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 Wed Jun 24, 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
1494573	99	41	36,4	cyclictest	335557	-21	systemd-journal	00:20:20	0
1494573	99	40	34,5	cyclictest	1713032	-21	latency_hist	22:40:00	0
1494580	99	39	34,4	cyclictest	1645425	-21	base64	21:35:01	2
1494573	99	37	31,4	cyclictest	509	-21	rs:main		0
1494577	99	36	32,3	cyclictest	1800860	-21	/usr/sbin/munin	00:05:18	1
1494582	99	35	31,3	cyclictest	1510144	-21	gpgv	19:25:00	3
1494577	99	34	31,2	cyclictest	1656013	-21	kworker/u8:2+flush-259:0	22:10:00	1
1494577	99	33	28,3	cyclictest	1593913	-21	apt-get	20:45:12	1
1494582	99	32	26,4	cyclictest	1743877	-21	latency_hist	23:10:02	3
1494582	99	32	25,4	cyclictest	1630072	-21	/usr/sbin/munin	21:20:15	3
1494577	99	32	27,3	cyclictest	1609152	-21	kworker/u8:0+flush-259:0	21:15:18	1
1494573	99	32	27,4	cyclictest	1671720	-21	apt-get	22:00:12	0
1494573	99	32	26,5	cyclictest	1753222	-21	sshd	23:15:20	0
1494582	99	30	24,5	cyclictest	335557	-21	systemd-journal	19:20:01	3
1494577	99	30	26,3	cyclictest	1656013	-21	kworker/u8:2+flush-259:0	22:50:17	1
1494577	99	30	24,5	cyclictest	335557	-21	systemd-journal	21:33:47	1
1494573	99	30	26,3	cyclictest	1505102	-21	kworker/u8:3+flush-259:0	20:50:18	0
1494577	99	29	25,3	cyclictest	1656013	-21	kworker/u8:2+flush-259:0	22:20:00	1
1494577	99	29	23,4	cyclictest	1764721	-21	apt-get	23:30:10	1
1494577	99	29	23,4	cyclictest	1530178	-21	ntpq	19:40:20	1
1494577	99	29	22,5	cyclictest	1583024	-21	cat	20:35:01	1
1494573	99	29	26,2	cyclictest	1759528	-21	kworker/u8:2+flush-259:0	23:30:01	0
1494573	99	29	26,2	cyclictest	1526170	-21	kworker/u8:4+flush-259:0	20:30:17	0
1494573	99	29	25,3	cyclictest	1494747	-21	kworker/u8:0+events_unbound	19:30:22	0
1494573	99	29	22,5	cyclictest	1702552	-21	/usr/sbin/munin	22:30:17	0
1494573	99	29	22,5	cyclictest	1702552	-21	/usr/sbin/munin	22:30:17	0
1494580	99	28	24,3	cyclictest	2570132	-21	kworker/u8:2+flush-259:0	19:20:01	2
1494580	99	28	24,3	cyclictest	1733630	-21	kworker/u8:3+events_unbound	00:40:00	2
1494577	99	28	22,4	cyclictest	1614349	-21	latency_hist	21:05:01	1
1494577	99	28	21,4	cyclictest	1634969	-21	latency_hist	21:25:01	1
1494573	99	28	23,4	cyclictest	1795085	-21	kworker/u8:1+events_unbound	00:06:22	0
1494573	99	28	23,4	cyclictest	1489394	-21	kworker/u8:3+events_unbound	19:10:01	0
1494573	99	28	22,5	cyclictest	1650039	-21	ntpq	21:35:27	0
1494580	99	27	24,2	cyclictest	1505102	-21	kworker/u8:3+flush-259:0	20:25:13	2
1494580	99	27	23,3	cyclictest	509	-21	rs:main		2
1494580	99	27	1,24	cyclictest	1	-21	systemd	22:26:52	2
1494577	99	27	23,3	cyclictest	1526170	-21	kworker/u8:4+flush-259:0	21:30:01	1
1494577	99	27	22,3	cyclictest	1759562	-21	apt-get	23:25:11	1
1494577	99	27	21,4	cyclictest	335557	-21	systemd-journal	20:10:00	1
1494582	99	26	23,2	cyclictest	1541735	-21	apt-get	19:55:11	3
1494573	99	26	22,3	cyclictest	1733630	-21	kworker/u8:3+events_unbound	00:25:23	0
1494573	99	26	22,3	cyclictest	1505102	-21	kworker/u8:3+flush-259:0	21:45:25	0
1494573	99	26	21,3	cyclictest	1656013	-21	kworker/u8:2+flush-259:0	23:11:20	0
1494580	99	25	22,2	cyclictest	1655994	-21	kworker/u8:0+flush-259:0	21:45:01	2
1494580	99	25	20,3	cyclictest	1785365	-21	/usr/sbin/munin	23:50:14	2
1494577	99	25	20,3	cyclictest	335557	-21	systemd-journal	20:40:33	1
1494577	99	25	19,5	cyclictest	335557	-21	systemd-journal	23:55:00	1
1494573	99	25	21,2	cyclictest	0	-21	swapper/0	23:45:01	0
1494573	99	25	20,3	cyclictest	1655994	-21	kworker/u8:0+events_unbound	22:10:13	0
1494580	99	24	20,3	cyclictest	1733630	-21	kworker/u8:3+flush-259:0	00:20:26	2
1494580	99	24	18,5	cyclictest	1739007	-21	apt-get	23:05:11	2
1494573	99	24	20,3	cyclictest	2570132	-21	kworker/u8:2+flush-259:0	19:10:24	0
1494573	99	24	20,3	cyclictest	1759528	-21	kworker/u8:2+events_unbound	23:37:20	0
1494573	99	24	20,3	cyclictest	1526170	-21	kworker/u8:4+events_unbound	19:50:23	0
1494582	99	23	16,5	cyclictest	1696321	-21	ntpq	22:20:22	3
1494580	99	23	18,4	cyclictest	1821262	-21	kworker/u8:0+flush-259:0	00:30:25	2
1494580	99	23	18,3	cyclictest	1484055	-21	kworker/u8:1+events_unbound	19:20:17	2
1494577	99	23	19,3	cyclictest	1744147	-21	apt-get	23:10:12	1
1494577	99	23	17,4	cyclictest	335557	-21	systemd-journal	20:55:42	1
1494573	99	23	17,4	cyclictest	1504874	-21	latency_hist	19:20:00	0
1494582	99	22	18,3	cyclictest	1526170	-21	kworker/u8:4+flush-259:0	20:00:34	3
1494582	99	22	16,4	cyclictest	1774805	-21	latency_hist	23:40:01	3
1494580	99	22	18,3	cyclictest	1655994	-21	kworker/u8:0+flush-259:0	22:05:00	2
1494580	99	22	17,4	cyclictest	1505102	-21	kworker/u8:3+flush-259:0	21:20:21	2
1494580	99	22	16,4	cyclictest	335557	-21	systemd-journal	00:17:00	2
1494577	99	22	15,5	cyclictest	1550931	-21	ntpq	20:00:29	1
1494573	99	22	19,2	cyclictest	1723346	-21	kworker/u8:0+flush-259:0	23:00:22	0
1494573	99	22	18,3	cyclictest	1733630	-21	kworker/u8:3+flush-259:0	23:20:16	0
1494573	99	22	18,3	cyclictest	1656013	-21	kworker/u8:2+events_unbound	22:45:15	0
1494573	99	22	18,3	cyclictest	1656013	-21	kworker/u8:2+events_unbound	22:45:15	0
1494573	99	22	17,4	cyclictest	1733630	-21	kworker/u8:3+flush-259:0	23:35:00	0
1494573	99	22	16,4	cyclictest	1588714	-21	apt-get	20:40:11	0
1494573	99	22	15,5	cyclictest	335557	-21	systemd-journal	23:07:20	0
1494580	99	21	18,2	cyclictest	1733630	-21	kworker/u8:3+flush-259:0	00:10:21	2
1494580	99	21	17,3	cyclictest	1718429	-21	/usr/sbin/munin	22:45:22	2
1494580	99	21	17,3	cyclictest	1718429	-21	/usr/sbin/munin	22:45:22	2
1494580	99	21	17,3	cyclictest	1551830	-21	kworker/u8:0+flush-259:0	20:10:17	2
1494573	99	21	18,2	cyclictest	1494747	-21	kworker/u8:0+events_unbound	19:35:17	0
1494573	99	21	15,4	cyclictest	1556103	-21	ntpq	20:05:20	0
1494573	99	21	14,5	cyclictest	1799754	-21	ntpq	00:00:23	0
1494582	99	20	17,2	cyclictest	1733630	-21	kworker/u8:3+flush-259:0	23:25:00	3
1494582	99	20	16,3	cyclictest	1795085	-21	kworker/u8:1+flush-259:0	00:15:22	3
1494582	99	20	15,4	cyclictest	1645961	-21	apt-get	21:35:13	3
1494582	99	20	15,4	cyclictest	1505102	-21	kworker/u8:3+flush-259:0	21:04:59	3
1494582	99	20	15,3	cyclictest	1656398	-21	diskstats	21:45:15	3
1494580	99	20	16,3	cyclictest	1541188	-21	sshd	19:51:38	2
1494580	99	20	16,3	cyclictest	1505102	-21	kworker/u8:3+flush-259:0	19:25:26	2
1494580	99	20	14,4	cyclictest	1618663	-21	ntpq	21:05:22	2
1494577	99	20	16,2	cyclictest	1526170	-21	kworker/u8:4+flush-259:0	21:10:20	1
1494577	99	20	13,5	cyclictest	335557	-21	systemd-journal	20:20:30	1
1494573	99	20	17,2	cyclictest	1526170	-21	kworker/u8:4+events_unbound	20:55:17	0
1494573	99	20	16,3	cyclictest	1821262	-21	kworker/u8:0+events_unbound	00:37:24	0
1494573	99	20	16,3	cyclictest	1733630	-21	kworker/u8:3+events_unbound	00:11:22	0
1494573	99	20	16,3	cyclictest	1723346	-21	kworker/u8:0+events_unbound	22:59:18	0
1494573	99	20	16,3	cyclictest	1505102	-21	kworker/u8:3+events_unbound	20:25:24	0
1494573	99	20	14,4	cyclictest	335557	-21	systemd-journal	21:24:42	0
1494573	99	20	0,19	cyclictest	1666299	-21	turbostat	21:55:00	0
1494582	99	19	16,2	cyclictest	509	-21	rs:main		3
1494582	99	19	16,2	cyclictest	1837208	-21	gpgconf	00:40:00	3
1494582	99	19	15,3	cyclictest	1826669	-21	apt-get	00:30:12	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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