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 792 highest latencies:

System rack7slot2.osadl.org (updated Wed May 13, 2026 12:44:12)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2853097	99	109	99,7	cyclictest	2986641	-21	kworker/u4:2+events_unbound	11:25:20	1
2853096	99	104	5,20	cyclictest	2853095	-21	basename	07:10:00	0
2853097	99	98	89,7	cyclictest	2886200	-21	kworker/u4:10+events_unbound	09:34:57	1
2853097	99	97	88,5	cyclictest	2982227	-21	kworker/u4:4+events_unbound	11:05:17	1
2853097	99	92	85,5	cyclictest	2862012	-21	kworker/u4:1+events_unbound	08:54:48	1
2853097	99	88	74,5	cyclictest	2856904	-21	kworker/u4:15+events_unbound	08:09:39	1
2853097	99	84	78,4	cyclictest	2856899	-21	kworker/u4:9+events_unbound	07:39:32	1
2853097	99	83	75,6	cyclictest	2848107	-21	kworker/u4:4+events_unbound	08:24:42	1
2853096	99	82	59,18	cyclictest	53	-21	kswapd0	10:45:11	0
2853096	99	82	45,34	cyclictest	3056185	-21	kworker/u4:6+xprtiod	12:35:09	0
2853096	99	82	41,6	cyclictest	0	-21	swapper/0	12:00:31	0
2853097	99	80	65,6	cyclictest	2832385	-21	kworker/u4:12+events_unbound	08:59:47	1
2853097	99	79	72,5	cyclictest	2848107	-21	kworker/u4:4+events_unbound	08:34:42	1
2853097	99	78	71,5	cyclictest	2848107	-21	kworker/u4:4+events_unbound	08:19:40	1
2853097	99	76	63,5	cyclictest	2883816	-21	kworker/u4:6+events_unbound	09:09:51	1
2853097	99	75	67,6	cyclictest	2855592	-21	kworker/u4:8+events_unbound	07:44:33	1
2853096	99	73	37,5	cyclictest	2914893	-21	aten_r7power_po	09:45:15	0
2853096	99	73	37,4	cyclictest	2971641	-21	fschecks_time	10:50:22	0
2853096	99	72	65,4	cyclictest	256	50	irq/23-42890000.ethernet	09:30:24	0
2853096	99	72	37,7	cyclictest	2985526	-21	unixbench-2d	11:05:41	0
2853096	99	72	35,7	cyclictest	2997577	-21	aten_r7power_en	11:20:16	0
2853097	99	71	64,5	cyclictest	2851818	-21	kworker/u4:5+events_unbound	07:49:35	1
2853096	99	71	40,5	cyclictest	2989781	-21	switchtime	11:10:40	0
2853096	99	71	35,6	cyclictest	3041482	-21	fschecks_time	12:10:20	0
2853096	99	71	35,6	cyclictest	3041482	-21	fschecks_time	12:10:19	0
2853096	99	71	34,8	cyclictest	3045947	-21	fschecks_time	12:15:28	0
2853096	99	70	62,6	cyclictest	2934287	-21	kworker/u4:2+events_unbound	11:00:16	0
2853096	99	70	35,6	cyclictest	3011816	-21	unixbench-2d	11:35:40	0
2853096	99	68	31,7	cyclictest	2876136	-21	kworker/u4:2-rpciod	08:50:20	0
2853097	99	67	60,5	cyclictest	2864636	-21	kworker/u4:6+events_unbound	07:54:35	1
2853097	99	67	45,8	cyclictest	3008238	-21	kworker/u4:15+events_unbound	11:35:01	1
2853097	99	65	59,4	cyclictest	2865907	-21	kworker/u4:16+events_unbound	08:04:38	1
2853096	99	64	48,6	cyclictest	0	-21	swapper/0	07:45:10	0
2853097	99	63	56,5	cyclictest	2876136	-21	kworker/u4:2+events_unbound	09:00:01	1
2853097	99	63	44,6	cyclictest	2938058	-21	kworker/u4:6+events_unbound	10:20:59	1
2853096	99	63	46,12	cyclictest	3019294	-21	/usr/sbin/munin	11:45:15	0
2853096	99	62	30,4	cyclictest	2848107	-21	kworker/u4:4-rpciod	09:10:15	0
2853097	99	61	52,6	cyclictest	53	-21	kswapd0	09:50:02	1
2853096	99	61	51,6	cyclictest	2931968	-21	latency_hist	10:05:02	0
2853097	99	60	53,5	cyclictest	2938691	-21	kworker/u4:8+events_unbound	10:35:08	1
2853097	99	58	4,36	cyclictest	2966944	-21	ssh	10:45:14	1
2853097	99	58	36,7	cyclictest	2960693	-21	kworker/u4:6+events_unbound	10:40:36	1
2853097	99	57	46,8	cyclictest	53	-21	kswapd0	10:20:01	1
2853097	99	57	46,8	cyclictest	53	-21	kswapd0	10:20:00	1
2853096	99	57	46,7	cyclictest	3001991	-21	aten_r7power_po	11:25:15	0
2853097	99	56	49,5	cyclictest	37	-21	kcompactd0	11:50:20	1
2853096	99	56	49,5	cyclictest	2993353	-21	sshd	11:15:18	0
2853096	99	56	49,5	cyclictest	2941752	-21	/usr/sbin/munin	10:15:37	0
2853096	99	56	49,5	cyclictest	2941752	-21	/usr/sbin/munin	10:15:36	0
2853096	99	56	48,6	cyclictest	3025928	-21	kworker/u4:7+events_unbound	11:56:59	0
2853096	99	56	44,10	cyclictest	0	-21	swapper/0	12:30:11	0
2853096	99	56	38,15	cyclictest	3040936	-21	ssh	12:10:02	0
2853097	99	55	43,10	cyclictest	0	-21	swapper/1	10:25:15	1
2853097	99	55	39,7	cyclictest	2850583	-21	kworker/u4:0+events_unbound	07:12:01	1
2853097	99	54	47,6	cyclictest	3021545	-21	kworker/u4:2+events_unbound	11:49:58	1
2853097	99	54	46,6	cyclictest	3056181	-21	kworker/u4:2+events_unbound	12:30:35	1
2853097	99	54	45,5	cyclictest	2936702	-21	/usr/sbin/munin	10:10:16	1
2853096	99	54	49,3	cyclictest	3043062	-21	kworker/u4:14+events_unbound	12:25:34	0
2853096	99	54	49,3	cyclictest	2943084	-21	kworker/u4:4+events_unbound	10:25:01	0
2853096	99	54	44,8	cyclictest	378	-21	dbus-daemon	10:30:07	0
2853096	99	54	31,15	cyclictest	2893041	-21	ssh	09:20:10	0
2853097	99	53	46,5	cyclictest	3043706	-21	kworker/u4:15+events_unbound	12:19:00	1
2853097	99	53	45,6	cyclictest	2951932	-21	kworker/u4:15+events_unbound	10:30:41	1
2853097	99	53	36,7	cyclictest	2886200	-21	kworker/u4:10+events_unbound	10:03:51	1
2853096	99	53	45,5	cyclictest	0	-21	swapper/0	09:50:09	0
2853097	99	52	46,5	cyclictest	3030359	-21	kworker/u4:10+events_unbound	12:01:00	1
2853097	99	52	46,4	cyclictest	2929879	-21	kworker/u4:14+events_unbound	11:25:02	1
2853097	99	52	46,4	cyclictest	2899546	-21	kworker/u4:13+events_unbound	09:28:00	1
2853097	99	52	46,4	cyclictest	2899546	-21	kworker/u4:13+events_unbound	09:27:59	1
2853097	99	52	44,4	cyclictest	2993588	-21	/usr/sbin/munin	11:15:19	1
2853097	99	52	36,8	cyclictest	2908373	-21	kworker/u4:3+events_unbound	09:44:30	1
2853096	99	52	45,4	cyclictest	2892767	-21	sh	09:20:01	0
2853096	99	52	45,4	cyclictest	2892767	-21	sh	09:20:01	0
2853096	99	52	31,17	cyclictest	2871080	-21	sendmail	08:20:00	0
2853096	99	52	29,21	cyclictest	2946502	-21	unixbench_multi	10:20:44	0
2853097	99	51	44,5	cyclictest	3054815	-21	ntp_offset	12:25:29	1
2853096	99	51	44,5	cyclictest	2976789	-21	grep	10:55:40	0
2853096	99	51	43,6	cyclictest	0	-21	swapper/0	11:40:19	0
2853096	99	51	43,6	cyclictest	0	-21	swapper/0	11:40:18	0
2853097	99	50	43,5	cyclictest	2872327	-21	kworker/u4:3+events_unbound	08:35:04	1
2853097	99	50	42,6	cyclictest	2982230	-21	kworker/u4:7+events_unbound	11:04:00	1
2853097	99	50	41,6	cyclictest	0	-21	swapper/1	11:40:23	1
2853097	99	50	41,6	cyclictest	0	-21	swapper/1	11:40:22	1
2853097	99	50	40,8	cyclictest	2933091	-21	/usr/sbin/munin	10:05:36	1
2853097	99	50	40,8	cyclictest	2933091	-21	/usr/sbin/munin	10:05:36	1
2853097	99	50	39,8	cyclictest	37	-21	kcompactd0	12:10:16	1
2853097	99	50	39,8	cyclictest	37	-21	kcompactd0	12:10:15	1
2853096	99	50	44,4	cyclictest	2850583	-21	kworker/u4:0+events_unbound	07:29:29	0
2853096	99	50	39,9	cyclictest	3050571	-21	ntpq	12:20:30	0
2853097	99	49	41,5	cyclictest	0	-21	swapper/1	12:05:21	1
2853097	99	49	40,6	cyclictest	0	-21	swapper/1	10:50:15	1
2853097	99	49	31,5	cyclictest	2925449	-21	kworker/u4:13+events_unbound	09:56:44	1
2853096	99	49	43,4	cyclictest	2911726	-21	unixbench_singl	09:40:41	0
2853096	99	49	41,5	cyclictest	3023679	-21	ssh	11:50:11	0
2853096	99	49	40,6	cyclictest	2862153	-21	latency_hist	07:45:01	0
2853096	99	49	31,16	cyclictest	2855647	-21	munin-plugin-st	07:20:01	0
2853097	99	48	40,6	cyclictest	2892966	-21	apt-key	09:20:03	1
2853096	99	48	42,4	cyclictest	2927559	-21	sendmail-mta	10:00:01	0
2853096	99	48	41,5	cyclictest	2936299	-21	sshd	10:10:02	0
2853096	99	48	41,5	cyclictest	2936299	-21	sshd	10:10:01	0
2853096	99	48	40,5	cyclictest	3008234	-21	ssh	11:31:44	0
2853097	99	47	41,5	cyclictest	2856899	-21	kworker/u4:9+events_unbound	07:25:01	1
2853097	99	47	40,5	cyclictest	3050553	-21	ld	12:20:29	1
2853097	99	47	40,5	cyclictest	3000010	-21	kworker/u4:0+events_unbound	11:55:58	1
2853097	99	47	40,5	cyclictest	2976739	-21	timerwakeupswit	10:55:41	1
2853096	99	47	39,5	cyclictest	0	-21	swapper/0	10:35:38	0
2853097	99	46	36,7	cyclictest	3011667	-21	switchtime	11:35:39	1
2853097	99	46	34,4	cyclictest	2848107	-21	kworker/u4:4+events_unbound	08:40:05	1
2853097	99	46	24,9	cyclictest	2943083	-21	kworker/u4:1+rpciod	11:15:01	1
2853096	99	46	42,2	cyclictest	2855591	-21	kworker/u4:7+events_unbound	07:55:01	0
2853096	99	46	38,6	cyclictest	2873881	-21	aten_r7power_en	08:30:16	0
2853097	99	45	39,4	cyclictest	1062	-21	lldpd	09:35:08	1
2853097	99	45	38,5	cyclictest	2886200	-21	kworker/u4:10+events_unbound	09:24:54	1
2853097	99	45	37,6	cyclictest	3063872	-21	timerwakeupswit	12:35:44	1
2853097	99	45	36,7	cyclictest	2888739	-21	aten_r7power_po	09:15:18	1
2853097	99	45	36,7	cyclictest	2884975	-21	ntp_offset	09:10:31	1
2853096	99	45	39,4	cyclictest	0	-21	swapper/0	09:35:35	0
2853096	99	45	38,5	cyclictest	2963580	-21	cat	10:40:37	0
2853096	99	45	38,5	cyclictest	2876136	-21	kworker/u4:2+events_unbound	09:04:48	0
2853096	99	45	37,5	cyclictest	2832385	-21	kworker/u4:12+events_unbound	07:35:02	0
2853096	99	45	36,6	cyclictest	2871282	-21	aten2__	08:20:15	0
2853097	99	44	37,5	cyclictest	2916600	-21	kworker/u4:9+events_unbound	09:55:00	1
2853097	99	44	36,5	cyclictest	2873269	-21	sendmail_mailqu	08:25:35	1
2853096	99	44	38,4	cyclictest	2869755	-21	systemd	08:14:38	0
2853096	99	44	37,5	cyclictest	2936522	-21	aten2__	10:10:14	0
2853096	99	44	36,6	cyclictest	2877981	-21	fschecks_time	08:45:19	0
2853096	99	44	36,6	cyclictest	2859969	-21	fschecks_time	07:35:19	0
2853096	99	44	35,7	cyclictest	2855948	-21	aten_r7power_vo	07:20:16	0
2853096	99	44	24,16	cyclictest	2873709	-21	latency_hist	08:30:01	0
2853097	99	43	30,5	cyclictest	2869744	-21	kworker/u4:5+events_unbound	08:12:02	1
2853096	99	43	39,2	cyclictest	0	-21	swapper/0	09:25:26	0
2853096	99	43	39,2	cyclictest	0	-21	swapper/0	09:25:26	0
2853096	99	43	36,5	cyclictest	2883727	-21	unixbench_multi	09:05:36	0
2853096	99	43	35,6	cyclictest	2864936	-21	aten_r7power_po	07:55:16	0
2853096	99	43	35,6	cyclictest	2862012	-21	kworker/u4:1+events_unbound	08:44:44	0
2853096	99	43	34,7	cyclictest	2868275	-21	timerandwakeup	08:05:35	0
2853097	99	42	32,7	cyclictest	2859402	-21	unixbench_singl	07:30:39	1
2853097	99	41	31,8	cyclictest	2856845	-21	unixbench_singl	07:20:40	1
2853097	99	40	33,5	cyclictest	2865918	-21	systemd	07:59:34	1
2853096	99	40	30,8	cyclictest	2866300	-21	cpu	08:00:17	0
2853097	99	38	29,7	cyclictest	2854881	-21	gltestperf	07:15:20	1
2853096	99	38	32,4	cyclictest	2832385	-21	kworker/u4:12-rpciod	07:15:02	0
2853096	99	38	31,4	cyclictest	0	-21	swapper/0	09:00:00	0
2853097	99	37	18,5	cyclictest	17	1	rcu_preempt	08:45:33	1
2853096	99	36	29,5	cyclictest	2875359	-21	grep	08:35:17	0
2853097	99	34	24,6	cyclictest	2853183	-21	latency_hist	07:10:02	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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