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 Aug 17, 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
1613345	99	54	38,10	cyclictest	1774286	-21	/usr/sbin/munin	21:45:22	0
1613345	99	51	38,10	cyclictest	1946052	-21	latency_hist	00:30:01	0
1613351	99	46	40,4	cyclictest	1904201	-21	latency_hist	23:50:01	2
1613345	99	45	40,3	cyclictest	1758874	-21	apt-get	21:30:13	0
1613355	99	44	40,3	cyclictest	1768937	-21	kworker/u8:0+flush-259:0	22:40:00	3
1613345	99	44	39,3	cyclictest	1707169	-21	apt-get	20:40:13	0
1613345	99	44	38,4	cyclictest	1774048	-21	latency_hist	21:45:01	0
1613351	99	42	36,4	cyclictest	335557	-21	systemd-journal	20:10:00	2
1613349	99	39	25,5	cyclictest	1815824	-21	latency_hist	22:25:00	1
1613355	99	38	35,2	cyclictest	1904894	-21	apt-get	23:50:13	3
1613351	99	38	33,4	cyclictest	1768937	-21	kworker/u8:0+events_unbound	23:39:19	2
1613349	99	37	31,4	cyclictest	1784592	-21	/usr/sbin/munin	21:55:14	1
1613349	99	37	22,4	cyclictest	335557	-21	systemd-journal	00:05:00	1
1613355	99	35	29,4	cyclictest	1757773	-21	ntpq	21:25:25	3
1613345	99	35	30,3	cyclictest	1691609	-21	apt-get	20:25:13	0
1613345	99	35	29,4	cyclictest	1665059	-21	latency_hist	20:00:01	0
1613349	99	34	31,2	cyclictest	1836508	-21	kworker/u8:1+events_unbound	22:50:19	1
1613349	99	34	27,5	cyclictest	1945156	-21	ntpq	00:25:23	1
1613355	99	33	26,5	cyclictest	335557	-21	systemd-journal	23:00:00	3
1613351	99	32	28,3	cyclictest	1369598	-21	kworker/u8:3+flush-259:0	19:10:37	2
1613349	99	32	27,3	cyclictest	1743304	-21	/usr/sbin/munin	21:15:19	1
1613351	99	31	27,3	cyclictest	1857879	-21	kworker/u8:4+events_unbound	23:30:24	2
1613351	99	31	26,4	cyclictest	1857879	-21	kworker/u8:4+events_unbound	00:35:24	2
1613351	99	31	26,4	cyclictest	1712060	-21	kworker/u8:2+flush-259:0	21:50:15	2
1613349	99	31	28,2	cyclictest	1768937	-21	kworker/u8:0+flush-259:0	23:35:00	1
1613345	99	31	26,4	cyclictest	335557	-21	systemd-journal	21:30:01	0
1613345	99	30	23,5	cyclictest	1955611	-21	ntpq	00:35:23	0
1613355	99	29	23,4	cyclictest	1686616	-21	diskstats	20:20:15	3
1613351	99	29	25,3	cyclictest	1888714	-21	kworker/u8:1+flush-259:0	23:57:30	2
1613351	99	29	24,4	cyclictest	1670390	-21	store	20:05:01	2
1613355	99	28	25,2	cyclictest	1738095	-21	kworker/u8:4+flush-259:0	21:35:16	3
1613355	99	28	24,3	cyclictest	1768937	-21	kworker/u8:0+flush-259:0	22:05:01	3
1613355	99	28	24,3	cyclictest	1717475	-21	/usr/sbin/munin	20:50:14	3
1613351	99	28	24,3	cyclictest	1826186	-21	kworker/u8:3+events_unbound	23:02:28	2
1613345	99	28	25,2	cyclictest	1369598	-21	kworker/u8:3+flush-259:0	19:45:26	0
1613345	99	28	22,4	cyclictest	335557	-21	systemd-journal	23:41:29	0
1613355	99	27	20,5	cyclictest	1873631	-21	diskstats	23:20:12	3
1613351	99	27	23,3	cyclictest	1857879	-21	kworker/u8:4+events_unbound	00:25:30	2
1613351	99	27	23,3	cyclictest	1768937	-21	kworker/u8:0+events_unbound	22:35:30	2
1613351	99	27	23,3	cyclictest	1738095	-21	kworker/u8:4+flush-259:0	22:05:17	2
1613351	99	27	23,3	cyclictest	1670840	-21	kworker/u8:4+events_unbound	20:16:30	2
1613351	99	27	23,3	cyclictest	1670839	-21	kworker/u8:1+events_unbound	20:25:27	2
1613351	99	27	22,4	cyclictest	1909640	-21	kworker/u8:2+events_unbound	00:04:30	2
1613351	99	27	22,3	cyclictest	1649772	-21	kworker/u8:2+events_unbound	20:20:18	2
1613345	99	27	21,4	cyclictest	1737866	-21	latency_hist	21:10:01	0
1613355	99	26	21,4	cyclictest	1643458	-21	ntpq	19:35:19	3
1613351	99	26	22,3	cyclictest	1712060	-21	kworker/u8:2+events_unbound	21:32:30	2
1613351	99	26	20,4	cyclictest	335557	-21	systemd-journal	21:05:01	2
1613349	99	26	20,4	cyclictest	1670383	-21	gpgv	20:05:02	1
1613355	99	25	21,3	cyclictest	1909640	-21	kworker/u8:2+flush-259:0	23:55:27	3
1613351	99	25	22,2	cyclictest	1738095	-21	kworker/u8:4+flush-259:0	21:45:16	2
1613351	99	25	21,3	cyclictest	1820574	-21	kworker/u8:2+events_unbound	22:31:29	2
1613351	99	25	20,3	cyclictest	1369598	-21	kworker/u8:3+events_unbound	19:25:40	2
1613349	99	25	20,3	cyclictest	1852716	-21	apt-get	23:00:14	1
1613349	99	25	19,4	cyclictest	1956499	-21	latency_hist	00:40:01	1
1613349	99	25	18,5	cyclictest	1633130	-21	ntpq	19:25:22	1
1613349	99	25	16,8	cyclictest	1920206	-21	kworker/u8:3+flush-259:0	00:10:00	1
1613345	99	25	19,4	cyclictest	1951088	-21	apt-get	00:33:20	0
1613355	99	24	21,2	cyclictest	1909640	-21	kworker/u8:2+flush-259:0	00:00:29	3
1613355	99	24	20,3	cyclictest	335557	-21	systemd-journal	22:10:29	3
1613355	99	24	20,3	cyclictest	1836508	-21	kworker/u8:1+flush-259:0	22:50:21	3
1613355	99	24	20,3	cyclictest	1717467	-21	kworker/u8:0+flush-259:0	21:09:59	3
1613351	99	24	20,3	cyclictest	1580019	-21	kworker/u8:2+events_unbound	19:15:16	2
1613349	99	24	20,3	cyclictest	1670840	-21	kworker/u8:4+flush-259:0	20:30:18	1
1613345	99	24	20,3	cyclictest	1768937	-21	kworker/u8:0+flush-259:0	21:55:01	0
1613351	99	23	20,3	cyclictest	1836508	-21	kworker/u8:1+events_unbound	23:05:10	2
1613351	99	23	19,3	cyclictest	1857879	-21	kworker/u8:4+events_unbound	00:20:15	2
1613351	99	23	19,3	cyclictest	1800496	-21	kworker/u8:3+events_unbound	22:19:28	2
1613351	99	23	19,3	cyclictest	1696729	-21	kworker/u8:3+events_unbound	20:35:24	2
1613349	99	23	18,4	cyclictest	1930784	-21	/usr/sbin/munin	00:15:14	1
1613349	99	23	17,4	cyclictest	1878389	-21	latency_hist	23:25:01	1
1613345	99	23	20,2	cyclictest	1670180	-21	apt-get	20:05:01	0
1613355	99	22	19,2	cyclictest	1768937	-21	kworker/u8:0+flush-259:0	22:35:00	3
1613355	99	22	18,3	cyclictest	335557	-21	systemd-journal	23:33:28	3
1613355	99	22	18,3	cyclictest	1857879	-21	kworker/u8:4+flush-259:0	23:35:18	3
1613355	99	22	18,3	cyclictest	1369598	-21	kworker/u8:3+flush-259:0	19:55:01	3
1613351	99	22	19,2	cyclictest	1369598	-21	kworker/u8:3+flush-259:0	19:30:38	2
1613351	99	22	18,3	cyclictest	1857879	-21	kworker/u8:4+events_unbound	00:30:30	2
1613351	99	22	18,3	cyclictest	1836508	-21	kworker/u8:1+events_unbound	23:15:31	2
1613351	99	22	18,3	cyclictest	1820574	-21	kworker/u8:2+events_unbound	22:46:28	2
1613351	99	22	18,3	cyclictest	1768937	-21	kworker/u8:0+events_unbound	22:02:30	2
1613351	99	22	18,3	cyclictest	1717467	-21	kworker/u8:0+events_unbound	20:55:18	2
1613351	99	22	18,3	cyclictest	1670840	-21	kworker/u8:4+events_unbound	20:10:28	2
1613351	99	22	17,3	cyclictest	1842356	-21	/usr/sbin/munin	22:50:15	2
1613351	99	22	15,5	cyclictest	335557	-21	systemd-journal	19:40:01	2
1613349	99	22	19,2	cyclictest	1676074	-21	apt-get	20:10:12	1
1613345	99	22	18,3	cyclictest	509	-21	rs:main		0
1613355	99	21	17,3	cyclictest	1857879	-21	kworker/u8:4+flush-259:0	00:25:00	3
1613355	99	21	17,3	cyclictest	1580019	-21	kworker/u8:2+flush-259:0	19:15:23	3
1613351	99	21	18,2	cyclictest	1670840	-21	kworker/u8:4+flush-259:0	20:30:16	2
1613351	99	21	17,3	cyclictest	1909640	-21	kworker/u8:2+events_unbound	23:53:29	2
1613351	99	21	17,3	cyclictest	1670839	-21	kworker/u8:1+events_unbound	20:44:28	2
1613351	99	21	17,3	cyclictest	1623349	-21	kworker/u8:0+events_unbound	19:50:27	2
1613351	99	21	16,4	cyclictest	1915036	-21	kworker/u8:0+events_unbound	00:10:12	2
1613351	99	21	16,3	cyclictest	1654698	-21	latency_hist	19:50:01	2
1613351	99	21	14,5	cyclictest	335557	-21	systemd-journal	22:55:29	2
1613351	99	21	14,5	cyclictest	335557	-21	systemd-journal	21:20:01	2
1613349	99	21	16,4	cyclictest	1878650	-21	apt-get	23:25:16	1
1613345	99	21	16,4	cyclictest	1847538	-21	apt-get	22:55:14	0
1613345	99	21	15,4	cyclictest	335557	-21	systemd-journal	19:35:01	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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