OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #f, slot #4

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
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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: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system

Characteristics of the highest latencies:

System rackfslot4s.osadl.org (updated Tue Jun 02, 2026 00:44:35)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
24466	2	123	0,2	chrt	24467	-21	runrttasks	22:53:52	0
13416	2	122	0,2	chrt	13418	-21	chrt	00:14:15	0
26433	2	120	0,3	chrt	26419	-21	ntpq	19:36:14	0
17352	2	118	0,2	chrt	17353	-21	runrttasks	19:21:24	0
8725	2	116	0,3	chrt	8726	-21	runrttasks	23:18:17	0
6570	2	115	0,3	chrt	6571	-21	sleep	21:38:42	0
23873	2	115	0,2	chrt	23874	-21	if_eth0	21:16:10	0
29425	2	114	0,3	chrt	29426	-21	sleep	23:49:39	0
24221	2	112	0,3	chrt	24222	-21	sleep	22:05:29	0
21564	2	112	0,3	chrt	21565	-21	if_eth1	22:01:04	0
21107	2	112	0,1	sleep0	21109	-21	fschecks_count	20:20:34	0
32453	2	111	0,2	chrt	32454	-21	sleep	19:45:55	0
22837	2	110	0,2	chrt	22836	-21	cut	19:30:43	0
19020	2	110	0,2	sleep0	19019	-21	grep	22:45:53	0
32135	2	109	0,2	sleep0	32140	-21	chrt	23:53:13	0
13459	2	109	0,1	sleep0	13461	-21	cut	19:15:42	0
9897	2	108	0,2	sleep0	9899	-21	cpu	19:10:26	0
21512	2	105	0,2	chrt	21491	-21	ntpq	23:37:24	0
5853	2	103	0,2	chrt	5854	-21	sleep	20:47:06	0
28487	2	101	0,1	sleep0	28489	-21	chrt	21:22:30	0
20817	2	101	0,2	sleep0	20818	-21	if_eth1	21:11:50	0
1838	2	101	0,2	sleep0	1840	-21	cat	21:31:16	0
7236	2	100	0,2	sleep0	7237	-21	aten2.4_rfpower	20:50:23	0
28460	2	88	0,2	sleep0	28461	-21	ld	00:36:15	0
13112	2	88	0,2	sleep0	13113	-21	seq	21:48:17	0
19491	2	87	0,1	sleep0	19492	-21	chrt	23:35:05	0
3994	2	86	0,2	sleep0	3995	-21	chrt	22:23:00	0
728	2	85	0,1	sleep0	729	-21	seq	20:40:01	0
422	2	84	0,2	sleep0	423	-21	chrt	21:29:57	0
7172	2	83	0,2	sleep0	7175	-21	wc	00:05:04	0
6521	2	80	9,14	sleep0	6490	-21	apt-get	19:05:17	0
15194	2	77	0,2	sleep0	15195	-21	seq	21:51:12	0
8151	2	76	0,1	sleep0	8152	-21	irqrtprio	00:06:04	0
29894	2	76	0,2	sleep0	29893	-21	ld	23:01:19	0
992	2	74	0,1	sleep0	994	-21	aten2.4_rfpower	20:40:25	0
30171	2	72	0,1	sleep0	30172	-21	chrt	22:14:01	0
13446	2	71	0,2	sleep0	13447	-21	chrt	22:37:13	0
15835	2	67	0,2	sleep0	15836	-21	chrt	23:29:21	0
15129	2	64	0,1	sleep0	15130	-21	ssh	00:16:16	0
10156	2	60	0,2	sleep0	10181	-21	proc_pri	22:32:21	0
27118	2	58	0,1	sleep0	27120	-21	wc	00:35:04	0
16907	2	58	0,2	sleep0	16909	-21	processes	22:42:19	0
5587	2	56	0,1	sleep0	5588	-21	fschecks_time	19:55:35	0
17351	2	54	3,8	sleep0	17357	-21	runrttasks	21:55:07	0
1420	2	54	0,2	sleep0	1422	-21	chrt	22:19:52	0
9490	90	52	21,24	cyclictest	0	-21	swapper	23:58:04	0
22548	2	52	0,2	sleep0	22551	-21	wc	00:27:20	0
21893	2	50	0,3	chrt	21895	-21	munin-plugin-st	19:30:01	0
9490	90	49	18,23	cyclictest	0	-21	swapper	21:40:09	0
9490	90	49	17,24	cyclictest	0	-21	swapper	22:59:26	0
9490	90	48	19,22	cyclictest	0	-21	swapper	23:24:01	0
9490	90	48	17,22	cyclictest	0	-21	swapper	23:44:00	0
24819	2	48	0,2	chrt	24817	-21	ld	20:25:48	0
32107	2	47	0,3	chrt	31980	-21	apt-get	23:05:31	0
3224	2	46	0,2	chrt	3222	-21	ld	19:51:06	0
9490	90	45	14,22	cyclictest	0	-21	swapper	22:27:52	0
9490	90	44	5,10	cyclictest	17393	-21	munin-run	20:15:01	0
3202	2	44	0,3	sleep0	3199	-21	ssh	23:10:34	0
9490	90	43	13,23	cyclictest	0	-21	swapper	00:22:52	0
8218	2	43	2,6	sleep0	0	-21	swapper	20:00:05	0
9490	90	42	4,28	cyclictest	10211	-21	/usr/sbin/munin	20:55:53	0
9490	90	42	4,18	cyclictest	12576	-21	ntpq	20:06:06	0
9490	90	42	20,14	cyclictest	0	-21	swapper	21:05:13	0
9490	90	41	4,18	cyclictest	29485	-21	ntpq	19:41:07	0
9490	90	40	4,8	cyclictest	14441	-21	ntpq	21:00:59	0
27349	2	40	0,1	sleep0	27350	-21	seq	20:30:50	0
9490	90	39	6,27	cyclictest	18737	-21	ntpq	20:16:06	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2024-02-27 - 12:39