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 Sat Apr 18, 2026 12:44:08)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2799671	99	121	94,14	cyclictest	2808671	-21	kworker/u4:7+events_unbound	09:20:53	0
2799672	99	108	98,7	cyclictest	2842120	-21	kworker/u4:10+events_unbound	09:25:56	1
2799671	99	101	93,6	cyclictest	2898961	-21	kworker/u4:2+events_unbound	10:36:03	0
2799672	99	100	94,5	cyclictest	2877311	-21	kworker/u4:0+events_unbound	10:41:05	1
2799672	99	98	84,7	cyclictest	2802167	-21	kworker/u4:11+events_unbound	07:35:18	1
2799671	99	96	91,4	cyclictest	2808671	-21	kworker/u4:7+events_unbound	09:10:51	0
2799671	99	94	87,5	cyclictest	2846640	-21	kworker/u4:4+events_unbound	09:30:56	0
2799672	99	93	84,7	cyclictest	2812490	-21	kworker/u4:2+events_unbound	08:20:36	1
2799671	99	93	86,5	cyclictest	2933955	-21	kworker/u4:11+events_unbound	11:11:11	0
2799671	99	93	76,6	cyclictest	2833022	-21	kworker/u4:2+events_unbound	09:15:51	0
2799672	99	91	83,6	cyclictest	2808671	-21	kworker/u4:7+events_unbound	08:30:39	1
2799672	99	90	82,6	cyclictest	2921265	-21	kworker/u4:0+events_unbound	11:06:12	1
2799671	99	89	75,6	cyclictest	2818996	-21	kworker/u4:19+events_unbound	08:25:38	0
2799671	99	87	78,7	cyclictest	2851128	-21	kworker/u4:2+events_unbound	09:35:58	0
2799671	99	82	74,6	cyclictest	2881770	-21	kworker/u4:2+events_unbound	10:11:02	0
2799671	99	79	71,6	cyclictest	2977845	-21	kworker/u4:16+events_unbound	12:01:17	0
2799672	99	78	70,6	cyclictest	2877311	-21	kworker/u4:0+events_unbound	10:46:07	1
2799672	99	77	67,8	cyclictest	2808671	-21	kworker/u4:7+events_unbound	08:35:38	1
2799672	99	74	64,7	cyclictest	2785567	-21	kworker/u4:5+events_unbound	07:10:14	1
2799671	99	73	65,6	cyclictest	2842121	-21	kworker/u4:11+events_unbound	09:45:57	0
2799672	99	72	58,5	cyclictest	2813791	-21	kworker/u4:12+events_unbound	08:15:02	1
2799672	99	71	65,4	cyclictest	2956195	-21	kworker/u4:1+events_unbound	11:41:16	1
2799671	99	68	61,5	cyclictest	2809944	-21	kworker/u4:18+events_unbound	09:00:47	0
2799672	99	67	52,5	cyclictest	2785570	-21	kworker/u4:9+events_unbound	07:30:01	1
2799672	99	66	46,13	cyclictest	2875388	-21	fschecks_count	10:00:19	1
2799671	99	65	53,8	cyclictest	2799669	-21	cyclictest	10:08:00	0
2799672	99	64	55,7	cyclictest	2895161	-21	kworker/u4:1+events_unbound	10:25:01	1
2799671	99	64	57,5	cyclictest	2890714	-21	kworker/u4:3+events_unbound	10:26:03	0
2799672	99	63	55,6	cyclictest	2863915	-21	kworker/u4:16+events_unbound	09:55:59	1
2799671	99	62	38,13	cyclictest	2934597	-21	kworker/u4:12+events_unbound	11:09:41	0
2799671	99	61	56,3	cyclictest	2859466	-21	kworker/u4:14+events_unbound	09:51:00	0
2799671	99	61	35,14	cyclictest	2938390	-21	kworker/u4:15+events_unbound	11:16:00	0
2799672	99	60	53,5	cyclictest	2818996	-21	kworker/u4:19+events_unbound	08:45:01	1
2799671	99	60	50,8	cyclictest	2872825	-21	kworker/u4:10+events_unbound	10:22:00	0
2799672	99	59	52,5	cyclictest	3000120	-21	kworker/u4:9+events_unbound	12:30:42	1
2799671	99	59	52,5	cyclictest	3008985	-21	kworker/u4:0+events_unbound	12:39:59	0
2799671	99	59	50,7	cyclictest	2830464	-21	systemd	09:05:49	0
2799672	99	58	51,5	cyclictest	2802167	-21	kworker/u4:11+events_unbound	08:00:33	1
2799672	99	58	44,6	cyclictest	2812493	-21	kworker/u4:9+events_unbound	09:05:50	1
2799672	99	57	50,5	cyclictest	3000120	-21	kworker/u4:9+events_unbound	12:36:23	1
2799671	99	57	45,5	cyclictest	2921265	-21	kworker/u4:0+events_unbound	11:05:01	0
2799671	99	57	30,23	cyclictest	2971663	-21	grep	11:50:17	0
2799672	99	56	49,5	cyclictest	2956196	-21	kworker/u4:4+events_unbound	11:36:01	1
2799671	99	56	49,5	cyclictest	2784253	-21	kworker/u4:10+events_unbound	08:10:36	0
2799671	99	56	42,12	cyclictest	2923673	-21	fschecks_count	10:55:21	0
2799672	99	55	48,5	cyclictest	2947304	-21	kworker/u4:17+events_unbound	11:22:00	1
2799672	99	55	45,8	cyclictest	2805857	-21	timerwakeupswit	07:30:38	1
2799672	99	55	45,8	cyclictest	2802168	-21	kworker/u4:12+events_unbound	07:20:15	1
2799671	99	55	48,5	cyclictest	2995641	-21	kworker/u4:7+events_unbound	12:21:20	0
2799671	99	55	46,6	cyclictest	2870670	-21	grep	09:55:16	0
2799671	99	55	36,7	cyclictest	2982310	-21	kworker/u4:1+events_unbound	12:09:01	0
2799672	99	54	45,7	cyclictest	2895161	-21	kworker/u4:1+events_unbound	10:35:01	1
2799672	99	54	45,6	cyclictest	0	-21	swapper/1	12:00:14	1
2799672	99	54	36,7	cyclictest	2991193	-21	kworker/u4:0+events_unbound	12:15:01	1
2799672	99	54	35,6	cyclictest	2921265	-21	kworker/u4:0+events_unbound	11:03:42	1
2799672	99	54	34,7	cyclictest	2872825	-21	kworker/u4:10+events_unbound	10:30:02	1
2799671	99	54	47,5	cyclictest	53	-21	kswapd0	12:15:12	0
2799671	99	54	45,7	cyclictest	2784253	-21	kworker/u4:10+events_unbound	08:15:03	0
2799671	99	54	41,6	cyclictest	2822804	-21	kworker/u4:22+events_unbound	08:40:02	0
2799671	99	54	32,6	cyclictest	2947305	-21	kworker/u4:18+events_unbound	11:24:34	0
2799672	99	53	44,6	cyclictest	2833022	-21	kworker/u4:2+events_unbound	09:20:01	1
2799672	99	53	43,6	cyclictest	0	-21	swapper/1	09:30:12	1
2799671	99	53	46,5	cyclictest	2872825	-21	kworker/u4:10+events_unbound	10:18:43	0
2799671	99	53	45,5	cyclictest	2800068	-21	fschecks_count	07:10:19	0
2799671	99	53	41,8	cyclictest	53	-21	kswapd0	12:30:08	0
2799671	99	53	32,5	cyclictest	2977844	-21	kworker/u4:15+events_unbound	12:10:42	0
2799671	99	53	32,5	cyclictest	2977844	-21	kworker/u4:15+events_unbound	12:10:41	0
2799671	99	53	31,19	cyclictest	2803942	-21	fschecks_count	07:25:21	0
2799672	99	52	45,5	cyclictest	2872820	-21	kworker/u4:4+events_unbound	10:06:23	1
2799672	99	52	45,5	cyclictest	2858996	-21	systemd	09:40:57	1
2799672	99	52	44,6	cyclictest	2936739	-21	fschecks_count	11:10:19	1
2799672	99	52	44,6	cyclictest	2898961	-21	kworker/u4:2+events_unbound	10:36:05	1
2799672	99	52	44,5	cyclictest	2862888	-21	/usr/sbin/munin	09:45:47	1
2799672	99	52	41,8	cyclictest	2820421	-21	latency_hist	08:30:02	1
2799671	99	52	45,5	cyclictest	2876582	-21	systemd	10:00:58	0
2799671	99	52	44,6	cyclictest	2802168	-21	kworker/u4:12+events_unbound	07:17:00	0
2799671	99	52	43,6	cyclictest	2954273	-21	fschecks_time	11:30:17	0
2799671	99	52	36,7	cyclictest	2846642	-21	kworker/u4:9+events_unbound	09:40:05	0
2799672	99	51	43,6	cyclictest	2807976	-21	gltestperf	07:40:21	1
2799671	99	51	39,10	cyclictest	53	-21	kswapd0	11:40:08	0
2799672	99	50	43,5	cyclictest	2912372	-21	kworker/u4:14+events_unbound	11:26:14	1
2799672	99	50	38,9	cyclictest	2985364	-21	ntp_kernel_pll_	12:05:28	1
2799671	99	50	40,8	cyclictest	2795960	-21	kworker/u4:0+events_unbound	07:50:27	0
2799671	99	50	31,16	cyclictest	3006227	-21	wc	12:30:00	0
2799672	99	49	41,5	cyclictest	2814727	-21	sendmail_mailqu	08:05:36	1
2799672	99	49	35,11	cyclictest	0	-21	swapper/1	10:55:15	1
2799672	99	49	34,6	cyclictest	2822804	-21	kworker/u4:22+events_unbound	08:55:47	1
2799671	99	49	43,5	cyclictest	2956195	-21	kworker/u4:1+events_unbound	11:39:01	0
2799671	99	49	42,5	cyclictest	2890714	-21	kworker/u4:3+events_unbound	10:48:41	0
2799671	99	49	42,5	cyclictest	0	-21	swapper/0	11:55:30	0
2799671	99	49	41,6	cyclictest	2969584	-21	kworker/u4:7+events_unbound	11:49:59	0
2799671	99	49	41,6	cyclictest	2969584	-21	kworker/u4:7+events_unbound	11:49:59	0
2799671	99	49	41,5	cyclictest	2901434	-21	/usr/sbin/munin	10:30:15	0
2799671	99	49	38,8	cyclictest	2919123	-21	aten_r7power_vo	10:50:15	0
2799671	99	49	33,7	cyclictest	2912372	-21	kworker/u4:14+events_unbound	11:25:04	0
2799671	99	49	29,17	cyclictest	2808671	-21	kworker/u4:7-rpciod	07:45:38	0
2799672	99	48	42,5	cyclictest	2995640	-21	kworker/u4:5+events_unbound	12:22:01	1
2799672	99	48	41,5	cyclictest	2989708	-21	diskmemload	12:10:26	1
2799672	99	48	41,5	cyclictest	2989708	-21	diskmemload	12:10:26	1
2799672	99	48	37,8	cyclictest	2884259	-21	gltestperf	10:10:19	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