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 Fri Jun 05, 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
15702	2	124	0,3	chrt	15698	-21	ntpq	21:31:26	0
1409	2	122	0,3	chrt	996	-21	/usr/sbin/munin	21:10:40	0
4554	2	120	0,2	chrt	4552	-21	sshd	22:03:27	0
9459	2	118	0,2	chrt	9454	-21	ntpq	20:30:57	0
8292	2	118	0,2	chrt	8293	-21	chrt	00:35:10	0
29644	2	118	0,2	sleep0	29677	-21	cat	22:41:08	0
32319	2	116	0,3	chrt	32320	-21	dpkg	22:45:13	0
17623	2	116	0,2	chrt	17625	-21	cut	00:00:31	0
9679	2	113	0,2	chrt	9678	-21	seq	23:00:00	0
26746	2	112	0,3	chrt	26748	-21	sleep	00:13:50	0
11223	2	112	0,2	sleep0	11224	-21	seq	21:25:34	0
10983	2	112	0,2	sleep0	10986	-21	cut	23:01:11	0
4551	2	111	0,3	chrt	4550	-21	basename	21:15:35	0
27726	2	110	0,2	chrt	27727	-21	sh	19:16:17	0
24910	2	110	0,3	chrt	24909	-21	seq	20:04:31	0
5197	2	108	0,2	chrt	5200	-21	cut	23:41:08	0
32336	2	106	0,3	chrt	32337	-21	sh	21:56:17	0
31549	2	106	0,2	chrt	31551	-21	chrt	21:06:08	0
5934	2	105	0,2	chrt	5935	-21	ssh	22:53:58	0
28062	2	104	0,2	chrt	28063	-21	aten2.4-expect	21:50:34	0
3845	2	101	0,2	sleep0	3846	-21	seq	23:39:42	0
28931	2	100	0,1	sleep0	28932	-21	seq	23:28:18	0
10659	2	100	0,2	sleep0	10661	-21	ntpq	19:41:01	0
16721	2	97	0,1	sleep0	16722	-21	chrt	23:58:43	0
6176	2	94	0,2	sleep0	6177	-21	cat	22:06:05	0
32435	2	92	0,2	sleep0	32436	-21	seq	19:24:56	0
24213	2	90	0,2	sleep0	24214	-21	seq	22:32:27	0
3148	2	82	0,3	chrt	3128	-21	/usr/sbin/munin	19:30:02	0
22526	2	79	0,2	sleep0	22525	-21	ld	00:07:15	0
29861	2	78	0,2	sleep0	29862	-21	chrt	00:18:19	0
23181	90	76	46,22	cyclictest	20427	-21	ssh	22:27:05	0
22871	2	75	0,2	sleep0	22869	-21	open_files	21:42:18	0
23181	90	73	40,15	cyclictest	15556	-21	sleep	22:20:24	0
23181	90	72	46,17	cyclictest	25729	-21	ntpq	21:46:24	0
23181	90	72	38,22	cyclictest	14726	-21	/usr/sbin/munin	20:41:37	0
23181	90	71	46,15	cyclictest	808	-21	diskmemload	21:35:54	0
23181	90	71	42,20	cyclictest	7524	-21	ssh	23:45:13	0
23181	90	71	38,23	cyclictest	8752	-21	ssh	22:10:11	0
23181	90	71	38,22	cyclictest	16526	-21	/usr/sbin/munin	23:11:13	0
23181	90	71	38,14	cyclictest	12537	-21	collect2	23:52:14	0
3021	2	70	0,1	sleep0	3022	-21	ld	00:26:32	0
23181	90	70	38,22	cyclictest	808	-21	diskmemload	00:33:07	0
23181	90	70	38,22	cyclictest	20255	-21	sshd	20:48:28	0
23181	90	70	37,22	cyclictest	19035	-21	/usr/sbin/munin	19:55:42	0
13484	2	70	0,2	sleep0	13485	-21	basename	23:05:35	0
23181	90	69	40,10	cyclictest	17321	-21	ntpq	19:51:47	0
23181	90	69	39,20	cyclictest	31352	-21	ssh	23:31:52	0
23181	90	69	37,23	cyclictest	23313	-21	/usr/sbin/munin	19:10:41	0
23181	90	68	46,13	cyclictest	12245	-21	ssh	22:15:35	0
23181	90	68	38,12	cyclictest	31402	-21	fschecks_time	00:20:53	0
23181	90	68	38,11	cyclictest	20290	-21	df_inode	23:15:43	0
23181	90	68	37,22	cyclictest	6388	-21	/usr/sbin/munin	19:35:49	0
23181	90	68	34,14	cyclictest	22490	-21	python3	20:51:24	0
23181	90	67	38,21	cyclictest	26131	-21	fschecks_time	22:35:55	0
23181	90	67	37,20	cyclictest	27407	-21	runrttasks	21:00:24	0
23181	90	67	37,11	cyclictest	6668	-21	processes	20:26:22	0
23181	90	67	36,23	cyclictest	26015	-21	ps	20:05:50	0
23181	90	67	35,23	cyclictest	1978	-21	chrt	20:20:01	0
23181	90	67	34,16	cyclictest	25172	-21	ntpq	20:55:55	0
23181	90	66	38,21	cyclictest	29338	-21	kworker/u2:2	21:21:02	0
23181	90	66	36,12	cyclictest	23211	-21	apt-get	23:20:30	0
23181	90	66	36,11	cyclictest	11561	-21	aten2.4_rfpower	20:35:24	0
23181	90	66	34,12	cyclictest	5031	-21	users	19:31:47	0
23181	90	65	43,13	cyclictest	12967	-21	df_inode	19:45:30	0
23181	90	65	42,15	cyclictest	3736	-21	timerandwakeup	20:21:28	0
23181	90	65	35,22	cyclictest	28493	-21	aten2.4-expect	20:10:21	0
23181	90	60	39,12	cyclictest	23261	-21	date	19:10:03	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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