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 Sun Apr 12, 2026 00:44:12)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2295923	99	120	105,7	cyclictest	2329319	-21	kworker/u4:14+events_unbound	21:42:56	1
2295922	99	111	101,8	cyclictest	2416312	-21	kworker/u4:7+events_unbound	22:58:08	0
2295923	99	109	100,7	cyclictest	2429477	-21	kworker/u4:3+events_unbound	23:08:11	1
2295923	99	108	94,6	cyclictest	2464042	-21	kworker/u4:8+events_unbound	23:58:18	1
2295923	99	107	91,6	cyclictest	2351446	-21	kworker/u4:1+events_unbound	21:37:54	1
2295923	99	100	83,6	cyclictest	2390519	-21	kworker/u4:10+events_unbound	22:43:07	1
2295923	99	100	83,6	cyclictest	2390519	-21	kworker/u4:10+events_unbound	22:43:07	1
2295923	99	96	88,6	cyclictest	2297232	-21	kworker/u4:10+events_unbound	20:17:40	1
2295923	99	96	88,6	cyclictest	2297232	-21	kworker/u4:10+events_unbound	20:17:39	1
2295923	99	96	87,7	cyclictest	2476649	-21	kworker/u4:11+events_unbound	00:08:19	1
2295922	99	96	86,7	cyclictest	2437634	-21	kworker/u4:7+events_unbound	23:20:12	0
2295923	99	92	83,6	cyclictest	2503234	-21	kworker/u4:4+events_unbound	00:38:25	1
2295923	99	91	83,6	cyclictest	2459649	-21	kworker/u4:2+events_unbound	23:43:14	1
2295923	99	91	83,6	cyclictest	2381664	-21	kworker/u4:3+events_unbound	22:13:00	1
2295923	99	91	82,7	cyclictest	2377259	-21	kworker/u4:9+events_unbound	22:28:03	1
2295923	99	86	79,5	cyclictest	2442065	-21	kworker/u4:8+events_unbound	23:28:13	1
2295923	99	86	78,6	cyclictest	2394936	-21	kworker/u4:12+events_unbound	22:38:06	1
2295923	99	82	75,5	cyclictest	2310121	-21	kworker/u4:0+events_unbound	20:12:38	1
2295923	99	82	74,6	cyclictest	2411920	-21	kworker/u4:1+events_unbound	22:53:07	1
2295923	99	79	71,6	cyclictest	2316521	-21	kworker/u4:17+events_unbound	20:32:42	1
2295922	99	73	49,20	cyclictest	2295919	-21	awk	19:10:01	0
2295922	99	70	63,5	cyclictest	2351446	-21	kworker/u4:1+events_unbound	21:50:01	0
2295922	99	70	63,5	cyclictest	2351446	-21	kworker/u4:1+events_unbound	21:50:00	0
2295922	99	70	35,31	cyclictest	256	50	irq/23-42890000.ethernet	21:20:12	0
2295923	99	67	61,4	cyclictest	2317876	-21	kworker/u4:0+events_unbound	20:40:02	1
2295923	99	67	48,13	cyclictest	0	-21	swapper/1	00:15:30	1
2295923	99	67	48,13	cyclictest	0	-21	swapper/1	00:15:30	1
2295922	99	67	23,38	cyclictest	0	-21	swapper/0	21:25:11	0
2295923	99	64	57,5	cyclictest	2320450	-21	kworker/u4:12+events_unbound	21:07:50	1
2295923	99	64	57,5	cyclictest	2320450	-21	kworker/u4:12+events_unbound	21:07:50	1
2295922	99	64	57,5	cyclictest	2386072	-21	kworker/u4:7+events_unbound	22:35:37	0
2295923	99	63	55,6	cyclictest	2425095	-21	kworker/u4:13+events_unbound	23:03:38	1
2295923	99	63	53,4	cyclictest	2494385	-21	kworker/u4:6+events_unbound	00:30:01	1
2295922	99	63	56,5	cyclictest	2297232	-21	kworker/u4:10+events_unbound	19:57:36	0
2295922	99	63	54,5	cyclictest	0	-21	swapper/0	00:05:23	0
2295922	99	63	49,12	cyclictest	2310125	-21	kworker/u4:6+events_unbound	20:25:00	0
2295923	99	61	54,6	cyclictest	2293408	-21	kworker/u4:0+events_unbound	19:32:33	1
2295923	99	61	53,6	cyclictest	2304925	-21	kworker/u4:17+events_unbound	19:42:33	1
2295923	99	61	44,7	cyclictest	2464042	-21	kworker/u4:8+events_unbound	23:54:59	1
2295922	99	61	13,43	cyclictest	2375049	-21	apt-get	22:05:16	0
2295923	99	60	54,5	cyclictest	2297232	-21	kworker/u4:10+events_unbound	19:47:34	1
2295923	99	60	48,5	cyclictest	2310125	-21	kworker/u4:6+events_unbound	20:05:02	1
2295923	99	59	51,6	cyclictest	2310124	-21	kworker/u4:5+events_unbound	20:27:39	1
2295923	99	59	45,7	cyclictest	2411920	-21	kworker/u4:1+events_unbound	22:55:20	1
2295922	99	59	54,3	cyclictest	2297231	-21	kworker/u4:7+events_unbound	19:22:32	0
2295922	99	59	51,6	cyclictest	2310125	-21	kworker/u4:6+events_unbound	20:02:37	0
2295923	99	58	50,6	cyclictest	2293414	-21	kworker/u4:8+events_unbound	19:12:29	1
2295922	99	58	50,6	cyclictest	2420706	-21	kworker/u4:9+events_unbound	23:13:10	0
2295923	99	57	47,6	cyclictest	2475379	-21	ld	00:00:28	1
2295923	99	57	45,7	cyclictest	2351446	-21	kworker/u4:1+events_unbound	21:48:59	1
2295923	99	57	45,7	cyclictest	2351446	-21	kworker/u4:1+events_unbound	21:48:59	1
2295922	99	57	50,5	cyclictest	2505966	-21	/usr/sbin/munin	00:35:30	0
2295923	99	56	41,9	cyclictest	2344341	-21	modprobe	21:30:01	1
2295923	99	56	40,6	cyclictest	2485484	-21	kworker/u4:10+events_unbound	00:12:00	1
2295923	99	55	49,5	cyclictest	2319151	-21	kworker/u4:9+events_unbound	20:55:01	1
2295922	99	55	46,7	cyclictest	53	-21	kswapd0	22:00:00	0
2295922	99	55	34,19	cyclictest	2475919	-21	unixbench_multi	00:00:41	0
2295922	99	55	33,20	cyclictest	2414301	-21	df_abs	22:50:17	0
2295923	99	54	44,7	cyclictest	2384839	-21	timerwakeupswit	22:15:39	1
2295922	99	54	46,6	cyclictest	2310125	-21	kworker/u4:6+events_unbound	20:57:45	0
2295923	99	53	46,4	cyclictest	2325558	-21	kworker/u4:1+events_unbound	21:05:01	1
2295922	99	53	48,4	cyclictest	2411919	-21	kworker/u4:0+events_unbound	22:50:01	0
2295922	99	53	44,7	cyclictest	2311398	-21	kworker/u4:3+events_unbound	20:07:37	0
2295922	99	53	1,43	cyclictest	2500788	-21	rm	00:30:10	0
2295923	99	52	37,6	cyclictest	2364044	-21	kworker/u4:16+events_unbound	21:52:43	1
2295922	99	52	47,3	cyclictest	2485478	-21	kworker/u4:1+events_unbound	00:13:37	0
2295922	99	52	46,4	cyclictest	2497315	-21	gcc	00:25:34	0
2295923	99	51	4,34	cyclictest	2375997	-21	ssh	22:05:39	1
2295923	99	51	36,6	cyclictest	2425095	-21	kworker/u4:13+events_unbound	23:12:59	1
2295922	99	51	44,5	cyclictest	2453024	-21	/usr/sbin/munin	23:35:15	0
2295922	99	51	44,5	cyclictest	2436297	-21	ntp_kernel_err	23:15:24	0
2295922	99	51	44,5	cyclictest	2377255	-21	kworker/u4:0+events_unbound	22:33:04	0
2295922	99	51	43,6	cyclictest	0	-21	swapper/0	00:15:27	0
2295922	99	51	43,6	cyclictest	0	-21	swapper/0	00:15:26	0
2295923	99	50	43,5	cyclictest	2449846	-21	grep	23:30:39	1
2295923	99	50	43,5	cyclictest	2377255	-21	kworker/u4:0+events_unbound	22:24:01	1
2295923	99	50	40,8	cyclictest	2333768	-21	kworker/u4:2+events_unbound	21:22:51	1
2295923	99	49	43,4	cyclictest	2437634	-21	kworker/u4:7+events_unbound	23:20:00	1
2295923	99	49	42,5	cyclictest	2440154	-21	aten_r7power_po	23:20:17	1
2295923	99	49	41,6	cyclictest	0	-21	swapper/1	22:30:28	1
2295923	99	49	39,7	cyclictest	2457030	-21	sendmail-msp	23:40:01	1
2295922	99	49	41,5	cyclictest	2406255	-21	ld	22:40:32	0
2295922	99	49	41,5	cyclictest	2406255	-21	ld	22:40:32	0
2295922	99	49	28,18	cyclictest	0	-21	swapper/0	19:19:59	0
2295923	99	48	41,5	cyclictest	2493061	-21	sendmail_mailqu	00:20:35	1
2295923	99	48	41,5	cyclictest	2327201	-21	/usr/sbin/munin	21:10:14	1
2295923	99	48	40,6	cyclictest	2368432	-21	kworker/u4:4+events_unbound	21:57:57	1
2295923	99	48	31,7	cyclictest	2481057	-21	kworker/u4:7+events_unbound	00:28:00	1
2295922	99	48	41,5	cyclictest	2470721	-21	fschecks_time	23:55:21	0
2295922	99	48	40,5	cyclictest	2310125	-21	kworker/u4:6+events_unbound	20:47:42	0
2295922	99	48	39,7	cyclictest	2371122	-21	gltestperf	22:00:20	0
2295923	99	47	40,5	cyclictest	2321391	-21	sendmail_mailqu	20:45:37	1
2295923	99	47	40,5	cyclictest	2297232	-21	kworker/u4:10+events_unbound	19:57:01	1
2295923	99	47	33,7	cyclictest	2308779	-21	apt-get	20:00:11	1
2295923	99	47	27,8	cyclictest	2459650	-21	kworker/u4:3+events_unbound	23:49:30	1
2295922	99	47	40,5	cyclictest	2466686	-21	ntpq	23:50:28	0
2295922	99	47	40,5	cyclictest	2425095	-21	kworker/u4:13+events_unbound	23:25:03	0
2295922	99	47	40,5	cyclictest	2349354	-21	fschecks_time	21:35:20	0
2295922	99	47	38,7	cyclictest	2492327	-21	/usr/sbin/munin	00:20:15	0
2295922	99	47	37,8	cyclictest	2462895	-21	unixbench_singl	23:45:39	0
2295922	99	47	34,8	cyclictest	0	-21	swapper/0	19:10:40	0
2295923	99	46	40,4	cyclictest	2374766	-21	modprobe	22:05:00	1
2295923	99	46	39,5	cyclictest	2344713	-21	aten_r7power_cu	21:30:16	1
2295922	99	46	40,4	cyclictest	2427399	-21	fschecks_time	23:05:20	0
2295922	99	46	40,4	cyclictest	2426726	-21	latency_hist	23:05:02	0
2295922	99	46	3,8	cyclictest	2316558	-21	apt-get	20:30:10	0
2295922	99	46	27,16	cyclictest	2392267	-21	apt-key	22:25:01	0
2295922	99	46	19,20	cyclictest	2326877	-21	diskmemload	21:10:12	0
2295922	99	45	38,5	cyclictest	2300301	-21	fschecks_count	19:25:19	0
2295922	99	45	35,7	cyclictest	2303874	-21	aten2__	19:40:14	0
2295922	99	45	35,7	cyclictest	0	-21	swapper/0	21:30:26	0
2295923	99	44	31,9	cyclictest	2320475	-21	modprobe	20:45:00	1
2295923	99	44	31,9	cyclictest	2320475	-21	modprobe	20:45:00	1
2295922	99	44	6,33	cyclictest	2332486	-21	ssh	21:15:38	0
2295922	99	44	35,7	cyclictest	2384668	-21	sendmail_mailqu	22:15:37	0
2295922	99	44	34,8	cyclictest	2448942	-21	fschecks_count	23:30:19	0
2295923	99	43	37,5	cyclictest	2411920	-21	kworker/u4:1+events_unbound	22:49:14	1
2295923	99	43	36,5	cyclictest	2310125	-21	kworker/u4:6+events_unbound	20:21:01	1
2295923	99	43	36,4	cyclictest	0	-21	swapper/1	19:40:02	1
2295923	99	43	35,6	cyclictest	2293410	-21	kworker/u4:4+events_unbound	19:15:13	1
2295923	99	43	34,6	cyclictest	2335592	-21	cron	21:20:00	1
2295922	99	43	36,5	cyclictest	2325599	-21	ls	21:05:00	0
2295922	99	43	35,6	cyclictest	2297235	-21	kworker/u4:13+events_unbound	19:37:32	0
2295922	99	43	35,5	cyclictest	2306421	-21	grep	19:50:15	0
2295922	99	43	31,10	cyclictest	0	-21	swapper/0	20:30:01	0
2295923	99	42	35,5	cyclictest	2297234	-21	kworker/u4:12+events_unbound	19:50:02	1
2295922	99	42	36,4	cyclictest	2379593	-21	df_abs	22:10:17	0
2295922	99	42	35,5	cyclictest	2362156	-21	aten_r7power_po	21:50:16	0
2295922	99	42	33,7	cyclictest	2305206	-21	aten_r7power_en	19:45:16	0
2295922	99	42	33,6	cyclictest	2313186	-21	fschecks_time	20:15:20	0
2295922	99	42	33,6	cyclictest	2313186	-21	fschecks_time	20:15:19	0
2295922	99	42	31,9	cyclictest	2353966	-21	/usr/sbin/munin	21:40:23	0
2295922	99	42	2,36	cyclictest	0	-21	swapper/0	22:25:11	0
2295922	99	42	22,17	cyclictest	2320450	-21	kworker/u4:12-rpciod	21:10:01	0
2295922	99	42	22,17	cyclictest	2320450	-21	kworker/u4:12-rpciod	21:10:00	0
2295923	99	41	32,7	cyclictest	2299924	-21	latency_hist	19:25:01	1
2295923	99	41	28,5	cyclictest	2310125	-21	kworker/u4:6+events_unbound	20:59:00	1
2295922	99	41	35,4	cyclictest	2311794	-21	df_abs	20:10:17	0
2295922	99	41	33,6	cyclictest	2318191	-21	aten_r7power_po	20:35:16	0
2295922	99	41	32,7	cyclictest	2319674	-21	fschecks_time	20:40:20	0
2295922	99	41	32,7	cyclictest	2319674	-21	fschecks_time	20:40:19	0
2295923	99	40	31,7	cyclictest	2300224	-21	df_abs	19:25:17	1
2295922	99	40	34,4	cyclictest	2322012	-21	aten_r7power_po	20:50:16	0
2295922	99	40	22,16	cyclictest	0	-21	swapper/0	23:40:17	0
2295922	99	36	30,4	cyclictest	2297233	-21	kworker/u4:11-rpciod	19:30:36	0
2295923	99	31	24,5	cyclictest	0	-21	swapper/1	19:10:01	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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