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 06, 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
28157	2	121	0,2	chrt	28159	-21	cut	23:41:05	0
21539	2	121	0,2	sleep0	21540	-21	seq	20:12:44	0
26541	2	120	0,3	chrt	25224	-21	apt-get	22:01:39	0
21455	2	120	0,2	sleep0	21456	-21	chrt	21:53:59	0
12521	2	116	0,2	sleep0	12522	-21	irqrtprio	00:06:04	0
25955	2	115	0,3	chrt	25954	-21	seq	21:12:08	0
16559	2	115	0,2	chrt	16555	-21	telnet	22:35:32	0
26331	2	114	0,2	chrt	26320	-21	ssh	23:38:27	0
7289	2	113	0,2	sleep0	7290	-21	seq	23:58:20	0
25371	2	112	0,3	chrt	25373	-21	latency_hist	22:00:09	0
19354	2	111	0,3	chrt	19355	-21	sh	21:01:12	0
13933	2	109	0,2	chrt	13934	-21	ssh	21:42:33	0
4203	2	108	0,2	sleep0	4205	-21	cut	23:05:34	0
16310	2	106	0,2	chrt	16311	-21	sleep	23:23:18	0
24266	2	102	0,2	sleep0	24267	-21	chrt	00:23:45	0
16366	2	100	0,2	sleep0	16367	-21	seq	00:11:50	0
28614	2	99	0,4	chrt	28615	-21	sh	19:31:52	0
19866	2	99	0,2	sleep0	19867	-21	seq	23:28:52	0
6092	2	93	0,2	sleep0	6093	-21	seq	22:19:43	0
31596	2	92	0,2	sleep0	31597	-21	switchtime	22:57:18	0
30487	2	92	0,1	sleep0	30488	-21	chrt	21:19:15	0
17527	2	92	0,2	sleep0	17526	-21	awk	19:15:26	0
27196	2	89	0,2	sleep0	27197	-21	awk	20:21:26	0
11418	2	89	0,1	sleep0	11420	-21	cut	23:16:03	0
2526	2	88	0,2	sleep0	2527	-21	cat	23:02:18	0
7073	2	87	0,2	sleep0	7072	-21	seq	19:50:20	0
2112	2	84	0,2	sleep0	2113	-21	chrt	00:39:33	0
32234	2	83	0,1	sleep0	32235	-21	sh	22:10:14	0
28173	2	83	0,2	sleep0	28175	-21	wc	22:52:13	0
11394	2	77	0,1	sleep0	11395	-21	cut	00:05:04	0
2632	2	76	0,2	sleep0	2631	-21	awk	20:35:23	0
4224	2	75	0,2	sleep0	4225	-21	seq	19:45:26	0
14968	2	74	0,2	sleep0	14969	-21	seq	20:55:12	0
4146	2	73	0,1	sleep0	4147	-21	chrt	21:27:51	0
23620	2	73	0,2	sleep0	23619	-21	date	19:25:04	0
14046	90	73	39,24	cyclictest	2402	-21	tune2fs	23:51:28	0
18619	2	71	0,2	sleep0	18620	-21	chrt	21:50:03	0
28944	2	70	0,2	sleep0	28945	-21	chrt	22:05:18	0
14046	90	70	39,12	cyclictest	622	-21	ntpq	20:31:06	0
14046	90	69	41,19	cyclictest	1359	-21	ssh	21:24:10	0
14046	90	68	42,8	cyclictest	9222	-21	sleep	22:24:13	0
14046	90	68	41,8	cyclictest	28750	-21	sleep	20:25:06	0
14046	90	68	37,12	cyclictest	436	-21	runrttasks	23:48:50	0
14046	90	67	35,23	cyclictest	16780	-21	fschecks_count	20:05:34	0
8980	2	66	0,2	sleep0	8982	-21	cut	20:45:24	0
14046	90	66	42,14	cyclictest	24990	-21	apt-get	00:25:29	0
14046	90	66	40,19	cyclictest	16916	-1	kworker/u3:0	00:16:28	0
14046	90	66	37,22	cyclictest	412	-21	snmpd	22:45:53	0
14046	90	66	37,20	cyclictest	14639	-21	fschecks_time	19:10:35	0
14046	90	66	36,21	cyclictest	12395	-21	smartctl	20:50:38	0
14046	90	66	36,21	cyclictest	11514	-21	rm	21:39:28	0
14046	90	66	35,23	cyclictest	370	-21	cron	19:40:00	0
14046	90	65	44,14	cyclictest	10465	-21	latency_hist	23:15:03	0
14046	90	65	44,13	cyclictest	600	-21	runrttasks	19:40:07	0
14046	90	65	42,14	cyclictest	5802	-21	/usr/sbin/munin	21:30:56	0
14046	90	65	38,15	cyclictest	21395	-21	if_err_eth1	23:31:16	0
14046	90	65	37,20	cyclictest	13180	-21	wc	20:00:03	0
14046	90	65	35,21	cyclictest	13619	-21	diskstats	20:00:34	0
14046	90	64	43,13	cyclictest	7134	-21	mailstats	20:41:23	0
14046	90	64	37,14	cyclictest	28994	-21	seq	00:30:56	0
14046	90	64	36,21	cyclictest	13075	-21	apt-get	22:30:14	0
14046	90	64	36,20	cyclictest	23041	-21	fschecks_time	20:15:35	0
14046	90	64	35,21	cyclictest	24016	-21	grep	19:25:26	0
14046	90	63	43,12	cyclictest	20969	-21	ntpq	22:41:19	0
14046	90	63	36,20	cyclictest	21780	-21	/usr/sbin/munin	21:05:41	0
14046	90	62	42,13	cyclictest	9902	-21	aten2.4_rfpower	22:25:31	0
14046	90	60	40,13	cyclictest	14098	-21	cat	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