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 Mon Feb 16, 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
2097040	99	94	83,8	cyclictest	2210559	-21	kworker/u4:8+events_unbound	11:10:59	0
2097042	99	76	67,5	cyclictest	2100795	-21	kworker/u4:7+events_unbound	07:25:02	1
2097042	99	75	67,6	cyclictest	2281604	-21	kworker/u4:5+events_unbound	12:16:13	1
2097042	99	72	59,10	cyclictest	2107104	-21	kworker/u4:5+events_unbound	08:05:21	1
2097040	99	70	59,9	cyclictest	2166221	-21	apt-get	09:55:12	0
2097042	99	64	57,5	cyclictest	2134288	-21	kworker/u4:1+events_unbound	09:37:01	1
2097042	99	61	51,8	cyclictest	2159055	-21	systemd	09:45:44	1
2097042	99	59	47,8	cyclictest	37	-21	kcompactd0	09:43:06	1
2097040	99	59	50,7	cyclictest	2158106	-21	tune2fs	09:45:19	0
2097042	99	58	51,5	cyclictest	2119811	-21	kworker/u4:5+events_unbound	09:09:43	1
2097042	99	58	43,5	cyclictest	2119811	-21	kworker/u4:5+events_unbound	08:42:59	1
2097040	99	58	47,9	cyclictest	2118131	-21	systemd	08:30:29	0
2097042	99	57	47,7	cyclictest	2297487	-21	unixbench_multi	12:30:38	1
2097040	99	57	4,44	cyclictest	2248751	-21	sshd	11:33:05	0
2097042	99	56	49,5	cyclictest	2213251	-21	/usr/sbin/munin	10:50:26	1
2097042	99	56	40,13	cyclictest	2288209	-21	fschecks_count	12:20:19	1
2097040	99	55	48,5	cyclictest	2296423	-21	aten_r7power_po	12:30:16	0
2097040	99	55	47,6	cyclictest	410	-21	systemd-logind	10:45:56	0
2097040	99	55	47,6	cyclictest	2150364	-21	unixbench-2d	09:35:40	0
2097040	99	55	43,9	cyclictest	2195598	-21	ls	10:30:02	0
2097040	99	55	34,18	cyclictest	2279788	-21	fschecks_count	12:10:18	0
2097042	99	54	46,6	cyclictest	2181324	-21	kworker/u4:1+events_unbound	10:38:04	1
2097042	99	54	45,7	cyclictest	2176101	-21	sshd	10:05:47	1
2097042	99	54	41,6	cyclictest	2122345	-21	kworker/u4:15+events_unbound	08:56:00	1
2097042	99	54	41,6	cyclictest	2100796	-21	kworker/u4:9+events_unbound	07:30:59	1
2097040	99	54	46,6	cyclictest	2140879	-21	diskstats	09:25:18	0
2097040	99	54	45,6	cyclictest	2097038	-21	cyclictest	09:43:06	0
2097040	99	54	41,7	cyclictest	2250924	-21	ntpq	11:35:29	0
2097042	99	53	46,5	cyclictest	2302918	-21	kworker/u4:1+events_unbound	12:40:00	1
2097042	99	53	45,5	cyclictest	2263029	-21	/usr/sbin/munin	11:50:22	1
2097040	99	53	31,20	cyclictest	2292621	-21	kernelversion	12:25:21	0
2097042	99	52	45,5	cyclictest	2275708	-21	gltestperf	12:05:20	1
2097040	99	52	45,5	cyclictest	2180333	-21	sshd	10:10:49	0
2097040	99	52	41,8	cyclictest	2170388	-21	gpgv	10:00:01	0
2097040	99	51	44,5	cyclictest	2287589	-21	sendmail	12:20:00	0
2097040	99	51	44,5	cyclictest	2225653	-21	if_eth0	11:05:21	0
2097040	99	51	42,7	cyclictest	2204139	-21	ssh	10:40:02	0
2097040	99	51	40,6	cyclictest	54	-21	kswapd0	11:50:07	0
2097040	99	51	32,6	cyclictest	0	-21	swapper/0	10:55:32	0
2097042	99	50	43,5	cyclictest	2255198	-21	ld	11:40:32	1
2097042	99	50	43,5	cyclictest	2191899	-21	fschecks_count	10:25:18	1
2097042	99	50	42,6	cyclictest	2271196	-21	/usr/sbin/munin	12:00:16	1
2097042	99	50	38,5	cyclictest	2094560	-21	kworker/u4:1+events_unbound	07:25:44	1
2097042	99	50	37,5	cyclictest	2108362	-21	kworker/u4:4+events_unbound	08:37:01	1
2097042	99	50	19,19	cyclictest	0	-21	swapper/1	12:14:55	1
2097042	99	50	19,19	cyclictest	0	-21	swapper/1	10:45:01	1
2097040	99	50	43,5	cyclictest	2267666	-21	/usr/sbin/munin	11:55:30	0
2097040	99	50	33,14	cyclictest	0	-21	swapper/0	09:20:33	0
2097040	99	50	29,18	cyclictest	2254787	-21	fschecks_time	11:40:20	0
2097042	99	49	42,5	cyclictest	2141646	-21	switchtime	09:25:37	1
2097042	99	49	42,5	cyclictest	2108362	-21	kworker/u4:4+events_unbound	08:25:03	1
2097042	99	49	41,5	cyclictest	2134293	-21	kworker/u4:8-rpciod	09:20:31	1
2097042	99	49	40,7	cyclictest	2238165	-21	gltestperf	11:20:21	1
2097042	99	49	40,7	cyclictest	2117303	-21	kworker/u4:14+events_unbound	08:30:30	1
2097042	99	49	40,6	cyclictest	2108362	-21	kworker/u4:4-rpciod	08:25:01	1
2097042	99	49	38,9	cyclictest	2225378	-21	/usr/sbin/munin	11:05:17	1
2097042	99	49	38,7	cyclictest	2174525	-21	latency_hist	10:05:01	1
2097040	99	49	42,5	cyclictest	2259581	-21	ls	11:45:36	0
2097040	99	49	42,5	cyclictest	2144845	-21	sh	09:30:11	0
2097040	99	49	41,6	cyclictest	2187872	-21	gltestperf	10:20:21	0
2097042	99	48	42,4	cyclictest	2212424	-21	latency_hist	10:50:01	1
2097042	99	48	41,5	cyclictest	2250161	-21	find	11:35:11	1
2097042	99	48	38,7	cyclictest	0	-21	swapper/1	09:55:46	1
2097040	99	48	41,5	cyclictest	2268817	-21	kworker/u4:11+events_unbound	12:01:11	0
2097040	99	48	41,5	cyclictest	2119392	-21	sshd	08:35:29	0
2097040	99	48	40,6	cyclictest	2212973	-21	tune2fs	10:50:20	0
2097040	99	48	40,6	cyclictest	2108367	-21	kworker/u4:10+events_unbound	07:55:19	0
2097040	99	48	38,8	cyclictest	2103556	-21	aten_r7power_cu	07:35:16	0
2097040	99	48	32,10	cyclictest	2117320	-21	modprobe	08:30:00	0
2097042	99	47	40,5	cyclictest	2233741	-21	fschecks_count	11:15:19	1
2097042	99	47	39,5	cyclictest	2145865	-21	grep	09:30:35	1
2097042	99	47	36,9	cyclictest	2103489	-21	systemd	07:35:04	1
2097040	99	47	40,5	cyclictest	2184083	-21	mailstats	10:15:38	0
2097040	99	47	40,5	cyclictest	2132927	-21	wc	09:15:36	0
2097040	99	47	40,5	cyclictest	2128390	-21	ntpq	09:10:25	0
2097040	99	47	39,5	cyclictest	0	-21	swapper/0	09:55:00	0
2097040	99	47	37,7	cyclictest	255	50	irq/23-42890000.ethernet	10:35:32	0
2097040	99	47	36,8	cyclictest	0	-21	swapper/0	12:35:29	0
2097040	99	47	25,20	cyclictest	2260958	-21	kworker/u4:1+rpciod	12:10:01	0
2097042	99	46	40,4	cyclictest	2110909	-21	kworker/u4:11+events_unbound	08:03:01	1
2097042	99	46	39,5	cyclictest	2248754	-21	sshd	11:33:05	1
2097042	99	46	39,5	cyclictest	2206311	-21	kworker/u4:5-rpciod	11:00:19	1
2097042	99	46	38,6	cyclictest	2259504	-21	sendmail_mailqu	11:45:35	1
2097042	99	46	38,5	cyclictest	2128933	-21	grep	09:10:38	1
2097042	99	46	38,5	cyclictest	2113631	-21	latency_hist	08:15:02	1
2097042	99	46	37,6	cyclictest	2183300	-21	aten_r7power_vo	10:15:18	1
2097042	99	46	34,5	cyclictest	2117301	-21	kworker/u4:7+events_unbound	08:47:02	1
2097040	99	46	40,4	cyclictest	2221404	-21	gltestperf	11:00:21	0
2097040	99	46	39,5	cyclictest	2099550	-21	kworker/u4:6	07:20:01	0
2097040	99	46	37,6	cyclictest	2238704	-21	switchtime	11:20:38	0
2097040	99	46	35,9	cyclictest	2124555	-21	sendmail_mailtr	08:55:38	0
2097040	99	46	29,14	cyclictest	2243087	-21	/usr/sbin/munin	11:25:39	0
2097042	99	45	37,6	cyclictest	2132102	-21	aten_r7power_cu	09:15:14	1
2097042	99	45	37,5	cyclictest	2098403	-21	cat	07:15:01	1
2097042	99	45	36,6	cyclictest	0	-21	swapper/1	11:25:18	1
2097040	99	45	37,5	cyclictest	2196409	-21	/usr/sbin/munin	10:30:24	0
2097040	99	45	35,7	cyclictest	2119811	-21	kworker/u4:5-rpciod	08:45:00	0
2097040	99	45	3,19	cyclictest	2234289	-21	ssh	11:15:34	0
2097042	99	44	38,4	cyclictest	2229360	-21	aten_r7power_cu	11:10:15	1
2097042	99	44	37,5	cyclictest	2206311	-21	kworker/u4:5+events_unbound	10:55:44	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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