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
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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 highest latencies:

System rack5slot7s.osadl.org (updated Thu Dec 25, 2025 00:45:08)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
23134	2	2428	2199,88	sleep0	0	-21	swapper	19:08:23	0
23358	99	169	20,27	cyclictest	10810	-21	apt-get	21:10:20	0
23358	99	169	18,25	cyclictest	1191	-21	apt-get	20:10:21	0
23358	99	161	16,121	cyclictest	7022	-21	apt-get	00:06:15	0
23358	99	160	15,101	cyclictest	24152	-21	munin-run	19:15:03	0
23358	99	159	14,119	cyclictest	4713	-21	apt-get	23:50:21	0
23358	99	159	10,123	cyclictest	7269	-21	cut	20:45:57	0
23358	99	158	13,101	cyclictest	25422	-21	apt-get	19:20:21	0
23358	99	157	16,101	cyclictest	1984	-21	apt-get	20:15:21	0
23358	99	157	13,119	cyclictest	27028	-21	apt	19:30:10	0
23358	99	156	33,21	cyclictest	23433	-21	sshd	22:24:21	0
23358	99	156	18,95	cyclictest	7024	-21	munin-run	00:05:05	0
23358	99	156	12,29	cyclictest	3491	-21	sshd	20:24:20	0
23358	99	155	21,25	cyclictest	9778	-21	apt-get	00:20:19	0
23358	99	155	14,118	cyclictest	388	-21	apt-get	20:05:20	0
23358	99	154	26,21	cyclictest	0	-21	swapper	23:20:36	0
23358	99	154	18,27	cyclictest	31237	-21	apt-get	19:55:21	0
23358	99	154	17,38	cyclictest	9099	-21	apt	21:00:00	0
23358	99	153	34,24	cyclictest	31545	-21	apt-get	23:15:20	0
23358	99	153	13,23	cyclictest	28739	-21	munin-run	19:40:02	0
23358	99	153	12,26	cyclictest	5999	-21	cat	20:40:07	0
23358	99	153	11,119	cyclictest	2010	-21	/usr/sbin/munin	23:30:59	0
23358	99	153	11,118	cyclictest	20167	-21	apt-get	22:05:28	0
23358	99	153	11,117	cyclictest	30587	-21	sed	23:06:03	0
23358	99	153	10,25	cyclictest	16506	-21	grep	21:41:11	0
23358	99	153	10,116	cyclictest	26576	-21	ps	19:25:51	0
23358	99	152	19,25	cyclictest	25240	-21	uptime	19:16:22	0
23358	99	152	17,95	cyclictest	10710	-21	munin-run	21:10:02	0
23358	99	152	14,24	cyclictest	26755	-21	apt	22:45:12	0
23358	99	152	12,118	cyclictest	17120	-21	sort	21:46:23	0
23358	99	152	11,41	cyclictest	32523	-21	mailstats	20:01:02	0
23358	99	151	35,96	cyclictest	29164	-21	apt-get	23:00:20	0
23358	99	151	21,24	cyclictest	24342	-21	apt-get	22:30:20	0
23358	99	151	14,40	cyclictest	4491	-21	cstates	20:30:24	0
23358	99	151	13,99	cyclictest	18060	-21	grep	21:51:00	0
23358	99	151	12,26	cyclictest	30682	-21	memory	19:50:43	0
23358	99	151	12,116	cyclictest	26759	-21	kworker/u2:4	22:50:13	0
23358	99	150	33,96	cyclictest	20040	-21	apt-config	22:05:05	0
23358	99	150	23,28	cyclictest	25253	-21	diskstats	22:35:33	0
23358	99	150	17,24	cyclictest	2416	-21	diskstats	23:35:35	0
23358	99	150	14,111	cyclictest	4691	-21	wc	23:50:05	0
23358	99	150	14,109	cyclictest	18597	-21	diskstats	21:55:34	0
23358	99	150	13,99	cyclictest	11709	-21	df_inode	21:15:30	0
23358	99	150	13,22	cyclictest	14890	-21	apt-get	21:35:30	0
23358	99	149	23,26	cyclictest	28515	-21	irqstats	22:55:40	0
23358	99	149	17,27	cyclictest	13229	-21	/usr/sbin/munin	21:25:23	0
23358	99	149	16,19	cyclictest	0	-21	swapper	21:00:58	0
23358	99	149	15,21	cyclictest	9601	-21	users	00:16:07	0
23358	99	149	14,111	cyclictest	8517	-21	wc	00:11:03	0
23358	99	149	12,26	cyclictest	21832	-21	sort	22:15:03	0
23358	99	149	10,26	cyclictest	11985	-21	grep	00:31:05	0
23358	99	148	18,104	cyclictest	30751	-21	apt-get	23:10:20	0
23358	99	148	17,105	cyclictest	29651	-21	apt-get	19:45:18	0
23358	99	148	15,23	cyclictest	3227	-21	df	23:40:27	0
23358	99	148	14,109	cyclictest	10891	-21	awk	00:25:51	0
23358	99	147	10,41	cyclictest	6023	-1	kworker/u3:3	21:20:11	0
23358	99	147	10,38	cyclictest	29578	-21	grep	19:45:04	0
23358	99	146	17,27	cyclictest	24240	-21	munin-run	22:30:02	0
23358	99	146	17,104	cyclictest	22026	-21	df_inode	22:15:29	0
23358	99	146	16,26	cyclictest	12271	-21	df_inode	00:35:28	0
23358	99	146	16,109	cyclictest	14124	-21	df	21:30:27	0
23358	99	146	13,109	cyclictest	5504	-21	/usr/sbin/munin	23:56:05	0
23358	99	145	15,107	cyclictest	4032	-21	find	20:25:57	0
23358	99	144	17,26	cyclictest	25963	-21	apt-get	22:40:21	0
23358	99	143	19,23	cyclictest	6261	-21	memory	20:40:41	0
23358	99	143	13,106	cyclictest	7813	-21	latency	20:50:44	0
23358	99	143	12,23	cyclictest	712	-21	/usr/sbin/munin	23:26:01	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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