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 100 highest latencies:

System rackfslot4s.osadl.org (updated Tue Jul 15, 2025 12:44:33)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
15292	2	129	0,2	sleep0	15294	-21	proc_pri	07:36:21	0
30731	2	123	0,2	chrt	30732	-21	ls	08:06:31	0
20212	2	123	0,2	chrt	20205	-21	memory	11:46:10	0
25907	2	122	0,3	chrt	25904	-21	irqstats	09:00:48	0
13130	2	117	0,3	chrt	13129	-21	/usr/sbin/munin	07:32:17	0
4879	2	112	0,4	chrt	4878	-21	sendmail-msp	11:20:00	0
5156	2	110	0,2	chrt	5157	-21	sleep	09:22:34	0
15241	2	88	0,2	sleep0	15244	-21	cut	12:36:03	0
27849	2	85	0,2	sleep0	27850	-21	sh	11:02:04	0
7339	2	84	0,2	sleep0	7340	-21	rm	12:21:33	0
2283	2	75	0,2	sleep0	2286	-21	sh	10:16:06	0
20827	2	75	0,2	sleep0	20831	-21	irqrtprio	09:51:02	0
666	2	74	0,2	sleep0	667	-21	hostname	09:15:34	0
32668	2	62	0,2	sleep0	32729	-21	irqrtprio	11:11:04	0
25757	2	60	0,3	chrt	25755	-21	/usr/sbin/munin	11:56:16	0
26025	2	59	0,1	sleep0	26026	-21	sh	10:59:27	0
17386	2	57	0,1	sleep0	17383	-21	interrupts	11:41:45	0
1067	90	56	21,24	cyclictest	0	-21	swapper	10:21:01	0
1067	90	54	24,12	cyclictest	29968	-21	diskmemload	12:06:12	0
1067	90	53	30,13	cyclictest	22865	-21	apt-get	09:55:27	0
1067	90	53	21,23	cyclictest	859	-21	snmpd	09:50:01	0
13603	2	52	0,2	sleep0	13604	-21	aten2.4_rfpower	11:35:32	0
1067	90	52	19,14	cyclictest	23193	-21	ntpq	11:51:40	0
1067	90	51	19,14	cyclictest	954	-21	df_inode	12:10:46	0
1067	90	51	18,23	cyclictest	15567	-21	sshd	10:40:36	0
1067	90	51	17,24	cyclictest	5937	-21	apt-get	09:25:48	0
1067	90	51	17,14	cyclictest	31560	-21	diskstats	10:10:45	0
8192	2	50	0,2	sleep0	8198	-21	ntpq	10:26:24	0
30006	2	50	0,1	sleep0	30007	-21	cat	09:10:04	0
1067	90	50	21,12	cyclictest	4473	-21	ntpq	12:16:24	0
1067	90	50	19,22	cyclictest	20721	-21	ssh	10:50:02	0
1067	90	50	18,23	cyclictest	11806	-21	/usr/sbin/munin	09:35:46	0
1067	90	50	16,15	cyclictest	20011	-21	apt-get	08:50:28	0
1067	90	49	29,12	cyclictest	883	-21	runrttasks	09:10:24	0
1067	90	49	26,13	cyclictest	22734	-21	seq	07:51:06	0
1067	90	49	24,16	cyclictest	7795	-21	apt-get	11:25:21	0
1067	90	49	18,22	cyclictest	21427	-21	hddtemp_smartct	10:50:55	0
1067	90	49	18,22	cyclictest	0	-21	swapper	12:33:40	0
1067	90	49	17,23	cyclictest	10387	-21	apt-get	11:31:38	0
1067	90	49	15,14	cyclictest	5986	-21	sleep	11:21:11	0
1067	90	49	15,14	cyclictest	28048	-21	hddtemp_smartct	12:00:55	0
1067	90	48	24,15	cyclictest	29768	-21	seq	10:06:53	0
1067	90	48	24,15	cyclictest	17260	-21	apt-get	08:45:17	0
1067	90	48	23,15	cyclictest	9816	-21	irqstats	12:26:08	0
1067	90	48	20,20	cyclictest	29968	-21	diskmemload	09:32:38	0
1067	90	48	18,22	cyclictest	14772	-21	aten2.4_rfpower	09:40:33	0
1067	90	48	18,21	cyclictest	13587	-21	memory	10:36:13	0
1067	90	48	17,21	cyclictest	30515	-21	ntp_states	11:07:00	0
1067	90	48	17,21	cyclictest	1662	-21	hddtemp_smartct	07:10:39	0
1067	90	48	16,22	cyclictest	7627	-21	python3	07:21:26	0
1067	90	48	15,23	cyclictest	20131	-21	ntpq	07:45:58	0
1067	90	47	15,23	cyclictest	4628	-21	apt-get	08:20:14	0
1067	90	47	14,13	cyclictest	3167	-21	memory	08:16:38	0
1067	90	47	14,13	cyclictest	23607	-21	ntpq	08:56:06	0
1067	90	46	23,14	cyclictest	17662	-21	ntpq	07:41:02	0
1067	90	46	21,15	cyclictest	25654	-21	apt-get	10:00:22	0
1067	90	46	21,14	cyclictest	31768	-21	apt-get	08:10:15	0
1067	90	46	16,22	cyclictest	8354	-21	ntpq	08:26:24	0
1067	90	46	15,22	cyclictest	9089	-21	df	07:25:30	0
1067	90	46	15,13	cyclictest	3725	-21	dpkg	07:15:15	0
1067	90	46	14,22	cyclictest	0	-21	swapper	10:30:44	0
31978	2	45	10,20	sleep0	31982	-21	irqstats	07:06:03	0
1067	90	45	13,23	cyclictest	27899	-21	ntp_states	08:01:18	0
1067	90	44	23,13	cyclictest	24643	-21	fw_packets	07:55:38	0
1067	90	44	16,19	cyclictest	12177	-21	/usr/sbin/munin	08:35:49	0
1067	90	44	15,21	cyclictest	10698	-21	awk	08:30:59	0
1067	90	44	13,22	cyclictest	15058	-21	diskstats	08:40:33	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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