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 Thu Nov 13, 2025 00:44:34)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
497	2	124	0,2	chrt	499	-21	cut	22:56:09	0
25068	2	119	0,2	chrt	25071	-21	aten2.4_rfpower	23:40:46	0
6086	2	117	0,2	chrt	6087	-21	sleep	00:05:04	0
21893	2	113	0,2	chrt	21894	-21	ssh	21:39:45	0
22900	2	112	0,3	chrt	22901	-21	cat	20:40:40	0
22086	2	109	0,3	chrt	22087	-21	sleep	22:37:07	0
20917	2	109	0,2	chrt	20916	-21	cat	00:31:02	0
31493	2	108	0,2	chrt	31492	-21	mailstats	20:56:24	0
30521	2	108	0,3	chrt	30520	-21	awk	23:50:32	0
28864	2	104	0,2	chrt	28865	-21	sleep	19:48:58	0
11835	2	104	0,2	chrt	11836	-21	sleep	20:19:59	0
25031	2	97	0,2	sleep0	25032	-21	ssh	00:38:10	0
7312	2	92	13,20	sleep0	7319	-21	ntpq	19:05:49	0
15670	2	89	0,2	sleep0	15672	-21	grep	00:21:10	0
27831	2	82	0,2	sleep0	27832	-21	sh	22:47:12	0
19875	2	82	0,2	sleep0	19876	-21	ls	19:30:47	0
10707	2	80	0,2	chrt	10686	-21	ntpq	22:16:37	0
14456	2	78	0,2	sleep0	14455	-21	apt-key	20:25:04	0
2521	2	74	0,2	sleep0	2519	-21	timerwakeupswit	23:57:43	0
10009	2	74	0,1	sleep0	10012	-21	cut	00:11:04	0
16767	2	61	0,2	sleep0	16769	-21	timerwakeupswit	22:27:22	0
15946	2	61	0,2	sleep0	15947	-21	sh	21:28:37	0
8705	90	56	27,21	cyclictest	26385	-21	ntpq	21:47:04	0
8705	90	54	26,20	cyclictest	18207	-21	ssh	00:26:03	0
8705	90	53	26,17	cyclictest	6322	-21	apt-get	00:05:27	0
8705	90	53	24,20	cyclictest	7172	-21	users	21:12:35	0
8705	90	53	22,23	cyclictest	1164	-21	rm	22:00:36	0
8705	90	53	20,23	cyclictest	27778	-21	/usr/sbin/munin	21:52:19	0
8705	90	53	19,15	cyclictest	21034	-21	ntpq	20:36:22	0
8705	90	52	23,20	cyclictest	11920	-21	apt-get	00:15:19	0
8705	90	52	19,23	cyclictest	9461	-21	irqrtprio	19:10:42	0
8705	90	52	18,24	cyclictest	24250	-21	ps	22:41:02	0
8705	90	51	28,14	cyclictest	30574	-21	apt-get	21:55:26	0
8705	90	51	27,16	cyclictest	22192	-21	apt-get	21:40:17	0
8705	90	51	27,15	cyclictest	14405	-21	apt-get	20:25:44	0
8705	90	51	27,14	cyclictest	3445	-21	ntpq	23:01:24	0
8705	90	51	26,16	cyclictest	10978	-21	apt-get	21:20:22	0
8705	90	51	26,15	cyclictest	3740	-21	apt-get	22:05:28	0
8705	90	51	22,19	cyclictest	27656	-21	apt-get	20:51:10	0
8705	90	51	20,22	cyclictest	28878	-21	sshd	23:46:41	0
8705	90	51	20,21	cyclictest	20540	-21	ssh	23:32:07	0
8705	90	51	20,21	cyclictest	17783	-21	ssh	23:27:08	0
8705	90	51	20,20	cyclictest	5160	-21	diskmemload	21:15:10	0
8705	90	51	19,22	cyclictest	6953	-21	/usr/sbin/munin	20:10:27	0
8705	90	51	19,22	cyclictest	5094	-21	/usr/sbin/munin	23:06:35	0
8705	90	51	18,13	cyclictest	17986	-21	ntpq	21:32:06	0
8705	90	51	17,25	cyclictest	6366	-21	apt-get	22:11:02	0
8705	90	50	25,15	cyclictest	29221	-21	apt-get	22:50:19	0
8705	90	50	25,15	cyclictest	22099	-21	ps	19:35:44	0
8705	90	50	24,17	cyclictest	3407	-21	ps	21:05:42	0
8705	90	50	20,21	cyclictest	13990	-21	diskstats	23:20:46	0
8705	90	50	19,22	cyclictest	1284	-21	ntpq	21:00:58	0
8705	90	50	19,22	cyclictest	11815	-21	ssh	23:16:14	0
8705	90	50	19,12	cyclictest	7692	-21	apt-get	23:11:06	0
8705	90	50	19,12	cyclictest	5057	-21	sshd	20:05:43	0
8705	90	50	19,12	cyclictest	502	-21	ntp_states	19:56:12	0
8705	90	50	18,22	cyclictest	1905	-21	/usr/sbin/munin	20:00:46	0
8705	90	49	29,13	cyclictest	22287	-21	sh	23:35:54	0
8705	90	49	26,14	cyclictest	31658	-21	latency_hist	19:55:03	0
8705	90	49	26,14	cyclictest	17310	-21	apt-get	20:30:16	0
8705	90	49	25,15	cyclictest	12828	-21	hddtemp_smartct	22:20:55	0
8705	90	48	24,15	cyclictest	17820	-21	apt-get	22:30:24	0
8705	90	48	24,14	cyclictest	13909	-21	apt-get	19:20:19	0
8705	90	48	17,12	cyclictest	17560	-21	ntpq	19:26:12	0
8705	90	48	16,12	cyclictest	11338	-21	apt-get	19:15:12	0
8705	90	47	28,11	cyclictest	25741	-21	kernelversion	20:45:46	0
8705	90	47	22,14	cyclictest	24031	-21	apt-get	19:40:19	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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