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 376 highest latencies:

System rack5slot7s.osadl.org (updated Sat Mar 14, 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
9516	2	2431	2195,90	sleep0	0	-21	swapper	19:09:35	0
9606	99	167	18,28	cyclictest	9632	-21	apt-get	22:25:31	0
9606	99	163	30,19	cyclictest	0	-21	swapper	20:26:02	0
9606	99	159	12,123	cyclictest	24288	-21	wc	23:55:23	0
9606	99	159	11,123	cyclictest	16674	-21	wc	19:47:02	0
9606	99	158	16,114	cyclictest	17821	-21	df_inode	19:55:32	0
9606	99	157	27,108	cyclictest	0	-21	swapper	00:10:58	0
9606	99	157	19,111	cyclictest	21767	-21	apt-get	20:20:29	0
9606	99	157	14,118	cyclictest	20323	-21	diskstats	23:30:32	0
9606	99	156	20,113	cyclictest	21016	-21	df	20:15:25	0
9606	99	155	18,111	cyclictest	28268	-21	munin-run	21:00:02	0
9606	99	155	17,114	cyclictest	19443	-21	diskstats	20:05:32	0
9606	99	155	15,37	cyclictest	12418	-21	apt-config	19:25:06	0
9606	99	155	13,118	cyclictest	32229	-21	unixbench_singl	21:21:03	0
9606	99	155	12,120	cyclictest	31483	-21	modprobe	21:20:01	0
9606	99	154	21,28	cyclictest	8046	-21	diskstats	22:15:33	0
9606	99	154	17,22	cyclictest	29737	-21	apt-get	00:31:02	0
9606	99	154	16,23	cyclictest	14280	-21	apt-get	19:35:12	0
9606	99	154	13,27	cyclictest	10507	-21	munin-node	23:50:10	0
9606	99	154	13,116	cyclictest	25854	-21	awk	20:41:08	0
9606	99	153	31,19	cyclictest	0	-21	swapper	21:00:44	0
9606	99	153	21,25	cyclictest	13485	-21	/usr/sbin/munin	19:30:56	0
9606	99	153	18,112	cyclictest	25064	-21	munin-run	20:40:02	0
9606	99	153	16,101	cyclictest	19192	-21	users	20:01:05	0
9606	99	153	11,118	cyclictest	11649	-21	cat	19:20:06	0
9606	99	152	29,24	cyclictest	20420	-21	tr	20:10:48	0
9606	99	152	28,101	cyclictest	0	-21	swapper	21:10:57	0
9606	99	152	22,101	cyclictest	21829	-21	apt-get	23:40:20	0
9606	99	152	19,25	cyclictest	23569	-21	apt-get	20:30:17	0
9606	99	152	16,23	cyclictest	31567	-21	munin-run	00:40:04	0
9606	99	151	31,22	cyclictest	16922	-21	apt-get	19:50:25	0
9606	99	151	20,29	cyclictest	9818	-21	diskstats	19:10:34	0
9606	99	151	20,29	cyclictest	1527	-21	apt-get	21:35:21	0
9606	99	151	18,24	cyclictest	15721	-21	ntp_states	23:00:48	0
9606	99	151	15,36	cyclictest	13101	-21	df_inode	22:45:30	0
9606	99	151	10,38	cyclictest	25711	-21	sshd	00:03:31	0
9606	99	150	19,23	cyclictest	32396	-21	apt-get	21:25:16	0
9606	99	150	19,103	cyclictest	3940	-21	apt-get	21:50:16	0
9606	99	150	17,28	cyclictest	28363	-21	diskstats	00:20:37	0
9606	99	150	17,22	cyclictest	12360	-21	apt-get	19:26:15	0
9606	99	150	10,117	cyclictest	10668	-21	wc	22:30:29	0
9606	99	149	9,117	cyclictest	9316	-21	sort	22:21:01	0
9606	99	149	19,27	cyclictest	22624	-21	apt-get	23:45:20	0
9606	99	149	14,25	cyclictest	25926	-21	df	00:05:24	0
9606	99	149	14,113	cyclictest	17108	-21	sshd	23:10:32	0
9606	99	149	12,24	cyclictest	3347	-21	/usr/sbin/munin	21:45:42	0
9606	99	148	18,103	cyclictest	25977	-21	apt-get	20:45:16	0
9606	99	148	15,111	cyclictest	18734	-21	diskstats	23:20:32	0
9606	99	148	14,111	cyclictest	5537	-21	wc	22:00:07	0
9606	99	148	14,109	cyclictest	21117	-21	diskstats	23:35:32	0
9606	99	147	29,22	cyclictest	0	-21	swapper	22:50:45	0
9606	99	147	11,93	cyclictest	29180	-21	apt-get	21:05:11	0
9606	99	147	11,113	cyclictest	272	-21	snmpd	21:30:57	0
9606	99	147	10,114	cyclictest	12570	-21	ps	22:40:53	0
9606	99	147	10,112	cyclictest	18497	-21	cron	23:20:00	0
9606	99	146	34,92	cyclictest	7252	-21	diskstats	22:10:32	0
9606	99	146	17,105	cyclictest	11382	-21	/usr/sbin/munin	22:36:04	0
9606	99	146	13,94	cyclictest	19955	-21	awk	23:25:59	0
9606	99	146	11,113	cyclictest	27280	-21	cat	20:50:59	0
9606	99	145	31,18	cyclictest	0	-21	swapper	00:25:57	0
9606	99	145	15,107	cyclictest	28069	-21	users	00:16:01	0
9606	99	145	13,112	cyclictest	15208	-21	df_inode	19:40:28	0
9606	99	145	13,104	cyclictest	6346	-21	/usr/sbin/munin	22:05:11	0
9606	99	145	11,21	cyclictest	6201	-21	grep	22:01:03	0
9606	99	144	16,106	cyclictest	14587	-21	apt-get	22:55:17	0
9606	99	144	16,105	cyclictest	2350	-21	apt-get	21:40:19	0
9606	99	144	11,39	cyclictest	16198	-21	/usr/sbin/munin	23:05:39	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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