OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

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 Jun 28, 2026 00:44:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2783640	99	107	99,6	cyclictest	2879080	-21	kworker/u4:8+events_unbound	22:38:02	1
2783640	99	104	94,7	cyclictest	2834722	-21	kworker/u4:8+events_unbound	21:32:47	1
2783640	99	103	95,6	cyclictest	2923367	-21	kworker/u4:11+events_unbound	23:13:18	1
2783638	99	96	76,17	cyclictest	2783635	-21	cyclictest	23:40:11	0
2783638	99	96	76,17	cyclictest	2783635	-21	cyclictest	23:40:10	0
2783640	99	94	86,6	cyclictest	2874611	-21	kworker/u4:7+events_unbound	22:17:58	1
2783640	99	94	86,6	cyclictest	2795167	-21	kworker/u4:8+events_unbound	19:55:00	1
2783640	99	90	80,7	cyclictest	2879080	-21	kworker/u4:8+events_unbound	22:25:00	1
2783640	99	86	78,5	cyclictest	2879079	-21	kworker/u4:5+events_unbound	22:28:02	1
2783640	99	85	72,9	cyclictest	2905400	-21	kworker/u4:6+events_unbound	23:20:01	1
2783638	99	85	77,5	cyclictest	0	-21	swapper/0	22:15:31	0
2783638	99	81	31,40	cyclictest	2969712	-21	fschecks_count	00:05:21	0
2783640	99	79	67,8	cyclictest	0	-21	swapper/1	23:25:32	1
2783638	99	79	30,39	cyclictest	2815649	-21	ntpq	21:10:42	0
2783640	99	78	70,6	cyclictest	2825704	-21	kworker/u4:8+events_unbound	21:22:45	1
2783640	99	78	60,6	cyclictest	2847655	-21	kworker/u4:10+events_unbound	21:47:48	1
2783638	99	78	26,28	cyclictest	0	-21	swapper/0	22:50:34	0
2783638	99	77	12,40	cyclictest	0	-21	swapper/0	00:10:35	0
2783638	99	76	67,6	cyclictest	2793895	-21	kworker/u4:2+events_unbound	20:20:00	0
2783638	99	76	5,62	cyclictest	2783635	-21	cyclictest	19:10:00	0
2783640	99	75	68,5	cyclictest	2874611	-21	kworker/u4:7+events_unbound	22:50:00	1
2783638	99	75	26,37	cyclictest	0	-21	swapper/0	22:40:37	0
2783638	99	75	21,28	cyclictest	0	-21	swapper/0	22:47:13	0
2783638	99	74	65,6	cyclictest	53	-21	kswapd0	22:35:15	0
2783638	99	74	2,47	cyclictest	2888129	-21	ssh	22:32:31	0
2783640	99	71	50,9	cyclictest	2783564	-21	kworker/u4:6+events_unbound	19:35:02	1
2783640	99	71	50,9	cyclictest	2783564	-21	kworker/u4:6+events_unbound	19:35:01	1
2783638	99	69	60,6	cyclictest	2879081	-21	kworker/u4:10+events_unbound	22:23:02	0
2783638	99	69	3,62	cyclictest	2908404	-21	ntpq	22:55:24	0
2783638	99	69	32,34	cyclictest	2837440	-21	if_eth0	21:35:22	0
2783638	99	68	2,61	cyclictest	2881218	-21	ssh	22:25:16	0
2783638	99	68	24,35	cyclictest	2783635	-21	cyclictest	00:18:57	0
2783640	99	67	61,4	cyclictest	2905396	-21	kworker/u4:1+events_unbound	23:08:12	1
2783640	99	67	58,7	cyclictest	2900889	-21	kworker/u4:13+events_unbound	23:45:01	1
2783640	99	67	58,7	cyclictest	2900889	-21	kworker/u4:13+events_unbound	23:45:00	1
2783638	99	67	60,4	cyclictest	2961610	-21	grep	23:55:37	0
2783638	99	67	57,8	cyclictest	2793895	-21	kworker/u4:2+events_unbound	21:10:01	0
2783638	99	67	37,27	cyclictest	2791411	-21	apt-key	19:40:02	0
2783638	99	66	50,10	cyclictest	2984689	-21	kworker/u4:10-events_power_efficient	00:26:40	0
2783638	99	66	34,30	cyclictest	2809812	-21	gltestperf	20:50:19	0
2783638	99	66	2,59	cyclictest	2785627	-21	ntpq	19:15:26	0
2783638	99	66	2,59	cyclictest	2785627	-21	ntpq	19:15:26	0
2783638	99	66	1,44	cyclictest	2968472	-21	ssh	00:04:02	0
2783638	99	65	33,29	cyclictest	2991760	-21	fschecks_count	00:30:20	0
2783638	99	65	2,59	cyclictest	2957049	-21	ntpq	23:50:34	0
2783638	99	64	4,55	cyclictest	2797933	-21	apt-get	20:05:13	0
2783638	99	64	32,29	cyclictest	2860360	-21	unixbench_singl	22:00:42	0
2783638	99	64	2,57	cyclictest	2850322	-21	ssh	21:50:17	0
2783638	99	64	19,28	cyclictest	256	50	irq/23-42890000.ethernet	22:05:35	0
2783638	99	63	32,27	cyclictest	2827727	-21	apt-get	21:25:09	0
2783638	99	63	2,56	cyclictest	2823588	-21	ssh	21:20:15	0
2783638	99	63	2,15	cyclictest	2917511	-21	ntpq	23:05:36	0
2783638	99	63	1,4	cyclictest	2845788	-21	apt-get	21:45:14	0
2783638	99	62	37,21	cyclictest	0	-21	swapper/0	23:30:10	0
2783638	99	62	3,6	cyclictest	2855372	-21	ntpq	21:55:31	0
2783638	99	62	31,26	cyclictest	0	-21	swapper/0	23:25:12	0
2783638	99	61	3,42	cyclictest	2947085	-21	ssh	23:40:00	0
2783640	99	60	50,8	cyclictest	53	-21	kswapd0	22:40:19	1
2783638	99	60	52,5	cyclictest	2905398	-21	kworker/u4:3+events_unbound	23:23:19	0
2783638	99	60	3,53	cyclictest	2789558	-21	ntpq	19:30:31	0
2783638	99	60	3,53	cyclictest	2789558	-21	ntpq	19:30:30	0
2783638	99	60	3,51	cyclictest	2807448	-21	ntpq	20:40:27	0
2783638	99	60	3,50	cyclictest	2783788	-21	apt-get	19:10:14	0
2783638	99	60	31,26	cyclictest	2787441	-21	kworker/u4:9+rpciod	19:45:34	0
2783638	99	60	27,30	cyclictest	2787299	-21	sed	19:20:40	0
2783638	99	60	27,30	cyclictest	0	-21	swapper/0	21:00:16	0
2783638	99	60	27,29	cyclictest	0	-21	swapper/0	22:10:27	0
2783638	99	60	2,19	cyclictest	2799791	-21	ntpq	20:10:26	0
2783638	99	60	1,6	cyclictest	2794651	-21	ntpq	19:50:24	0
2783638	99	59	3,52	cyclictest	2982604	-21	apt-get	00:20:13	0
2783638	99	59	3,39	cyclictest	2912879	-21	ntpq	23:00:25	0
2783638	99	59	2,53	cyclictest	2951846	-21	sh	23:45:12	0
2783640	99	58	47,8	cyclictest	2912190	-21	dpkg	23:00:13	1
2783638	99	58	3,51	cyclictest	2788236	-21	ntpq	19:25:29	0
2783638	99	58	3,50	cyclictest	2921700	-21	ntpq	23:10:26	0
2783638	99	58	26,28	cyclictest	2993642	-21	kworker/u4:3-rpciod	00:35:34	0
2783638	99	58	2,53	cyclictest	2925411	-21	apt-get	23:15:12	0
2783640	99	57	50,5	cyclictest	2966772	-21	kworker/u4:12+events_unbound	00:02:58	1
2783640	99	57	50,5	cyclictest	2810496	-21	kworker/u4:12+events_unbound	21:00:02	1
2783640	99	57	50,5	cyclictest	0	-21	swapper/1	23:20:33	1
2783640	99	57	40,14	cyclictest	0	-21	swapper/1	20:25:35	1
2783640	99	57	40,14	cyclictest	0	-21	swapper/1	20:25:34	1
2783638	99	57	3,5	cyclictest	2792102	-21	ntpq	19:40:29	0
2783638	99	57	2,15	cyclictest	2808706	-21	ntpq	20:45:27	0
2783638	99	57	21,33	cyclictest	256	50	irq/23-42890000.ethernet	21:15:38	0
2783638	99	57	1,5	cyclictest	2797133	-21	irqstats	20:00:20	0
2783638	99	57	1,52	cyclictest	2802381	-21	ntpq	20:20:32	0
2783640	99	56	48,7	cyclictest	53	-21	kswapd0	00:15:16	1
2783640	99	56	45,6	cyclictest	0	-21	swapper/1	22:50:32	1
2783638	99	56	3,48	cyclictest	2795964	-21	ntpq	19:55:29	0
2783638	99	56	3,47	cyclictest	2805590	-21	apt-get	20:35:11	0
2783638	99	56	2,50	cyclictest	2811268	-21	ntpq	20:55:25	0
2783638	99	56	2,14	cyclictest	2842144	-21	ssh	21:40:30	0
2783638	99	56	1,12	cyclictest	2804891	-21	ntpq	20:30:26	0
2783640	99	55	38,6	cyclictest	2789974	-21	kworker/u4:15+events_unbound	19:45:01	1
2783640	99	54	49,4	cyclictest	2900889	-21	kworker/u4:13+events_unbound	23:50:59	1
2783640	99	54	49,4	cyclictest	2784856	-21	kworker/u4:7+events_unbound	20:05:01	1
2783640	99	54	46,6	cyclictest	2843786	-21	kworker/u4:6+events_unbound	21:57:52	1
2783640	99	54	45,6	cyclictest	0	-21	swapper/1	22:10:12	1
2783640	99	54	44,7	cyclictest	2900889	-21	kworker/u4:13+events_unbound	23:39:59	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


Access: public		Short link to this page
This page was last modified on 2019-05-28 - 00:17