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 Fri Sep 04, 2026 00:44:06)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
476941	99	52	48,3	cyclictest	637893	-21	kworker/u8:2+flush-259:0	22:25:25	0
476941	99	44	39,3	cyclictest	586209	-21	base64	20:55:01	0
476948	99	41	36,3	cyclictest	596833	-21	apt-get	21:05:11	1
476941	99	35	31,3	cyclictest	751932	-21	kworker/u8:2+flush-259:0	00:05:00	0
476941	99	35	31,3	cyclictest	751932	-21	kworker/u8:2+flush-259:0	00:05:00	0
476941	99	35	31,3	cyclictest	627585	-21	kworker/u8:1+flush-259:0	21:55:23	0
476941	99	35	31,3	cyclictest	565175	-21	kworker/u8:0+events_unbound	21:04:27	0
476941	99	35	31,3	cyclictest	2630397	-21	kworker/u8:2+flush-259:0	20:15:24	0
476941	99	34	28,4	cyclictest	751932	-21	kworker/u8:2+flush-259:0	23:55:20	0
476941	99	34	28,4	cyclictest	751932	-21	kworker/u8:2+flush-259:0	23:55:19	0
476941	99	34	27,5	cyclictest	519042	-21	diskstats	19:50:15	0
476955	99	33	28,3	cyclictest	695187	-21	kworker/u8:3+flush-259:0	23:40:00	3
476941	99	33	29,3	cyclictest	482296	-21	kworker/u8:1+events_unbound	19:35:22	0
476941	99	33	27,4	cyclictest	622703	-21	apt-get	21:30:16	0
476955	99	32	26,4	cyclictest	498153	-21	cat	19:30:01	3
476951	99	32	27,3	cyclictest	586408	-21	base64	20:55:01	2
476941	99	32	26,4	cyclictest	335557	-21	systemd-journal	23:55:00	0
476955	99	31	26,3	cyclictest	731311	-21	latency_hist	23:15:00	3
476948	99	31	27,3	cyclictest	751932	-21	kworker/u8:2+flush-259:0	23:45:00	1
476941	99	31	28,2	cyclictest	627585	-21	kworker/u8:1+events_unbound	21:40:20	0
476941	99	30	27,2	cyclictest	482296	-21	kworker/u8:1+events_unbound	19:15:15	0
476955	99	29	21,6	cyclictest	335557	-21	systemd-journal	23:29:59	3
476951	99	29	24,3	cyclictest	601989	-21	/usr/sbin/munin	21:10:25	2
476948	99	29	25,3	cyclictest	695187	-21	kworker/u8:3+flush-259:0	23:20:24	1
476948	99	29	23,4	cyclictest	674534	-21	kworker/u8:1+flush-259:0	00:25:16	1
476941	99	29	26,2	cyclictest	695187	-21	kworker/u8:3+flush-259:0	23:30:00	0
476941	99	29	23,4	cyclictest	335557	-21	systemd-journal	23:24:33	0
476948	99	28	23,4	cyclictest	539576	-21	apt-get	20:10:11	1
476948	99	28	21,5	cyclictest	705743	-21	apt-get	22:50:16	1
476941	99	28	25,2	cyclictest	637893	-21	kworker/u8:2+flush-259:0	22:45:00	0
476941	99	28	22,4	cyclictest	335557	-21	systemd-journal	19:55:01	0
476955	99	27	23,3	cyclictest	2630397	-21	kworker/u8:2+flush-259:0	19:25:17	3
476948	99	27	24,2	cyclictest	507920	-21	kworker/u8:3+flush-259:0	20:30:15	1
476941	99	27	24,2	cyclictest	648476	-21	kworker/u8:0+flush-259:0	22:10:24	0
476955	99	26	23,2	cyclictest	627585	-21	kworker/u8:1+flush-259:0	21:55:26	3
476955	99	26	20,5	cyclictest	788705	-21	cat	00:10:00	3
476951	99	26	20,4	cyclictest	509	-21	rs:main		2
476941	99	26	23,2	cyclictest	674534	-21	kworker/u8:1+events_unbound	23:00:23	0
476941	99	26	23,2	cyclictest	648476	-21	kworker/u8:0+events_unbound	22:00:21	0
476941	99	26	22,3	cyclictest	674534	-21	kworker/u8:1+events_unbound	00:10:24	0
476941	99	26	22,3	cyclictest	648476	-21	kworker/u8:0+events_unbound	22:05:24	0
476941	99	25	22,2	cyclictest	2630397	-21	kworker/u8:2+flush-259:0	20:40:22	0
476941	99	25	20,2	cyclictest	637893	-21	kworker/u8:2+events_unbound	22:50:29	0
476955	99	24	21,2	cyclictest	2630397	-21	kworker/u8:2+events_unbound	20:15:17	3
476955	99	24	20,3	cyclictest	507920	-21	kworker/u8:3+flush-259:0	20:25:25	3
476951	99	24	6,7	cyclictest	0	-21	swapper/2	23:35:16	2
476951	99	24	18,4	cyclictest	601755	-21	latency_hist	21:10:00	2
476948	99	24	20,3	cyclictest	2630397	-21	kworker/u8:2+flush-259:0	20:05:00	1
476941	99	24	21,2	cyclictest	674534	-21	kworker/u8:1+events_unbound	23:35:22	0
476941	99	24	21,2	cyclictest	507920	-21	kworker/u8:3+flush-259:0	20:30:23	0
476941	99	24	21,2	cyclictest	507920	-21	kworker/u8:3+events_unbound	19:45:15	0
476941	99	24	20,3	cyclictest	2630397	-21	kworker/u8:2+flush-259:0	20:35:14	0
476955	99	23	19,3	cyclictest	772830	-21	/usr/sbin/munin	23:55:16	3
476955	99	23	19,3	cyclictest	772830	-21	/usr/sbin/munin	23:55:15	3
476955	99	23	18,3	cyclictest	335557	-21	systemd-journal	22:34:55	3
476955	99	23	15,7	cyclictest	674534	-21	kworker/u8:1+flush-259:0	23:03:41	3
476951	99	23	20,2	cyclictest	591701	-21	apt-get	21:00:13	2
476951	99	23	18,3	cyclictest	586289	-21	latency_hist	20:55:01	2
476948	99	23	20,2	cyclictest	507	-21	in:imuxsock	22:40:00	1
476948	99	23	19,2	cyclictest	335557	-21	systemd-journal	22:28:00	1
476941	99	23	20,2	cyclictest	2630397	-21	kworker/u8:2+flush-259:0	21:10:15	0
476941	99	23	19,3	cyclictest	2630397	-21	kworker/u8:2+events_unbound	19:10:17	0
476941	99	23	18,4	cyclictest	335557	-21	systemd-journal	21:19:59	0
476941	99	23	17,4	cyclictest	631870	-21	ntpq	21:35:22	0
476951	99	22	15,6	cyclictest	1	-21	systemd	20:50:00	2
476948	99	22	17,3	cyclictest	814784	-21	apt-get	00:35:12	1
476948	99	22	16,4	cyclictest	508574	-21	apt-get	19:40:12	1
476941	99	22	19,2	cyclictest	674534	-21	kworker/u8:1+events_unbound	22:45:17	0
476955	99	21	18,2	cyclictest	819677	-21	munin-plugin-st	00:40:01	3
476955	99	21	16,3	cyclictest	617525	-21	apt-get	21:25:13	3
476951	99	21	1,18	cyclictest	643080	-21	awk	21:50:00	2
476951	99	21	0,9	cyclictest	792595	2	cut	00:10:18	2
476951	99	21	0,12	cyclictest	622192	-21	taskset	21:27:18	2
476948	99	21	18,2	cyclictest	607188	-21	apt-get	21:15:11	1
476948	99	21	17,3	cyclictest	793730	-21	cron	00:15:00	1
476941	99	21	18,2	cyclictest	762272	-21	kworker/u8:4+events_unbound	00:28:02	0
476941	99	21	18,2	cyclictest	482296	-21	kworker/u8:1+events_unbound	19:35:00	0
476941	99	21	18,2	cyclictest	2630397	-21	kworker/u8:2+flush-259:0	19:20:25	0
476941	99	21	17,3	cyclictest	2630397	-21	kworker/u8:2+events_unbound	20:09:35	0
476955	99	20	15,3	cyclictest	565175	-21	kworker/u8:0+flush-259:0	20:45:19	3
476948	99	20	16,3	cyclictest	674534	-21	kworker/u8:1+flush-259:0	23:20:00	1
476948	99	20	13,5	cyclictest	606029	-21	ntpq	21:10:23	1
476948	99	20	13,5	cyclictest	509	-21	rs:main		1
476941	99	20	17,2	cyclictest	674534	-21	kworker/u8:1+events_unbound	23:15:16	0
476941	99	20	17,2	cyclictest	637893	-21	kworker/u8:2+flush-259:0	21:50:27	0
476941	99	20	16,3	cyclictest	751932	-21	kworker/u8:2+events_unbound	23:45:11	0
476955	99	19	16,2	cyclictest	596506	-21	kworker/u8:3+flush-259:0	21:45:15	3
476955	99	19	15,3	cyclictest	674534	-21	kworker/u8:1+flush-259:0	22:40:01	3
476951	99	19	4,6	cyclictest	575559	-21	apt	20:45:00	2
476948	99	19	14,4	cyclictest	335557	-21	systemd-journal	22:50:01	1
476948	99	19	14,3	cyclictest	482328	-21	apt-get	19:15:10	1
476948	99	19	14,3	cyclictest	2630397	-21	kworker/u8:2+flush-259:0	19:25:05	1
476948	99	19	13,5	cyclictest	335557	-21	systemd-journal	21:00:01	1
476941	99	19	16,2	cyclictest	762272	-21	kworker/u8:4+events_unbound	00:08:16	0
476941	99	19	16,2	cyclictest	674534	-21	kworker/u8:1+flush-259:0	23:10:27	0
476941	99	19	16,2	cyclictest	471837	-21	kworker/u8:0+events_unbound	19:43:34	0
476941	99	19	15,3	cyclictest	674534	-21	kworker/u8:1+events_unbound	22:39:58	0
476955	99	18	15,2	cyclictest	762272	-21	kworker/u8:4+events_unbound	00:30:19	3
476955	99	18	15,2	cyclictest	633426	-21	irqcore	21:40:19	3
476955	99	18	14,3	cyclictest	695187	-21	kworker/u8:3+flush-259:0	23:05:14	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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