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 100 highest latencies:

System rack7slot2.osadl.org (updated Mon May 18, 2026 00:44:07)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
530859	99	101	93,6	cyclictest	530790	-21	kworker/u4:6+events_unbound	20:36:48	0
530859	99	98	84,6	cyclictest	538569	-21	kworker/u4:14+events_unbound	20:21:48	0
530859	99	95	86,6	cyclictest	607558	-21	kworker/u4:6+events_unbound	22:32:00	0
530860	99	93	85,6	cyclictest	711223	-21	kworker/u4:17+events_unbound	00:03:18	1
530860	99	92	82,8	cyclictest	672161	-21	kworker/u4:7+events_unbound	23:17:09	1
530859	99	91	83,6	cyclictest	659677	-21	kworker/u4:4+events_unbound	23:22:10	0
530859	99	90	81,6	cyclictest	532085	-21	kworker/u4:10+events_unbound	19:21:35	0
530860	99	89	81,6	cyclictest	603211	-21	kworker/u4:4+events_unbound	22:16:59	1
530859	99	89	81,6	cyclictest	581934	-21	kworker/u4:9+events_unbound	21:56:57	0
530859	99	88	80,6	cyclictest	586320	-21	kworker/u4:3+events_unbound	21:51:55	0
530859	99	86	78,6	cyclictest	611947	-21	kworker/u4:0+events_unbound	22:27:00	0
530860	99	84	73,7	cyclictest	551388	-21	kworker/u4:10+events_unbound	21:26:52	1
530859	99	84	76,6	cyclictest	546256	-21	kworker/u4:3+events_unbound	20:31:46	0
530859	99	82	60,20	cyclictest	53	-21	kswapd0	23:25:09	0
530859	99	81	73,6	cyclictest	603211	-21	kworker/u4:4+events_unbound	22:06:57	0
530859	99	79	71,6	cyclictest	532085	-21	kworker/u4:10+events_unbound	19:56:41	0
530859	99	79	70,7	cyclictest	616331	-21	kworker/u4:7+events_unbound	22:22:00	0
530859	99	78	70,6	cyclictest	737428	-21	kworker/u4:12+events_unbound	00:38:28	0
530860	99	75	65,7	cyclictest	530787	-21	kworker/u4:1+events_unbound	19:25:01	1
530859	99	75	68,5	cyclictest	537298	-21	kworker/u4:9+events_unbound	19:46:39	0
530859	99	73	58,9	cyclictest	0	-21	swapper/0	00:25:29	0
530859	99	72	65,5	cyclictest	551385	-21	kworker/u4:4+events_unbound	20:41:48	0
530859	99	72	64,6	cyclictest	550110	-21	kworker/u4:8+events_unbound	20:56:48	0
530860	99	71	64,5	cyclictest	607560	-21	kworker/u4:9+events_unbound	22:42:03	1
530859	99	71	62,6	cyclictest	556502	-21	kworker/u4:19+events_unbound	20:50:02	0
530860	99	70	62,5	cyclictest	518234	-21	kworker/u4:9+events_unbound	19:20:01	1
530860	99	69	63,4	cyclictest	536023	-21	kworker/u4:3+events_unbound	19:30:00	1
530859	99	69	56,8	cyclictest	635948	-21	rm	22:35:18	0
530859	99	69	53,13	cyclictest	256	50	irq/23-42890000.ethernet	21:40:14	0
530859	99	68	61,5	cyclictest	528345	-21	kworker/u4:5+events_unbound	19:26:37	0
530859	99	64	54,8	cyclictest	680926	-21	kworker/u4:16+events_unbound	23:36:59	0
530859	99	64	49,11	cyclictest	53	-21	kswapd0	00:15:11	0
530859	99	60	49,7	cyclictest	546256	-21	kworker/u4:3-events_power_efficient	21:12:46	0
530859	99	60	48,8	cyclictest	571804	-21	mailstats	21:20:40	0
530859	99	59	42,10	cyclictest	544975	-21	systemd	20:01:40	0
530859	99	58	49,7	cyclictest	315	-21	systemd-journal	22:57:04	0
530859	99	58	43,8	cyclictest	256	50	irq/23-42890000.ethernet	21:45:37	0
530860	99	57	48,7	cyclictest	637664	-21	kworker/u4:8+events_unbound	22:37:01	1
530860	99	56	48,6	cyclictest	530786	-21	kworker/u4:0+events_unbound	20:01:42	1
530859	99	56	49,5	cyclictest	577568	-21	kworker/u4:7+events_unbound	21:36:54	0
530860	99	55	47,6	cyclictest	539872	-21	kworker/u4:18+events_unbound	20:11:43	1
530860	99	55	46,7	cyclictest	537299	-21	kworker/u4:11+events_unbound	19:51:40	1
530859	99	55	47,6	cyclictest	711223	-21	kworker/u4:17+events_unbound	00:02:58	0
530859	99	55	40,7	cyclictest	727489	-21	ssh	00:20:37	0
530859	99	55	3,36	cyclictest	697109	-21	ssh	23:45:37	0
530860	99	54	46,6	cyclictest	537298	-21	kworker/u4:9+events_unbound	19:36:39	1
530860	99	54	46,5	cyclictest	593611	-21	/usr/sbin/munin	21:45:43	1
530860	99	54	40,4	cyclictest	550113	-21	kworker/u4:17+events_unbound	20:25:01	1
530860	99	54	35,7	cyclictest	672160	-21	kworker/u4:6+events_unbound	23:36:00	1
530859	99	54	43,9	cyclictest	556317	-21	timerwakeupswit	20:45:38	0
530859	99	54	40,6	cyclictest	577568	-21	kworker/u4:7+events_unbound	21:31:00	0
530859	99	54	29,12	cyclictest	15	1	ktimers/0	22:00:34	0
530860	99	53	47,4	cyclictest	637664	-21	kworker/u4:8+events_unbound	22:50:58	1
530860	99	53	46,5	cyclictest	610320	-21	/usr/sbin/munin	22:05:23	1
530860	99	53	44,7	cyclictest	711220	-21	kworker/u4:14+events_unbound	00:05:58	1
530859	99	53	46,4	cyclictest	0	-21	swapper/0	23:05:15	0
530859	99	53	44,7	cyclictest	680926	-21	kworker/u4:16+events_unbound	23:41:00	0
530859	99	52	46,5	cyclictest	703019	-21	kworker/u4:5+events_unbound	23:55:02	0
530859	99	52	45,5	cyclictest	616332	-21	kworker/u4:8+events_unbound	22:15:17	0
530859	99	52	33,16	cyclictest	719396	-21	sshd	00:10:56	0
530860	99	51	40,5	cyclictest	664039	-21	kworker/u4:10+events_unbound	23:12:08	1
530859	99	51	40,8	cyclictest	0	-21	swapper/0	22:10:12	0
530859	99	51	38,6	cyclictest	546255	-21	kworker/u4:1+events_unbound	20:12:44	0
530859	99	51	28,19	cyclictest	533380	-21	cron	19:20:00	0
530860	99	50	43,5	cyclictest	697399	-21	timerwakeupswit	23:45:42	1
530860	99	50	40,7	cyclictest	602271	-21	grep	21:55:42	1
530859	99	50	44,4	cyclictest	538569	-21	kworker/u4:14+events_unbound	21:17:00	0
530859	99	50	43,5	cyclictest	658166	-21	ssh	23:00:36	0
530859	99	50	43,5	cyclictest	534666	-21	kworker/u4:15+events_unbound	19:40:08	0
530859	99	50	11,5	cyclictest	644417	-21	aten_r7power_po	22:45:16	0
530860	99	49	43,4	cyclictest	729526	-21	systemd	00:23:24	1
530860	99	49	43,4	cyclictest	611949	-21	kworker/u4:2+events_unbound	22:15:00	1
530860	99	49	42,5	cyclictest	731194	-21	cut	00:25:19	1
530860	99	49	42,5	cyclictest	683941	-21	ld	23:30:29	1
530860	99	49	41,6	cyclictest	611948	-21	kworker/u4:1+events_unbound	23:00:43	1
530860	99	49	40,6	cyclictest	550110	-21	kworker/u4:8+events_unbound	21:01:48	1
530860	99	49	39,7	cyclictest	628179	-21	unixbench-2d	22:25:40	1
530859	99	49	41,6	cyclictest	689766	-21	kworker/u4:4+events_unbound	00:08:01	0
530859	99	49	39,7	cyclictest	579246	-21	latency_hist	21:30:00	0
530859	99	49	30,17	cyclictest	0	-21	swapper/0	23:30:35	0
530860	99	48	42,5	cyclictest	550110	-21	kworker/u4:8+events_unbound	21:16:51	1
530860	99	48	41,5	cyclictest	711220	-21	kworker/u4:14+events_unbound	00:12:41	1
530860	99	48	41,5	cyclictest	580291	-21	ld	21:30:29	1
530860	99	48	39,7	cyclictest	597519	-21	ntp_kernel_pll_	21:50:30	1
530860	99	48	39,7	cyclictest	551388	-21	kworker/u4:10+events_unbound	20:45:00	1
530859	99	48	41,5	cyclictest	541933	-21	ntpq	19:50:28	0
530859	99	48	40,6	cyclictest	378	-21	dbus-daemon	23:17:08	0
530860	99	47	41,4	cyclictest	735169	-21	hostname	00:30:18	1
530860	99	47	40,5	cyclictest	659679	-21	kworker/u4:7+events_unbound	23:06:28	1
530860	99	47	40,4	cyclictest	606390	-21	/usr/sbin/munin	22:00:39	1
530860	99	47	39,5	cyclictest	545921	-21	sendmail_mailqu	20:05:37	1
530860	99	47	39,5	cyclictest	0	-21	swapper/1	19:10:35	1
530860	99	47	38,6	cyclictest	635470	-21	latency_hist	22:35:02	1
530860	99	47	33,5	cyclictest	603211	-21	kworker/u4:4+events_unbound	22:20:41	1
530860	99	47	32,10	cyclictest	37	-21	kcompactd0	21:12:14	1
530859	99	47	40,5	cyclictest	530788	-21	kworker/u4:2+events_unbound	19:13:45	0
530859	99	47	39,5	cyclictest	665887	-21	apt-get	23:10:17	0
530859	99	47	38,7	cyclictest	537781	-21	fschecks_count	19:35:18	0
530859	99	47	37,6	cyclictest	0	-21	swapper/0	00:30:28	0
530860	99	46	37,7	cyclictest	653411	-21	gltestperf	22:55:21	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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