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 Fri Jun 26, 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
30589	2	2445	2207,97	sleep0	0	-21	swapper	19:08:57	0
30751	99	176	15,138	cyclictest	16625	-21	apt-get	00:15:20	0
30751	99	171	19,37	cyclictest	5221	-21	apt-get	19:50:27	0
30751	99	163	16,122	cyclictest	26433	-21	apt	22:00:03	0
30751	99	162	18,119	cyclictest	21794	-21	df_inode	21:30:29	0
30751	99	161	14,122	cyclictest	32670	-21	apt-get	22:35:34	0
30751	99	160	9,125	cyclictest	1718	-21	wc	22:41:06	0
30751	99	159	33,88	cyclictest	1782	-21	head	19:26:04	0
30751	99	159	17,26	cyclictest	11926	-21	df	23:45:26	0
30751	99	159	17,103	cyclictest	31542	-21	munin-run	19:15:02	0
30751	99	159	13,120	cyclictest	19806	-21	cat	21:16:03	0
30751	99	159	12,40	cyclictest	30484	-21	grep	22:25:05	0
30751	99	158	14,25	cyclictest	13545	-21	apt	20:40:02	0
30751	99	157	15,101	cyclictest	14119	-21	munin-run	00:00:02	0
30751	99	156	9,122	cyclictest	31689	-21	munin-node	19:15:12	0
30751	99	156	37,21	cyclictest	32221	-21	awk	22:31:55	0
30751	99	156	20,29	cyclictest	28944	-21	apt-get	22:15:18	0
30751	99	156	13,119	cyclictest	10421	-21	sort	23:35:42	0
30751	99	156	12,121	cyclictest	30469	-21	apt-get	22:25:36	0
30751	99	156	11,25	cyclictest	866	-21	grep	19:20:58	0
30751	99	155	19,107	cyclictest	6311	-21	diskstats	23:10:36	0
30751	99	155	17,98	cyclictest	3566	-21	apt-get	19:40:13	0
30751	99	155	15,24	cyclictest	2659	-21	apt-get	22:50:35	0
30751	99	154	22,103	cyclictest	19117	-21	apt-get	00:30:34	0
30751	99	154	15,24	cyclictest	4713	-21	df	23:00:25	0
30751	99	154	14,98	cyclictest	10917	-21	apt-get	20:25:33	0
30751	99	154	13,118	cyclictest	18564	-21	df	21:10:24	0
30751	99	153	17,112	cyclictest	10104	-21	munin-run	20:20:03	0
30751	99	153	16,95	cyclictest	3446	-21	munin-run	19:40:03	0
30751	99	153	15,23	cyclictest	15160	-21	munin-run	20:50:02	0
30751	99	153	15,113	cyclictest	9528	-21	diskstats	23:30:31	0
30751	99	153	12,22	cyclictest	10919	-21	munin-run	20:25:01	0
30751	99	153	12,117	cyclictest	11136	-21	df	23:40:27	0
30751	99	153	11,28	cyclictest	14033	-21	grep	20:40:52	0
30751	99	153	11,118	cyclictest	28374	-21	sort	22:10:41	0
30751	99	152	22,29	cyclictest	8596	-21	apt-get	20:10:21	0
30751	99	152	17,107	cyclictest	23454	-21	df_inode	21:40:28	0
30751	99	152	16,41	cyclictest	14345	-21	df	00:00:32	0
30751	99	152	14,113	cyclictest	5068	-21	apt-get	19:50:06	0
30751	99	152	12,117	cyclictest	17572	-21	munin-plugin-st	21:05:01	0
30751	99	151	17,37	cyclictest	18947	-21	munin-run	00:30:04	0
30751	99	151	17,109	cyclictest	24940	-21	apt-get	21:50:21	0
30751	99	151	15,112	cyclictest	20196	-21	df	21:20:27	0
30751	99	150	40,89	cyclictest	24211	-21	cstates	21:45:23	0
30751	99	150	29,103	cyclictest	5058	-21	kworker/u2:5	19:55:20	0
30751	99	150	17,25	cyclictest	18367	-21	munin-run	21:10:02	0
30751	99	150	12,23	cyclictest	4091	-21	tr	22:56:00	0
30751	99	150	12,115	cyclictest	7678	-21	vmstat	20:01:23	0
30751	99	150	11,116	cyclictest	12916	-21	tr	23:50:47	0
30751	99	150	10,26	cyclictest	15686	-21	fgrep	20:50:54	0
30751	99	149	17,24	cyclictest	15939	-21	df_inode	00:10:31	0
30751	99	149	15,23	cyclictest	8725	-21	df	23:25:26	0
30751	99	149	13,22	cyclictest	27254	-21	munin-run	22:05:01	0
30751	99	149	10,27	cyclictest	8340	-21	/usr/sbin/munin	20:06:00	0
30751	99	148	21,99	cyclictest	20889	-21	apt-get	21:25:21	0
30751	99	148	20,100	cyclictest	20077	-21	apt-get	00:35:28	0
30751	99	148	14,111	cyclictest	2275	-21	grep	22:45:48	0
30751	99	148	13,47	cyclictest	8483	-21	users	23:21:07	0
30751	99	147	17,25	cyclictest	2353	-21	/usr/sbin/munin	19:30:54	0
30751	99	147	15,106	cyclictest	17456	-21	apt	00:20:12	0
30751	99	147	10,114	cyclictest	16278	-21	cat	20:55:40	0
30751	99	146	17,27	cyclictest	12726	-21	sshd	20:32:15	0
30751	99	146	17,108	cyclictest	27595	-21	memory	22:05:46	0
30751	99	145	36,91	cyclictest	7210	-21	latency	23:15:42	0
30751	99	144	16,24	cyclictest	5519	-21	diskstats	23:05:34	0
30751	99	144	10,27	cyclictest	15037	-21	apt-get	00:05:22	0
30751	99	143	10,108	cyclictest	22789	-21	grep	21:35:48	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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