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 all highest latencies:

System rack5slot7s.osadl.org (updated Sat Apr 11, 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
16934	2	2460	2201,100	sleep0	0	-21	swapper	19:09:34	0
17030	99	161	14,122	cyclictest	16797	-21	apt-config	22:25:09	0
17030	99	160	15,24	cyclictest	25620	-21	munin-run	20:00:02	0
17030	99	159	16,97	cyclictest	28832	-21	apt-get	20:22:04	0
17030	99	158	17,24	cyclictest	15266	-21	df_inode	22:15:30	0
17030	99	158	12,122	cyclictest	29986	-21	sshd	20:25:18	0
17030	99	157	9,108	cyclictest	20156	-21	cat	22:45:03	0
17030	99	157	22,28	cyclictest	17128	-21	apt-get	19:10:20	0
17030	99	157	18,115	cyclictest	4530	-21	apt-get	00:31:35	0
17030	99	157	17,24	cyclictest	1413	-21	/usr/sbin/munin	00:10:52	0
17030	99	157	15,98	cyclictest	20684	-21	/usr/sbin/munin	19:30:10	0
17030	99	157	14,117	cyclictest	21026	-21	/usr/sbin/munin	22:50:52	0
17030	99	156	9,122	cyclictest	1362	-21	wc	00:10:04	0
17030	99	156	15,117	cyclictest	12050	-21	df	21:55:23	0
17030	99	155	23,21	cyclictest	19309	-21	sh	22:40:01	0
17030	99	155	19,34	cyclictest	3319	-21	irqstats	21:00:40	0
17030	99	155	15,24	cyclictest	4111	-21	irqstats	21:05:40	0
17030	99	155	14,23	cyclictest	32490	-21	df	20:40:25	0
17030	99	155	13,117	cyclictest	25969	-21	sort	20:00:42	0
17030	99	155	13,117	cyclictest	2148	-21	grep	20:51:00	0
17030	99	155	11,28	cyclictest	23511	-21	sort	19:46:16	0
17030	99	155	11,22	cyclictest	972	-21	load	20:45:42	0
17030	99	154	19,108	cyclictest	29869	-21	apt-get	23:45:19	0
17030	99	154	12,120	cyclictest	16689	-21	/usr/sbin/munin	22:25:05	0
17030	99	154	10,118	cyclictest	26133	-21	missed_timers	23:20:47	0
17030	99	153	9,120	cyclictest	14259	-21	cron	22:10:01	0
17030	99	153	39,22	cyclictest	19015	-21	latency_hist	19:20:05	0
17030	99	153	21,27	cyclictest	21482	-21	apt-get	19:35:22	0
17030	99	153	17,37	cyclictest	28114	-21	users	23:31:06	0
17030	99	153	16,116	cyclictest	28837	-21	munin-run	20:20:03	0
17030	99	153	14,115	cyclictest	28361	-21	diskstats	23:35:31	0
17030	99	153	10,116	cyclictest	5782	-21	wc	00:35:30	0
17030	99	152	17,112	cyclictest	9679	-21	diskstats	21:40:32	0
17030	99	152	16,29	cyclictest	26658	-21	/usr/sbin/munin	23:26:02	0
17030	99	152	16,24	cyclictest	21920	-21	df	22:55:23	0
17030	99	152	12,117	cyclictest	31244	-21	sendmail_mailtr	20:30:59	0
17030	99	152	11,115	cyclictest	8743	-21	/usr/sbin/munin	21:35:31	0
17030	99	152	11,101	cyclictest	22830	-21	uname	23:00:41	0
17030	99	152	10,121	cyclictest	20872	-21	grep	22:46:04	0
17030	99	151	33,97	cyclictest	27211	-21	sshd	20:07:40	0
17030	99	151	16,24	cyclictest	2922	-21	munin-run	00:20:02	0
17030	99	151	16,111	cyclictest	7155	-21	apt-get	21:25:19	0
17030	99	151	11,116	cyclictest	8382	-21	fgrep	21:31:00	0
17030	99	151	11,115	cyclictest	482	-21	who	00:01:07	0
17030	99	151	10,100	cyclictest	18512	-21	munin-plugin-st	22:35:01	0
17030	99	150	29,99	cyclictest	0	-21	swapper	21:50:54	0
17030	99	150	22,102	cyclictest	24238	-21	apt-get	23:10:22	0
17030	99	150	19,23	cyclictest	10363	-21	apt-get	21:45:19	0
17030	99	150	18,24	cyclictest	6236	-21	latency_hist	21:20:01	0
17030	99	150	15,24	cyclictest	12773	-21	/usr/sbin/munin	22:00:48	0
17030	99	150	11,24	cyclictest	19785	-21	sh	19:25:01	0
17030	99	149	12,38	cyclictest	3023	-21	munin-run	21:00:02	0
17030	99	149	11,22	cyclictest	111	-21	systemd-journal	22:15:01	0
17030	99	148	20,28	cyclictest	6470	-21	diskstats	21:20:33	0
17030	99	148	16,109	cyclictest	31696	-21	memory	23:55:42	0
17030	99	148	12,23	cyclictest	29185	-21	diskstats	23:40:33	0
17030	99	148	12,109	cyclictest	31126	-21	cut	23:50:56	0
17030	99	147	13,111	cyclictest	4843	-21	diskstats	21:10:33	0
17030	99	147	13,111	cyclictest	22999	-21	munin-run	19:45:01	0
17030	99	147	12,22	cyclictest	3670	-21	unixbench_singl	00:21:01	0
17030	99	147	11,99	cyclictest	31567	-21	/usr/sbin/munin	20:35:47	0
17030	99	147	11,25	cyclictest	27958	-21	sed	20:11:03	0
17030	99	147	10,26	cyclictest	25281	-21	missed_timers	23:15:46	0
17030	99	146	20,105	cyclictest	24129	-21	apt-get	19:50:19	0
17030	99	146	16,25	cyclictest	19994	-21	/usr/sbin/munin	19:25:28	0
17030	99	145	19,100	cyclictest	4532	-21	munin-run	00:30:02	0
17030	99	143	16,23	cyclictest	23756	-21	ntp_states	23:05:49	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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