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 Dec 19, 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
1014	2	1268	0,6	sleep0	29	-1	kworker/u3:0	17:56:06	0
21408	99	163	18,103	cyclictest	2911	-21	apt-get	23:47:01	0
21408	99	160	21,111	cyclictest	2690	-21	apt-get	20:30:21	0
21408	99	160	12,122	cyclictest	21506	-21	apt-get	19:10:20	0
21408	99	160	11,121	cyclictest	29791	-21	/usr/sbin/munin	23:16:10	0
21408	99	159	18,25	cyclictest	6396	-21	/usr/sbin/munin	00:10:56	0
21408	99	159	18,23	cyclictest	12615	-21	diskstats	21:30:53	0
21408	99	158	19,110	cyclictest	5889	-21	apt-get	20:50:19	0
21408	99	158	12,124	cyclictest	8207	-21	uname	00:20:41	0
21408	99	157	40,23	cyclictest	22599	-21	cpu	19:15:23	0
21408	99	157	25,21	cyclictest	0	-21	swapper	21:11:01	0
21408	99	157	16,24	cyclictest	21800	-21	apt-get	22:25:14	0
21408	99	156	18,24	cyclictest	14031	-21	munin-run	21:40:01	0
21408	99	155	32,21	cyclictest	19631	-21	apt-get	22:16:35	0
21408	99	155	27,109	cyclictest	8013	-21	wc	21:00:59	0
21408	99	155	22,28	cyclictest	29910	-21	apt-get	20:00:23	0
21408	99	155	16,24	cyclictest	29070	-21	wc	19:55:22	0
21408	99	155	16,24	cyclictest	11334	-21	munin-run	00:40:01	0
21408	99	155	16,114	cyclictest	31320	-21	munin-run	23:25:02	0
21408	99	155	13,118	cyclictest	32711	-21	wc	20:15:42	0
21408	99	155	13,118	cyclictest	21168	-21	irqstats	22:21:21	0
21408	99	154	40,93	cyclictest	27330	-21	latency_hist	23:00:04	0
21408	99	154	11,119	cyclictest	6971	-21	tr	20:55:48	0
21408	99	154	10,121	cyclictest	24954	-21	munin-plugin-st	19:30:01	0
21408	99	153	22,31	cyclictest	29655	-21	users	23:11:07	0
21408	99	153	14,23	cyclictest	4684	-21	munin-run	00:00:03	0
21408	99	153	13,98	cyclictest	4136	-21	users	20:36:07	0
21408	99	153	13,26	cyclictest	4956	-21	users	20:41:07	0
21408	99	153	10,120	cyclictest	17660	-21	grep	22:00:49	0
21408	99	152	9,117	cyclictest	27891	-21	fgrep	19:45:56	0
21408	99	152	30,19	cyclictest	0	-21	swapper	21:55:56	0
21408	99	152	16,97	cyclictest	24157	-21	apt	19:25:00	0
21408	99	152	15,26	cyclictest	7187	-21	/usr/sbin/munin	00:15:48	0
21408	99	151	39,91	cyclictest	15935	-21	latency	21:50:41	0
21408	99	151	20,107	cyclictest	19631	-21	apt	22:15:01	0
21408	99	151	12,114	cyclictest	5971	-21	grep	00:05:59	0
21408	99	151	10,116	cyclictest	10399	-21	sort	21:15:58	0
21408	99	150	16,108	cyclictest	25846	-21	/usr/sbin/munin	19:35:35	0
21408	99	150	15,115	cyclictest	26485	-21	apt	22:55:02	0
21408	99	150	15,112	cyclictest	11512	-21	apt	21:25:12	0
21408	99	150	13,23	cyclictest	741	-21	apt-get	20:20:51	0
21408	99	149	20,28	cyclictest	24316	-21	diskstats	22:40:32	0
21408	99	149	18,26	cyclictest	32008	-21	ntp_states	20:10:53	0
21408	99	149	17,104	cyclictest	27411	-21	apt-get	23:00:21	0
21408	99	149	14,111	cyclictest	25227	-21	irqstats	19:30:37	0
21408	99	149	12,28	cyclictest	8294	-21	/usr/sbin/munin	21:05:50	0
21408	99	149	10,115	cyclictest	26831	-21	if_eth0	19:40:36	0
21408	99	148	18,103	cyclictest	23385	-21	apt-get	22:35:18	0
21408	99	148	16,111	cyclictest	2067	-21	munin-run	23:45:05	0
21408	99	148	13,24	cyclictest	32371	-21	if_eth0	23:30:37	0
21408	99	148	12,113	cyclictest	8879	-21	apt-get	00:25:31	0
21408	99	148	12,112	cyclictest	30513	-21	kworker/u2:11	20:05:13	0
21408	99	148	12,112	cyclictest	28204	-21	apt-get	23:05:15	0
21408	99	148	10,115	cyclictest	32015	-21	ls	23:26:03	0
21408	99	147	17,25	cyclictest	3292	-21	df	23:50:34	0
21408	99	147	10,24	cyclictest	28730	-21	awk	19:50:59	0
21408	99	147	10,113	cyclictest	14790	-21	sed	21:41:03	0
21408	99	146	29,21	cyclictest	0	-21	swapper	22:45:59	0
21408	99	146	20,99	cyclictest	22593	-21	apt-get	22:30:22	0
21408	99	146	15,39	cyclictest	4911	-21	df_inode	00:00:30	0
21408	99	146	15,106	cyclictest	15312	-21	grep	21:45:55	0
21408	99	146	13,22	cyclictest	2332	-21	awk	20:26:03	0
21408	99	146	12,24	cyclictest	9843	-21	sshd	00:30:18	0
21408	99	145	9,114	cyclictest	984	-21	fgrep	23:35:57	0
21408	99	145	18,23	cyclictest	18255	-21	diskstats	22:05:32	0
21408	99	144	11,111	cyclictest	10715	-21	/usr/sbin/munin	21:20:36	0
21408	99	143	17,99	cyclictest	5095	-21	apt-get	20:45:18	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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