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 Wed Jul 08, 2026 00:45:08)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
15797	2	2453	2203,87	sleep0	0	-21	swapper	19:09:38	0
15885	99	163	19,25	cyclictest	17090	-21	df_inode	19:15:37	0
15885	99	161	24,31	cyclictest	2992	-21	apt-get	21:10:32	0
15885	99	158	16,117	cyclictest	27363	-21	apt-get	23:41:30	0
15885	99	157	17,48	cyclictest	25967	-21	df	23:30:23	0
15885	99	156	16,26	cyclictest	18472	-21	irqstats	19:25:40	0
15885	99	156	15,120	cyclictest	19323	-21	diskstats	22:50:33	0
15885	99	156	15,119	cyclictest	22320	-21	apt-get	23:11:18	0
15885	99	156	12,29	cyclictest	16506	-21	switchtime	22:30:59	0
15885	99	155	9,123	cyclictest	3203	-21	cut	00:26:00	0
15885	99	155	42,22	cyclictest	25059	-21	latency_hist	23:25:05	0
15885	99	155	21,108	cyclictest	16689	-21	munin-node	19:15:14	0
15885	99	155	15,116	cyclictest	4472	-21	irqstats	00:35:38	0
15885	99	155	14,24	cyclictest	32163	-21	apt-get	20:50:17	0
15885	99	155	14,114	cyclictest	26496	-21	cut	20:15:42	0
15885	99	154	9,44	cyclictest	4193	-21	modprobe	00:35:00	0
15885	99	154	77,37	cyclictest	32643	-21	munin-plugin-st	00:10:01	0
15885	99	154	19,22	cyclictest	15375	-21	irqstats	22:25:41	0
15885	99	154	18,111	cyclictest	29405	-21	df	23:50:29	0
15885	99	154	17,21	cyclictest	14289	-21	munin-run	22:20:02	0
15885	99	154	16,21	cyclictest	30798	-21	apt-get	00:00:39	0
15885	99	154	11,119	cyclictest	6800	-21	awk	21:30:59	0
15885	99	153	22,110	cyclictest	3470	-21	kworker/u2:9	21:15:15	0
15885	99	153	15,22	cyclictest	20062	-21	irqstats	19:35:40	0
15885	99	153	13,26	cyclictest	13209	-21	find	22:10:55	0
15885	99	153	13,116	cyclictest	7155	-21	snmpd	22:56:03	0
15885	99	153	12,26	cyclictest	17500	-21	munin-plugin-st	22:40:00	0
15885	99	152	18,110	cyclictest	27948	-21	apt	20:25:10	0
15885	99	152	13,118	cyclictest	32061	-21	apt	20:50:02	0
15885	99	152	12,100	cyclictest	27834	-21	/usr/sbin/munin	20:25:05	0
15885	99	152	11,28	cyclictest	24087	-21	sed	23:16:12	0
15885	99	152	10,117	cyclictest	1320	-21	memory	00:15:43	0
15885	99	151	9,119	cyclictest	19064	-21	head	22:46:05	0
15885	99	151	9,118	cyclictest	25412	-21	munin-run	20:10:01	0
15885	99	151	18,110	cyclictest	11071	-21	munin-run	22:00:03	0
15885	99	151	18,106	cyclictest	20712	-21	apt-get	19:40:16	0
15885	99	151	14,115	cyclictest	17754	-21	wc	19:20:53	0
15885	99	151	13,23	cyclictest	7754	-21	sort	21:36:03	0
15885	99	151	12,115	cyclictest	19562	-21	awk	19:31:02	0
15885	99	150	9,117	cyclictest	14863	-21	grep	22:20:56	0
15885	99	150	34,23	cyclictest	22843	-21	timerandwakeup	19:51:04	0
15885	99	150	18,23	cyclictest	9435	-21	users	21:46:06	0
15885	99	150	17,20	cyclictest	30453	-21	munin-run	20:40:03	0
15885	99	150	17,110	cyclictest	21678	-21	irqstats	19:45:41	0
15885	99	150	16,24	cyclictest	25687	-21	irqstats	20:10:41	0
15885	99	150	14,113	cyclictest	2817	-21	munin-run	21:10:01	0
15885	99	149	18,23	cyclictest	2227	-21	ntp_states	00:20:49	0
15885	99	149	17,24	cyclictest	27318	-21	users	23:36:04	0
15885	99	149	17,106	cyclictest	616	-21	diskstats	20:55:41	0
15885	99	149	16,110	cyclictest	30798	-21	apt-get	00:00:04	0
15885	99	149	15,96	cyclictest	21800	-21	irqstats	23:05:41	0
15885	99	149	15,26	cyclictest	11886	-21	munin-run	22:05:01	0
15885	99	149	13,97	cyclictest	29319	-21	grep	20:31:02	0
15885	99	149	12,25	cyclictest	552	-21	ls	00:10:48	0
15885	99	148	31,97	cyclictest	28666	-21	if_eth0	23:45:45	0
15885	99	148	16,24	cyclictest	24163	-21	memory	20:00:43	0
15885	99	148	12,23	cyclictest	4876	-21	df_inode	21:20:29	0
15885	99	147	22,25	cyclictest	30683	-21	diskstats	20:40:31	0
15885	99	147	15,35	cyclictest	23803	-21	munin-run	20:00:02	0
15885	99	146	14,108	cyclictest	25298	-21	wc	23:25:41	0
15885	99	146	14,106	cyclictest	17619	-21	/usr/sbin/munin	22:40:38	0
15885	99	146	12,93	cyclictest	2085	-21	cat	21:05:05	0
15885	99	145	17,25	cyclictest	5569	-21	apt-get	21:25:14	0
15885	99	145	16,104	cyclictest	12084	-21	df	22:05:23	0
15885	99	144	39,84	cyclictest	9583	-21	cpu	21:50:22	0
15885	99	144	17,24	cyclictest	8092	-21	diskstats	21:40:34	0
15885	99	142	18,26	cyclictest	20831	-21	apt-get	23:00:21	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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