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 Sun May 10, 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
2328939	99	110	102,6	cyclictest	2379871	-21	kworker/u4:3+events_unbound	21:33:01	0
2328939	99	107	99,6	cyclictest	2388830	-21	kworker/u4:15+events_unbound	21:43:02	0
2328939	99	102	94,6	cyclictest	2355898	-21	kworker/u4:5+events_unbound	20:52:56	0
2328939	99	99	90,6	cyclictest	2406541	-21	kworker/u4:0+events_unbound	22:13:07	0
2328939	99	99	83,12	cyclictest	2515154	-21	kworker/u4:0+events_unbound	00:08:24	0
2328939	99	92	85,5	cyclictest	2339203	-21	kworker/u4:1+events_unbound	20:17:52	0
2328939	99	91	84,5	cyclictest	2350790	-21	kworker/u4:13+events_unbound	20:42:56	0
2328939	99	91	83,6	cyclictest	2323934	-21	kworker/u4:0+events_unbound	19:42:46	0
2328939	99	90	11,23	cyclictest	2328912	-21	apt-get	19:09:59	0
2328941	99	87	80,5	cyclictest	2371567	-21	kworker/u4:10+events_unbound	21:22:59	1
2328939	99	87	71,7	cyclictest	2445816	-21	kworker/u4:9+events_unbound	23:08:11	0
2328939	99	87	71,11	cyclictest	53	-21	kswapd0	00:20:12	0
2328939	99	85	5,73	cyclictest	0	-21	swapper/0	22:35:30	0
2328939	99	83	76,5	cyclictest	2328871	-21	kworker/u4:8+events_unbound	19:17:42	0
2328941	99	81	75,4	cyclictest	2355898	-21	kworker/u4:5+events_unbound	21:10:01	1
2328939	99	80	51,25	cyclictest	2347160	-21	find	20:20:12	0
2328939	99	76	67,6	cyclictest	2428078	-21	kworker/u4:2+events_unbound	22:35:00	0
2328939	99	74	68,5	cyclictest	2355898	-21	kworker/u4:5+events_unbound	21:02:58	0
2328941	99	73	66,5	cyclictest	2354622	-21	kworker/u4:0+events_unbound	21:48:03	1
2328941	99	71	63,6	cyclictest	2339206	-21	kworker/u4:6+events_unbound	20:40:01	1
2328941	99	69	63,4	cyclictest	2330250	-21	kworker/u4:10+events_unbound	19:40:02	1
2328941	99	67	54,10	cyclictest	2491910	-21	ssh	23:40:23	1
2328939	99	66	56,8	cyclictest	378	-21	dbus-daemon	23:58:21	0
2328939	99	65	47,13	cyclictest	2487212	-21	fschecks_count	23:35:19	0
2328941	99	64	56,6	cyclictest	2441390	-21	kworker/u4:6+events_unbound	22:48:10	1
2328941	99	64	56,6	cyclictest	2441390	-21	kworker/u4:6+events_unbound	22:48:09	1
2328941	99	61	51,7	cyclictest	53	-21	kswapd0	23:40:02	1
2328941	99	60	50,7	cyclictest	37	-21	kcompactd0	22:59:31	1
2328941	99	57	48,5	cyclictest	2405465	-21	/usr/sbin/munin	22:00:41	1
2328941	99	57	32,15	cyclictest	0	-21	swapper/1	21:40:40	1
2328939	99	57	50,5	cyclictest	2441390	-21	kworker/u4:6+events_unbound	22:45:01	0
2328941	99	56	49,5	cyclictest	2480414	-21	kworker/u4:2+events_unbound	23:48:19	1
2328941	99	56	47,7	cyclictest	37	-21	kcompactd0	00:10:13	1
2328939	99	56	47,6	cyclictest	2421923	-21	fschecks_count	22:20:19	0
2328941	99	55	7,37	cyclictest	2467173	-21	kworker/u4:3+rpciod	23:20:34	1
2328941	99	55	47,6	cyclictest	2355898	-21	kworker/u4:5+events_unbound	20:55:01	1
2328941	99	55	45,8	cyclictest	2340482	-21	systemd	19:52:46	1
2328939	99	55	9,38	cyclictest	2359774	-21	diskmemload	00:15:25	0
2328941	99	54	49,3	cyclictest	2348250	-21	kworker/u4:4+events_unbound	20:47:55	1
2328941	99	54	46,5	cyclictest	2396269	-21	/usr/sbin/munin	21:50:34	1
2328941	99	54	36,8	cyclictest	2416940	-21	apt-get	22:15:10	1
2328939	99	54	35,17	cyclictest	2340516	-21	munin-plugin-st	19:55:00	0
2328939	99	53	31,15	cyclictest	0	-21	swapper/0	22:15:09	0
2328939	99	53	30,12	cyclictest	2535237	-21	grep	00:30:19	0
2328941	99	52	44,6	cyclictest	378	-21	dbus-daemon	23:13:11	1
2328941	99	52	44,6	cyclictest	2362464	-21	kworker/u4:2+events_unbound	21:17:59	1
2328939	99	52	33,5	cyclictest	2388830	-21	kworker/u4:15-xprtiod	21:45:18	0
2328939	99	52	31,18	cyclictest	0	-21	swapper/0	23:10:31	0
2328941	99	51	43,6	cyclictest	2435702	-21	/usr/sbin/munin	22:35:36	1
2328941	99	51	41,7	cyclictest	2431458	-21	timerandwakeup	22:30:39	1
2328939	99	51	44,5	cyclictest	2436939	-21	kworker/u4:4+events_unbound	23:30:06	0
2328939	99	51	43,6	cyclictest	2448779	-21	mailstats	22:50:35	0
2328939	99	51	43,5	cyclictest	53	-21	kswapd0	23:00:00	0
2328939	99	51	42,7	cyclictest	2444697	-21	unixbench_multi	22:45:41	0
2328939	99	51	42,7	cyclictest	2444697	-21	unixbench_multi	22:45:40	0
2328939	99	51	39,9	cyclictest	2495933	-21	fschecks_count	23:45:19	0
2328939	99	51	35,5	cyclictest	1062	-21	lldpd	20:35:42	0
2328941	99	50	43,5	cyclictest	2536732	-21	kworker/u4:8+events_unbound	00:39:58	1
2328941	99	50	37,5	cyclictest	2436941	-21	kworker/u4:7+events_unbound	22:53:10	1
2328939	99	50	43,5	cyclictest	2339203	-21	kworker/u4:1+events_unbound	20:45:04	0
2328939	99	50	43,5	cyclictest	2317834	-21	kworker/u4:12+events_unbound	19:23:01	0
2328939	99	50	42,6	cyclictest	2379870	-21	kworker/u4:1+events_unbound	21:52:00	0
2328939	99	50	35,11	cyclictest	2339229	-21	kworker/u4:7	19:50:00	0
2328939	99	50	34,13	cyclictest	2508986	-21	fschecks_count	00:00:21	0
2328941	99	49	43,4	cyclictest	2423651	-21	kworker/u4:16+events_unbound	22:23:00	1
2328941	99	49	42,5	cyclictest	2341806	-21	tr	20:00:01	1
2328941	99	49	40,5	cyclictest	37	-21	kcompactd0	23:15:19	1
2328939	99	49	42,5	cyclictest	2467175	-21	kworker/u4:12+events_unbound	23:50:59	0
2328939	99	49	39,8	cyclictest	2408635	-21	aten_r7power_po	22:05:17	0
2328939	99	49	35,9	cyclictest	2521036	-21	ssh	00:14:25	0
2328939	99	49	30,17	cyclictest	2359781	-21	munin-run	21:10:01	0
2328939	99	49	29,17	cyclictest	0	-21	swapper/0	23:15:18	0
2328941	99	48	39,6	cyclictest	2513509	-21	grep	00:05:20	1
2328939	99	48	41,5	cyclictest	2478532	-21	fschecks_time	23:25:19	0
2328939	99	48	41,5	cyclictest	2345498	-21	unixbench_multi	20:10:38	0
2328941	99	47	40,5	cyclictest	2535960	-21	grep	00:30:39	1
2328941	99	47	40,5	cyclictest	0	-21	swapper/1	00:25:16	1
2328941	99	47	39,6	cyclictest	37	-21	kcompactd0	00:00:14	1
2328941	99	47	39,6	cyclictest	2340478	-21	kworker/u4:10+events_unbound	20:27:54	1
2328941	99	47	39,6	cyclictest	2323934	-21	kworker/u4:0+events_unbound	20:12:51	1
2328941	99	47	36,7	cyclictest	0	-21	swapper/1	21:30:41	1
2328939	99	47	40,6	cyclictest	2342101	-21	aten_r7power_vo	20:00:15	0
2328939	99	47	39,6	cyclictest	2343513	-21	fschecks_count	20:05:18	0
2328939	99	47	39,5	cyclictest	2540073	-21	ntpq	00:35:34	0
2328939	99	47	28,15	cyclictest	0	-21	swapper/0	22:25:36	0
2328941	99	46	38,5	cyclictest	2408899	-21	fschecks_time	22:05:20	1
2328941	99	46	38,5	cyclictest	2374497	-21	switchtime	21:25:37	1
2328941	99	46	37,7	cyclictest	2330333	-21	latency_hist	19:15:00	1
2328941	99	46	37,5	cyclictest	2504693	-21	/usr/sbin/munin	23:55:21	1
2328941	99	46	36,8	cyclictest	0	-21	swapper/1	21:55:15	1
2328939	99	46	40,5	cyclictest	2319103	-21	kworker/u4:15+events_unbound	19:30:42	0
2328939	99	46	39,5	cyclictest	2330251	-21	kworker/u4:11+events_unbound	19:35:02	0
2328939	99	46	38,6	cyclictest	2369079	-21	aten_r7power_cu	21:20:16	0
2328939	99	46	38,5	cyclictest	2386431	-21	diskmemload	21:40:02	0
2328941	99	45	39,4	cyclictest	2426329	-21	fschecks_count	22:25:19	1
2328941	99	45	39,4	cyclictest	2339246	-21	munin-plugin-st	19:50:00	1
2328941	99	45	38,5	cyclictest	2335120	-21	switchtime	19:30:38	1
2328941	99	45	36,7	cyclictest	2346219	-21	gltestperf	20:15:20	1
2328939	99	45	39,4	cyclictest	2491480	-21	df_abs	23:40:14	0
2328939	99	45	38,6	cyclictest	2328871	-21	kworker/u4:8+events_unbound	19:28:01	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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