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 highest latencies:

System rack5slot7s.osadl.org (updated Mon Aug 24, 2026 00:45:12)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
11910	2	2423	2168,92	sleep0	0	-21	swapper	19:06:47	0
12314	99	161	16,117	cyclictest	18452	-21	date	23:05:06	0
12314	99	160	42,97	cyclictest	16403	-21	ntp_states	22:50:50	0
12314	99	159	18,113	cyclictest	3010	-21	apt-get	21:30:18	0
12314	99	159	12,39	cyclictest	12838	-21	find	19:10:55	0
12314	99	159	11,40	cyclictest	30342	-21	grep	00:15:03	0
12314	99	158	18,26	cyclictest	3872	-21	apt-get	21:35:31	0
12314	99	157	20,26	cyclictest	27870	-21	apt-get	00:00:28	0
12314	99	157	16,24	cyclictest	25058	-21	apt	23:45:02	0
12314	99	157	14,100	cyclictest	25954	-21	apt-config	23:50:09	0
12314	99	157	12,25	cyclictest	18403	-21	apt-get	23:06:38	0
12314	99	156	12,103	cyclictest	13894	-21	cat	22:35:41	0
12314	99	156	10,122	cyclictest	8626	-21	grep	22:01:01	0
12314	99	155	15,114	cyclictest	31485	-21	memory	00:20:45	0
12314	99	154	12,117	cyclictest	21715	-21	munin-plugin-st	20:05:01	0
12314	99	154	12,117	cyclictest	19532	-21	apt-get	23:10:20	0
12314	99	154	10,118	cyclictest	6862	-21	rt-features	21:50:57	0
12314	99	153	18,110	cyclictest	21328	-21	irqstats	23:20:39	0
12314	99	153	15,24	cyclictest	19258	-21	dpkg	19:50:15	0
12314	99	153	13,115	cyclictest	4862	-21	sshd	21:40:14	0
12314	99	153	12,27	cyclictest	12643	-21	wc	22:26:01	0
12314	99	153	12,117	cyclictest	32343	-21	tr	00:25:50	0
12314	99	152	21,104	cyclictest	28830	-21	apt-get	00:05:30	0
12314	99	151	35,95	cyclictest	672	-21	tr	00:30:48	0
12314	99	151	22,28	cyclictest	1419	-21	apt-get	21:20:20	0
12314	99	151	20,27	cyclictest	14496	-21	apt-get	22:40:21	0
12314	99	151	15,114	cyclictest	8858	-21	apt	22:05:13	0
12314	99	151	14,27	cyclictest	27250	-21	sed	20:36:04	0
12314	99	151	12,116	cyclictest	10277	-21	head	22:11:03	0
12314	99	151	10,114	cyclictest	22544	-21	ls	23:26:03	0
12314	99	150	9,115	cyclictest	17395	-21	grep	22:56:01	0
12314	99	150	35,97	cyclictest	7241	-21	apt-get	21:55:13	0
12314	99	150	17,46	cyclictest	16872	-21	df_inode	19:35:32	0
12314	99	150	15,111	cyclictest	28427	-21	uname	20:45:42	0
12314	99	150	12,99	cyclictest	25818	-21	users	23:46:06	0
12314	99	150	11,114	cyclictest	29341	-21	ntp_kernel_pll_	20:50:50	0
12314	99	150	10,116	cyclictest	15881	-21	grep	22:46:04	0
12314	99	149	21,26	cyclictest	11395	-21	diskstats	22:20:35	0
12314	99	149	17,26	cyclictest	15170	-21	/usr/sbin/munin	19:25:22	0
12314	99	149	16,95	cyclictest	21930	-21	diskstats	20:05:31	0
12314	99	149	15,112	cyclictest	30899	-21	memory	21:00:46	0
12314	99	149	14,98	cyclictest	1304	-21	readlink	21:20:01	0
12314	99	149	14,109	cyclictest	12877	-21	apt-get	22:30:18	0
12314	99	149	13,25	cyclictest	11162	-21	munin-run	22:20:03	0
12314	99	149	13,112	cyclictest	1846	-21	sshd	00:37:44	0
12314	99	149	12,36	cyclictest	14375	-21	/usr/sbin/munin	19:20:12	0
12314	99	149	12,29	cyclictest	22740	-21	modprobe	23:30:05	0
12314	99	149	12,113	cyclictest	2638	-21	grep	21:25:59	0
12314	99	149	10,100	cyclictest	23210	-21	ls	20:11:02	0
12314	99	148	18,26	cyclictest	20203	-21	apt-get	19:55:31	0
12314	99	148	15,23	cyclictest	16070	-21	df	19:30:28	0
12314	99	148	15,112	cyclictest	16882	-21	snmpd	21:00:01	0
12314	99	148	14,26	cyclictest	13542	-21	diskstats	19:15:28	0
12314	99	148	14,23	cyclictest	20325	-21	apt-get	23:15:14	0
12314	99	148	13,26	cyclictest	23717	-21	ntp_offset	20:15:52	0
12314	99	148	12,111	cyclictest	18047	-21	mailstats	19:40:58	0
12314	99	148	11,117	cyclictest	27681	-21	apt-get	00:00:02	0
12314	99	148	11,112	cyclictest	23536	-21	munin-node	23:35:12	0
12314	99	148	10,113	cyclictest	25225	-21	uname	20:25:41	0
12314	99	146	18,23	cyclictest	30520	-21	df_inode	00:15:30	0
12314	99	146	15,105	cyclictest	32248	-21	apt-get	21:10:18	0
12314	99	146	10,24	cyclictest	24241	-21	apt-get	20:20:14	0
12314	99	145	18,102	cyclictest	26524	-21	apt	20:35:01	0
12314	99	145	12,27	cyclictest	12784	-21	systemd-journal	19:45:27	0
12314	99	144	19,98	cyclictest	31453	-21	apt-get	21:05:20	0
12314	99	144	18,105	cyclictest	27561	-21	diskstats	20:40:32	0
12314	99	143	14,24	cyclictest	6345	-21	munin-plugin-st	21:50:00	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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