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 Fri Dec 19, 2025 00:44:12)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
274194	99	120	113,5	cyclictest	387750	-21	kworker/u4:8+events_unbound	23:17:12	1
274194	99	114	106,6	cyclictest	351793	-21	kworker/u4:5+events_unbound	22:18:10	1
274194	99	97	82,6	cyclictest	256603	-21	kworker/u4:9+events_unbound	19:12:40	1
274194	99	92	79,6	cyclictest	276697	-21	kworker/u4:13+events_unbound	19:40:01	1
274194	99	88	81,5	cyclictest	303642	-21	kworker/u4:12+events_unbound	21:02:54	1
274194	99	88	80,6	cyclictest	315651	-21	kworker/u4:4+events_unbound	21:22:58	1
274192	99	88	79,7	cyclictest	289560	-21	kworker/u4:11+events_unbound	20:45:00	0
274194	99	87	80,5	cyclictest	4013660	-21	kworker/u4:6+events_unbound	19:32:40	1
274194	99	87	79,6	cyclictest	276696	-21	kworker/u4:12+events_unbound	20:02:46	1
274194	99	83	75,6	cyclictest	298530	-21	kworker/u4:4+events_unbound	20:57:54	1
274194	99	81	74,5	cyclictest	4013660	-21	kworker/u4:6+events_unbound	19:47:42	1
274194	99	80	72,6	cyclictest	271600	-21	kworker/u4:3+events_unbound	19:22:38	1
274194	99	79	66,6	cyclictest	294687	-21	kworker/u4:1+events_unbound	20:37:51	1
274194	99	78	70,6	cyclictest	285723	-21	kworker/u4:3+events_unbound	19:57:45	1
274194	99	76	69,5	cyclictest	339584	-21	kworker/u4:6+events_unbound	21:53:04	1
274194	99	73	66,5	cyclictest	4013660	-21	kworker/u4:6+events_unbound	19:17:01	1
274194	99	69	59,8	cyclictest	53	-21	kswapd0	00:00:38	1
274192	99	68	57,8	cyclictest	53	-21	kswapd0	00:20:13	0
274194	99	65	58,5	cyclictest	387198	-21	kworker/u4:1+events_unbound	23:25:04	1
274192	99	65	57,6	cyclictest	339588	-21	kworker/u4:12+events_unbound	21:55:02	0
274194	99	64	56,5	cyclictest	343634	-21	kworker/u4:4+events_unbound	22:03:07	1
274194	99	64	53,9	cyclictest	53	-21	kswapd0	00:20:02	1
274192	99	63	48,13	cyclictest	53	-21	kswapd0	23:44:18	0
274194	99	62	50,5	cyclictest	289560	-21	kworker/u4:11+events_unbound	20:10:01	1
274194	99	60	53,5	cyclictest	284367	-21	kworker/u4:4+events_unbound	20:15:02	1
274192	99	60	14,34	cyclictest	0	-21	swapper/0	00:00:44	0
274194	99	59	52,5	cyclictest	299803	-21	kworker/u4:15+events_unbound	21:15:05	1
274194	99	59	52,5	cyclictest	289560	-21	kworker/u4:11+events_unbound	20:20:04	1
274192	99	59	49,7	cyclictest	274190	-21	cyclictest	23:16:55	0
274192	99	59	23,23	cyclictest	0	-21	swapper/0	20:45:30	0
274194	99	58	47,5	cyclictest	289560	-21	kworker/u4:11+events_unbound	20:25:02	1
274192	99	58	52,3	cyclictest	443143	-21	kworker/u4:14+events_unbound	00:06:44	0
274192	99	58	40,12	cyclictest	53	-21	kswapd0	23:20:11	0
274194	99	57	49,6	cyclictest	375653	-21	kworker/u4:3+events_unbound	23:23:21	1
274194	99	57	43,10	cyclictest	401163	-21	cat	23:10:01	1
274194	99	57	39,6	cyclictest	371554	-21	kworker/u4:13+events_unbound	23:13:37	1
274192	99	56	46,7	cyclictest	462393	-21	ssh	00:26:06	0
274192	99	56	38,16	cyclictest	377303	-21	munin-plugin-st	22:40:00	0
274192	99	56	21,19	cyclictest	0	-21	swapper/0	21:25:14	0
274194	99	55	43,5	cyclictest	351795	-21	kworker/u4:9+events_unbound	22:07:59	1
274192	99	55	47,6	cyclictest	326560	-21	timerandwakeup	21:35:41	0
274192	99	54	48,4	cyclictest	389326	-21	latency_hist	22:55:03	0
274192	99	54	35,17	cyclictest	284405	-21	munin-plugin-st	19:50:00	0
274194	99	53	47,4	cyclictest	426260	-21	switchtime	23:40:40	1
274194	99	53	46,5	cyclictest	375653	-21	kworker/u4:3+events_unbound	23:52:44	1
274194	99	53	43,4	cyclictest	343636	-21	kworker/u4:5+events_unbound	21:58:44	1
274194	99	53	34,16	cyclictest	27	1	ktimers/1	00:07:01	1
274192	99	53	47,4	cyclictest	0	-21	swapper/0	21:45:15	0
274192	99	53	45,6	cyclictest	345882	-21	fschecks_count	22:00:20	0
274192	99	53	45,5	cyclictest	366569	-21	/usr/sbin/munin	22:25:38	0
274192	99	53	44,6	cyclictest	294730	-21	munin-plugin-st	20:30:00	0
274194	99	52	45,5	cyclictest	334007	-21	gltestperf	21:45:21	1
274194	99	52	45,5	cyclictest	331468	-21	kworker/u4:1+events_unbound	21:43:59	1
274194	99	52	42,8	cyclictest	449381	-21	fschecks_count	00:10:21	1
274194	99	52	38,6	cyclictest	256602	-21	kworker/u4:8+events_unbound	19:54:43	1
274192	99	52	39,9	cyclictest	274190	-21	cyclictest	00:15:35	0
274194	99	51	43,6	cyclictest	294690	-21	kworker/u4:6+events_unbound	20:45:03	1
274192	99	51	39,9	cyclictest	401900	-21	if_eth0	23:10:22	0
274192	99	51	36,8	cyclictest	468513	-21	kworker/u4:5	00:35:01	0
274192	99	51	32,17	cyclictest	354572	-21	sendmail_mailqu	22:10:42	0
274194	99	50	43,5	cyclictest	460921	-21	aten2__	00:25:15	1
274194	99	50	43,5	cyclictest	387750	-21	kworker/u4:8+events_unbound	23:03:59	1
274194	99	50	42,6	cyclictest	381536	-21	apt-get	22:45:12	1
274194	99	50	40,7	cyclictest	322476	-21	switchtime	21:30:39	1
274194	99	49	43,4	cyclictest	419528	-21	kworker/u4:1+events_unbound	23:32:44	1
274194	99	49	42,5	cyclictest	368308	-21	systemd	22:28:10	1
274192	99	49	42,5	cyclictest	469339	-21	uname	00:35:23	0
274192	99	49	42,5	cyclictest	397455	-21	aten2__	23:05:17	0
274192	99	49	41,6	cyclictest	302274	-21	unixbench_multi	20:55:40	0
274192	99	49	39,8	cyclictest	407354	-21	kworker/u4:11+events_unbound	23:28:23	0
274192	99	49	38,8	cyclictest	382822	-21	unixbench_singl	22:45:42	0
274192	99	49	24,23	cyclictest	278302	-21	aten_r7power_po	19:25:17	0
274194	99	48	43,4	cyclictest	383702	-21	kworker/u4:0+events_unbound	22:58:00	1
274194	99	48	41,5	cyclictest	443143	-21	kworker/u4:14+events_unbound	00:30:43	1
274194	99	48	41,5	cyclictest	430421	-21	unixbench_singl	23:45:40	1
274194	99	48	41,5	cyclictest	421754	-21	gltestperf	23:35:22	1
274194	99	48	41,5	cyclictest	317387	-21	ssh	21:25:13	1
274194	99	48	41,5	cyclictest	298563	-21	kworker/u4:9	20:45:00	1
274194	99	48	39,7	cyclictest	361785	-21	aten_r7power_en	22:20:16	1
274194	99	48	3,42	cyclictest	386351	-21	ssh	22:50:34	1
274192	99	48	41,5	cyclictest	418065	-21	gcc	23:30:30	0
274192	99	48	41,5	cyclictest	369930	-21	fschecks_time	22:30:22	0
274192	99	48	38,8	cyclictest	330816	-21	unixbench_singl	21:40:42	0
274192	99	48	37,9	cyclictest	437045	-21	/usr/sbin/munin	23:55:29	0
274194	99	47	42,3	cyclictest	437147	-21	aten_r7power_cu	23:55:16	1
274194	99	47	38,7	cyclictest	325962	-21	gltestperf	21:35:23	1
274194	99	47	38,5	cyclictest	363522	-21	kworker/u4:7-rpciod	22:35:30	1
274194	99	47	37,5	cyclictest	294690	-21	kworker/u4:6+events_unbound	21:11:44	1
274194	99	47	34,5	cyclictest	299803	-21	kworker/u4:15+events_unbound	20:51:00	1
274192	99	47	41,4	cyclictest	377716	-21	aten_r7power_po	22:40:17	0
274192	99	47	41,4	cyclictest	309341	-21	aten2__	21:15:15	0
274192	99	47	39,6	cyclictest	274536	-21	sed	19:10:17	0
274192	99	47	38,7	cyclictest	53	-21	kswapd0	23:50:13	0
274192	99	47	38,6	cyclictest	286192	-21	fschecks_count	19:55:20	0
274192	99	47	37,8	cyclictest	393583	-21	aten_r7power_en	23:00:17	0
274194	99	46	38,6	cyclictest	288834	-21	fschecks_time	20:05:19	1
274194	99	46	37,6	cyclictest	0	-21	swapper/1	22:40:31	1
274192	99	46	8,5	cyclictest	15	1	ktimers/0	22:07:10	0
274192	99	46	39,5	cyclictest	449739	-21	ntp_kernel_pll_	00:10:29	0
274192	99	46	35,9	cyclictest	325230	-21	latency_hist	21:35:01	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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