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 Sat Sep 19, 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
22024	2	307	0,2	chrt	22023	-21	seq	19:05:17	0
29833	2	122	0,3	chrt	29834	-21	chrt	21:50:13	0
22032	2	122	0,2	sleep0	22033	-21	seq	00:03:18	0
6432	2	120	0,2	chrt	6430	-21	ld	22:51:16	0
25200	2	119	0,2	sleep0	25201	-21	users	21:42:31	0
3364	2	118	0,2	chrt	3361	-21	sshd	22:46:42	0
17164	2	118	0,2	sleep0	17163	-21	seq	22:19:29	0
26540	2	117	0,3	chrt	26541	-21	ssh	21:45:21	0
19516	2	113	0,2	chrt	19514	-21	threads	22:22:19	0
13864	2	112	0,2	chrt	13865	-21	sleep	20:35:36	0
2947	2	111	0,2	sleep0	2944	-21	ssh	21:57:54	0
27309	2	111	0,2	chrt	27310	-21	sleep	20:56:05	0
2634	2	111	0,3	chrt	2635	-21	runrttasks	00:22:42	0
7049	2	110	0,3	chrt	7050	-21	runrttasks	00:29:58	0
13510	2	105	0,2	chrt	13511	-21	runrttasks	00:39:33	0
13217	2	97	0,2	sleep0	13216	-21	awk	23:50:35	0
12113	2	97	0,1	sleep0	12111	-21	aten2.4-expect	23:00:32	0
21232	2	86	0,2	sleep0	21233	-21	grep	22:25:35	0
20319	2	83	0,2	sleep0	20322	-21	tail	20:46:15	0
9239	2	82	0,2	sleep0	9240	-21	find	22:07:21	0
14395	2	82	0,2	sleep0	14396	-21	seq	19:44:13	0
4509	2	81	0,1	sleep0	4510	-21	chrt	22:00:43	0
3141	2	80	0,4	chrt	3020	-21	apt-get	23:35:32	0
25282	2	80	0,2	sleep0	25285	-21	apt-config	23:20:08	0
1027	2	76	0,1	sleep0	1028	-21	chrt	22:43:22	0
9794	2	75	0,2	sleep0	9796	-21	awk	22:56:22	0
19453	2	75	0,2	sleep0	19452	-21	grep	00:00:01	0
9410	2	74	0,2	sleep0	9411	-21	chrt	23:44:54	0
8474	2	74	0,2	sleep0	8475	-21	ldconfig	00:31:16	0
3360	2	73	0,2	sleep0	3361	-21	collect2	19:26:01	0
8111	2	71	0,2	sleep0	8112	-21	ld	21:17:20	0
13104	2	71	0,1	sleep0	13105	-21	chrt	22:13:10	0
1520	2	69	0,2	sleep0	1522	-21	uptime	21:06:29	0
15960	2	67	0,1	sleep0	15961	-21	if_err_eth2	23:06:01	0
19133	2	64	0,2	sleep0	19131	-21	aten2.4_rfpower	23:10:54	0
28591	2	60	4,46	sleep0	28592	-21	ntp_states	20:06:16	0
918	2	59	4,8	sleep0	929	-21	ld	23:31:21	0
12641	2	59	0,2	sleep0	12645	-21	chrt	21:24:28	0
30851	2	58	0,1	sleep0	30852	-21	ssh	23:27:25	0
983	2	57	0,1	sleep0	984	-21	cut	20:15:03	0
5356	2	54	0,2	sleep0	5357	-21	chrt	19:30:15	0
31888	2	53	3,8	sleep0	31894	-21	ssh	00:18:06	0
28593	2	53	4,9	sleep0	28449	-21	apt-get	19:15:36	0
24990	90	53	14,21	cyclictest	0	-21	swapper	21:34:54	0
24378	2	53	0,1	sleep0	24379	-21	seq	22:30:31	0
1090	2	53	3,7	sleep0	1038	-21	apt-get	20:15:21	0
23681	2	52	2,42	sleep0	23719	-21	ssh	00:06:02	0
16736	2	51	3,7	sleep0	16792	-21	basename	20:40:24	0
5412	2	50	0,2	chrt	5410	-21	ld	20:21:09	0
27730	2	48	1,40	sleep0	27727	-21	ssh	23:23:10	0
24990	90	48	18,23	cyclictest	0	-21	swapper	00:14:13	0
24990	90	48	17,21	cyclictest	0	-21	swapper	21:28:05	0
22802	2	48	0,1	sleep0	22803	-21	chrt	21:39:47	0
16080	2	48	3,36	sleep0	16074	-21	ntpq	19:46:13	0
24990	90	47	17,23	cyclictest	0	-21	swapper	21:13:07	0
24990	90	46	17,22	cyclictest	0	-21	swapper	23:47:50	0
24990	90	45	5,19	cyclictest	18973	-21	ntpq	19:50:49	0
13324	2	45	0,1	sleep0	13341	-21	latency_hist	20:35:02	0
24990	90	43	21,15	cyclictest	0	-21	swapper	20:50:23	0
7728	2	42	0,1	sleep0	7730	-21	fschecks_time	20:25:34	0
24990	90	42	4,19	cyclictest	22080	-21	ntpq	19:55:50	0
24990	90	42	12,14	cyclictest	0	-21	swapper	19:24:15	0
24990	90	41	6,27	cyclictest	27368	-21	apt-get	22:35:49	0
24990	90	41	15,20	cyclictest	32109	-21	runrttasks	21:04:52	0
24990	90	39	4,17	cyclictest	26204	-21	ntpq	19:10:55	0
24990	90	38	12,17	cyclictest	0	-21	swapper	19:35:10	0
24990	90	37	6,11	cyclictest	24762	-21	hddtemp_smartct	20:00:46	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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