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 May 27, 2026 12:44:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2140855	99	108	99,6	cyclictest	2240453	-21	kworker/u4:0+events_unbound	10:34:40	0
2140856	99	103	96,5	cyclictest	2092494	-21	kworker/u4:3+events_unbound	07:24:01	1
2140856	99	103	88,6	cyclictest	2142075	-21	kworker/u4:4+events_unbound	07:19:00	1
2140855	99	103	94,6	cyclictest	2236003	-21	kworker/u4:4+events_unbound	10:29:41	0
2140856	99	96	88,6	cyclictest	2151122	-21	kworker/u4:10+events_unbound	08:15:01	1
2140856	99	93	80,6	cyclictest	2310331	-21	kworker/u4:2+events_unbound	11:49:54	1
2140856	99	88	81,5	cyclictest	2143359	-21	kworker/u4:8+events_unbound	08:39:15	1
2140855	99	86	79,5	cyclictest	2275519	-21	kworker/u4:9+events_unbound	11:24:50	0
2140855	99	86	30,30	cyclictest	2140831	-21	munin-run	07:10:01	0
2140856	99	83	70,6	cyclictest	2132179	-21	kworker/u4:14+events_unbound	07:45:02	1
2140856	99	81	67,6	cyclictest	2151122	-21	kworker/u4:10+events_unbound	08:24:14	1
2140856	99	79	71,6	cyclictest	2196598	-21	kworker/u4:7+events_unbound	09:59:33	1
2140856	99	76	69,5	cyclictest	2171634	-21	kworker/u4:7+events_unbound	09:09:23	1
2140856	99	75	67,6	cyclictest	2147283	-21	kworker/u4:4+events_unbound	07:49:07	1
2140856	99	75	67,6	cyclictest	1923123	-21	kworker/u4:9+events_unbound	07:29:02	1
2140856	99	73	65,6	cyclictest	2192100	-21	kworker/u4:11+events_unbound	10:09:37	1
2140856	99	73	52,7	cyclictest	2192096	-21	kworker/u4:6+events_unbound	09:34:25	1
2140855	99	72	64,6	cyclictest	2283778	-21	kworker/u4:2+events_unbound	11:19:50	0
2140855	99	72	54,7	cyclictest	2209884	-21	kworker/u4:0+events_unbound	09:54:59	0
2140856	99	71	65,4	cyclictest	2143359	-21	kworker/u4:8+events_unbound	08:30:02	1
2140856	99	71	54,6	cyclictest	2196598	-21	kworker/u4:7+events_unbound	09:40:16	1
2140856	99	71	51,15	cyclictest	2282950	-21	sh	11:15:36	1
2140855	99	69	55,5	cyclictest	2222620	-21	kworker/u4:6+events_unbound	10:54:44	0
2140855	99	69	53,12	cyclictest	2291700	-21	ntpq	11:25:35	0
2140856	99	66	59,5	cyclictest	2163875	-21	kworker/u4:2+events_unbound	08:44:17	1
2140855	99	66	59,5	cyclictest	2253785	-21	kworker/u4:4+events_unbound	10:44:43	0
2140856	99	64	57,5	cyclictest	2132177	-21	kworker/u4:7+events_unbound	07:54:06	1
2140856	99	64	56,6	cyclictest	2139576	-21	kworker/u4:1+events_unbound	07:34:04	1
2140855	99	64	46,15	cyclictest	2173125	-21	timerandwakeup	09:10:39	0
2140856	99	63	56,5	cyclictest	2169069	-21	kworker/u4:0+events_unbound	08:59:21	1
2140855	99	62	43,4	cyclictest	2323592	-21	kworker/u4:2+events_unbound	12:03:59	0
2140855	99	62	43,4	cyclictest	2323592	-21	kworker/u4:2+events_unbound	12:03:58	0
2140856	99	61	54,5	cyclictest	2152389	-21	kworker/u4:11+events_unbound	08:04:09	1
2140856	99	61	47,8	cyclictest	2196596	-21	kworker/u4:0-rpciod	09:38:54	1
2140855	99	61	54,5	cyclictest	2327978	-21	kworker/u4:6+events_unbound	12:20:01	0
2140855	99	61	52,7	cyclictest	2305917	-21	kworker/u4:0+events_unbound	11:44:53	0
2140855	99	61	52,7	cyclictest	2305917	-21	kworker/u4:0+events_unbound	11:44:53	0
2140855	99	61	44,5	cyclictest	2192093	-21	kworker/u4:1+events_unbound	09:45:03	0
2140855	99	60	54,4	cyclictest	53	-21	kswapd0	09:40:01	0
2140855	99	60	2,53	cyclictest	37	-21	kcompactd0	10:35:36	0
2140856	99	58	50,5	cyclictest	2167797	-21	kworker/u4:11+events_unbound	09:04:22	1
2140855	99	58	50,6	cyclictest	2192100	-21	kworker/u4:11+events_unbound	10:24:39	0
2140855	99	57	49,6	cyclictest	2327978	-21	kworker/u4:6+events_unbound	12:25:02	0
2140855	99	57	49,6	cyclictest	2257621	-21	kworker/u4:8+events_unbound	10:47:00	0
2140856	99	56	50,4	cyclictest	2170364	-21	kworker/u4:4+events_unbound	09:16:00	1
2140856	99	56	47,6	cyclictest	2269347	-21	gltestperf	11:00:19	1
2140855	99	56	49,5	cyclictest	2142075	-21	kworker/u4:4+events_unbound	07:14:00	0
2140855	99	56	42,9	cyclictest	2339671	-21	timerwakeupswit	12:20:38	0
2140856	99	55	48,5	cyclictest	2192093	-21	kworker/u4:1+events_unbound	09:50:00	1
2140856	99	55	47,6	cyclictest	2249312	-21	kworker/u4:7+events_unbound	11:35:01	1
2140856	99	55	46,7	cyclictest	2262087	-21	kworker/u4:10+events_unbound	11:10:12	1
2140856	99	55	41,10	cyclictest	2323592	-21	kworker/u4:2+events_unbound	12:05:10	1
2140856	99	55	2,41	cyclictest	2339247	-21	ssh	12:20:29	1
2140855	99	55	49,4	cyclictest	15	1	ktimers/0	12:37:08	0
2140856	99	54	5,35	cyclictest	2207381	-21	ssh	09:50:06	1
2140856	99	54	37,13	cyclictest	53	-21	kswapd0	12:00:31	1
2140856	99	54	37,13	cyclictest	53	-21	kswapd0	12:00:31	1
2140855	99	54	46,6	cyclictest	2225611	-21	/usr/sbin/munin	10:10:26	0
2140856	99	53	43,5	cyclictest	0	-21	swapper/1	10:10:14	1
2140856	99	53	41,4	cyclictest	2236003	-21	kworker/u4:4+events_unbound	10:23:45	1
2140856	99	53	35,6	cyclictest	2349412	-21	kworker/u4:16+events_unbound	12:38:20	1
2140855	99	53	47,4	cyclictest	2297859	-21	kworker/u4:11+events_unbound	11:34:53	0
2140855	99	53	46,5	cyclictest	2313738	-21	unixbench_singl	11:50:39	0
2140855	99	53	44,7	cyclictest	2196596	-21	kworker/u4:0+events_unbound	09:44:33	0
2140856	99	52	45,5	cyclictest	2262088	-21	kworker/u4:12+events_unbound	10:53:46	1
2140856	99	52	44,5	cyclictest	2171676	-21	diskmemload	10:35:31	1
2140856	99	52	43,6	cyclictest	2338214	-21	sendmail	12:20:00	1
2140856	99	52	42,7	cyclictest	2142082	-21	systemd	07:13:59	1
2140856	99	52	41,8	cyclictest	2251727	-21	gltestperf	10:40:24	1
2140856	99	52	35,5	cyclictest	2192100	-21	kworker/u4:11+events_unbound	10:17:01	1
2140855	99	52	42,7	cyclictest	2157494	-21	kworker/u4:17+events_unbound	09:10:00	0
2140855	99	52	34,16	cyclictest	2330793	-21	grep	12:10:36	0
2140855	99	52	34,16	cyclictest	2330793	-21	grep	12:10:35	0
2140856	99	51	38,6	cyclictest	2205451	-21	kworker/u4:12+events_unbound	10:03:00	1
2140856	99	51	38,6	cyclictest	2205451	-21	kworker/u4:12+events_unbound	10:03:00	1
2140856	99	51	37,8	cyclictest	0	-21	swapper/1	12:10:34	1
2140856	99	51	37,8	cyclictest	0	-21	swapper/1	12:10:33	1
2140855	99	51	5,9	cyclictest	2164167	-21	/usr/sbin/munin	08:40:11	0
2140855	99	51	44,5	cyclictest	2187560	-21	kworker/u4:0+events_unbound	09:31:59	0
2140855	99	51	4,40	cyclictest	2273167	-21	apt-get	11:05:08	0
2140855	99	51	39,8	cyclictest	2148552	-21	kworker/u4:13+events_unbound	08:10:01	0
2140855	99	51	37,10	cyclictest	2181659	-21	ntpq	09:20:27	0
2140856	99	50	42,6	cyclictest	2157494	-21	kworker/u4:17+events_unbound	09:25:02	1
2140856	99	50	42,6	cyclictest	2151122	-21	kworker/u4:10+events_unbound	08:26:01	1
2140856	99	50	38,9	cyclictest	2317902	-21	find	11:55:37	1
2140855	99	50	41,7	cyclictest	0	-21	swapper/0	11:45:11	0
2140855	99	50	38,6	cyclictest	0	-21	swapper/0	08:04:59	0
2140856	99	49	41,6	cyclictest	2238916	-21	ld	10:25:33	1
2140856	99	49	37,7	cyclictest	2323592	-21	kworker/u4:2-xprtiod	12:25:31	1
2140855	99	49	40,6	cyclictest	0	-21	swapper/0	12:05:33	0
2140855	99	49	28,18	cyclictest	0	-21	swapper/0	12:30:19	0
2140856	99	48	41,5	cyclictest	2268516	-21	sh	10:59:59	1
2140856	99	48	37,6	cyclictest	2151122	-21	kworker/u4:10-rpciod	08:45:39	1
2140855	99	48	39,6	cyclictest	2220929	-21	gltestperf	10:05:19	0
2140855	99	48	27,18	cyclictest	0	-21	swapper/0	11:00:02	0
2140856	99	47	40,5	cyclictest	2273406	-21	df_abs	11:05:14	1
2140856	99	47	37,7	cyclictest	2173149	-21	timerwakeupswit	09:10:38	1
2140855	99	47	38,7	cyclictest	2147673	-21	sed	07:35:17	0
2140855	99	47	35,6	cyclictest	2213079	-21	users	09:55:42	0
2140856	99	46	39,5	cyclictest	2140852	-21	cyclictest	09:20:30	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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