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 100 highest latencies:

System rack5slot7s.osadl.org (updated Sun Jun 21, 2026 00:45:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
27220	2	2449	2213,90	sleep0	0	-21	swapper	19:07:37	0
27532	99	170	11,129	cyclictest	1274	-21	apt-get	23:01:41	0
27532	99	161	16,119	cyclictest	31295	-21	apt-get	19:27:07	0
27532	99	160	16,102	cyclictest	22835	-21	apt-get	21:56:15	0
27532	99	158	32,19	cyclictest	346	-21	cat	22:51:02	0
27532	99	158	17,113	cyclictest	29654	-21	apt-get	22:35:23	0
27532	99	157	16,24	cyclictest	1270	-21	memory	19:41:31	0
27532	99	157	14,117	cyclictest	3506	-21	apt-get	19:55:28	0
27532	99	157	14,100	cyclictest	15485	-21	/usr/sbin/munin	00:26:03	0
27532	99	157	11,26	cyclictest	30645	-21	/usr/sbin/munin	22:40:53	0
27532	99	156	21,24	cyclictest	15547	-21	grep	21:06:00	0
27532	99	156	16,118	cyclictest	29611	-21	apt-get	19:20:25	0
27532	99	156	16,115	cyclictest	342	-21	/usr/sbin/munin	19:35:54	0
27532	99	155	19,25	cyclictest	10795	-21	munin-run	20:40:02	0
27532	99	155	15,24	cyclictest	31539	-21	df	22:45:24	0
27532	99	154	25,108	cyclictest	17626	-21	ntpq	21:20:48	0
27532	99	154	17,24	cyclictest	5185	-21	apt	20:05:01	0
27532	99	154	17,21	cyclictest	6543	-21	munin-run	23:30:02	0
27532	99	154	12,100	cyclictest	29559	-21	dpkg	19:20:08	0
27532	99	154	11,25	cyclictest	10283	-21	wc	23:50:57	0
27532	99	153	27,22	cyclictest	1851	-21	apt-get	19:45:19	0
27532	99	153	20,27	cyclictest	11024	-21	diskstats	20:40:31	0
27532	99	153	18,107	cyclictest	15713	-21	apt-get	21:10:18	0
27532	99	153	17,26	cyclictest	5399	-21	diskstats	20:05:33	0
27532	99	153	16,114	cyclictest	22837	-21	munin-run	21:55:01	0
27532	99	153	13,116	cyclictest	7588	-21	munin-run	20:20:03	0
27532	99	153	11,116	cyclictest	13746	-21	cron	00:15:00	0
27532	99	153	10,122	cyclictest	17219	-21	apt	21:20:02	0
27532	99	152	41,22	cyclictest	20931	-21	processes	21:40:54	0
27532	99	152	16,24	cyclictest	28338	-21	munin-node	19:15:06	0
27532	99	152	15,112	cyclictest	17317	-21	memory	00:35:42	0
27532	99	151	31,21	cyclictest	31618	-21	/usr/sbin/munin	19:30:12	0
27532	99	151	22,28	cyclictest	8262	-21	apt-get	23:40:21	0
27532	99	151	17,24	cyclictest	20431	-21	munin-run	21:40:02	0
27532	99	151	17,111	cyclictest	2325	-21	apt-get	23:06:41	0
27532	99	151	15,19	cyclictest	14005	-21	munin-run	21:00:03	0
27532	99	151	14,23	cyclictest	8142	-21	munin-run	23:40:02	0
27532	99	151	13,117	cyclictest	8403	-21	munin-run	20:25:01	0
27532	99	151	13,115	cyclictest	8739	-21	snmpd	00:05:50	0
27532	99	151	10,117	cyclictest	25759	-21	uname	22:10:42	0
27532	99	151	10,100	cyclictest	11116	-21	mailstats	23:55:56	0
27532	99	150	9,106	cyclictest	11882	-21	interrupts	20:45:38	0
27532	99	150	21,28	cyclictest	16392	-21	diskstats	00:30:32	0
27532	99	150	17,111	cyclictest	26543	-21	irqstats	22:15:36	0
27532	99	150	15,24	cyclictest	2884	-21	memory	19:50:53	0
27532	99	150	14,112	cyclictest	9159	-21	df	23:45:23	0
27532	99	150	11,26	cyclictest	12503	-21	/usr/sbin/munin	20:50:41	0
27532	99	150	11,115	cyclictest	14549	-21	find	21:00:55	0
27532	99	149	9,26	cyclictest	3429	-21	apt-get	23:10:15	0
27532	99	149	12,23	cyclictest	14297	-21	awk	00:15:57	0
27532	99	149	12,111	cyclictest	9519	-21	grep	20:30:40	0
27532	99	149	11,116	cyclictest	1085	-21	wc	22:56:00	0
27532	99	148	21,101	cyclictest	18798	-21	users	21:26:35	0
27532	99	148	16,34	cyclictest	4933	-21	munin-run	23:20:01	0
27532	99	148	13,22	cyclictest	9203	-21	latency_hist	20:30:02	0
27532	99	148	12,23	cyclictest	6643	-21	apt-get	23:30:10	0
27532	99	148	12,112	cyclictest	23988	-21	/usr/sbin/munin	22:00:55	0
27532	99	148	12,112	cyclictest	15304	-21	grep	00:21:04	0
27532	99	148	11,112	cyclictest	19588	-21	/usr/sbin/munin	21:31:03	0
27532	99	148	10,114	cyclictest	6625	-21	grep	20:11:00	0
27532	99	147	17,24	cyclictest	11586	-21	diskstats	00:00:33	0
27532	99	147	14,92	cyclictest	29457	-21	users	22:31:05	0
27532	99	147	13,27	cyclictest	5152	-21	sshd	23:20:24	0
27532	99	147	10,113	cyclictest	27806	-21	sort	22:21:02	0
27532	99	146	22,22	cyclictest	25220	-21	awk	22:05:57	0
27532	99	144	15,103	cyclictest	28004	-21	/usr/sbin/munin	22:25:35	0
27532	99	143	13,24	cyclictest	22036	-21	cron	21:50:01	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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