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 May 23, 2026 00:44:08)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
295748	99	106	97,7	cyclictest	401103	-21	kworker/u4:8+events_unbound	23:16:50	1
295747	99	106	97,7	cyclictest	334325	-21	kworker/u4:11+events_unbound	21:26:37	0
295748	99	104	97,5	cyclictest	343359	-21	kworker/u4:9+events_unbound	21:31:36	1
295748	99	100	92,6	cyclictest	497798	-21	kworker/u4:8+events_unbound	00:33:50	1
295748	99	96	90,4	cyclictest	352332	-21	kworker/u4:0+events_unbound	22:01:39	1
295747	99	87	79,6	cyclictest	361385	-21	kworker/u4:11+events_unbound	22:31:42	0
295748	99	86	79,5	cyclictest	470774	-21	kworker/u4:9+events_unbound	23:52:46	1
295748	99	86	79,5	cyclictest	470774	-21	kworker/u4:9+events_unbound	23:52:45	1
295747	99	85	77,6	cyclictest	387588	-21	kworker/u4:0+events_unbound	22:26:42	0
295748	99	84	64,7	cyclictest	475930	-21	kworker/u4:7+events_unbound	23:57:54	1
295747	99	84	77,5	cyclictest	317606	-21	kworker/u4:8+events_unbound	21:11:34	0
295748	99	83	77,4	cyclictest	313677	-21	kworker/u4:0+events_unbound	20:31:26	1
295748	99	81	73,6	cyclictest	440738	-21	kworker/u4:0+events_unbound	00:05:01	1
295748	99	81	73,6	cyclictest	440738	-21	kworker/u4:0+events_unbound	00:05:00	1
295748	99	77	68,7	cyclictest	383142	-21	kworker/u4:14+events_unbound	22:21:40	1
295748	99	77	58,7	cyclictest	458002	-21	kworker/u4:3+events_unbound	23:36:54	1
295747	99	77	68,6	cyclictest	287303	-21	kworker/u4:3+events_unbound	19:11:16	0
295748	99	76	68,6	cyclictest	480448	-21	kworker/u4:14+events_unbound	00:23:41	1
295747	99	75	65,5	cyclictest	352332	-21	kworker/u4:0+events_unbound	21:46:36	0
295747	99	75	64,8	cyclictest	326173	-21	kworker/u4:18+events_unbound	21:16:34	0
295748	99	74	68,4	cyclictest	497799	-21	kworker/u4:10+events_unbound	00:28:45	1
295747	99	74	67,5	cyclictest	401100	-21	kworker/u4:1+events_unbound	22:36:43	0
295748	99	72	64,6	cyclictest	431841	-21	kworker/u4:3+events_unbound	23:11:48	1
295747	99	72	64,6	cyclictest	352332	-21	kworker/u4:0+events_unbound	22:11:41	0
295748	99	70	63,5	cyclictest	309855	-21	kworker/u4:4+events_unbound	20:30:02	1
295747	99	70	57,5	cyclictest	449700	-21	kworker/u4:12+events_unbound	00:13:31	0
295747	99	69	63,4	cyclictest	405583	-21	kworker/u4:3+events_unbound	22:46:46	0
295747	99	66	52,9	cyclictest	462500	-21	ssh	23:41:58	0
295748	99	65	58,5	cyclictest	68548	-21	kworker/u4:8+events_unbound	19:10:02	1
295748	99	65	56,7	cyclictest	317602	-21	kworker/u4:2+events_unbound	20:45:02	1
295747	99	65	56,7	cyclictest	311127	-21	kworker/u4:10+events_unbound	20:10:01	0
295748	99	64	46,5	cyclictest	338855	-21	kworker/u4:7+events_unbound	21:36:36	1
295747	99	64	46,15	cyclictest	53	-21	kswapd0	00:10:00	0
295748	99	63	54,6	cyclictest	53	-21	kswapd0	00:40:00	1
295747	99	63	55,6	cyclictest	320173	-21	kworker/u4:4+events_unbound	21:01:32	0
295747	99	63	55,5	cyclictest	466947	-21	kworker/u4:1+events_unbound	23:50:01	0
295747	99	63	53,7	cyclictest	37	-21	kcompactd0	21:54:58	0
295748	99	62	48,11	cyclictest	0	-21	swapper/1	21:10:12	1
295748	99	61	54,5	cyclictest	309854	-21	kworker/u4:3+events_unbound	20:05:01	1
295748	99	61	50,7	cyclictest	440738	-21	kworker/u4:0+events_unbound	00:10:04	1
295748	99	60	51,6	cyclictest	313677	-21	kworker/u4:0+events_unbound	20:51:32	1
295747	99	60	54,4	cyclictest	493911	-21	kworker/u4:5+events_unbound	00:20:34	0
295748	99	59	52,5	cyclictest	458001	-21	kworker/u4:2+events_unbound	23:45:02	1
295748	99	59	49,7	cyclictest	298259	-21	kworker/u4:14+events_unbound	19:25:01	1
295748	99	59	46,10	cyclictest	0	-21	swapper/1	22:45:14	1
295748	99	59	45,6	cyclictest	401102	-21	kworker/u4:2+events_unbound	22:56:47	1
295748	99	59	40,7	cyclictest	440739	-21	kworker/u4:1+events_unbound	23:30:41	1
295747	99	59	51,6	cyclictest	317605	-21	kworker/u4:6+events_unbound	21:21:35	0
295748	99	58	49,7	cyclictest	458002	-21	kworker/u4:3+events_unbound	23:40:11	1
295748	99	58	43,6	cyclictest	440738	-21	kworker/u4:0+events_unbound	00:09:59	1
295747	99	58	50,6	cyclictest	311126	-21	kworker/u4:9+events_unbound	20:20:01	0
295747	99	58	50,5	cyclictest	15	1	ktimers/0	23:36:46	0
295747	99	58	48,7	cyclictest	447645	-21	/usr/sbin/munin	23:25:20	0
295747	99	58	46,8	cyclictest	53	-21	kswapd0	00:40:01	0
295747	99	57	34,21	cyclictest	315281	-21	aten2__	20:25:20	0
295748	99	56	49,5	cyclictest	396582	-21	kworker/u4:7+events_unbound	22:30:16	1
295747	99	55	48,5	cyclictest	484941	-21	kworker/u4:3+events_unbound	00:16:59	0
295747	99	55	48,5	cyclictest	295745	-21	cyclictest	22:19:56	0
295747	99	55	47,6	cyclictest	295745	-21	cyclictest	00:04:23	0
295747	99	55	47,6	cyclictest	295745	-21	cyclictest	00:04:23	0
295747	99	55	36,16	cyclictest	442462	-21	latency_hist	23:20:01	0
295747	99	55	33,7	cyclictest	417392	-21	timerwakeupswit	22:50:37	0
295748	99	54	46,6	cyclictest	295745	-21	cyclictest	21:54:57	1
295748	99	54	36,6	cyclictest	338856	-21	kworker/u4:8+events_unbound	22:17:45	1
295747	99	54	47,5	cyclictest	361385	-21	kworker/u4:11+events_unbound	22:00:15	0
295747	99	54	46,6	cyclictest	409448	-21	kworker/u4:5+events_unbound	23:00:04	0
295747	99	54	45,7	cyclictest	433	-21	systemd-network	23:50:20	0
295747	99	54	45,7	cyclictest	433	-21	systemd-network	23:50:20	0
295747	99	54	45,7	cyclictest	320164	-21	systemd	20:41:28	0
295748	99	52	41,7	cyclictest	0	-21	swapper/1	22:25:10	1
295747	99	52	45,5	cyclictest	462477	-21	kworker/u4:6+events_unbound	00:31:58	0
295747	99	52	45,5	cyclictest	434670	-21	/usr/sbin/munin	23:10:33	0
295747	99	52	44,6	cyclictest	369726	-21	kworker/u4:4+events_unbound	22:06:39	0
295747	99	52	38,12	cyclictest	350404	-21	fschecks_time	21:35:20	0
295748	99	51	44,5	cyclictest	332562	-21	/usr/sbin/munin	21:15:19	1
295748	99	51	44,5	cyclictest	298256	-21	kworker/u4:11+events_unbound	19:36:22	1
295748	99	51	44,4	cyclictest	0	-21	swapper/1	21:25:26	1
295748	99	51	43,5	cyclictest	381596	-21	/usr/sbin/munin	22:10:24	1
295748	99	51	42,7	cyclictest	359054	-21	aten_r7power_en	21:45:18	1
295748	99	50	43,5	cyclictest	356859	-21	kworker/u4:2+events_unbound	21:56:37	1
295748	99	50	41,6	cyclictest	443198	-21	gltestperf	23:20:25	1
295748	99	50	41,6	cyclictest	0	-21	swapper/1	23:00:35	1
295747	99	50	43,5	cyclictest	390830	-21	cat	22:20:38	0
295747	99	50	41,7	cyclictest	303528	-21	latency_hist	19:40:01	0
295748	99	49	42,5	cyclictest	306554	-21	fschecks_time	19:50:19	1
295748	99	49	41,6	cyclictest	318539	-21	sendmail_mailqu	20:35:33	1
295748	99	49	41,5	cyclictest	308597	-21	awk	20:00:01	1
295748	99	49	39,7	cyclictest	352332	-21	kworker/u4:0+events_unbound	21:40:17	1
295747	99	49	42,5	cyclictest	431840	-21	kworker/u4:2+events_unbound	23:31:13	0
295747	99	49	41,5	cyclictest	368825	-21	mailstats	21:55:39	0
295747	99	49	41,5	cyclictest	0	-21	swapper/0	22:40:35	0
295747	99	49	41,5	cyclictest	0	-21	swapper/0	21:40:29	0
295747	99	49	40,7	cyclictest	324926	-21	idleruntime-cro	20:59:59	0
295748	99	48	42,4	cyclictest	302087	-21	systemd	19:31:19	1
295748	99	48	41,5	cyclictest	491302	-21	/usr/sbin/munin	00:15:16	1
295748	99	48	41,5	cyclictest	311181	-21	grep	20:10:01	1
295748	99	48	40,6	cyclictest	409449	-21	kworker/u4:7+events_unbound	22:41:44	1
295748	99	48	40,5	cyclictest	0	-21	swapper/1	22:50:32	1
295748	99	48	38,8	cyclictest	336948	-21	aten_r7power_en	21:20:21	1
295747	99	48	41,5	cyclictest	317828	-21	aten2__	20:35:14	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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