OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #7

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8
Special All - All RT - Optimization - Ethernet - Thumbnails - Next

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: 50.5 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system

Characteristics of the 792 highest latencies:

System rack5slot7s.osadl.org (updated Mon Jun 01, 2026 12:45:08)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
22015	2	2438	2180,89	sleep0	0	-21	swapper	07:07:05	0
22384	99	167	22,102	cyclictest	1480	-21	memory	11:31:24	0
22384	99	166	20,117	cyclictest	11584	-21	munin-run	09:20:02	0
22384	99	160	17,26	cyclictest	11514	-21	df	12:30:25	0
22384	99	159	22,106	cyclictest	5157	-21	diskstats	08:40:34	0
22384	99	159	17,116	cyclictest	28807	-21	irqstats	07:46:07	0
22384	99	159	16,119	cyclictest	2743	-21	sshd	11:37:23	0
22384	99	159	15,26	cyclictest	23537	-21	munin-node	07:15:31	0
22384	99	159	15,119	cyclictest	24901	-21	apt-get	07:26:32	0
22384	99	159	13,24	cyclictest	24494	-21	awk	10:35:49	0
22384	99	158	17,116	cyclictest	10694	-21	sshd	12:25:24	0
22384	99	158	15,41	cyclictest	2764	-21	apt-get	11:41:04	0
22384	99	158	15,23	cyclictest	5738	-21	apt-get	08:45:59	0
22384	99	158	14,119	cyclictest	23424	-21	munin-node	07:15:08	0
22384	99	157	13,103	cyclictest	17988	-21	modprobe	10:00:01	0
22384	99	157	12,120	cyclictest	26817	-21	apt-get	07:35:14	0
22384	99	157	11,104	cyclictest	18700	-21	wc	10:01:38	0
22384	99	156	17,116	cyclictest	6982	-21	diskstats	08:50:37	0
22384	99	156	10,104	cyclictest	26663	-21	/usr/sbin/munin	10:50:12	0
22384	99	155	36,33	cyclictest	2188	-21	/usr/sbin/munin	08:20:53	0
22384	99	155	34,22	cyclictest	9809	-21	latency_hist	12:20:06	0
22384	99	155	17,26	cyclictest	30357	-21	df_inode	07:55:28	0
22384	99	155	15,116	cyclictest	30358	-21	diskstats	11:10:55	0
22384	99	155	15,114	cyclictest	7962	-21	/usr/sbin/munin	12:10:59	0
22384	99	155	11,120	cyclictest	973	-21	ls	11:30:06	0
22384	99	154	17,114	cyclictest	31783	-21	munin-run	11:20:02	0
22384	99	154	16,27	cyclictest	7826	-21	users	12:06:05	0
22384	99	153	9,103	cyclictest	1306	-21	/usr/sbin/munin	08:15:50	0
22384	99	153	24,20	cyclictest	25648	-21	sed	10:41:03	0
22384	99	153	18,36	cyclictest	26511	-21	munin-run	10:50:04	0
22384	99	153	14,115	cyclictest	4165	-21	wc	11:45:51	0
22384	99	153	13,99	cyclictest	11704	-21	apt-get	09:20:20	0
22384	99	153	13,27	cyclictest	32664	-21	/usr/sbin/munin	08:10:54	0
22384	99	153	13,26	cyclictest	20042	-21	snmpd	07:50:19	0
22384	99	152	8,119	cyclictest	29501	-21	grep	11:05:45	0
22384	99	152	18,111	cyclictest	10189	-21	diskstats	09:10:33	0
22384	99	152	15,113	cyclictest	14192	-21	df	09:35:26	0
22384	99	152	14,115	cyclictest	9456	-21	irqstats	09:05:40	0
22384	99	152	14,115	cyclictest	22272	-21	apt-get	10:26:23	0
22384	99	152	13,116	cyclictest	3057	-21	grep	08:25:57	0
22384	99	152	11,41	cyclictest	28441	-21	date	07:45:09	0
22384	99	152	11,119	cyclictest	6210	-21	systemctl	12:00:02	0
22384	99	151	72,35	cyclictest	12911	-21	munin-run	12:40:02	0
22384	99	151	19,104	cyclictest	16504	-21	apt-get	09:50:18	0
22384	99	151	17,111	cyclictest	20267	-21	ntp_states	10:10:48	0
22384	99	151	13,113	cyclictest	4926	-21	munin-run	08:40:03	0
22384	99	150	18,24	cyclictest	3540	-21	diskstats	08:30:33	0
22384	99	150	17,25	cyclictest	31185	-21	diskstats	08:00:31	0
22384	99	150	14,22	cyclictest	13935	-21	grep	09:31:06	0
22384	99	150	13,23	cyclictest	4805	-21	df	11:50:24	0
22384	99	149	37,22	cyclictest	28516	-21	cpuspeed	11:00:22	0
22384	99	149	18,105	cyclictest	31872	-21	apt-get	08:05:20	0
22384	99	149	14,23	cyclictest	16005	-21	awk	09:45:47	0
22384	99	148	19,105	cyclictest	8487	-21	apt-get	09:00:20	0
22384	99	148	17,21	cyclictest	0	-21	swapper	07:25:05	0
22384	99	148	15,46	cyclictest	19154	-21	apt	10:05:11	0
22384	99	147	19,28	cyclictest	23403	-21	/usr/sbin/munin	10:31:17	0
22384	99	147	19,102	cyclictest	32010	-21	df_inode	11:20:31	0
22384	99	147	13,25	cyclictest	20858	-21	diskstats	10:15:34	0
22384	99	147	10,112	cyclictest	9870	-21	cpu	12:20:29	0
22384	99	146	18,27	cyclictest	6441	-21	diskstats	12:00:31	0
22384	99	146	10,113	cyclictest	8287	-21	grep	08:56:03	0
22384	99	145	9,113	cyclictest	21942	-21	grep	10:20:54	0
22384	99	145	15,22	cyclictest	12497	-21	/usr/sbin/munin	09:25:37	0
22384	99	144	72,50	cyclictest	27635	-21	munin-node	10:55:12	0
22384	99	144	15,24	cyclictest	15014	-21	df	09:40:24	0
22384	99	144	11,112	cyclictest	25606	-21	kworker/u2:1	07:30:15	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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