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 Wed Dec 31, 2025 00:45:08)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
12592	2	2432	2189,98	sleep0	0	-21	swapper	19:09:11	0
12730	99	167	19,104	cyclictest	22330	-21	diskstats	20:05:34	0
12730	99	161	14,26	cyclictest	26786	-21	apt-get	23:56:41	0
12730	99	161	13,23	cyclictest	27957	-21	diskstats	20:40:33	0
12730	99	160	20,28	cyclictest	19661	-21	apt-get	19:50:26	0
12730	99	158	30,22	cyclictest	17912	-21	unixbench_singl	22:56:04	0
12730	99	158	17,27	cyclictest	31712	-21	users	21:01:05	0
12730	99	157	21,27	cyclictest	7125	-21	ntp_states	21:51:31	0
12730	99	157	13,42	cyclictest	30724	-21	cut	20:56:00	0
12730	99	156	21,108	cyclictest	25433	-21	apt-get	20:25:18	0
12730	99	156	15,23	cyclictest	21181	-21	munin-run	23:20:02	0
12730	99	156	11,105	cyclictest	25427	-21	/usr/sbin/munin	23:45:36	0
12730	99	155	37,22	cyclictest	32270	-21	open_files	00:25:53	0
12730	99	154	43,22	cyclictest	23010	-21	munin-node	20:10:13	0
12730	99	154	14,115	cyclictest	14671	-21	munin-run	19:20:03	0
12730	99	153	22,105	cyclictest	443	-21	diskstats	00:30:39	0
12730	99	153	14,113	cyclictest	14900	-21	diskstats	19:20:35	0
12730	99	153	11,121	cyclictest	23577	-21	kworker/u2:10	23:35:01	0
12730	99	152	20,106	cyclictest	24124	-21	ntp_states	20:15:53	0
12730	99	152	13,27	cyclictest	17169	-21	/usr/sbin/munin	19:36:00	0
12730	99	152	13,23	cyclictest	30132	-21	apt	20:55:02	0
12730	99	152	12,119	cyclictest	18298	-21	sort	23:00:42	0
12730	99	152	11,26	cyclictest	13031	-21	grep	22:26:01	0
12730	99	152	11,25	cyclictest	24738	-21	df	20:20:26	0
12730	99	151	21,28	cyclictest	1781	-21	users	00:36:08	0
12730	99	151	21,26	cyclictest	18894	-21	df_inode	19:45:30	0
12730	99	151	19,105	cyclictest	22411	-21	ntp_states	23:25:51	0
12730	99	151	18,109	cyclictest	9768	-21	/usr/sbin/munin	22:06:01	0
12730	99	151	16,37	cyclictest	1691	-21	apt	21:20:02	0
12730	99	151	16,24	cyclictest	16475	-21	df	19:30:26	0
12730	99	151	16,113	cyclictest	28756	-21	diskstats	20:45:34	0
12730	99	151	12,27	cyclictest	18408	-21	/usr/sbin/munin	19:40:57	0
12730	99	151	12,114	cyclictest	31227	-21	ls	00:20:25	0
12730	99	151	12,114	cyclictest	3074	-21	awk	21:25:59	0
12730	99	151	11,115	cyclictest	12431	-21	cat	22:25:05	0
12730	99	151	10,25	cyclictest	7857	-21	grep	21:55:50	0
12730	99	150	9,118	cyclictest	26787	-21	munin-plugin-st	23:55:01	0
12730	99	150	37,95	cyclictest	29145	-21	awk	00:05:56	0
12730	99	150	20,101	cyclictest	20606	-21	apt-get	19:55:18	0
12730	99	150	18,105	cyclictest	13265	-21	apt-get	22:30:18	0
12730	99	150	16,111	cyclictest	9148	-21	apt	22:05:00	0
12730	99	150	15,112	cyclictest	24386	-21	munin-run	23:40:02	0
12730	99	150	14,37	cyclictest	10951	-21	diskstats	22:15:33	0
12730	99	150	14,24	cyclictest	29994	-21	mailstats	00:10:57	0
12730	99	150	13,49	cyclictest	19352	-21	systemctl	23:06:00	0
12730	99	150	12,25	cyclictest	31029	-21	munin-plugin-st	00:20:01	0
12730	99	150	12,112	cyclictest	6508	-21	apt-get	21:50:04	0
12730	99	149	16,25	cyclictest	22118	-21	munin-run	20:05:01	0
12730	99	149	10,119	cyclictest	27443	-21	zcat	20:35:56	0
12730	99	148	9,27	cyclictest	20366	-21	latency_hist	23:15:03	0
12730	99	148	16,23	cyclictest	10150	-21	df_inode	22:10:30	0
12730	99	148	13,112	cyclictest	28039	-21	df	00:00:33	0
12730	99	147	28,95	cyclictest	13316	-21	cut	19:11:08	0
12730	99	147	21,102	cyclictest	500	-21	ntp_states	21:10:51	0
12730	99	147	16,22	cyclictest	15577	-21	munin-run	22:45:01	0
12730	99	147	15,22	cyclictest	32592	-21	sort	21:10:04	0
12730	99	147	14,111	cyclictest	16276	-21	apt	19:30:01	0
12730	99	147	12,26	cyclictest	16322	-21	sed	22:46:04	0
12730	99	147	12,26	cyclictest	14162	-21	sh	22:35:28	0
12730	99	146	9,113	cyclictest	25262	-21	grep	23:45:04	0
12730	99	146	19,24	cyclictest	4096	-21	munin-run	21:35:03	0
12730	99	146	17,26	cyclictest	16711	-21	memory	22:50:45	0
12730	99	146	16,25	cyclictest	26472	-21	memory	20:30:44	0
12730	99	146	15,24	cyclictest	4510	-21	ntp_states	21:35:51	0
12730	99	146	14,20	cyclictest	2427	-21	head	21:21:02	0
12730	99	145	14,108	cyclictest	21301	-21	apt-get	23:20:15	0
12730	99	144	14,23	cyclictest	5449	-21	which	21:40:57	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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