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 Tue Aug 04, 2026 12:45:09)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
15876	2	2441	2210,86	sleep0	0	-21	swapper	07:09:29	0
15978	99	175	11,41	cyclictest	10564	-21	/usr/sbin/munin	09:50:43	0
15978	99	166	17,107	cyclictest	24334	-21	apt-get	08:01:33	0
15978	99	165	16,24	cyclictest	21111	-21	apt-get	10:55:24	0
15978	99	161	20,112	cyclictest	25486	-21	apt-get	08:05:26	0
15978	99	159	16,117	cyclictest	32602	-21	/usr/sbin/munin	08:50:05	0
15978	99	159	16,117	cyclictest	17201	-21	/usr/sbin/munin	07:16:13	0
15978	99	159	15,119	cyclictest	30352	-21	apt-get	11:50:21	0
15978	99	158	22,29	cyclictest	30288	-21	apt-get	08:35:21	0
15978	99	158	15,24	cyclictest	1269	-21	/usr/sbin/munin	08:55:44	0
15978	99	157	8,106	cyclictest	15132	-21	grep	10:16:03	0
15978	99	157	17,113	cyclictest	22895	-21	apt-get	11:05:18	0
15978	99	157	15,101	cyclictest	14471	-21	munin-run	10:15:01	0
15978	99	157	15,100	cyclictest	13557	-21	cat	10:06:01	0
15978	99	156	22,28	cyclictest	8037	-21	diskstats	09:35:42	0
15978	99	156	15,117	cyclictest	8624	-21	apt-get	09:41:59	0
15978	99	156	13,118	cyclictest	16674	-21	wc	10:25:57	0
15978	99	156	12,120	cyclictest	3264	-21	/usr/sbin/munin	12:21:35	0
15978	99	156	11,120	cyclictest	6070	-21	cat	09:25:04	0
15978	99	156	10,26	cyclictest	24343	-21	sendmail	08:00:02	0
15978	99	155	18,110	cyclictest	5346	-21	apt-get	12:35:20	0
15978	99	155	17,26	cyclictest	18008	-21	irqstats	10:35:40	0
15978	99	154	17,113	cyclictest	27148	-21	memory	11:30:42	0
15978	99	154	14,24	cyclictest	20489	-21	memory	10:50:42	0
15978	99	154	13,116	cyclictest	27603	-21	apt-get	11:35:44	0
15978	99	154	13,110	cyclictest	26974	-21	modprobe	08:15:02	0
15978	99	153	29,19	cyclictest	1364	-21	grep	12:10:46	0
15978	99	153	16,25	cyclictest	21354	-21	df_inode	07:40:30	0
15978	99	153	16,112	cyclictest	19533	-21	munin-run	07:30:01	0
15978	99	153	15,114	cyclictest	19694	-21	memory	10:45:43	0
15978	99	153	13,114	cyclictest	11565	-21	latency	09:55:43	0
15978	99	153	12,25	cyclictest	16072	-21	/usr/sbin/munin	07:10:11	0
15978	99	153	11,26	cyclictest	2374	-21	ntpq	09:00:49	0
15978	99	152	14,114	cyclictest	6800	-21	apt-get	09:31:24	0
15978	99	152	12,99	cyclictest	21108	-21	cron	07:40:01	0
15978	99	152	11,25	cyclictest	18267	-21	sed	07:20:42	0
15978	99	152	11,115	cyclictest	626	-21	cut	08:51:15	0
15978	99	151	27,36	cyclictest	0	-21	swapper	12:31:08	0
15978	99	151	19,104	cyclictest	31766	-21	users	08:41:06	0
15978	99	151	15,94	cyclictest	4580	-21	df	09:15:27	0
15978	99	151	15,113	cyclictest	23927	-21	memory	11:10:43	0
15978	99	151	13,114	cyclictest	15450	-21	apt-get	10:20:20	0
15978	99	151	12,41	cyclictest	26063	-21	wc	11:25:04	0
15978	99	151	12,39	cyclictest	12259	-21	ls	10:00:26	0
15978	99	151	12,117	cyclictest	22692	-21	sed	07:46:05	0
15978	99	151	12,115	cyclictest	2508	-21	unixbench_singl	12:16:02	0
15978	99	151	10,121	cyclictest	6524	-21	grep	09:25:59	0
15978	99	150	77,51	cyclictest	31361	-21	sshd	11:55:43	0
15978	99	150	17,47	cyclictest	25199	-21	munin-run	11:20:03	0
15978	99	150	11,115	cyclictest	4050	-21	grep	12:25:56	0
15978	99	149	42,86	cyclictest	2947	-21	cpuspeed	09:05:25	0
15978	99	149	38,89	cyclictest	19092	-21	sendmail_mailst	10:40:58	0
15978	99	149	21,24	cyclictest	23079	-21	memory	07:50:45	0
15978	99	149	20,108	cyclictest	28763	-21	apt	11:40:14	0
15978	99	149	11,28	cyclictest	22534	-21	/usr/sbin/munin	11:01:04	0
15978	99	148	9,116	cyclictest	26317	-21	latency	11:25:43	0
15978	99	148	20,28	cyclictest	28144	-21	memory	08:20:46	0
15978	99	148	12,25	cyclictest	20420	-21	date	07:35:06	0
15978	99	148	11,27	cyclictest	520	-21	latency	12:05:41	0
15978	99	147	20,27	cyclictest	17044	-21	apt-get	10:30:20	0
15978	99	147	19,24	cyclictest	3685	-21	apt-get	09:10:23	0
15978	99	147	18,20	cyclictest	12784	-21	systemd-journal	09:50:01	0
15978	99	147	18,105	cyclictest	32285	-21	ntp_states	12:00:51	0
15978	99	147	13,22	cyclictest	28950	-21	ls	08:25:48	0
15978	99	147	13,111	cyclictest	29730	-21	memory	08:30:44	0
15978	99	146	13,25	cyclictest	29556	-21	/usr/sbin/munin	11:45:40	0
15978	99	144	10,24	cyclictest	27779	-21	apt	08:20:01	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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