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 Sat Feb 21, 2026 12:44:11)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
557882	99	96	88,6	cyclictest	557812	-21	kworker/u4:8+events_unbound	09:00:16	1
557881	99	89	83,4	cyclictest	560355	-21	kworker/u4:12+events_unbound	07:29:51	0
557881	99	89	81,6	cyclictest	651222	-21	kworker/u4:9+events_unbound	10:30:27	0
557881	99	71	59,9	cyclictest	651222	-21	kworker/u4:9+events_unbound	10:25:26	0
557881	99	69	54,13	cyclictest	690067	-21	kworker/u4:2+events_unbound	11:40:42	0
557881	99	69	2,3	cyclictest	757695	-21	ssh	12:25:25	0
557882	99	67	57,8	cyclictest	587052	-21	kworker/u4:5+events_unbound	09:15:18	1
557881	99	67	59,5	cyclictest	19	1	rcuc/0	09:00:16	0
557882	99	62	49,10	cyclictest	621188	-21	kworker/u4:6+events_unbound	09:50:21	1
557882	99	61	53,5	cyclictest	750276	-21	kworker/u4:9+events_unbound	12:20:00	1
557882	99	60	52,6	cyclictest	599327	-21	kworker/u4:13+events_unbound	09:35:20	1
557882	99	60	51,7	cyclictest	583265	-21	kworker/u4:12+events_unbound	08:50:16	1
557882	99	60	51,6	cyclictest	0	-21	swapper/1	11:30:12	1
557882	99	60	38,14	cyclictest	744887	-21	ntpq	12:10:32	1
557882	99	59	47,8	cyclictest	753089	-21	grep	12:20:18	1
557882	99	59	39,13	cyclictest	727491	-21	ntpq	11:50:27	1
557882	99	58	47,8	cyclictest	557810	-21	kworker/u4:6-rpciod	07:45:33	1
557882	99	58	37,14	cyclictest	731747	-21	ntpq	11:55:26	1
557881	99	58	50,6	cyclictest	681303	-21	kworker/u4:15+events_unbound	11:45:43	0
557882	99	57	51,4	cyclictest	614996	-21	fschecks_time	09:40:21	1
557882	99	57	45,9	cyclictest	625554	-21	kworker/u4:4+events_unbound	09:55:22	1
557882	99	56	40,10	cyclictest	618904	-21	apt-get	09:45:13	1
557882	99	56	40,10	cyclictest	618904	-21	apt-get	09:45:13	1
557882	99	56	32,13	cyclictest	598030	-21	ntpq	09:20:23	1
557881	99	56	47,6	cyclictest	709560	-21	aten_r7power_en	11:30:13	0
557881	99	56	10,33	cyclictest	628213	-21	ssh	09:55:26	0
557882	99	55	41,10	cyclictest	37	-21	kcompactd0	10:30:44	1
557882	99	55	38,12	cyclictest	662930	-21	ssh	10:35:37	1
557882	99	55	36,16	cyclictest	641093	-21	ssh	10:10:25	1
557882	99	55	36,13	cyclictest	765941	-21	diskstats	12:35:22	1
557882	99	55	31,15	cyclictest	582036	-21	idleruntime-cro	08:45:00	1
557881	99	55	46,6	cyclictest	673161	-21	kworker/u4:11+events_unbound	10:50:29	0
557882	99	54	47,5	cyclictest	714281	-21	gltestperf	11:35:20	1
557882	99	54	46,6	cyclictest	708534	-21	sendmail-mta	11:28:59	1
557882	99	54	45,7	cyclictest	616813	-21	kworker/u4:7+events_unbound	10:20:25	1
557882	99	54	44,8	cyclictest	587386	-21	systemd	09:05:16	1
557882	99	54	37,12	cyclictest	585306	-21	sed	08:55:27	1
557882	99	54	36,14	cyclictest	666359	-21	apt-get	10:40:13	1
557882	99	54	33,17	cyclictest	671324	-21	ntpq	10:45:27	1
557882	99	53	31,18	cyclictest	636897	-21	ntpq	10:05:30	1
557881	99	53	46,5	cyclictest	589637	-21	mailstats	09:10:37	0
557881	99	53	46,5	cyclictest	560869	-21	fschecks_count	07:20:18	0
557881	99	53	44,6	cyclictest	707636	-21	kworker/u4:6+events_unbound	11:35:41	0
557882	99	52	44,5	cyclictest	657450	-21	apt-config	10:30:02	1
557882	99	52	43,7	cyclictest	589435	-21	sh	09:10:31	1
557882	99	52	36,12	cyclictest	696778	-21	ssh	11:15:18	1
557882	99	52	35,12	cyclictest	700831	-21	ssh	11:20:13	1
557882	99	52	34,14	cyclictest	577757	-21	grep	08:25:35	1
557882	99	52	33,13	cyclictest	692826	-21	ssh	11:10:23	1
557882	99	52	11,30	cyclictest	648756	-21	modprobe	10:20:00	1
557881	99	52	42,8	cyclictest	685713	-21	kworker/u4:7+events_unbound	11:05:32	0
557882	99	51	42,7	cyclictest	602023	-21	fschecks_count	09:25:19	1
557882	99	51	40,7	cyclictest	632150	-21	fschecks_count	10:00:19	1
557882	99	51	39,5	cyclictest	37	-21	kcompactd0	11:40:16	1
557882	99	51	37,8	cyclictest	757726	-21	ntpq	12:25:27	1
557882	99	51	36,11	cyclictest	558671	-21	ntpq	07:10:31	1
557882	99	51	36,11	cyclictest	558671	-21	ntpq	07:10:31	1
557882	99	51	36,10	cyclictest	762199	-21	ssh	12:30:35	1
557882	99	51	35,11	cyclictest	580258	-21	ntpq	08:35:27	1
557882	99	51	30,13	cyclictest	723153	-21	ntpq	11:45:29	1
557881	99	51	44,5	cyclictest	627223	-21	basename	09:55:00	0
557881	99	51	44,5	cyclictest	564234	-21	kworker/u4:18+events_unbound	07:50:02	0
557881	99	51	43,5	cyclictest	598580	-21	unixbench_multi	09:20:38	0
557881	99	51	30,19	cyclictest	701733	-21	proc_pri	11:20:36	0
557882	99	50	6,35	cyclictest	576415	-21	sshd	08:20:30	1
557882	99	50	43,5	cyclictest	688260	-21	fschecks_count	11:05:20	1
557882	99	50	31,10	cyclictest	675675	-21	ntpq	10:50:28	1
557881	99	50	43,5	cyclictest	732080	-21	mailstats	11:55:37	0
557881	99	50	43,5	cyclictest	606386	-21	gltestperf	09:30:19	0
557881	99	50	43,5	cyclictest	574329	-21	kworker/u4:7+events_unbound	08:31:44	0
557881	99	50	41,6	cyclictest	632051	-21	df_abs	10:00:17	0
557881	99	50	41,6	cyclictest	618673	-21	latency_hist	09:45:02	0
557881	99	50	38,6	cyclictest	574329	-21	kworker/u4:7+events_unbound	08:15:37	0
557881	99	50	1,40	cyclictest	667140	-21	ntpq	10:40:31	0
557882	99	49	36,9	cyclictest	605933	-21	apt-get	09:30:11	1
557882	99	49	35,10	cyclictest	683587	-21	apt-get	11:00:12	1
557882	99	49	33,13	cyclictest	566258	-21	ntpq	07:40:25	1
557882	99	49	32,14	cyclictest	679269	-21	ssh	10:55:12	1
557882	99	49	32,14	cyclictest	679269	-21	ssh	10:55:12	1
557882	99	49	16,7	cyclictest	737917	-21	ssh	12:02:30	1
557881	99	49	42,5	cyclictest	670812	-21	aten_r7power_po	10:45:19	0
557881	99	49	41,5	cyclictest	662766	-21	ld	10:35:30	0
557881	99	49	40,6	cyclictest	0	-21	swapper/0	12:05:16	0
557881	99	49	40,6	cyclictest	0	-21	swapper/0	12:05:16	0
557881	99	49	38,8	cyclictest	761607	-21	df_abs	12:30:18	0
557881	99	49	37,9	cyclictest	749138	-21	ld	12:15:29	0
557881	99	49	35,12	cyclictest	622926	-21	awk	09:50:00	0
557881	99	49	35,12	cyclictest	622926	-21	awk	09:50:00	0
557881	99	49	15,22	cyclictest	641177	-21	ssh	10:10:29	0
557882	99	48	38,8	cyclictest	561648	-21	systemd	07:24:50	1
557882	99	48	38,6	cyclictest	0	-21	swapper/1	08:05:23	1
557882	99	48	37,8	cyclictest	559601	-21	fschecks_time	07:15:19	1
557882	99	48	15,9	cyclictest	588343	-21	diskmemload	12:07:08	1
557882	99	48	15,9	cyclictest	588343	-21	diskmemload	12:07:08	1
557881	99	48	42,4	cyclictest	560356	-21	kworker/u4:13+events_unbound	07:43:44	0
557881	99	48	41,6	cyclictest	557878	-21	cyclictest	07:14:49	0
557881	99	48	41,6	cyclictest	557878	-21	cyclictest	07:14:49	0
557881	99	48	41,5	cyclictest	727069	-21	awk	11:50:18	0
557881	99	48	41,5	cyclictest	683583	-21	/usr/sbin/munin	11:00:11	0
557881	99	48	40,6	cyclictest	649229	-21	/usr/sbin/munin	10:20:16	0
557881	99	48	28,15	cyclictest	0	-21	swapper/0	11:28:50	0
557882	99	47	34,9	cyclictest	563782	-21	ntpq	07:30:30	1
557882	99	47	34,10	cyclictest	575165	-21	ntpq	08:15:31	1
557882	99	47	33,10	cyclictest	562537	-21	ntpq	07:25:33	1
557882	99	47	16,9	cyclictest	582201	-21	apt-get	08:45:13	1
557881	99	47	42,4	cyclictest	557808	-21	kworker/u4:4+events_unbound	07:15:03	0
557881	99	47	40,5	cyclictest	557878	-21	cyclictest	12:10:40	0
557881	99	47	39,6	cyclictest	766722	-21	/usr/sbin/munin	12:35:41	0
557881	99	47	39,6	cyclictest	585836	-21	grep	09:00:01	0
557882	99	46	13,9	cyclictest	569703	-21	diskstats	07:55:18	1
557881	99	46	39,5	cyclictest	542681	-21	kworker/u4:3+events_unbound	07:30:04	0
557881	99	46	38,5	cyclictest	680227	-21	sendmail_mailqu	10:55:35	0
557881	99	46	38,5	cyclictest	680227	-21	sendmail_mailqu	10:55:35	0
557881	99	46	36,8	cyclictest	636221	-21	aten_r7power_en	10:05:16	0
557881	99	46	36,8	cyclictest	583808	-21	fschecks_time	08:50:19	0
557881	99	46	25,18	cyclictest	582037	-21	sh	08:45:00	0
557882	99	45	36,7	cyclictest	578407	-21	acpi	08:30:13	1
557882	99	45	35,7	cyclictest	565672	-21	latency_hist	07:40:02	1
557882	99	45	30,10	cyclictest	573959	-21	grep	08:10:34	1
557882	99	45	14,9	cyclictest	569312	-21	munin-run	07:55:01	1
557881	99	45	40,4	cyclictest	570539	-21	kworker/u4:9+events_unbound	08:39:31	0
557881	99	45	38,5	cyclictest	736442	-21	cat	12:00:37	0
557881	99	45	38,5	cyclictest	644757	-21	aten2__	10:15:13	0
557881	99	45	37,6	cyclictest	587518	-21	fschecks_count	09:05:19	0
557881	99	45	37,6	cyclictest	573281	-21	aten2__	08:10:15	0
557881	99	45	36,6	cyclictest	0	-21	swapper/0	08:25:00	0
557881	99	45	23,19	cyclictest	0	-21	swapper/0	09:30:01	0
557882	99	44	34,7	cyclictest	570898	-21	aten_r7power_vo	08:00:16	1
557881	99	44	36,6	cyclictest	696950	-21	gltestperf	11:15:20	0
557881	99	44	34,8	cyclictest	564452	-21	aten2__	07:35:15	0
557881	99	43	7,5	cyclictest	15	1	ktimers/0	12:20:22	0
557881	99	43	37,4	cyclictest	614274	-21	basename	09:40:01	0
557881	99	42	33,6	cyclictest	593133	-21	aten_r7power_cu	09:15:16	0
557881	99	42	32,8	cyclictest	578125	-21	kworker/u4:14+rpciod	08:30:01	0
557881	99	42	32,8	cyclictest	572036	-21	aten2__	08:05:15	0
557881	99	42	31,8	cyclictest	0	-21	swapper/0	11:10:33	0
557881	99	41	31,8	cyclictest	570853	-21	aten_r7power_po	08:00:15	0
557881	99	39	30,7	cyclictest	567054	-21	aten_r7power_po	07:45:15	0
557882	99	38	26,8	cyclictest	557897	-21	latency_hist	07:10:01	1
557881	99	38	29,7	cyclictest	557878	-21	cyclictest	08:45:26	0
557881	99	37	30,5	cyclictest	557891	-21	latency_hist	07:10:01	0
557881	99	37	30,5	cyclictest	0	-21	swapper/0	07:55:37	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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