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 376 highest latencies:

System rack7slot2.osadl.org (updated Thu Sep 10, 2026 00:44:09)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2178547	99	118	104,8	cyclictest	2234415	-21	kworker/u4:0+events_unbound	22:31:48	1
2178544	99	106	98,6	cyclictest	2270275	-21	kworker/u4:17+events_unbound	22:21:45	0
2178544	99	106	98,6	cyclictest	2270275	-21	kworker/u4:17+events_unbound	22:21:45	0
2178544	99	96	89,5	cyclictest	2342605	-21	kworker/u4:5+events_unbound	23:41:57	0
2178544	99	96	89,5	cyclictest	2342605	-21	kworker/u4:5+events_unbound	23:41:57	0
2178544	99	95	82,9	cyclictest	2232352	-21	ssh	21:35:21	0
2178547	99	91	43,44	cyclictest	0	-21	swapper/1	22:45:25	1
2178544	99	91	83,6	cyclictest	2350993	-21	kworker/u4:12+events_unbound	23:46:54	0
2178544	99	88	75,9	cyclictest	2250193	-21	ssh	21:55:12	0
2178544	99	87	80,5	cyclictest	2179861	-21	kworker/u4:8+events_unbound	19:56:20	0
2178544	99	87	79,6	cyclictest	2395400	-21	kworker/u4:3+events_unbound	00:38:41	0
2178544	99	87	79,6	cyclictest	2355501	-21	kworker/u4:15+events_unbound	23:52:25	0
2178547	99	81	72,6	cyclictest	2188910	-21	kworker/u4:1+events_unbound	20:21:24	1
2178544	99	81	58,19	cyclictest	53	-21	kswapd0	23:30:13	0
2178544	99	80	3,24	cyclictest	2223434	-21	ssh	21:25:08	0
2178544	99	79	72,5	cyclictest	2187640	-21	kworker/u4:22+events_unbound	20:01:23	0
2178544	99	79	71,6	cyclictest	2188910	-21	kworker/u4:1+events_unbound	20:31:26	0
2178544	99	78	70,6	cyclictest	2195380	-21	kworker/u4:10+events_unbound	21:31:38	0
2178544	99	77	66,8	cyclictest	53	-21	kswapd0	00:25:14	0
2178547	99	76	36,5	cyclictest	2286682	-21	/usr/sbin/munin	22:35:22	1
2178544	99	76	69,5	cyclictest	2188910	-21	kworker/u4:1+events_unbound	20:56:32	0
2178544	99	76	68,6	cyclictest	2188910	-21	kworker/u4:1+events_unbound	20:06:24	0
2178544	99	74	12,16	cyclictest	2178517	-21	apt-get	19:10:00	0
2178547	99	72	42,27	cyclictest	2297675	-21	kworker/u4:11-rpciod	22:50:21	1
2178547	99	72	35,7	cyclictest	0	-21	swapper/1	21:05:34	1
2178544	99	71	2,54	cyclictest	2185260	-21	apt-get	19:35:17	0
2178544	99	69	56,8	cyclictest	2212608	-21	sh	21:12:49	0
2178544	99	68	60,6	cyclictest	2177277	-21	kworker/u4:5+events_unbound	19:51:20	0
2178544	99	68	57,8	cyclictest	2324505	-21	kworker/u4:1+xprtiod	23:55:09	0
2178547	99	67	53,10	cyclictest	53	-21	kswapd0	00:05:13	1
2178544	99	65	45,7	cyclictest	2360004	-21	kworker/u4:3+events_unbound	00:10:04	0
2178547	99	64	57,4	cyclictest	0	-21	swapper/1	22:25:24	1
2178544	99	64	26,30	cyclictest	256	50	irq/23-42890000.ethernet	20:10:09	0
2178544	99	62	54,6	cyclictest	2181144	-21	kworker/u4:13+events_unbound	19:21:15	0
2178544	99	62	35,14	cyclictest	0	-21	swapper/0	20:15:14	0
2178544	99	61	54,4	cyclictest	2218675	-21	latency_hist	21:20:01	0
2178544	99	60	52,6	cyclictest	2261111	-21	kworker/u4:2+events_unbound	22:14:31	0
2178547	99	59	52,5	cyclictest	2341947	-21	kworker/u4:4+events_unbound	23:36:58	1
2178547	99	58	51,5	cyclictest	2248123	-21	kworker/u4:4+events_unbound	21:55:02	1
2178547	99	58	51,5	cyclictest	2248123	-21	kworker/u4:4+events_unbound	21:55:02	1
2178547	99	58	49,6	cyclictest	2176045	-21	kworker/u4:4+events_unbound	19:16:16	1
2178544	99	58	47,9	cyclictest	53	-21	kswapd0	23:15:11	0
2178544	99	58	44,9	cyclictest	53	-21	kswapd0	23:00:36	0
2178544	99	58	44,6	cyclictest	2187640	-21	kworker/u4:22+events_unbound	20:40:02	0
2178547	99	56	48,6	cyclictest	2248122	-21	kworker/u4:3+events_unbound	22:01:42	1
2178544	99	56	9,42	cyclictest	2218951	-21	ssh	21:20:14	0
2178544	99	56	49,5	cyclictest	2179861	-21	kworker/u4:8+events_unbound	19:46:19	0
2178544	99	55	43,9	cyclictest	2259483	-21	grep	22:05:19	0
2178547	99	54	7,38	cyclictest	2264453	-21	ssh	22:10:30	1
2178547	99	54	44,6	cyclictest	2272759	-21	/usr/sbin/munin	22:20:16	1
2178547	99	54	44,6	cyclictest	2272759	-21	/usr/sbin/munin	22:20:16	1
2178544	99	54	38,5	cyclictest	2266375	-21	kworker/u4:7+events_unbound	22:32:38	0
2178547	99	53	45,6	cyclictest	2309344	-21	/usr/sbin/munin	23:00:26	1
2178547	99	53	44,7	cyclictest	2188910	-21	kworker/u4:1+events_unbound	20:45:25	1
2178547	99	53	42,8	cyclictest	2371481	-21	fschecks_count	00:10:22	1
2178544	99	53	4,13	cyclictest	53	-21	kswapd0	00:30:09	0
2178544	99	53	40,10	cyclictest	2205698	-21	kworker/u4:1	20:55:00	0
2178544	99	52	46,5	cyclictest	2238999	-21	kworker/u4:1+events_unbound	21:51:40	0
2178544	99	52	46,5	cyclictest	2238999	-21	kworker/u4:1+events_unbound	21:51:40	0
2178544	99	52	44,6	cyclictest	2382535	-21	kworker/u4:11+events_unbound	00:25:01	0
2178544	99	52	44,5	cyclictest	0	-21	swapper/0	00:10:01	0
2178547	99	51	44,5	cyclictest	2248124	-21	kworker/u4:5+events_unbound	22:06:43	1
2178547	99	51	42,6	cyclictest	2362957	-21	ldconfig	00:00:27	1
2178547	99	51	39,9	cyclictest	2205677	-21	systemd	20:51:29	1
2178547	99	50	42,6	cyclictest	2178542	-21	cyclictest	23:53:22	1
2178547	99	50	37,11	cyclictest	27	1	ktimers/1	00:25:26	1
2178544	99	50	43,5	cyclictest	2239001	-21	kworker/u4:3+events_unbound	21:45:02	0
2178544	99	50	41,7	cyclictest	378	-21	dbus-daemon	22:56:49	0
2178544	99	50	41,7	cyclictest	2281341	-21	munin-run	22:30:00	0
2178544	99	50	31,16	cyclictest	2268555	-21	fschecks_time	22:15:16	0
2178544	99	50	30,17	cyclictest	0	-21	swapper/0	23:35:26	0
2178544	99	50	23,21	cyclictest	0	-21	swapper/0	19:10:11	0
2178544	99	50	23,21	cyclictest	0	-21	swapper/0	19:10:11	0
2178544	99	49	42,5	cyclictest	2194024	-21	kworker/u4:9+events_unbound	20:25:13	0
2178544	99	49	29,17	cyclictest	0	-21	swapper/0	22:50:21	0
2178544	99	49	26,6	cyclictest	2195381	-21	kworker/u4:11-rpciod	22:00:19	0
2178547	99	48	43,3	cyclictest	0	-21	swapper/1	00:30:21	1
2178547	99	48	42,4	cyclictest	2206946	-21	systemd	20:56:31	1
2178547	99	48	40,6	cyclictest	2375884	-21	fschecks_time	00:15:17	1
2178547	99	48	39,7	cyclictest	2332558	-21	sh	23:25:44	1
2178547	99	48	38,6	cyclictest	2219664	-21	ntpq	21:20:28	1
2178547	99	48	37,6	cyclictest	0	-21	swapper/1	21:15:00	1
2178544	99	48	37,8	cyclictest	2321867	-21	cron	23:15:00	0
2178547	99	47	39,5	cyclictest	2206955	-21	kworker/u4:6+events_unbound	21:25:14	1
2178547	99	47	38,7	cyclictest	2297674	-21	kworker/u4:10+events_unbound	23:10:19	1
2178547	99	47	38,7	cyclictest	2206954	-21	kworker/u4:5+events_unbound	21:01:32	1
2178547	99	47	38,5	cyclictest	2236865	-21	/usr/sbin/munin	21:40:19	1
2178547	99	47	33,10	cyclictest	0	-21	swapper/1	22:55:27	1
2178547	99	46	39,5	cyclictest	2254377	-21	kworker/u4:12	22:00:01	1
2178547	99	46	37,6	cyclictest	2195380	-21	kworker/u4:10-rpciod	20:40:00	1
2178547	99	46	36,8	cyclictest	2327110	-21	fschecks_time	23:20:19	1
2178547	99	46	36,7	cyclictest	2314429	-21	unixbench-2d	23:05:40	1
2178547	99	46	32,8	cyclictest	2232009	-21	apt-get	21:35:11	1
2178544	99	46	40,4	cyclictest	2331553	-21	fschecks_time	23:25:20	0
2178544	99	46	39,5	cyclictest	2375862	-21	fschecks_time	00:15:17	0
2178544	99	46	39,5	cyclictest	2183645	-21	unixbench_singl	19:25:39	0
2178544	99	46	33,7	cyclictest	2360001	-21	kworker/u4:0+events_unbound	00:01:12	0
2178547	99	45	40,3	cyclictest	2177277	-21	kworker/u4:5+events_unbound	19:36:17	1
2178547	99	45	38,5	cyclictest	2335949	-21	aten_r7power_vo	23:30:28	1
2178547	99	45	38,5	cyclictest	2192803	-21	grep	20:05:01	1
2178547	99	45	37,6	cyclictest	2380479	-21	gltestperf	00:20:20	1
2178547	99	45	30,11	cyclictest	0	-21	swapper/1	23:15:19	1
2178544	99	45	37,5	cyclictest	2198012	-21	unixbench_singl	20:20:38	0
2178544	99	45	30,9	cyclictest	0	-21	swapper/0	22:41:27	0
2178544	99	45	25,13	cyclictest	2297003	-21	kworker/u4:6+events_unbound	22:48:56	0
2178547	99	44	38,4	cyclictest	2350106	-21	sed	23:45:38	1
2178547	99	44	38,4	cyclictest	2196747	-21	kworker/u4:13-rpciod	21:20:02	1
2178547	99	44	38,4	cyclictest	2188900	-21	systemd	19:46:18	1
2178547	99	44	37,5	cyclictest	2198560	-21	fschecks_time	20:25:19	1
2178547	99	44	37,5	cyclictest	2181129	-21	kworker/u4:10+events_unbound	19:31:17	1
2178547	99	44	35,7	cyclictest	340	-21	systemd-udevd	23:59:44	1
2178547	99	44	35,5	cyclictest	0	-21	swapper/1	22:40:37	1
2178547	99	44	35,4	cyclictest	2181145	-21	kworker/u4:14-rpciod	19:25:01	1
2178547	99	44	34,6	cyclictest	0	-21	swapper/1	21:30:26	1
2178544	99	44	39,4	cyclictest	2178542	-21	cyclictest	22:35:13	0
2178544	99	44	38,4	cyclictest	2187640	-21	kworker/u4:22+events_unbound	20:46:34	0
2178544	99	44	36,6	cyclictest	2297004	-21	kworker/u4:7+events_unbound	23:05:02	0
2178544	99	44	36,5	cyclictest	2208251	-21	kworker/u4:7-rpciod	21:10:01	0
2178544	99	44	36,5	cyclictest	2207415	-21	fschecks_count	21:00:19	0
2178544	99	44	34,6	cyclictest	0	-21	swapper/0	23:20:36	0
2178547	99	43	36,5	cyclictest	2245455	-21	latency_hist	21:50:01	1
2178547	99	43	36,4	cyclictest	0	-21	swapper/1	19:10:00	1
2178547	99	43	34,6	cyclictest	0	-21	swapper/1	23:40:29	1
2178547	99	43	34,6	cyclictest	0	-21	swapper/1	23:40:29	1
2178547	99	43	31,10	cyclictest	2394204	-21	proc_pri	00:35:38	1
2178547	99	42	34,6	cyclictest	2187740	-21	latency_hist	19:45:01	1
2178547	99	42	33,7	cyclictest	2268466	-21	forks	22:15:16	1
2178547	99	42	33,6	cyclictest	2194022	-21	kworker/u4:6+events_unbound	20:11:23	1
2178547	99	42	32,8	cyclictest	2183711	-21	kworker/u4:4-rpciod	19:50:36	1
2178547	99	42	32,7	cyclictest	2182660	-21	aten2__	19:25:16	1
2178544	99	42	33,7	cyclictest	2200792	-21	aten2__	20:35:15	0
2178547	99	41	31,8	cyclictest	0	-21	swapper/1	20:35:00	1
2178547	99	41	30,8	cyclictest	0	-21	swapper/1	20:20:00	1
2178547	99	41	27,11	cyclictest	0	-21	swapper/1	19:55:16	1
2178547	99	41	25,13	cyclictest	0	-21	swapper/1	20:05:16	1
2178544	99	41	34,5	cyclictest	2242237	-21	mailstats	21:45:37	0
2178547	99	40	31,7	cyclictest	2203248	-21	latency_hist	20:45:01	1
2178547	99	40	30,7	cyclictest	0	-21	swapper/1	19:10:29	1
2178547	99	40	30,7	cyclictest	0	-21	swapper/1	19:10:29	1
2178544	99	40	32,6	cyclictest	2187477	-21	timerwakeupswit	19:40:40	0
2178544	99	40	31,6	cyclictest	2181153	-21	cron	19:20:00	0
2178544	99	36	27,6	cyclictest	0	-21	swapper/0	19:30:17	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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