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 Jul 05, 2026 00:45:09)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
436	2	2451	2211,96	sleep0	0	-21	swapper	19:06:39	0
861	99	163	17,118	cyclictest	3718	-21	apt-get	19:25:20	0
861	99	163	16,23	cyclictest	28841	-21	munin-run	21:55:04	0
861	99	160	19,117	cyclictest	25015	-21	df_inode	21:30:45	0
861	99	160	19,100	cyclictest	28839	-21	apt-get	21:56:24	0
861	99	160	13,44	cyclictest	23371	-21	/usr/sbin/munin	00:35:47	0
861	99	160	12,62	cyclictest	11764	-21	ps	20:10:55	0
861	99	159	14,119	cyclictest	5211	-21	apt-get	19:36:49	0
861	99	159	13,118	cyclictest	7228	-21	apt-get	19:45:16	0
861	99	158	22,30	cyclictest	17577	-21	diskstats	00:00:58	0
861	99	157	30,23	cyclictest	13570	-21	latency_hist	23:40:09	0
861	99	157	18,113	cyclictest	15317	-21	apt-get	23:51:22	0
861	99	156	19,110	cyclictest	17262	-21	apt-get	20:45:17	0
861	99	156	15,115	cyclictest	5211	-21	apt-get	19:35:03	0
861	99	156	12,102	cyclictest	12534	-21	if_eth0	20:16:03	0
861	99	156	11,120	cyclictest	12626	-21	sed	23:31:07	0
861	99	155	22,22	cyclictest	29994	-21	apt-get	22:00:17	0
861	99	155	18,109	cyclictest	23917	-21	apt-get	21:25:16	0
861	99	155	11,122	cyclictest	5793	-21	memory	22:50:45	0
861	99	154	27,19	cyclictest	0	-21	swapper	20:25:59	0
861	99	154	18,41	cyclictest	18748	-21	apt-get	20:56:16	0
861	99	154	17,27	cyclictest	13625	-21	apt-get	23:40:26	0
861	99	154	16,115	cyclictest	15319	-21	/usr/sbin/munin	23:50:05	0
861	99	154	15,25	cyclictest	31024	-21	memory	22:05:44	0
861	99	153	22,29	cyclictest	16465	-21	apt-get	20:40:19	0
861	99	153	17,38	cyclictest	27591	-21	memory	21:45:45	0
861	99	153	16,112	cyclictest	1667	-21	munin-node	19:15:06	0
861	99	153	14,23	cyclictest	15083	-21	memory	20:30:45	0
861	99	153	13,30	cyclictest	20075	-21	sshd	21:00:45	0
861	99	152	36,94	cyclictest	19843	-21	latency_hist	00:15:04	0
861	99	152	24,110	cyclictest	18290	-21	apt-get	00:05:19	0
861	99	152	18,111	cyclictest	13363	-21	diskstats	20:20:41	0
861	99	152	16,23	cyclictest	2803	-21	munin-run	19:20:02	0
861	99	152	13,24	cyclictest	21988	-21	grep	00:25:58	0
861	99	152	12,27	cyclictest	2019	-21	mailstats	22:25:58	0
861	99	152	11,100	cyclictest	22215	-21	cat	21:15:04	0
861	99	151	37,92	cyclictest	3579	-21	users	19:21:07	0
861	99	151	31,18	cyclictest	25738	-21	apt-get	21:35:20	0
861	99	151	16,26	cyclictest	26555	-21	/usr/sbin/munin	21:40:32	0
861	99	151	16,21	cyclictest	11841	-21	users	23:26:04	0
861	99	151	13,98	cyclictest	6503	-21	if_eth0	22:55:36	0
861	99	151	11,23	cyclictest	2634	-21	awk	22:30:49	0
861	99	151	10,26	cyclictest	7134	-21	cat	19:45:08	0
861	99	150	19,103	cyclictest	8985	-21	apt-get	19:55:21	0
861	99	150	12,39	cyclictest	23433	-21	grep	21:20:50	0
861	99	149	34,21	cyclictest	10135	-21	ls	23:16:02	0
861	99	149	25,105	cyclictest	1961	-21	snmpd	22:46:35	0
861	99	149	17,24	cyclictest	32615	-21	memory	22:15:44	0
861	99	149	17,22	cyclictest	20804	-21	df	00:20:24	0
861	99	148	16,25	cyclictest	15881	-21	memory	20:35:44	0
861	99	148	14,114	cyclictest	3845	-21	munin-run	22:40:03	0
861	99	148	10,98	cyclictest	7978	-21	wc	23:05:22	0
861	99	147	8,40	cyclictest	21418	-21	cat	21:10:04	0
861	99	147	17,105	cyclictest	19878	-21	apt-get	00:15:17	0
861	99	146	8,24	cyclictest	8191	-21	apt-get	19:50:19	0
861	99	146	21,28	cyclictest	16446	-21	apt-get	23:55:27	0
861	99	146	19,24	cyclictest	10389	-21	apt-get	23:20:16	0
861	99	146	18,24	cyclictest	9908	-21	df_inode	20:00:29	0
861	99	146	14,33	cyclictest	3965	-21	apt-get	22:40:12	0
861	99	146	12,40	cyclictest	1761	-21	munin-node	21:15:50	0
861	99	146	12,110	cyclictest	1961	-21	snmpd	23:00:26	0
861	99	146	11,28	cyclictest	9049	-21	sshd	23:10:45	0
861	99	145	10,26	cyclictest	18766	-21	sort	20:55:05	0
861	99	145	10,24	cyclictest	1121	-21	grep	22:20:53	0
861	99	144	18,24	cyclictest	1961	-21	snmpd	20:06:33	0
861	99	144	12,27	cyclictest	22878	-21	timerwakeupswit	00:31:04	0
861	99	142	15,24	cyclictest	32236	-21	users	22:11:06	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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