OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #7, slot #2

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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 Thu Jul 23, 2026 12:44:08)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
660191	99	119	99,17	cyclictest	53	-21	kswapd0	12:25:11	0
660193	99	111	100,8	cyclictest	730178	-21	kworker/u4:3+events_unbound	10:20:54	1
660191	99	98	44,42	cyclictest	256	50	irq/23-42890000.ethernet	07:10:01	0
660193	99	95	84,9	cyclictest	675652	-21	kworker/u4:4+events_unbound	08:25:28	1
660193	99	87	77,8	cyclictest	661505	-21	kworker/u4:0+events_unbound	08:15:24	1
660191	99	77	43,31	cyclictest	0	-21	swapper/0	10:50:12	0
660193	99	76	66,8	cyclictest	673001	-21	kworker/u4:7+events_unbound	08:35:32	1
660191	99	75	41,30	cyclictest	873103	-21	unixbench_singl	12:30:39	0
660191	99	74	27,44	cyclictest	723692	-21	gltestperf	09:45:21	0
660193	99	72	60,8	cyclictest	826773	-21	aten2__	11:40:18	1
660191	99	72	23,46	cyclictest	0	-21	swapper/0	12:40:01	0
660193	99	71	63,6	cyclictest	680772	-21	kworker/u4:12+events_unbound	08:45:39	1
660193	99	71	63,5	cyclictest	655184	-21	kworker/u4:8+events_unbound	08:05:17	1
660191	99	71	36,32	cyclictest	858953	-21	/usr/sbin/munin	12:15:26	0
660191	99	69	58,9	cyclictest	0	-21	swapper/0	11:20:29	0
660191	99	69	2,23	cyclictest	849301	-21	apt-get	12:05:14	0
660193	99	67	60,5	cyclictest	842564	-21	kworker/u4:4+events_unbound	12:01:13	1
660191	99	67	36,28	cyclictest	804211	-21	aten_r7power_vo	11:15:19	0
660191	99	67	34,30	cyclictest	818013	-21	fschecks_time	11:30:20	0
660191	99	67	31,34	cyclictest	667719	-21	timerwakeupswit	07:35:38	0
660193	99	66	59,5	cyclictest	788034	-21	kworker/u4:2+events_unbound	11:10:00	1
660193	99	66	44,16	cyclictest	713791	-21	modprobe	09:35:00	1
660191	99	66	7,5	cyclictest	17	1	rcu_preempt	09:35:34	0
660191	99	66	56,7	cyclictest	788034	-21	kworker/u4:2+events_unbound	11:01:01	0
660191	99	66	48,10	cyclictest	674311	-21	kworker/u4:8	08:05:00	0
660191	99	66	32,31	cyclictest	664372	-21	aten_r7power_po	07:25:17	0
660191	99	66	2,20	cyclictest	746862	-21	ssh	10:10:43	0
660191	99	65	42,20	cyclictest	742246	-21	ps	10:05:37	0
660191	99	65	33,29	cyclictest	679954	-21	fschecks_count	08:25:20	0
660191	99	65	33,29	cyclictest	0	-21	swapper/0	09:50:28	0
660191	99	65	30,32	cyclictest	0	-21	swapper/0	07:50:19	0
660193	99	64	55,6	cyclictest	0	-21	swapper/1	11:00:40	1
660191	99	64	55,6	cyclictest	842566	-21	kworker/u4:7+events_unbound	12:11:15	0
660191	99	64	4,19	cyclictest	831202	-21	ssh	11:45:12	0
660191	99	64	39,17	cyclictest	754797	-21	ssh	10:20:14	0
660191	99	64	31,30	cyclictest	689374	-21	sendmail_mailqu	09:00:38	0
660191	99	64	29,32	cyclictest	679416	-21	unixbench_multi	08:20:38	0
660191	99	63	4,15	cyclictest	764364	-21	ntpq	10:30:58	0
660191	99	63	31,27	cyclictest	661734	-21	aten2__	07:15:17	0
660191	99	63	30,30	cyclictest	813614	-21	gltestperf	11:25:21	0
660191	99	63	27,31	cyclictest	0	-21	swapper/0	09:15:29	0
660191	99	63	2,20	cyclictest	759218	-21	apt-get	10:25:19	0
660191	99	63	2,20	cyclictest	759218	-21	apt-get	10:25:18	0
660191	99	62	3,11	cyclictest	678221	-21	modprobe	08:20:00	0
660191	99	62	29,31	cyclictest	787234	-21	unixbench_multi	10:55:41	0
660191	99	62	28,30	cyclictest	0	-21	swapper/0	09:55:29	0
660191	99	62	27,33	cyclictest	773658	-21	unixbench_singl	10:40:40	0
660191	99	62	25,34	cyclictest	0	-21	swapper/0	08:30:37	0
660191	99	62	2,13	cyclictest	823001	-21	ntpq	11:35:35	0
660191	99	62	1,14	cyclictest	675186	-21	ntpq	08:05:35	0
660193	99	61	51,7	cyclictest	787485	-21	sshd	10:55:59	1
660191	99	61	35,24	cyclictest	690984	-21	kworker/u4:10-rpciod	09:30:32	0
660191	99	61	30,28	cyclictest	0	-21	swapper/0	09:05:15	0
660191	99	61	29,28	cyclictest	0	-21	swapper/0	11:10:20	0
660191	99	61	27,31	cyclictest	716388	-21	kworker/u4:4+rpciod	10:00:16	0
660191	99	61	19,39	cyclictest	777126	-21	/usr/sbin/munin	10:45:18	0
660193	99	60	47,9	cyclictest	0	-21	swapper/1	10:25:40	1
660193	99	60	47,9	cyclictest	0	-21	swapper/1	10:25:40	1
660193	99	60	44,12	cyclictest	0	-21	swapper/1	09:15:16	1
660191	99	60	4,20	cyclictest	718660	-21	ssh	09:40:11	0
660191	99	60	27,30	cyclictest	0	-21	swapper/0	08:55:18	0
660191	99	60	23,35	cyclictest	841158	-21	open_inodes	11:55:35	0
660193	99	59	49,7	cyclictest	761530	-21	kworker/u4:11+events_unbound	10:40:56	1
660191	99	59	52,5	cyclictest	788034	-21	kworker/u4:2+events_unbound	11:06:04	0
660191	99	59	50,6	cyclictest	661505	-21	kworker/u4:0+events_unbound	09:20:47	0
660191	99	59	33,23	cyclictest	690984	-21	kworker/u4:10-rpciod	09:10:38	0
660191	99	59	27,29	cyclictest	827584	-21	ld	11:40:36	0
660191	99	59	22,34	cyclictest	0	-21	swapper/0	08:40:39	0
660191	99	59	22,33	cyclictest	0	-21	swapper/0	07:10:37	0
660191	99	59	20,36	cyclictest	0	-21	swapper/0	08:35:21	0
660191	99	58	48,7	cyclictest	685895	-21	kworker/u4:14	08:50:00	0
660191	99	58	27,28	cyclictest	0	-21	swapper/0	11:50:19	0
660191	99	58	24,32	cyclictest	0	-21	swapper/0	12:20:41	0
660191	99	58	22,33	cyclictest	0	-21	swapper/0	10:35:28	0
660193	99	57	50,5	cyclictest	806413	-21	kworker/u4:6+events_unbound	11:21:07	1
660193	99	57	48,7	cyclictest	778824	-21	kworker/u4:6+events_unbound	10:50:59	1
660193	99	57	48,7	cyclictest	742042	-21	diskmemload	10:05:27	1
660191	99	57	2,18	cyclictest	845519	-21	ntpq	12:00:29	0
660191	99	57	18,6	cyclictest	0	-21	swapper/0	10:15:25	0
660191	99	57	15,7	cyclictest	666139	-21	/usr/sbin/munin	07:30:26	0
660193	99	56	47,7	cyclictest	660189	-21	cyclictest	12:38:54	1
660191	99	56	27,26	cyclictest	663860	-21	threads	07:20:48	0
660191	99	56	25,29	cyclictest	706358	-21	unixbench_singl	09:25:41	0
660193	99	55	42,9	cyclictest	718827	-21	cut	09:40:16	1
660191	99	55	5,12	cyclictest	686733	-21	ntpq	08:50:34	0
660193	99	54	45,6	cyclictest	751106	-21	ldconfig	10:15:33	1
660193	99	54	43,8	cyclictest	37	-21	kcompactd0	09:49:26	1
660193	99	54	36,11	cyclictest	0	-21	swapper/1	12:25:00	1
660193	99	53	45,6	cyclictest	815670	-21	kworker/u4:13+events_unbound	11:51:11	1
660193	99	53	42,5	cyclictest	0	-21	swapper/1	12:10:14	1
660193	99	53	36,7	cyclictest	661505	-21	kworker/u4:0+events_unbound	09:25:44	1
660193	99	53	36,11	cyclictest	0	-21	swapper/1	12:05:32	1
660191	99	53	17,5	cyclictest	0	-21	swapper/0	08:15:01	0
660193	99	52	43,6	cyclictest	700890	-21	gltestperf	09:20:20	1
660193	99	52	42,7	cyclictest	738231	-21	ssh	10:00:51	1
660193	99	52	42,5	cyclictest	660189	-21	cyclictest	11:55:33	1
660193	99	52	42,5	cyclictest	0	-21	swapper/1	07:20:46	1
660193	99	51	43,6	cyclictest	768486	-21	gcc	10:35:25	1
660193	99	51	42,5	cyclictest	858662	-21	fschecks_count	12:15:20	1
660191	99	51	44,5	cyclictest	672241	-21	fschecks_time	07:55:21	0
660191	99	51	1,18	cyclictest	669968	-21	ntpq	07:45:28	0
660193	99	50	42,6	cyclictest	670635	-21	systemd	07:50:09	1
660193	99	50	42,5	cyclictest	689748	-21	idleruntime-cro	09:05:00	1
660193	99	50	42,5	cyclictest	0	-21	swapper/1	11:35:31	1
660193	99	50	37,10	cyclictest	818488	-21	ntp_states	11:30:33	1
660193	99	49	40,5	cyclictest	0	-21	swapper/1	11:15:32	1
660193	99	48	39,7	cyclictest	660189	-21	cyclictest	09:50:49	1
660193	99	48	38,8	cyclictest	687149	-21	kworker/u4:13+events_unbound	09:10:45	1
660193	99	48	34,6	cyclictest	686984	-21	timerwakeupswit	08:50:37	1
660193	99	47	41,4	cyclictest	660628	-21	sed	07:10:25	1
660193	99	47	38,5	cyclictest	0	-21	swapper/1	07:55:31	1
660193	99	47	36,8	cyclictest	669417	-21	aten2__	07:45:17	1
660193	99	46	40,4	cyclictest	690710	-21	switchtime	09:05:35	1
660193	99	46	39,5	cyclictest	668822	-21	proc_pri	07:40:36	1
660193	99	46	39,4	cyclictest	746578	-21	ntpq	10:10:32	1
660193	99	46	38,6	cyclictest	674071	-21	awk	08:00:40	1
660193	99	46	35,8	cyclictest	0	-21	swapper/1	12:25:32	1
660193	99	45	39,5	cyclictest	690984	-21	kworker/u4:10+events_unbound	09:35:48	1
660193	99	45	38,5	cyclictest	813181	-21	aten_r7power_cu	11:25:17	1
660193	99	45	36,7	cyclictest	831633	-21	fschecks_time	11:45:19	1
660193	99	45	36,7	cyclictest	664313	-21	aten2__	07:25:16	1
660193	99	44	34,7	cyclictest	0	-21	swapper/1	12:34:59	1
660193	99	44	33,7	cyclictest	761527	-21	kworker/u4:7-rpciod	10:45:36	1
660193	99	43	37,4	cyclictest	764748	-21	/usr/sbin/munin	10:31:10	1
660193	99	43	36,5	cyclictest	667567	-21	sendmail_mailqu	07:35:36	1
660193	99	43	36,4	cyclictest	655184	-21	kworker/u4:8-rpciod	07:20:01	1
660193	99	43	34,6	cyclictest	0	-21	swapper/1	09:55:29	1
660193	99	42	35,5	cyclictest	675870	-21	aten2__	08:10:15	1
660193	99	42	34,6	cyclictest	803802	-21	latency_hist	11:15:02	1
660191	99	41	32,7	cyclictest	668183	-21	aten_r7power_en	07:40:16	0
660193	99	40	30,7	cyclictest	680765	-21	kworker/u4:2-xprtiod	08:40:40	1
660193	99	39	30,7	cyclictest	688244	-21	timerwakeupswit	08:55:39	1
660193	99	39	29,6	cyclictest	0	-21	swapper/1	07:10:00	1
660193	99	39	28,8	cyclictest	0	-21	swapper/1	08:30:23	1
660193	99	38	30,5	cyclictest	676923	-21	kworker/u4:14-rpciod	08:20:34	1
660193	99	37	26,8	cyclictest	0	-21	swapper/1	07:30:16	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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