OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, 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
Special All - All RT - Optimization - Ethernet - Thumbnails - Next

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 rackeslot4s.osadl.org (updated Mon May 18, 2026 00:44:05)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
282061	99	51	46,3	cyclictest	576850	-21	latency_hist	23:55:02	1
282068	99	40	37,2	cyclictest	422051	-21	kworker/u8:0+flush-259:0	21:45:25	3
282061	99	36	32,3	cyclictest	608474	-21	apt-get	00:25:11	1
282068	99	34	31,2	cyclictest	275832	-21	kworker/u8:2+events_unbound	20:40:23	3
282068	99	34	30,3	cyclictest	385380	-21	kworker/u8:1+events_unbound	21:10:25	3
282068	99	33	30,2	cyclictest	468620	-21	kworker/u8:0+events_unbound	22:30:15	3
282068	99	31	29,1	cyclictest	587647	-21	kworker/u8:1+flush-259:0	00:30:26	3
282057	99	31	0,29	cyclictest	1	-21	systemd	20:05:58	0
282068	99	29	26,2	cyclictest	385380	-21	kworker/u8:1+events_unbound	21:53:58	3
282057	99	29	24,4	cyclictest	534640	-21	ntpq	23:10:24	0
282068	99	27	20,2	cyclictest	530392	-21	kworker/u8:2+events_unbound	23:40:20	3
282065	99	27	24,2	cyclictest	618580	-21	kworker/u8:3+flush-259:0	00:40:01	2
282068	99	26	24,1	cyclictest	411537	-21	kworker/u8:2+flush-259:0	21:25:24	3
282068	99	26	23,2	cyclictest	318341	-21	kworker/u8:0+flush-259:0	19:50:16	3
282068	99	25	22,2	cyclictest	499668	-21	kworker/u8:4+events_unbound	23:30:15	3
282068	99	25	22,2	cyclictest	499668	-21	kworker/u8:4+events_unbound	23:25:13	3
282068	99	25	22,2	cyclictest	468620	-21	kworker/u8:0+events_unbound	22:15:24	3
282068	99	25	22,2	cyclictest	385380	-21	kworker/u8:1+events_unbound	21:05:25	3
282068	99	25	22,2	cyclictest	364727	-21	kworker/u8:0+events_unbound	20:45:23	3
282068	99	25	21,3	cyclictest	540886	-21	kworker/u8:3+events_unbound	23:20:25	3
282061	99	25	19,4	cyclictest	252	-21	systemd-journal	19:43:56	1
282068	99	24	21,2	cyclictest	364727	-21	kworker/u8:0+flush-259:0	20:50:25	3
282068	99	24	21,2	cyclictest	318341	-21	kworker/u8:0+events_unbound	19:55:17	3
282068	99	24	21,2	cyclictest	281857	-21	kworker/u8:1+events_unbound	20:20:15	3
282068	99	24	20,3	cyclictest	540886	-21	kworker/u8:3+events_unbound	00:08:19	3
282068	99	24	20,3	cyclictest	411537	-21	kworker/u8:2+events_unbound	21:20:24	3
282061	99	24	19,3	cyclictest	442713	-21	apt-get	21:45:12	1
282068	99	23	20,2	cyclictest	468620	-21	kworker/u8:0+events_unbound	22:20:24	3
282068	99	23	20,2	cyclictest	281857	-21	kworker/u8:1+events_unbound	20:31:59	3
282068	99	23	19,3	cyclictest	385380	-21	kworker/u8:1+events_unbound	20:56:58	3
282065	99	23	21,2	cyclictest	364727	-21	kworker/u8:0+events_unbound	20:45:25	2
282065	99	23	20,2	cyclictest	468620	-21	kworker/u8:0+flush-259:0	23:00:00	2
282068	99	22	19,2	cyclictest	618580	-21	kworker/u8:3+events_unbound	00:35:17	3
282068	99	22	18,3	cyclictest	587647	-21	kworker/u8:1+events_unbound	00:27:59	3
282068	99	22	18,3	cyclictest	587647	-21	kworker/u8:1+events_unbound	00:20:23	3
282068	99	22	18,3	cyclictest	411537	-21	kworker/u8:2+events_unbound	22:29:57	3
282065	99	22	18,3	cyclictest	468620	-21	kworker/u8:0+flush-259:0	23:15:22	2
282057	99	22	18,3	cyclictest	370115	-21	apt-get	20:35:12	0
282068	99	21	18,2	cyclictest	468620	-21	kworker/u8:0+flush-259:0	22:45:16	3
282068	99	21	18,2	cyclictest	364727	-21	kworker/u8:0+events_unbound	20:35:22	3
282068	99	21	18,2	cyclictest	281857	-21	kworker/u8:1+events_unbound	20:14:59	3
282068	99	21	18,2	cyclictest	281857	-21	kworker/u8:1+events_unbound	20:05:26	3
282065	99	21	18,2	cyclictest	275832	-21	kworker/u8:2+flush-259:0	19:10:25	2
282065	99	21	15,4	cyclictest	411520	-21	latency_hist	21:15:01	2
282061	99	21	15,4	cyclictest	252	-21	systemd-journal	20:30:58	1
282061	99	21	11,9	cyclictest	396332	-21	apt-get	21:00:12	1
282057	99	21	19,1	cyclictest	509753	-21	idleruntime-cro	22:50:00	0
282057	99	21	18,2	cyclictest	484022	-21	idleruntime-cro	22:25:00	0
282057	99	21	16,3	cyclictest	354451	-21	latency_hist	20:20:00	0
282068	99	20	17,2	cyclictest	385380	-21	kworker/u8:1+events_unbound	21:55:22	3
282065	99	20	17,2	cyclictest	499668	-21	kworker/u8:4+flush-259:0	23:45:01	2
282065	99	20	16,3	cyclictest	302967	-21	cat	19:30:01	2
282065	99	20	16,3	cyclictest	234091	-21	kworker/u8:3+events_unbound	19:15:23	2
282061	99	20	17,2	cyclictest	587620	-21	systemd-run	00:05:00	1
282061	99	20	14,4	cyclictest	349294	-21	latency_hist	20:14:59	1
282057	99	20	17,2	cyclictest	468620	-21	kworker/u8:0+flush-259:0	22:30:18	0
282068	99	19	16,2	cyclictest	540886	-21	kworker/u8:3+flush-259:0	23:50:15	3
282068	99	19	16,2	cyclictest	281857	-21	kworker/u8:1+events_unbound	19:35:22	3
282065	99	19	16,2	cyclictest	468620	-21	kworker/u8:0+flush-259:0	22:30:22	2
282065	99	19	14,3	cyclictest	252	-21	systemd-journal	00:33:46	2
282061	99	19	16,2	cyclictest	0	-21	swapper/1	23:20:00	1
282068	99	18	15,2	cyclictest	571725	-21	kworker/u8:0+events_unbound	00:14:59	3
282068	99	18	15,2	cyclictest	566807	-21	apt-get	23:45:13	3
282068	99	18	15,2	cyclictest	458341	-21	kworker/u8:3+events_unbound	22:05:15	3
282068	99	18	15,2	cyclictest	411537	-21	kworker/u8:2+events_unbound	22:10:23	3
282068	99	18	14,3	cyclictest	281857	-21	kworker/u8:1+events_unbound	19:10:28	3
282061	99	18	4,11	cyclictest	494659	-21	cut	22:35:11	1
282061	99	18	15,2	cyclictest	0	-21	swapper/1	21:30:00	1
282061	99	18	12,4	cyclictest	551008	-21	kworker/u8:1+flush-259:0	23:35:16	1
282061	99	18	10,7	cyclictest	324275	-21	irqcore	19:50:17	1
282061	99	18	0,3	cyclictest	339023	-21	latency_hist	20:05:01	1
282061	99	18	0,2	cyclictest	375019	-21	latency_hist	20:40:01	1
282057	99	18	16,1	cyclictest	504626	-21	latency_hist	22:45:00	0
282057	99	18	14,3	cyclictest	582677	-21	/usr/sbin/munin	00:00:14	0
282057	99	18	13,4	cyclictest	510030	-21	apt-get	22:50:11	0
282057	99	18	12,4	cyclictest	287409	-21	latency_hist	19:15:00	0
282068	99	17	14,2	cyclictest	551008	-21	kworker/u8:1+flush-259:0	23:35:15	3
282068	99	17	14,2	cyclictest	411537	-21	kworker/u8:2+events_unbound	21:40:21	3
282068	99	17	14,2	cyclictest	287431	-21	kworker/u8:4+events_unbound	19:30:18	3
282065	99	17	5,6	cyclictest	484028	-21	munin-run	22:25:00	2
282065	99	17	14,2	cyclictest	0	-21	swapper/2	00:00:00	2
282065	99	17	13,2	cyclictest	0	-21	swapper/2	00:05:00	2
282065	99	17	11,4	cyclictest	457464	-21	ntpq	21:55:22	2
282061	99	17	7,9	cyclictest	0	-21	swapper/1	23:50:00	1
282061	99	17	5,10	cyclictest	613618	-21	apt-get	00:30:14	1
282061	99	17	4,11	cyclictest	493843	-21	grep	22:30:26	1
282061	99	17	1,5	cyclictest	566547	-21	apt	23:45:00	1
282061	99	17	14,2	cyclictest	468609	-21	idleruntime-cro	22:10:00	1
282061	99	17	1,3	cyclictest	458312	-21	cron	22:00:00	1
282061	99	17	0,3	cyclictest	432140	-21	awk	21:35:00	1
282057	99	17	13,3	cyclictest	489147	-21	sh	22:30:00	0
282068	99	16	14,2	cyclictest	281857	-21	kworker/u8:1+events_unbound	20:26:30	3
282068	99	16	14,1	cyclictest	0	-21	swapper/3	00:00:01	3
282068	99	16	13,2	cyclictest	587647	-21	kworker/u8:1+events_unbound	00:17:58	3
282068	99	16	13,2	cyclictest	571725	-21	kworker/u8:0+flush-259:0	00:03:12	3
282068	99	16	13,2	cyclictest	499668	-21	kworker/u8:4+events_unbound	23:00:58	3
282065	99	16	13,2	cyclictest	411537	-21	kworker/u8:2+flush-259:0	22:35:15	2
282065	99	16	13,2	cyclictest	313734	-21	fschecks_count	19:40:15	2
282065	99	16	13,2	cyclictest	0	-21	swapper/2	22:50:00	2
282061	99	16	7,8	cyclictest	510255	-21	fschecks_time	22:50:14	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2021-09-01 - 00:34