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 Tue Dec 23, 2025 12:44:11)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2349432	99	180	151,25	cyclictest	53	-21	kswapd0	11:15:11	0
2349432	99	180	151,25	cyclictest	53	-21	kswapd0	11:15:10	0
2349432	99	105	97,6	cyclictest	2521919	-21	kworker/u4:5+events_unbound	12:01:33	0
2349432	99	94	86,6	cyclictest	2437791	-21	kworker/u4:0+events_unbound	10:26:11	0
2349432	99	92	79,5	cyclictest	2538761	-21	kworker/u4:14+events_unbound	12:26:37	0
2349432	99	91	82,7	cyclictest	2373762	-21	kworker/u4:10+events_unbound	08:50:53	0
2349434	99	90	83,5	cyclictest	2363544	-21	kworker/u4:16+events_unbound	08:10:45	1
2349432	99	87	79,6	cyclictest	2372467	-21	kworker/u4:3+events_unbound	10:21:10	0
2349432	99	84	77,5	cyclictest	2371198	-21	kworker/u4:4+events_unbound	08:40:50	0
2349432	99	81	68,11	cyclictest	2354512	-21	kworker/u4:7+events_unbound	08:17:00	0
2349432	99	80	63,15	cyclictest	2349431	-21	cyclictest	11:30:11	0
2349432	99	79	72,5	cyclictest	2373762	-21	kworker/u4:10+events_unbound	08:45:52	0
2349432	99	75	68,5	cyclictest	2351946	-21	kworker/u4:2+events_unbound	09:26:00	0
2349432	99	68	61,5	cyclictest	2360977	-21	kworker/u4:1+events_unbound	07:55:42	0
2349432	99	66	49,12	cyclictest	2419172	-21	fschecks_count	09:55:20	0
2349432	99	66	45,14	cyclictest	0	-21	swapper/0	11:25:07	0
2349432	99	64	48,6	cyclictest	2513454	-21	kworker/u4:1+events_unbound	11:49:43	0
2349434	99	62	55,5	cyclictest	2387285	-21	kworker/u4:4+events_unbound	09:30:01	1
2349432	99	62	47,6	cyclictest	2542406	-21	kworker/u4:15+events_unbound	12:23:59	0
2349434	99	60	48,7	cyclictest	0	-21	swapper/1	12:30:39	1
2349434	99	60	46,7	cyclictest	2377576	-21	kworker/u4:12+events_unbound	09:18:01	1
2349432	99	60	53,5	cyclictest	2360977	-21	kworker/u4:1+events_unbound	09:05:57	0
2349432	99	60	34,19	cyclictest	53	-21	kswapd0	12:15:09	0
2349432	99	59	40,6	cyclictest	2377576	-21	kworker/u4:12+events_unbound	09:19:00	0
2349434	99	58	51,5	cyclictest	2461770	-21	sh	10:45:33	1
2349434	99	58	44,9	cyclictest	37	-21	kcompactd0	10:21:42	1
2349432	99	58	51,5	cyclictest	2351946	-21	kworker/u4:2+events_unbound	08:55:53	0
2349434	99	57	48,6	cyclictest	2508214	-21	switchtime	11:40:40	1
2349434	99	57	45,9	cyclictest	2377321	-21	switchtime	08:55:36	1
2349434	99	57	39,11	cyclictest	2345718	-21	kworker/u4:4+events_unbound	07:21:45	1
2349432	99	57	48,6	cyclictest	2397826	-21	aten_r7power_vo	09:30:19	0
2349432	99	57	46,9	cyclictest	2436616	-21	open_inodes	10:15:37	0
2349432	99	57	45,9	cyclictest	2458504	-21	sh	10:41:23	0
2349434	99	56	43,10	cyclictest	53	-21	kswapd0	10:05:33	1
2349434	99	56	37,10	cyclictest	0	-21	swapper/1	07:40:00	1
2349434	99	56	22,20	cyclictest	0	-21	swapper/1	11:30:38	1
2349432	99	56	48,6	cyclictest	2546600	-21	kworker/u4:1+events_unbound	12:32:47	0
2349432	99	56	35,19	cyclictest	2360222	-21	fschecks_time	07:50:19	0
2349432	99	55	48,5	cyclictest	2500638	-21	kworker/u4:13+events_unbound	11:41:40	0
2349432	99	55	48,5	cyclictest	2462825	-21	kworker/u4:2+events_unbound	11:14:59	0
2349432	99	55	48,5	cyclictest	2462825	-21	kworker/u4:2+events_unbound	11:14:58	0
2349432	99	55	47,6	cyclictest	2412678	-21	kworker/u4:0+events_unbound	09:50:02	0
2349432	99	55	30,22	cyclictest	0	-21	swapper/0	11:50:39	0
2349434	99	54	45,6	cyclictest	2473082	-21	sendmail	11:00:01	1
2349434	99	54	45,6	cyclictest	2420064	-21	unixbench-2d	09:55:40	1
2349434	99	53	43,7	cyclictest	0	-21	swapper/1	07:55:35	1
2349434	99	53	38,10	cyclictest	2468922	-21	modprobe	10:55:00	1
2349432	99	53	46,5	cyclictest	2462825	-21	kworker/u4:2+events_unbound	10:50:42	0
2349432	99	53	46,4	cyclictest	0	-21	swapper/0	12:09:59	0
2349432	99	53	45,6	cyclictest	2517694	-21	kworker/u4:2+events_unbound	11:59:25	0
2349432	99	53	45,6	cyclictest	2358438	-21	kworker/u4:8+events_unbound	08:30:47	0
2349432	99	53	42,8	cyclictest	2387285	-21	kworker/u4:4+rpciod	09:35:28	0
2349432	99	53	25,11	cyclictest	2553263	-21	fschecks_time	12:35:22	0
2349432	99	53	25,11	cyclictest	2553263	-21	fschecks_time	12:35:21	0
2349434	99	52	45,5	cyclictest	2437792	-21	kworker/u4:1+events_unbound	10:32:59	1
2349434	99	52	36,6	cyclictest	2354514	-21	kworker/u4:9+events_unbound	07:52:02	1
2349432	99	52	44,6	cyclictest	2364838	-21	cron	08:10:00	0
2349434	99	51	44,5	cyclictest	2378868	-21	kworker/u4:14+events_unbound	10:01:06	1
2349434	99	51	41,7	cyclictest	1056	-21	lldpd	10:16:26	1
2349434	99	51	35,6	cyclictest	2373767	-21	kworker/u4:11+events_unbound	08:54:44	1
2349432	99	51	43,6	cyclictest	2349431	-21	cyclictest	12:10:34	0
2349432	99	51	32,17	cyclictest	2407152	-21	gcc	09:40:43	0
2349434	99	50	42,6	cyclictest	2373767	-21	kworker/u4:11+events_unbound	09:01:01	1
2349434	99	50	41,6	cyclictest	2410706	-21	grep	09:45:18	1
2349434	99	50	41,6	cyclictest	0	-21	swapper/1	11:50:14	1
2349434	99	50	37,7	cyclictest	0	-21	swapper/1	10:10:33	1
2349434	99	50	25,15	cyclictest	473	-21	weston-desktop-	09:43:58	1
2349432	99	50	39,8	cyclictest	2412680	-21	kworker/u4:2+rpciod	09:50:01	0
2349432	99	50	29,6	cyclictest	0	-21	swapper/0	07:35:20	0
2349434	99	49	40,7	cyclictest	2378868	-21	kworker/u4:14+events_unbound	09:20:59	1
2349434	99	49	39,7	cyclictest	2528350	-21	fschecks_count	12:05:19	1
2349434	99	49	39,7	cyclictest	0	-21	swapper/1	09:50:11	1
2349434	99	49	39,6	cyclictest	2358260	-21	timerwakeupswit	07:40:41	1
2349434	99	49	38,8	cyclictest	37	-21	kcompactd0	11:25:02	1
2349432	99	49	4,37	cyclictest	2357337	-21	/usr/sbin/munin	07:40:11	0
2349432	99	49	42,5	cyclictest	2101286	-21	kworker/u4:0+events_unbound	07:10:58	0
2349432	99	49	41,6	cyclictest	2478868	-21	unixbench_singl	11:05:39	0
2349432	99	49	35,12	cyclictest	2390045	-21	mailstats	09:20:38	0
2349434	99	48	38,8	cyclictest	2532716	-21	/usr/sbin/munin	12:10:22	1
2349434	99	48	38,7	cyclictest	2526141	-21	kworker/u4:11+events_unbound	12:16:37	1
2349434	99	48	35,11	cyclictest	0	-21	swapper/1	11:00:16	1
2349434	99	48	34,8	cyclictest	0	-21	swapper/1	11:10:27	1
2349434	99	48	34,8	cyclictest	0	-21	swapper/1	11:10:27	1
2349432	99	48	41,5	cyclictest	2503919	-21	sendmail_mailqu	11:35:41	0
2349432	99	48	28,17	cyclictest	0	-21	swapper/0	11:20:34	0
2349432	99	48	24,13	cyclictest	2433529	-21	kworker/u4:10+events_unbound	10:14:38	0
2349434	99	47	4,32	cyclictest	2486916	-21	ssh	11:15:40	1
2349434	99	47	4,32	cyclictest	2486916	-21	ssh	11:15:40	1
2349434	99	47	40,5	cyclictest	2491017	-21	ld	11:20:31	1
2349434	99	47	34,10	cyclictest	26	1	rcuc/1	07:25:12	1
2349434	99	47	33,8	cyclictest	0	-21	swapper/1	11:35:30	1
2349434	99	47	32,11	cyclictest	2367153	-21	sort	08:15:36	1
2349434	99	47	16,5	cyclictest	27	1	ktimers/1	09:30:35	1
2349434	99	47	15,5	cyclictest	27	1	ktimers/1	12:00:26	1
2349432	99	47	40,5	cyclictest	2378868	-21	kworker/u4:14+events_unbound	09:14:00	0
2349432	99	47	40,5	cyclictest	2378868	-21	kworker/u4:14+events_unbound	09:13:59	0
2349434	99	46	39,5	cyclictest	2452506	-21	apt-get	10:35:12	1
2349434	99	46	38,6	cyclictest	2373762	-21	kworker/u4:10+events_unbound	08:46:06	1
2349434	99	46	38,5	cyclictest	2444217	-21	wget	10:25:17	1
2349434	99	46	36,7	cyclictest	2512253	-21	proc_pri	11:45:37	1
2349434	99	46	30,11	cyclictest	0	-21	swapper/1	08:35:24	1
2349432	99	46	40,4	cyclictest	2355351	-21	sshd	07:30:32	0
2349432	99	46	37,6	cyclictest	0	-21	swapper/0	10:45:25	0
2349432	99	46	24,6	cyclictest	17	1	rcu_preempt	10:00:28	0
2349434	99	45	37,6	cyclictest	2540749	-21	fschecks_count	12:20:17	1
2349434	99	45	35,7	cyclictest	0	-21	swapper/1	07:15:28	1
2349434	99	45	34,7	cyclictest	0	-21	swapper/1	10:40:29	1
2349434	99	45	31,11	cyclictest	0	-21	swapper/1	08:25:19	1
2349434	99	45	14,6	cyclictest	27	1	ktimers/1	11:05:16	1
2349434	99	45	13,6	cyclictest	27	1	ktimers/1	11:55:24	1
2349434	99	45	13,6	cyclictest	27	1	ktimers/1	09:10:21	1
2349434	99	45	13,6	cyclictest	27	1	ktimers/1	09:10:21	1
2349432	99	45	38,5	cyclictest	2427382	-21	cut	10:05:16	0
2349432	99	45	34,9	cyclictest	2362851	-21	tail	08:00:18	0
2349432	99	45	34,8	cyclictest	0	-21	swapper/0	11:00:18	0
2349434	99	44	37,5	cyclictest	2350716	-21	latency_hist	07:15:01	1
2349434	99	44	36,6	cyclictest	2340635	-21	kworker/u4:13+events_unbound	07:35:01	1
2349434	99	44	35,6	cyclictest	2401973	-21	aten2__	09:35:18	1
2349434	99	44	14,4	cyclictest	27	1	ktimers/1	12:35:26	1
2349434	99	44	14,4	cyclictest	27	1	ktimers/1	12:35:26	1
2349432	99	44	36,6	cyclictest	2367689	-21	aten_r7power_po	08:20:16	0
2349432	99	44	36,6	cyclictest	2350664	-21	kworker/u4:11+events_unbound	07:17:01	0
2349432	99	44	35,7	cyclictest	2368868	-21	aten2__	08:25:16	0
2349434	99	43	36,5	cyclictest	2340635	-21	kworker/u4:13+events_unbound	07:46:01	1
2349434	99	43	34,5	cyclictest	0	-21	swapper/1	09:05:27	1
2349432	99	43	36,5	cyclictest	2469834	-21	/usr/sbin/munin	10:55:24	0
2349432	99	43	35,6	cyclictest	2371198	-21	kworker/u4:4+events_unbound	08:37:01	0
2349432	99	43	34,7	cyclictest	2358986	-21	gltestperf	07:45:20	0
2349432	99	43	34,6	cyclictest	2449464	-21	timerwakeupswit	10:30:38	0
2349432	99	43	31,8	cyclictest	2452920	-21	fschecks_time	10:35:20	0
2349434	99	42	33,6	cyclictest	0	-21	swapper/1	12:25:19	1
2349434	99	42	31,6	cyclictest	0	-21	swapper/1	08:20:38	1
2349432	99	42	33,6	cyclictest	2358438	-21	kworker/u4:8+rpciod	08:15:01	0
2349434	99	41	36,4	cyclictest	2346928	-21	kworker/u4:6+events_unbound	08:34:00	1
2349434	99	41	32,6	cyclictest	2372469	-21	kworker/u4:7-rpciod	08:40:20	1
2349432	99	41	6,24	cyclictest	17	1	rcu_preempt	07:25:31	0
2349432	99	40	32,6	cyclictest	2352169	-21	aten2__	07:20:16	0
2349434	99	39	28,8	cyclictest	0	-21	swapper/1	08:05:00	1
2349434	99	39	27,8	cyclictest	0	-21	swapper/1	08:05:38	1
2349432	99	38	4,5	cyclictest	14	-21	ksoftirqd/0	09:00:26	0
2349432	99	37	28,6	cyclictest	2346931	-21	kworker/u4:9+rpciod	07:10:01	0
2349434	99	32	8,12	cyclictest	26	1	rcuc/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