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 Sat Jun 20, 2026 12:44:09)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
727278	99	112	104,6	cyclictest	866505	-21	kworker/u4:4+events_unbound	11:20:43	1
727276	99	105	90,9	cyclictest	0	-21	swapper/0	11:40:28	0
727276	99	97	90,5	cyclictest	716120	-21	kworker/u4:16+events_unbound	07:40:09	0
727278	99	90	83,5	cyclictest	918488	-21	kworker/u4:8+events_unbound	12:20:55	1
727278	99	90	71,6	cyclictest	727212	-21	kworker/u4:4+events_unbound	08:35:22	1
727278	99	83	73,7	cyclictest	755668	-21	kworker/u4:12+events_unbound	09:40:33	1
727276	99	83	4,67	cyclictest	873085	-21	ssh	11:20:06	0
727278	99	82	75,5	cyclictest	742654	-21	kworker/u4:17+events_unbound	08:25:01	1
727278	99	82	74,6	cyclictest	782901	-21	kworker/u4:3+events_unbound	09:45:33	1
727278	99	82	72,7	cyclictest	782901	-21	kworker/u4:3+events_unbound	09:50:35	1
727278	99	82	72,7	cyclictest	782901	-21	kworker/u4:3+events_unbound	09:50:35	1
727276	99	76	68,6	cyclictest	53	-21	kswapd0	10:00:34	0
727276	99	75	40,26	cyclictest	53	-21	kswapd0	10:50:12	0
727278	99	74	68,4	cyclictest	727212	-21	kworker/u4:4+events_unbound	07:35:01	1
727276	99	73	61,9	cyclictest	796446	-21	kworker/u4:8+events_unbound	10:10:35	0
727278	99	69	63,4	cyclictest	879853	-21	kworker/u4:1+events_unbound	11:30:01	1
727278	99	68	61,4	cyclictest	836108	-21	kworker/u4:9+events_unbound	10:50:13	1
727278	99	67	60,5	cyclictest	713548	-21	kworker/u4:5+events_unbound	07:10:01	1
727278	99	66	57,7	cyclictest	901373	-21	kworker/u4:17+events_unbound	11:55:01	1
727278	99	64	55,6	cyclictest	716119	-21	kworker/u4:13+events_unbound	07:20:05	1
727278	99	63	56,5	cyclictest	836108	-21	kworker/u4:9+events_unbound	10:40:38	1
727278	99	63	47,7	cyclictest	738819	-21	kworker/u4:10+events_unbound	09:30:33	1
727276	99	63	52,5	cyclictest	849421	-21	kworker/u4:2+events_unbound	11:15:04	0
727276	99	63	40,13	cyclictest	879854	-21	kworker/u4:2+nfsiod	11:30:11	0
727276	99	62	53,6	cyclictest	796445	-21	kworker/u4:7+events_unbound	10:30:35	0
727276	99	62	51,8	cyclictest	378	-21	dbus-daemon	11:50:48	0
727278	99	61	45,7	cyclictest	914690	-21	kworker/u4:0+events_unbound	12:25:58	1
727276	99	61	5,46	cyclictest	0	-21	swapper/0	12:20:12	0
727278	99	59	52,5	cyclictest	905804	-21	kworker/u4:4+events_unbound	12:10:02	1
727276	99	59	51,6	cyclictest	755668	-21	kworker/u4:12+events_unbound	09:13:46	0
727278	99	58	51,5	cyclictest	849422	-21	kworker/u4:6+events_unbound	11:10:42	1
727278	99	58	50,6	cyclictest	731086	-21	kworker/u4:3+events_unbound	07:50:11	1
727276	99	58	52,5	cyclictest	738818	-21	kworker/u4:9+events_unbound	08:00:04	0
727276	99	58	47,9	cyclictest	746670	-21	kworker/u4:6+events_unbound	08:50:27	0
727276	99	58	32,21	cyclictest	907977	-21	apt-get	12:00:11	0
727276	99	58	25,26	cyclictest	0	-21	swapper/0	09:15:40	0
727278	99	57	51,4	cyclictest	736190	-21	kworker/u4:7+events_unbound	09:05:02	1
727278	99	57	49,6	cyclictest	836108	-21	kworker/u4:9+events_unbound	10:45:39	1
727278	99	57	48,6	cyclictest	738818	-21	kworker/u4:9+events_unbound	08:30:00	1
727276	99	57	47,7	cyclictest	731083	-21	kworker/u4:0+events_unbound	09:20:32	0
727278	99	56	48,6	cyclictest	713545	-21	kworker/u4:1+events_unbound	07:15:03	1
727278	99	56	47,5	cyclictest	940656	-21	kworker/u4:5+events_unbound	12:37:59	1
727278	99	56	45,8	cyclictest	0	-21	swapper/1	09:20:29	1
727278	99	56	42,10	cyclictest	864042	-21	modprobe	11:10:00	1
727278	99	56	36,7	cyclictest	731084	-21	kworker/u4:1+events_unbound	08:40:21	1
727276	99	56	6,43	cyclictest	855720	-21	ssh	11:00:19	0
727276	99	56	49,5	cyclictest	760999	-21	kworker/u4:6+events_unbound	09:50:59	0
727276	99	56	49,5	cyclictest	760999	-21	kworker/u4:6+events_unbound	09:50:58	0
727276	99	56	3,18	cyclictest	736221	-21	apt-get	07:45:09	0
727278	99	55	48,4	cyclictest	884273	-21	kworker/u4:7+events_unbound	11:50:02	1
727278	99	55	44,7	cyclictest	849423	-21	kworker/u4:8+xprtiod	11:00:09	1
727276	99	55	47,6	cyclictest	868469	-21	latency_hist	11:15:01	0
727276	99	55	46,6	cyclictest	782158	-21	/usr/sbin/munin	09:35:40	0
727276	99	55	38,11	cyclictest	733643	-21	modprobe	07:34:59	0
727278	99	54	47,5	cyclictest	803876	-21	ssh	10:00:34	1
727278	99	54	37,7	cyclictest	17	1	rcu_preempt	12:00:19	1
727276	99	54	41,9	cyclictest	809465	-21	ssh	10:06:41	0
727276	99	54	41,9	cyclictest	809465	-21	ssh	10:06:40	0
727278	99	53	44,6	cyclictest	762731	-21	modprobe	09:15:00	1
727278	99	53	43,7	cyclictest	0	-21	swapper/1	10:25:31	1
727276	99	53	45,5	cyclictest	730206	-21	df_abs	07:20:17	0
727278	99	52	45,5	cyclictest	821117	-21	gltestperf	10:20:20	1
727276	99	52	45,5	cyclictest	737548	-21	kworker/u4:5+events_unbound	07:53:47	0
727276	99	52	43,6	cyclictest	939769	-21	unixbench-2d	12:35:39	0
727276	99	52	17,19	cyclictest	0	-21	swapper/0	11:55:20	0
727278	99	51	43,5	cyclictest	921024	-21	/usr/sbin/munin	12:15:11	1
727278	99	51	42,7	cyclictest	796445	-21	kworker/u4:7-rpciod	09:55:21	1
727278	99	51	41,7	cyclictest	738819	-21	kworker/u4:10+events_unbound	07:55:13	1
727278	99	51	40,8	cyclictest	816381	-21	aten_r7power_en	10:15:17	1
727278	99	50	43,5	cyclictest	882848	-21	proc_pri	11:30:46	1
727278	99	50	43,5	cyclictest	716119	-21	kworker/u4:13+events_unbound	07:45:12	1
727278	99	50	36,5	cyclictest	901366	-21	kworker/u4:8+events_unbound	11:55:50	1
727276	99	50	43,5	cyclictest	742654	-21	kworker/u4:17+events_unbound	08:22:59	0
727276	99	50	42,5	cyclictest	752055	-21	/usr/sbin/munin	08:45:15	0
727276	99	50	41,6	cyclictest	852486	-21	/usr/sbin/munin	10:55:41	0
727276	99	50	40,7	cyclictest	895858	-21	sendmail_mailqu	11:45:35	0
727278	99	49	43,4	cyclictest	0	-21	swapper/1	08:15:15	1
727276	99	49	43,4	cyclictest	747061	-21	df_abs	08:25:19	0
727276	99	49	42,5	cyclictest	716119	-21	kworker/u4:13+events_unbound	07:29:00	0
727276	99	49	41,5	cyclictest	0	-21	swapper/0	10:35:31	0
727276	99	49	39,6	cyclictest	913096	-21	ntp_kernel_pll_	12:05:29	0
727276	99	49	39,6	cyclictest	0	-21	swapper/0	11:05:36	0
727276	99	49	38,9	cyclictest	800957	-21	kworker/u4:6-rpciod	10:15:37	0
727276	99	49	27,16	cyclictest	789658	-21	apt-get	09:45:11	0
727278	99	48	32,5	cyclictest	796445	-21	kworker/u4:7+events_unbound	10:05:34	1
727278	99	48	32,5	cyclictest	796445	-21	kworker/u4:7+events_unbound	10:05:33	1
727278	99	48	29,6	cyclictest	849422	-21	kworker/u4:6+events_unbound	10:55:39	1
727276	99	48	41,5	cyclictest	821013	-21	tune2fs	10:20:20	0
727276	99	48	41,5	cyclictest	799543	-21	/usr/sbin/munin	09:55:37	0
727276	99	48	41,5	cyclictest	738819	-21	kworker/u4:10+events_unbound	07:58:00	0
727276	99	48	40,6	cyclictest	776854	-21	sed	09:30:23	0
727276	99	48	40,6	cyclictest	727212	-21	kworker/u4:4+events_unbound	08:10:01	0
727276	99	48	36,8	cyclictest	0	-21	swapper/0	12:30:36	0
727276	99	48	28,17	cyclictest	0	-21	swapper/0	12:20:01	0
727276	99	48	28,17	cyclictest	0	-21	swapper/0	11:25:36	0
727276	99	48	2,15	cyclictest	917334	-21	netstat	12:10:23	0
727276	99	48	20,17	cyclictest	750604	-21	munin-run	08:40:00	0
727278	99	47	6,32	cyclictest	917554	-21	ssh	12:10:32	1
727278	99	47	41,4	cyclictest	778393	-21	kworker/u4:2-rpciod	09:35:32	1
727278	99	47	39,6	cyclictest	772186	-21	/usr/sbin/munin	09:25:18	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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