	77	68,6	cyclictest	1665321	-21	kworker/u4:4+events_unbound	23:17:04	0
1537357	99	77	66,9	cyclictest	1669281	-21	kworker/u4:3+events_unbound	23:35:12	0
1537358	99	76	71,3	cyclictest	1552750	-21	kworker/u4:0+events_unbound	20:10:57	1
1537357	99	76	64,6	cyclictest	1704722	-21	kworker/u4:3+events_unbound	00:06:41	0
1537357	99	75	67,6	cyclictest	1551475	-21	kworker/u4:9+events_unbound	20:41:02	0
1537358	99	74	67,5	cyclictest	1281117	-21	kworker/u4:9+events_unbound	19:30:00	1
1537358	99	73	65,6	cyclictest	1665321	-21	kworker/u4:4+events_unbound	23:16:31	1
1537357	99	73	2,21	cyclictest	1627913	-21	apt-get	22:25:15	0
1537358	99	72	65,5	cyclictest	1669281	-21	kworker/u4:3+events_unbound	23:50:01	1
1537358	99	72	64,6	cyclictest	1700742	-21	kworker/u4:5+events_unbound	00:01:41	1
1537357	99	72	64,6	cyclictest	1610597	-21	kworker/u4:7+events_unbound	22:31:23	0
1537357	99	72	35,34	cyclictest	1569792	-21	timerandwakeup	21:10:40	0
1537357	99	71	62,7	cyclictest	1689367	-21	kworker/u4:13+events_unbound	23:56:40	0
1537357	99	71	4,20	cyclictest	1656308	-21	ssh	23:00:31	0
1537358	99	70	61,5	cyclictest	1538591	-21	kworker/u4:13+events_unbound	20:16:01	1
1537357	99	70	60,7	cyclictest	1693344	-21	kworker/u4:15+events_unbound	23:51:39	0
1537357	99	70	38,24	cyclictest	1548846	-21	apt-get	19:55:05	0
1537357	99	70	32,5	cyclictest	0	-21	swapper/0	21:30:35	0
1537358	99	69	62,5	cyclictest	1704722	-21	kworker/u4:3+events_unbound	00:06:44	1
1537358	99	69	55,8	cyclictest	0	-21	swapper/1	21:30:12	1
1537357	99	69	39,27	cyclictest	1644505	-21	ld	22:45:31	0
1537357	99	69	33,32	cyclictest	1551475	-21	kworker/u4:9-xprtiod	20:35:39	0
1537357	99	69	32,8	cyclictest	256	50	irq/23-42890000.ethernet	22:15:18	0
1537357	99	68	33,32	cyclictest	1563363	-21	aten2__	20:50:16	0
1537357	99	68	23,42	cyclictest	0	-21	swapper/0	21:25:24	0
1537357	99	67	34,30	cyclictest	1700742	-21	kworker/u4:5-rpciod	00:20:34	0
1537357	99	67	32,5	cyclictest	1691492	-21	ssh	23:45:22	0
1537357	99	67	31,33	cyclictest	1538445	-21	unixbench-2d	19:10:37	0
1537358	99	66	59,5	cyclictest	1552752	-21	kworker/u4:2+events_unbound	20:35:01	1
1537358	99	66	50,5	cyclictest	1552754	-21	kworker/u4:4+events_unbound	20:30:01	1
1537357	99	66	33,4	cyclictest	1627026	-21	sh	22:23:52	0
1537357	99	66	33,4	cyclictest	1627026	-21	sh	22:23:52	0
1537357	99	66	33,29	cyclictest	1700740	-21	kworker/u4:2-nfsiod	00:35:20	0
1537357	99	66	31,6	cyclictest	1567057	-21	dpkg	21:05:01	0
1537357	99	66	31,6	cyclictest	0	-21	swapper/0	22:05:27	0
1537357	99	66	29,5	cyclictest	0	-21	swapper/0	21:45:25	0
1537357	99	66	29,5	cyclictest	0	-21	swapper/0	21:45:25	0
1537357	99	66	28,9	cyclictest	0	-21	swapper/0	20:20:21	0
1537357	99	66	13,21	cyclictest	1672517	-21	unixbench_singl	23:20:40	0
1537358	99	65	59,4	cyclictest	1633965	-21	kworker/u4:8+events_unbound	22:55:13	1
1537358	99	65	58,5	cyclictest	1586535	-21	kworker/u4:15+events_unbound	22:05:00	1
1537357	99	65	30,32	cyclictest	1660479	-21	switchtime	23:05:39	0
1537357	99	65	28,6	cyclictest	0	-21	swapper/0	23:25:19	0
1537358	99	64	58,4	cyclictest	1567004	-21	kworker/u4:4+events_unbound	21:46:13	1
1537358	99	64	58,4	cyclictest	1567004	-21	kworker/u4:4+events_unbound	21:46:13	1
1537358	99	64	52,4	cyclictest	1610595	-21	kworker/u4:2+events_unbound	22:21:21	1
1537358	99	64	52,4	cyclictest	1610595	-21	kworker/u4:2+events_unbound	22:21:21	1
1537357	99	64	30,6	cyclictest	0	-21	swapper/0	00:10:17	0
1537358	99	63	44,16	cyclictest	1632256	-21	fschecks_count	22:30:20	1
1537357	99	63	30,7	cyclictest	1608098	-21	latency_hist	22:00:01	0
1537357	99	63	28,6	cyclictest	0	-21	swapper/0	21:20:35	0
1537357	99	63	27,5	cyclictest	0	-21	swapper/0	19:45:22	0
1537357	99	63	26,8	cyclictest	1542749	-21	aten_r7power_vo	19:30:15	0
1537358	99	62	55,5	cyclictest	1700742	-21	kworker/u4:5+events_unbound	00:20:16	1
1537358	99	62	49,6	cyclictest	1610595	-21	kworker/u4:2+events_unbound	22:06:17	1
1537357	99	62	55,5	cyclictest	1602598	-21	kworker/u4:5+events_unbound	22:15:02	0
1537358	99	61	53,6	cyclictest	1568363	-21	kworker/u4:1+events_unbound	21:21:09	1
1537357	99	61	6,17	cyclictest	1567264	-21	munin-node	21:05:10	0
1537357	99	61	53,6	cyclictest	1555307	-21	kworker/u4:11+events_unbound	20:56:05	0
1537357	99	61	26,5	cyclictest	1553214	-21	fschecks_count	20:10:21	0
1537358	99	60	56,3	cyclictest	1673303	-21	kworker/u4:5+events_unbound	23:25:02	1
1537358	99	60	53,5	cyclictest	1669281	-21	kworker/u4:3+events_unbound	23:40:07	1
1537358	99	60	53,5	cyclictest	1520711	-21	kworker/u4:14+events_unbound	19:25:01	1
1537358	99	60	51,6	cyclictest	1686954	-21	latency_hist	23:40:02	1
1537357	99	60	30,5	cyclictest	1727097	-21	grep	00:30:37	0
1537358	99	59	51,6	cyclictest	1551475	-21	kworker/u4:9+events_unbound	20:05:00	1
1537358	99	58	52,4	cyclictest	1547546	-21	kworker/u4:3+events_unbound	19:50:00	1
1537358	99	58	50,6	cyclictest	1653918	-21	kworker/u4:4+events_unbound	23:01:28	1
1537358	99	58	49,6	cyclictest	1708657	-21	kworker/u4:4+events_unbound	00:36:49	1
1537358	99	58	48,8	cyclictest	53	-21	kswapd0	22:40:00	1
1537358	99	58	48,6	cyclictest	1700742	-21	kworker/u4:5+events_unbound	00:16:43	1
1537357	99	58	6,16	cyclictest	1058	-21	snmpd	22:54:10	0
1537358	99	57	53,2	cyclictest	1533561	-21	kworker/u4:0+events_unbound	19:15:49	1
1537358	99	57	50,5	cyclictest	1633965	-21	kworker/u4:8+events_unbound	22:55:01	1
1537358	99	57	49,6	cyclictest	1559143	-21	kworker/u4:18+events_unbound	21:26:10	1
1537358	99	57	49,5	cyclictest	1557871	-21	kworker/u4:14+events_unbound	20:51:03	1
1537357	99	56	49,5	cyclictest	1645909	-21	kworker/u4:3+events_unbound	22:56:28	0
1537357	99	56	43,11	cyclictest	0	-21	swapper/0	00:00:15	0
1537358	99	55	46,7	cyclictest	372	-21	dbus-daemon	21:51:14	1
1537358	99	55	46,7	cyclictest	372	-21	dbus-daemon	21:51:14	1
1537358	99	54	48,5	cyclictest	1567004	-21	kworker/u4:4+events_unbound	21:56:01	1
1537358	99	54	47,6	cyclictest	1700742	-21	kworker/u4:5+events_unbound	23:59:00	1
1537358	99	54	39,5	cyclictest	1552754	-21	kworker/u4:4+events_unbound	20:45:01	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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