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 Wed Apr 15, 2026 12:44:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2943751	99	111	93,16	cyclictest	3043366	-21	kworker/u4:8+events_unbound	10:58:59	0
2943751	99	102	93,6	cyclictest	2968078	-21	kworker/u4:10+events_unbound	09:33:44	0
2943751	99	85	43,9	cyclictest	0	-21	swapper/0	10:05:29	0
2943753	99	83	38,7	cyclictest	0	-21	swapper/1	09:10:19	1
2943753	99	74	66,6	cyclictest	3096647	-21	kworker/u4:1+events_unbound	11:29:03	1
2943753	99	72	42,5	cyclictest	2943748	-21	cyclictest	09:50:16	1
2943753	99	70	63,5	cyclictest	2940035	-21	kworker/u4:5+events_unbound	07:25:01	1
2943753	99	70	37,5	cyclictest	2967301	-21	fschecks_time	08:40:19	1
2943753	99	68	62,4	cyclictest	3083167	-21	kworker/u4:4+events_unbound	11:39:04	1
2943751	99	67	52,10	cyclictest	37	-21	kcompactd0	12:00:01	0
2943753	99	66	57,7	cyclictest	2977218	-21	kworker/u4:0+events_unbound	09:18:43	1
2943751	99	66	59,5	cyclictest	3145370	-21	kworker/u4:11+events_unbound	12:25:00	0
2943751	99	64	56,6	cyclictest	3043366	-21	kworker/u4:8+events_unbound	10:38:57	0
2943753	99	63	50,9	cyclictest	37	-21	kcompactd0	10:05:33	1
2943753	99	61	48,8	cyclictest	2943748	-21	cyclictest	09:56:59	1
2943753	99	60	52,6	cyclictest	2964237	-21	kworker/u4:0+events_unbound	09:00:02	1
2943751	99	60	51,6	cyclictest	2956550	-21	kworker/u4:1+events_unbound	08:48:41	0
2943753	99	59	52,5	cyclictest	2940034	-21	kworker/u4:2+events_unbound	07:15:02	1
2943753	99	58	50,6	cyclictest	3118398	-21	kworker/u4:5+events_unbound	12:04:09	1
2943751	99	58	49,7	cyclictest	3043367	-21	kworker/u4:9+events_unbound	10:28:55	0
2943751	99	58	47,6	cyclictest	0	-21	swapper/0	10:50:32	0
2943751	99	58	43,12	cyclictest	2961671	-21	kworker/u4:3+events_unbound	09:20:12	0
2943751	99	58	36,19	cyclictest	3085520	-21	aten_r7power_vo	11:15:17	0
2943753	99	57	48,6	cyclictest	3034357	-21	kworker/u4:1+events_unbound	10:18:54	1
2943753	99	57	47,7	cyclictest	3052366	-21	kworker/u4:11+events_unbound	11:09:01	1
2943751	99	57	42,10	cyclictest	2947571	-21	modprobe	07:25:00	0
2943751	99	56	47,7	cyclictest	3038866	-21	kworker/u4:3+events_unbound	10:33:55	0
2943751	99	56	46,7	cyclictest	2964238	-21	kworker/u4:4+events_unbound	08:33:40	0
2943753	99	55	47,6	cyclictest	2970624	-21	systemd	08:53:41	1
2943753	99	55	47,5	cyclictest	3134789	-21	/usr/sbin/munin	12:10:28	1
2943751	99	55	48,5	cyclictest	3076551	-21	acpi	11:05:13	0
2943751	99	55	47,5	cyclictest	3157136	-21	switchtime	12:35:37	0
2943751	99	55	43,7	cyclictest	3043366	-21	kworker/u4:8-rpciod	10:41:09	0
2943753	99	54	47,5	cyclictest	3012607	-21	kworker/u4:7+events_unbound	10:15:00	1
2943753	99	54	47,5	cyclictest	3012607	-21	kworker/u4:7+events_unbound	10:15:00	1
2943751	99	54	47,5	cyclictest	3112621	-21	/usr/sbin/munin	11:45:28	0
2943751	99	54	35,17	cyclictest	3138465	-21	aten2__	12:15:15	0
2943751	99	54	35,17	cyclictest	3138465	-21	aten2__	12:15:15	0
2943753	99	53	46,5	cyclictest	3089846	-21	/usr/sbin/munin	11:20:16	1
2943753	99	53	45,6	cyclictest	3040154	-21	sd-accept	10:23:54	1
2943753	99	53	43,7	cyclictest	37	-21	kcompactd0	10:42:14	1
2943753	99	53	40,7	cyclictest	3122895	-21	kworker/u4:3-rpciod	12:05:19	1
2943753	99	53	40,7	cyclictest	3122895	-21	kworker/u4:3-rpciod	12:05:19	1
2943751	99	53	43,7	cyclictest	3032339	-21	apt-get	10:15:10	0
2943753	99	52	38,4	cyclictest	3136399	-21	kworker/u4:7+events_unbound	12:39:11	1
2943751	99	52	46,4	cyclictest	0	-21	swapper/0	07:10:15	0
2943751	99	52	45,5	cyclictest	2974227	-21	xargs	09:05:36	0
2943751	99	52	44,6	cyclictest	2964237	-21	kworker/u4:0+events_unbound	08:28:39	0
2943751	99	52	44,5	cyclictest	2941238	-21	kworker/u4:8+events_unbound	07:20:00	0
2943753	99	51	44,5	cyclictest	3064619	-21	unixbench_multi	10:50:45	1
2943753	99	51	44,5	cyclictest	2996733	-21	awk	09:35:00	1
2943753	99	51	41,7	cyclictest	3073357	-21	timerandwakeup	11:00:48	1
2943751	99	51	42,6	cyclictest	0	-21	swapper/0	11:50:12	0
2943751	99	51	38,9	cyclictest	3038864	-21	ssh	10:21:52	0
2943753	99	50	42,6	cyclictest	3007121	-21	unixbench_multi	09:45:41	1
2943751	99	50	42,6	cyclictest	3081466	-21	gltestperf	11:10:25	0
2943751	99	50	40,8	cyclictest	3028546	-21	/usr/sbin/munin	10:10:20	0
2943751	99	50	40,8	cyclictest	3028546	-21	/usr/sbin/munin	10:10:20	0
2943753	99	49	42,5	cyclictest	3142880	-21	/usr/sbin/munin	12:20:15	1
2943753	99	49	37,9	cyclictest	2960019	-21	ps	08:10:34	1
2943751	99	49	42,5	cyclictest	3010000	-21	idleruntime-cro	09:50:01	0
2943751	99	49	42,5	cyclictest	2981753	-21	kworker/u4:6+events_unbound	09:18:59	0
2943751	99	49	42,5	cyclictest	2975916	-21	switchtime	09:10:43	0
2943751	99	49	39,8	cyclictest	3129985	-21	fschecks_time	12:05:19	0
2943751	99	49	39,8	cyclictest	3129985	-21	fschecks_time	12:05:19	0
2943751	99	49	39,8	cyclictest	3019494	-21	fschecks_count	10:00:18	0
2943751	99	49	39,8	cyclictest	2961707	-21	cron	08:20:00	0
2943751	99	49	39,8	cyclictest	2951713	-21	aten_r7power_vo	07:40:16	0
2943753	99	48	39,7	cyclictest	2948820	-21	kworker/u4:17+events_unbound	09:23:44	1
2943753	99	48	39,6	cyclictest	3136398	-21	kworker/u4:6-rpciod	12:15:25	1
2943753	99	48	39,6	cyclictest	3136398	-21	kworker/u4:6-rpciod	12:15:25	1
2943751	99	48	41,5	cyclictest	3152871	-21	unixbench-2d	12:30:38	0
2943751	99	48	41,5	cyclictest	2997185	-21	aten_r7power_vo	09:35:18	0
2943751	99	48	41,5	cyclictest	2988890	-21	ntp_kernel_pll_	09:25:27	0
2943751	99	48	40,6	cyclictest	53	-21	kswapd0	11:30:01	0
2943751	99	48	40,6	cyclictest	2970838	-21	aten2__	08:55:15	0
2943751	99	48	40,6	cyclictest	2943748	-21	cyclictest	09:59:42	0
2943751	99	48	39,7	cyclictest	3125214	-21	aten2__	12:00:15	0
2943751	99	48	37,8	cyclictest	3107451	-21	/usr/sbin/munin	11:40:16	0
2943751	99	48	36,10	cyclictest	2948853	-21	sh	07:30:00	0
2943751	99	48	31,11	cyclictest	2955222	-21	modprobe	07:55:00	0
2943751	99	48	31,11	cyclictest	2955222	-21	modprobe	07:55:00	0
2943753	99	47	40,5	cyclictest	0	-21	swapper/1	11:40:16	1
2943753	99	47	39,6	cyclictest	3099843	-21	tail	11:30:39	1
2943753	99	47	38,7	cyclictest	3046024	-21	fschecks_time	10:30:20	1
2943753	99	47	37,8	cyclictest	2964268	-21	cron	08:30:01	1
2943753	99	47	36,8	cyclictest	2957094	-21	fschecks_time	08:00:20	1
2943753	99	47	35,7	cyclictest	0	-21	swapper/1	08:30:35	1
2943751	99	47	41,4	cyclictest	2962194	-21	fschecks_time	08:20:19	0
2943751	99	47	40,5	cyclictest	3076267	-21	dpkg	11:05:01	0
2943753	99	46	39,5	cyclictest	3043366	-21	kworker/u4:8+events_unbound	10:48:57	1
2943753	99	46	38,6	cyclictest	3148441	-21	timerwakeupswit	12:25:39	1
2943753	99	46	38,6	cyclictest	3148441	-21	timerwakeupswit	12:25:39	1
2943753	99	46	38,6	cyclictest	3041224	-21	cut	10:25:15	1
2943753	99	46	35,9	cyclictest	2989181	-21	sendmail_mailtr	09:25:38	1
2943753	99	46	34,8	cyclictest	3124953	-21	ssh	12:00:01	1
2943751	99	46	39,5	cyclictest	3096647	-21	kworker/u4:1+events_unbound	11:30:16	0
2943751	99	46	39,5	cyclictest	3059938	-21	mailstats	10:45:39	0
2943751	99	46	38,5	cyclictest	3010927	-21	/usr/sbin/munin	09:50:24	0
2943751	99	46	37,6	cyclictest	2960020	-21	grep	08:10:34	0
2943753	99	45	39,4	cyclictest	3072014	-21	latency_hist	11:00:02	1
2943753	99	45	38,5	cyclictest	3116539	-21	df_abs	11:50:17	1
2943753	99	45	38,5	cyclictest	3020373	-21	unixbench_multi	10:00:38	1
2943753	99	45	38,5	cyclictest	2997791	-21	ntpq	09:35:32	1
2943753	99	45	38,5	cyclictest	2973626	-21	fschecks_count	09:05:19	1
2943753	99	45	38,5	cyclictest	2966824	-21	munin-run	08:40:00	1
2943753	99	45	38,5	cyclictest	2962996	-21	modprobe	08:25:00	1
2943753	99	45	36,6	cyclictest	0	-21	swapper/1	09:40:25	1
2943753	99	45	36,6	cyclictest	0	-21	swapper/1	07:55:29	1
2943751	99	45	35,6	cyclictest	2965509	-21	kworker/u4:5+events_unbound	08:45:02	0
2943753	99	44	36,6	cyclictest	3112347	-21	gltestperf	11:45:20	1
2943753	99	44	35,7	cyclictest	3155789	-21	sh	12:35:00	1
2943753	99	44	35,6	cyclictest	3085055	-21	cron	11:15:00	1
2943753	99	44	35,6	cyclictest	0	-21	swapper/1	11:15:38	1
2943753	99	44	34,7	cyclictest	0	-21	swapper/1	07:35:27	1
2943753	99	44	34,7	cyclictest	0	-21	swapper/1	07:30:00	1
2943751	99	44	38,4	cyclictest	3151535	-21	ls	12:30:01	0
2943751	99	44	38,4	cyclictest	3151535	-21	ls	12:30:01	0
2943751	99	44	38,4	cyclictest	3005545	-21	ssh	09:45:00	0
2943751	99	44	24,18	cyclictest	0	-21	swapper/0	07:35:34	0
2943753	99	43	34,6	cyclictest	0	-21	swapper/1	10:35:20	1
2943751	99	43	38,3	cyclictest	2959122	-21	kworker/u4:15+events_unbound	08:08:37	0
2943751	99	43	37,4	cyclictest	3133973	-21	acpi	12:10:09	0
2943751	99	43	36,4	cyclictest	0	-21	swapper/0	08:40:00	0
2943751	99	43	35,6	cyclictest	2964237	-21	kworker/u4:0+events_unbound	08:53:42	0
2943753	99	42	36,4	cyclictest	2953960	-21	apt	07:50:00	1
2943753	99	42	34,5	cyclictest	0	-21	swapper/1	07:40:34	1
2943753	99	42	33,7	cyclictest	2961721	-21	idleruntime-cro	08:20:00	1
2943751	99	42	35,5	cyclictest	3103746	-21	sh	11:35:28	0
2943751	99	42	34,6	cyclictest	2924071	-21	kworker/u4:3+events_unbound	07:58:38	0
2943751	99	42	34,5	cyclictest	0	-21	swapper/0	11:20:19	0
2943753	99	41	34,5	cyclictest	2949673	-21	ntp_states	07:30:31	1
2943751	99	41	33,5	cyclictest	2949334	-21	fschecks_time	07:30:17	0
2943753	99	40	31,7	cyclictest	2946298	-21	munin-run	07:20:00	1
2943751	99	40	8,21	cyclictest	2943748	-21	cyclictest	07:10:00	0
2943753	99	39	29,8	cyclictest	2964238	-21	kworker/u4:4+events_unbound	08:50:01	1
2943753	99	39	27,9	cyclictest	0	-21	swapper/1	07:50:39	1
2943753	99	39	27,9	cyclictest	0	-21	swapper/1	07:50:39	1
2943753	99	38	30,6	cyclictest	0	-21	swapper/1	09:00:37	1
2943751	99	38	30,6	cyclictest	0	-21	swapper/0	09:00:15	0
2943751	99	38	29,6	cyclictest	2957044	-21	fschecks_count	08:00:20	0
2943753	99	37	28,7	cyclictest	0	-21	swapper/1	08:05:24	1
2943751	99	37	31,4	cyclictest	2953049	-21	df_abs	07:45:18	0
2943753	99	33	25,6	cyclictest	0	-21	swapper/1	07:10:01	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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