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 all highest latencies:

System rackfslot4s.osadl.org (updated Mon May 25, 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
24550	2	129	0,3	chrt	24551	-21	runrttasks	21:17:18	0
1310	2	127	0,2	sleep0	1311	-21	awk	23:07:25	0
8275	2	124	0,3	chrt	8254	-21	ssh	00:06:58	0
6425	2	124	0,2	sleep0	6426	-21	sh	22:27:03	0
27576	2	121	0,2	sleep0	27577	-21	seq	22:58:56	0
9512	2	120	0,2	chrt	9514	-21	chrt	20:01:21	0
24836	2	119	0,3	chrt	24835	-21	ssh	00:31:49	0
4359	2	118	0,2	chrt	4363	-21	sed	00:01:06	0
13489	2	118	0,3	chrt	13487	-21	awk	21:00:26	0
21618	2	116	0,3	chrt	21619	-21	seq	23:38:20	0
15608	2	115	0,4	chrt	14844	-21	/usr/sbin/munin	22:41:03	0
12818	2	115	0,3	chrt	12806	-21	ntpq	22:36:31	0
29431	2	114	0,3	chrt	29432	-21	sleep	19:41:09	0
14565	2	113	0,3	chrt	14564	-21	sed	23:27:22	0
9360	2	112	0,2	chrt	9361	-21	runrttasks	23:20:27	0
21926	2	112	0,2	chrt	21928	-21	cpu	22:50:40	0
29454	2	110	0,2	chrt	29453	-21	sed	21:25:05	0
15302	2	108	0,2	chrt	15300	-21	seq	00:17:25	0
18786	2	107	0,2	chrt	18787	-21	runrttasks	21:57:05	0
1883	2	105	0,2	chrt	1884	-21	runrttasks	19:50:04	0
6304	2	104	0,2	chrt	6305	-21	sleep	21:38:37	0
15998	2	103	0,2	chrt	15999	-21	sleep	21:52:47	0
10739	2	100	0,2	sleep0	10741	-21	chrt	00:11:00	0
19800	2	98	0,2	sleep0	19798	-21	aten2.4-expect	21:10:41	0
20193	2	91	0,1	sleep0	20197	-21	timerandwakeup	22:47:28	0
32577	2	90	0,2	sleep0	32580	-21	sort	22:17:29	0
13354	2	89	0,2	sleep0	13355	-21	rm	21:49:25	0
12383	2	88	0,1	sleep0	12382	-21	seq	20:05:59	0
9786	2	87	0,2	sleep0	9788	-21	chrt	22:32:05	0
16075	2	86	0,2	sleep0	16076	-21	basename	23:30:35	0
869	2	84	0,2	sleep0	871	-21	grep	23:56:04	0
30213	2	82	0,2	sleep0	30214	-21	collect2	23:02:34	0
29677	2	82	0,2	sleep0	29679	-21	sh	23:50:51	0
7703	2	80	0,2	sleep0	7704	-21	mailstats	23:17:13	0
21978	2	80	0,1	sleep0	21976	-21	ssh	22:01:45	0
26821	2	77	0,2	sleep0	26822	-21	seq	20:30:14	0
24052	2	77	0,1	sleep0	24053	-21	rm	23:41:49	0
20463	2	76	0,1	sleep0	20459	-21	diskstats	00:25:44	0
3442	2	74	0,2	sleep0	3444	-21	wc	22:22:29	0
4594	2	73	0,2	sleep0	4592	-21	uptime	23:12:23	0
7133	2	71	0,1	sleep0	7131	-21	df_inode	20:50:31	0
23008	2	69	0,2	sleep0	23009	-21	seq	19:30:53	0
32356	2	67	0,1	sleep0	32357	-21	chrt	21:29:17	0
9182	90	63	36,20	cyclictest	23738	-21	sshd	20:25:17	0
9182	90	63	30,24	cyclictest	17347	-21	hddtemp_smartct	00:20:56	0
9182	90	62	31,23	cyclictest	1206	-21	ssh	21:31:06	0
9182	90	62	30,22	cyclictest	21787	-21	apt	19:30:01	0
9182	90	61	32,21	cyclictest	6233	-21	seq	20:49:01	0
9182	90	61	32,12	cyclictest	9707	-21	apt-get	20:55:29	0
9182	90	61	31,22	cyclictest	24374	-21	ssh	22:05:57	0
9182	90	61	29,23	cyclictest	5372	-21	df	19:55:30	0
9182	90	60	35,16	cyclictest	7114	-21	apt-get	21:40:19	0
9182	90	60	29,21	cyclictest	17464	-21	/usr/sbin/munin	20:15:49	0
9182	90	60	27,13	cyclictest	1859	-21	ntpq	20:41:15	0
9182	90	59	35,15	cyclictest	26282	-21	df_inode	23:45:41	0
9182	90	59	34,16	cyclictest	14419	-21	runrttasks	20:10:19	0
9182	90	59	29,22	cyclictest	29021	-21	ssh	22:12:24	0
9182	90	59	27,12	cyclictest	17310	-21	memory	21:05:49	0
9182	90	58	36,15	cyclictest	29907	-21	/usr/sbin/munin	20:35:48	0
9182	90	58	35,14	cyclictest	32327	-21	ntpq	19:45:53	0
9182	90	58	29,21	cyclictest	13429	-21	sed	19:15:44	0
9182	90	58	28,22	cyclictest	27799	-21	sshd	00:36:16	0
9182	90	58	27,22	cyclictest	412	-21	snmpd	19:39:11	0
9182	90	58	26,23	cyclictest	17092	-21	ntpq	19:21:20	0
9182	90	57	26,23	cyclictest	20943	-21	df_inode	20:20:28	0
9182	90	56	34,13	cyclictest	11325	-21	python3	19:12:17	0
9182	90	55	33,15	cyclictest	9215	-21	cat	19:10:04	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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