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 Oct 21, 2025 12:44:34)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
28200	2	121	0,3	chrt	28192	-21	ntp_states	10:52:21	0
20119	2	110	0,2	sleep0	20118	-21	basename	08:40:23	0
31796	2	109	0,3	chrt	31797	-21	sleep	10:00:55	0
13328	2	109	0,2	chrt	13329	-21	sleep	11:24:38	0
2206	2	103	0,2	chrt	2207	-21	sh	12:02:18	0
7793	2	89	0,2	sleep0	7796	-21	sed	12:12:17	0
29716	2	87	0,2	sleep0	29718	-21	cut	10:55:36	0
21838	2	85	0,2	sleep0	21839	-21	cut	11:40:04	0
20484	2	82	0,1	sleep0	20483	-21	grep	09:41:28	0
10763	2	78	0,3	sleep0	10764	-21	ssh	09:24:11	0
3084	2	77	0,1	sleep0	3085	-21	fschecks_time	11:05:54	0
27841	2	77	0,1	sleep0	27842	-21	ssh	11:50:44	0
14796	2	76	0,2	sleep0	14798	-21	awk	12:25:36	0
6612	90	74	4,50	cyclictest	8831	-21	ssh	12:15:12	0
6612	90	73	6,57	cyclictest	750	-21	ntpq	08:00:52	0
6612	90	73	6,57	cyclictest	3116	-21	ssh	09:10:54	0
6612	90	73	5,47	cyclictest	17148	-21	apt-get	12:31:04	0
6612	90	73	4,59	cyclictest	2611	-21	diskmemload	09:40:07	0
6612	90	72	6,56	cyclictest	28037	-21	apt-get	09:56:12	0
6612	90	72	6,55	cyclictest	24692	-21	users	09:48:11	0
6612	90	72	5,57	cyclictest	21254	-21	ssh	10:40:27	0
6612	90	72	4,58	cyclictest	24289	-21	df	10:45:37	0
6612	90	72	4,58	cyclictest	21694	-21	sh	12:37:07	0
6612	90	72	4,49	cyclictest	18441	-21	ssh	10:35:21	0
6612	90	71	9,54	cyclictest	8091	-21	ssh	11:15:17	0
6612	90	71	9,53	cyclictest	2611	-21	diskmemload	12:09:58	0
6612	90	71	7,53	cyclictest	16403	-21	apt-get	11:30:18	0
6612	90	71	6,55	cyclictest	30002	-21	munin-run	09:00:03	0
6612	90	71	5,56	cyclictest	13974	-21	ntpq	10:26:19	0
6612	90	71	5,45	cyclictest	23394	-21	ntpq	07:41:53	0
6612	90	71	3,59	cyclictest	14432	-21	cut	12:25:03	0
6612	90	70	7,52	cyclictest	4858	-21	apt-get	08:10:14	0
6612	90	70	6,43	cyclictest	6989	-21	apt-get	10:15:45	0
6612	90	70	5,55	cyclictest	28138	-21	ntpq	07:50:50	0
6612	90	70	5,44	cyclictest	27042	-21	python3	09:52:10	0
6612	90	70	4,57	cyclictest	6286	-21	ssh	09:16:07	0
6612	90	70	4,57	cyclictest	14899	-21	ntpq	11:26:44	0
6612	90	70	4,56	cyclictest	9940	-21	/usr/sbin/munin	08:21:27	0
6612	90	70	4,56	cyclictest	5643	-21	cpuspeed	11:10:36	0
6612	90	70	3,48	cyclictest	859	-21	snmpd	10:11:14	0
6612	90	70	12,50	cyclictest	12992	-21	ntp_states	07:21:17	0
6612	90	69	6,54	cyclictest	32760	-21	ssh	11:59:54	0
6612	90	69	6,52	cyclictest	22583	-21	apt-get	08:45:20	0
6612	90	69	5,54	cyclictest	31498	-21	sleep	09:01:33	0
6612	90	69	4,56	cyclictest	18961	-21	cat	08:36:27	0
6612	90	69	4,55	cyclictest	859	-21	snmpd	11:42:10	0
6612	90	69	4,55	cyclictest	2854	-21	ssh	10:06:36	0
6612	90	69	4,55	cyclictest	12092	-21	cut	09:26:07	0
6612	90	69	4,54	cyclictest	10512	-21	diskstats	10:20:47	0
6612	90	69	4,48	cyclictest	10161	-21	memory	07:15:50	0
6612	90	69	4,46	cyclictest	514	-21	ssh	11:01:03	0
6612	90	69	16,43	cyclictest	3078	-21	irqrtprio	08:05:41	0
6612	90	69	15,37	cyclictest	2611	-21	diskmemload	09:32:40	0
6612	90	69	13,47	cyclictest	12685	-21	awk	08:25:26	0
6612	90	68	5,53	cyclictest	7795	-21	ntpq	07:11:03	0
6612	90	68	5,53	cyclictest	26482	-21	python3	08:51:31	0
6612	90	68	5,52	cyclictest	24702	-21	apt-get	11:45:21	0
6612	90	68	4,55	cyclictest	16029	-21	ssh	10:30:49	0
6612	90	68	4,55	cyclictest	15176	-21	aten2.4_rfpower	08:30:25	0
6612	90	68	4,54	cyclictest	25767	-21	sh	07:46:07	0
6612	90	68	17,43	cyclictest	14664	-21	/usr/sbin/munin	07:25:32	0
6612	90	67	5,52	cyclictest	19389	-21	apt-get	07:35:20	0
6612	90	67	4,55	cyclictest	16847	-21	apt-get	07:30:17	0
6612	90	66	4,53	cyclictest	8350	-21	ntpq	08:15:54	0
6612	90	66	3,46	cyclictest	554	-21	diskstats	09:05:33	0
6612	90	65	4,50	cyclictest	29713	-21	/usr/sbin/munin	07:55:23	0
6612	90	60	5,46	cyclictest	6639	-21	cat	07:10:03	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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