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 Sat Jun 13, 2026 00:44:34)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
7055	2	127	0,3	chrt	7052	-21	apt-config	22:05:21	0
24958	2	126	0,2	chrt	24956	-21	ntpq	22:31:31	0
22260	2	124	0,3	chrt	21038	-21	apt-get	23:16:28	0
5926	2	118	0,3	chrt	5917	-21	ntpq	22:51:29	0
18516	2	118	0,2	sleep0	18517	-21	chrt	20:45:04	0
7121	2	117	0,2	chrt	7120	-21	seq	21:16:36	0
26992	2	114	0,2	sleep0	26994	-21	sort	21:46:11	0
31573	2	113	0,2	chrt	31574	-21	ssh	21:53:08	0
26869	2	113	0,2	chrt	26867	-21	ls	19:15:03	0
15213	2	113	0,2	chrt	15215	-21	sleep	20:40:06	0
12037	2	113	0,2	chrt	12040	-21	idleruntime-cro	20:35:00	0
26943	2	112	0,2	chrt	26941	-21	ld	20:06:21	0
898	2	110	0,2	sleep0	900	-21	if_err_eth2	21:56:05	0
3913	2	110	0,2	chrt	3914	-21	runrttasks	20:21:06	0
10045	2	110	0,2	sleep0	10044	-21	basename	00:35:31	0
16036	2	109	0,2	chrt	16037	-21	sleep	21:30:34	0
10485	2	109	0,2	sleep0	10487	-21	fschecks_count	19:40:33	0
9855	2	108	0,2	chrt	9862	-21	modprobe	19:40:00	0
20359	2	108	0,2	chrt	20360	-21	seq	20:46:49	0
1642	2	108	0,2	sleep0	1643	-21	chrt	23:34:06	0
21925	2	107	0,2	chrt	21926	-21	sleep	21:39:07	0
12231	2	106	0,2	chrt	12232	-21	sleep	21:24:54	0
2554	2	105	0,2	chrt	2555	-21	sleep	22:46:24	0
29616	2	102	0,3	chrt	29617	-21	fschecks_count	20:11:24	0
29977	2	101	0,3	sleep0	29976	-21	seq	00:16:42	0
24050	2	96	0,1	sleep0	24051	-21	chrt	21:41:51	0
26088	2	95	0,1	sleep0	26089	-21	seq	00:10:52	0
12229	2	95	0,2	sleep0	12231	-21	sh	23:50:14	0
17865	2	94	0,2	sleep0	17866	-21	chrt	23:58:08	0
21737	2	89	0,2	sleep0	21738	-21	chrt	22:26:43	0
5137	2	87	0,2	sleep0	5138	-21	chrt	22:02:07	0
15326	2	84	0,2	sleep0	15324	-21	/usr/sbin/munin	22:17:10	0
27900	2	81	0,2	sleep0	27901	-21	chrt	22:36:23	0
27021	2	80	0,2	sleep0	27022	-21	chrt	19:15:21	0
10454	2	79	0,2	sleep0	10455	-21	seq	23:46:55	0
8769	2	75	0,2	sleep0	8770	-21	date	23:45:04	0
1496	2	75	0,2	sleep0	1497	-21	seq	00:22:02	0
7095	2	72	0,2	sleep0	7097	-21	cut	00:30:50	0
6424	2	71	0,2	sleep0	6422	-21	cat	00:30:04	0
11471	2	70	0,2	sleep0	11474	-21	sort	22:11:14	0
8959	2	69	0,1	sleep0	8960	-21	chrt	20:30:01	0
25344	2	67	0,2	sleep0	25345	-21	seq	20:04:50	0
20908	2	67	11,44	sleep0	20719	-21	apt-get	19:05:42	0
32262	2	66	0,1	sleep0	32270	-21	seq	22:42:15	0
14588	2	56	0,1	sleep0	14589	-21	ps	19:46:23	0
27465	2	55	0,2	sleep0	27466	-21	chrt	23:24:05	0
20552	2	55	2,6	sleep0	20565	-21	ntpq	19:56:07	0
18966	2	54	0,1	sleep0	18969	-21	cut	23:11:07	0
635	2	53	8,37	sleep0	671	-21	ps	21:06:23	0
31432	2	53	5,40	sleep0	31392	-21	ntp_states	19:21:20	0
19450	2	53	0,1	sleep0	19452	-21	grep	00:00:54	0
17558	2	50	0,3	chrt	17540	-21	ntpq	19:51:14	0
19756	2	49	0,1	sleep0	19757	-21	seq	22:24:13	0
24312	2	48	0,3	sleep0	24308	-21	ssh	00:07:38	0
23733	90	47	18,22	cyclictest	0	-21	swapper	22:59:58	0
23733	90	47	14,16	cyclictest	0	-21	swapper	21:10:49	0
13739	2	47	0,2	chrt	13711	-21	ntpq	21:26:23	0
12992	2	47	3,36	sleep0	13030	-21	ps	23:02:13	0
30618	2	46	3,35	sleep0	30623	-21	sshd	21:02:26	0
23733	90	44	16,21	cyclictest	0	-21	swapper	23:27:35	0
17522	2	44	2,34	sleep0	17528	-21	runrttasks	23:09:35	0
23733	90	41	5,17	cyclictest	2882	-21	hddtemp_smartct	23:35:56	0
23733	90	41	4,10	cyclictest	694	-21	ntpq	20:16:00	0
23733	90	41	4,10	cyclictest	4813	-21	memory	19:30:48	0
23733	90	41	4,10	cyclictest	2390	-21	users	19:26:30	0
23733	90	40	4,17	cyclictest	22124	-21	apt-get	20:50:26	0
23733	90	39	5,26	cyclictest	25391	-21	aten2.4-expect	20:55:22	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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