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 all highest latencies:

System rack5slot7s.osadl.org (updated Mon Jun 16, 2025 12:45:08)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
4653	2	2401	2175,85	sleep0	0	-21	swapper	07:09:54	0
4707	99	163	33,109	cyclictest	6748	-21	wc	07:20:07	0
4707	99	162	28,113	cyclictest	15139	-21	head	11:26:05	0
4707	99	159	13,122	cyclictest	12620	-21	wc	07:55:46	0
4707	99	157	35,23	cyclictest	9341	-21	mailstats	10:51:06	0
4707	99	157	15,119	cyclictest	27973	-21	apt	09:30:02	0
4707	99	157	14,101	cyclictest	31172	-21	apt-get	09:51:16	0
4707	99	156	16,112	cyclictest	30479	-21	/usr/sbin/munin	09:46:02	0
4707	99	156	14,117	cyclictest	11655	-21	df	07:50:27	0
4707	99	156	10,121	cyclictest	30110	-21	find	09:40:57	0
4707	99	155	8,29	cyclictest	26067	-21	grep	09:16:07	0
4707	99	155	17,100	cyclictest	16275	-21	munin-run	08:20:03	0
4707	99	155	16,25	cyclictest	17883	-21	apt-get	08:31:09	0
4707	99	155	12,119	cyclictest	16230	-21	/usr/sbin/munin	11:35:36	0
4707	99	155	11,120	cyclictest	8629	-21	sort	10:47:03	0
4707	99	154	22,27	cyclictest	19939	-21	df_inode	08:40:31	0
4707	99	154	14,116	cyclictest	543	-21	munin-run	10:00:03	0
4707	99	154	12,39	cyclictest	5011	-21	grep	07:10:42	0
4707	99	153	39,92	cyclictest	22021	-21	timerwakeupswit	08:51:06	0
4707	99	153	38,21	cyclictest	10730	-21	latency_hist	07:45:05	0
4707	99	153	15,116	cyclictest	10631	-21	diskstats	11:00:35	0
4707	99	153	14,27	cyclictest	17845	-21	diskstats	11:45:36	0
4707	99	153	10,119	cyclictest	26620	-21	grep	09:20:57	0
4707	99	152	25,33	cyclictest	4242	-21	grep	10:20:57	0
4707	99	152	17,25	cyclictest	4845	-21	irqstats	10:25:41	0
4707	99	152	17,22	cyclictest	14077	-21	df_inode	08:05:29	0
4707	99	152	17,22	cyclictest	10876	-21	diskstats	07:45:34	0
4707	99	152	10,116	cyclictest	17192	-21	apt-get	08:25:13	0
4707	99	151	18,26	cyclictest	26444	-21	munin-run	12:40:06	0
4707	99	151	18,109	cyclictest	1356	-21	munin-run	10:05:02	0
4707	99	151	14,22	cyclictest	20437	-21	awk	12:00:51	0
4707	99	151	14,113	cyclictest	19226	-21	sort	08:35:52	0
4707	99	151	12,116	cyclictest	6106	-21	sed	10:31:07	0
4707	99	150	34,91	cyclictest	22600	-21	cstates	12:15:27	0
4707	99	150	24,19	cyclictest	17586	-21	head	11:41:08	0
4707	99	150	21,28	cyclictest	15010	-21	memory	08:10:48	0
4707	99	150	17,108	cyclictest	9246	-21	df	07:35:24	0
4707	99	150	15,25	cyclictest	9795	-21	df	10:55:27	0
4707	99	150	14,23	cyclictest	21561	-21	head	12:06:05	0
4707	99	150	13,113	cyclictest	3024	-21	grep	10:15:05	0
4707	99	150	12,115	cyclictest	3154	-21	diskstats	10:15:36	0
4707	99	150	12,113	cyclictest	22481	-21	wc	08:55:49	0
4707	99	149	28,104	cyclictest	18552	-21	kworker/u2:16	09:30:22	0
4707	99	149	16,93	cyclictest	15432	-21	/usr/sbin/munin	11:30:35	0
4707	99	149	14,98	cyclictest	25641	-21	apt	12:35:01	0
4707	99	149	14,95	cyclictest	16508	-21	diskstats	08:20:36	0
4707	99	149	14,36	cyclictest	7835	-21	apt-config	10:45:07	0
4707	99	149	12,29	cyclictest	22291	-21	wc	12:11:05	0
4707	99	149	12,114	cyclictest	13013	-21	diskstats	11:15:35	0
4707	99	148	18,103	cyclictest	23834	-21	apt-get	09:05:21	0
4707	99	148	16,109	cyclictest	24266	-21	diskstats	12:25:36	0
4707	99	148	13,36	cyclictest	18843	-21	ntpq	11:50:57	0
4707	99	148	12,110	cyclictest	23665	-21	sed	09:01:08	0
4707	99	147	8,27	cyclictest	13878	-21	cat	08:05:04	0
4707	99	147	16,20	cyclictest	9062	-21	sort	07:35:04	0
4707	99	147	16,109	cyclictest	24050	-21	apt	12:25:00	0
4707	99	147	12,111	cyclictest	19789	-21	awk	11:56:02	0
4707	99	147	12,110	cyclictest	11315	-21	apt-get	11:05:14	0
4707	99	146	29,18	cyclictest	0	-21	swapper	10:36:00	0
4707	99	146	17,25	cyclictest	29567	-21	munin-run	09:40:04	0
4707	99	146	11,23	cyclictest	2217	-21	sort	10:10:05	0
4707	99	146	10,113	cyclictest	21317	-21	modprobe	08:50:01	0
4707	99	145	19,26	cyclictest	7670	-21	diskstats	07:25:34	0
4707	99	145	14,106	cyclictest	24770	-21	/usr/sbin/munin	09:10:39	0
4707	99	144	28,23	cyclictest	0	-21	swapper	07:20:41	0
4707	99	144	17,24	cyclictest	12209	-21	df	11:10:32	0
4707	99	144	13,104	cyclictest	13731	-21	/usr/sbin/munin	11:20:44	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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