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 Feb 04, 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
1570605	99	56	53,2	cyclictest	1586046	-21	kworker/u8:0+events_unbound	19:25:13	3
1570605	99	53	50,2	cyclictest	75	-21	kswapd0	22:19:23	3
1570605	99	50	47,2	cyclictest	1541670	-21	kworker/u8:4+events_unbound	20:00:23	3
1570605	99	49	46,2	cyclictest	1541670	-21	kworker/u8:4+flush-259:0	20:15:22	3
1570600	99	46	43,2	cyclictest	75	-21	kswapd0	22:19:23	1
1570605	99	45	42,2	cyclictest	1659348	-21	kworker/u8:1+events_unbound	21:35:15	3
1570605	99	45	42,2	cyclictest	1586046	-21	kworker/u8:0+events_unbound	20:20:24	3
1570596	99	45	40,4	cyclictest	1742074	-21	apt-get	21:55:11	0
1570605	99	43	40,2	cyclictest	1541670	-21	kworker/u8:4+events_unbound	19:50:20	3
1570605	99	42	37,3	cyclictest	1659348	-21	kworker/u8:1+events_unbound	21:45:17	3
1570605	99	41	38,2	cyclictest	1762449	-21	kworker/u8:4+events_unbound	22:35:24	3
1570605	99	41	38,2	cyclictest	1541670	-21	kworker/u8:4+events_unbound	20:25:29	3
1570604	99	41	37,3	cyclictest	1659348	-21	kworker/u8:1+flush-259:0	20:35:16	2
1570605	99	40	37,2	cyclictest	1690247	-21	kworker/u8:2+flush-259:0	21:15:20	3
1570605	99	40	36,3	cyclictest	1541670	-21	kworker/u8:4+events_unbound	19:30:13	3
1570596	99	40	35,3	cyclictest	1902956	-21	latency_hist	00:30:01	0
1570605	99	39	36,2	cyclictest	1741835	-21	kworker/u8:2+flush-259:0	21:55:20	3
1570605	99	39	36,2	cyclictest	1586046	-21	kworker/u8:0+events_unbound	19:35:25	3
1570605	99	39	35,3	cyclictest	1756671	-21	kworker/u8:0+events_unbound	22:20:25	3
1570605	99	39	35,2	cyclictest	1659348	-21	kworker/u8:1+events_unbound	21:30:20	3
1570605	99	39	34,3	cyclictest	1897837	-21	kworker/u8:2+events_unbound	00:25:22	3
1570605	99	38	35,2	cyclictest	1773270	-21	kworker/u8:2+events_unbound	22:30:23	3
1570605	99	38	35,2	cyclictest	1586046	-21	kworker/u8:0+flush-259:0	20:10:26	3
1570605	99	38	34,3	cyclictest	1541670	-21	kworker/u8:4+flush-259:0	19:15:22	3
1570604	99	37	33,3	cyclictest	1537865	-21	kworker/u8:1+events_unbound	19:10:20	2
1570605	99	36	33,2	cyclictest	1586046	-21	kworker/u8:0+events_unbound	19:45:22	3
1570605	99	36	31,3	cyclictest	1840428	-21	kworker/u8:0+flush-259:0	23:50:20	3
1570605	99	36	31,3	cyclictest	1741835	-21	kworker/u8:2+events_unbound	22:05:19	3
1570605	99	36	30,2	cyclictest	1789463	-21	kworker/u8:1+events_unbound	22:40:21	3
1570605	99	35	32,2	cyclictest	1756671	-21	kworker/u8:0+events_unbound	23:10:22	3
1570605	99	35	31,3	cyclictest	1789463	-21	kworker/u8:1+events_unbound	22:45:24	3
1570600	99	35	30,3	cyclictest	1773461	-21	/usr/sbin/munin	22:25:14	1
1570596	99	35	31,3	cyclictest	1541670	-21	kworker/u8:4+events_unbound	20:05:24	0
1570605	99	34	31,2	cyclictest	1541670	-21	kworker/u8:4+events_unbound	19:20:24	3
1570605	99	34	30,3	cyclictest	1726511	-21	kworker/u8:3+flush-259:0	21:50:22	3
1570596	99	34	31,2	cyclictest	1586046	-21	kworker/u8:0+events_unbound	20:15:15	0
1570605	99	33	30,2	cyclictest	1726511	-21	kworker/u8:3+events_unbound	21:40:16	3
1570605	99	33	27,2	cyclictest	1840428	-21	kworker/u8:0+events_unbound	23:40:14	3
1570604	99	33	28,4	cyclictest	1756671	-21	kworker/u8:0+events_unbound	22:19:22	2
1570596	99	33	27,5	cyclictest	1860274	-21	ntpq	23:45:21	0
1570605	99	32	29,2	cyclictest	1541670	-21	kworker/u8:4+flush-259:0	19:10:30	3
1570604	99	32	29,2	cyclictest	1586046	-21	kworker/u8:0+events_unbound	19:35:19	2
1570604	99	32	28,3	cyclictest	1659348	-21	kworker/u8:1+events_unbound	21:20:14	2
1570604	99	32	26,4	cyclictest	1746984	-21	latency_hist	22:00:00	2
1570600	99	32	28,3	cyclictest	1741835	-21	kworker/u8:2+events_unbound	22:05:22	1
1570600	99	32	27,4	cyclictest	1633276	-21	gpgv	20:10:01	1
1570605	99	31	28,2	cyclictest	1887102	-21	kworker/u8:3+flush-259:0	00:15:23	3
1570605	99	31	28,2	cyclictest	1659348	-21	kworker/u8:1+events_unbound	20:55:27	3
1570604	99	31	27,3	cyclictest	252	-21	systemd-journal	20:47:35	2
1570600	99	31	25,4	cyclictest	1695677	-21	apt-get	21:10:12	1
1570605	99	30	27,2	cyclictest	1887102	-21	kworker/u8:3+events_unbound	00:30:34	3
1570605	99	30	27,2	cyclictest	1809461	-21	kworker/u8:2+flush-259:0	23:25:19	3
1570605	99	30	27,2	cyclictest	1756671	-21	kworker/u8:0+flush-259:0	22:50:16	3
1570605	99	30	26,3	cyclictest	1756671	-21	kworker/u8:0+flush-259:0	22:10:33	3
1570600	99	30	23,5	cyclictest	252	-21	systemd-journal	00:25:01	1
1570596	99	30	0,28	cyclictest	1	-21	systemd	20:47:34	0
1570605	99	29	26,2	cyclictest	1830123	-21	kworker/u8:3+events_unbound	23:30:08	3
1570605	99	29	26,2	cyclictest	1659348	-21	kworker/u8:1+flush-259:0	20:40:20	3
1570605	99	29	25,3	cyclictest	1659348	-21	kworker/u8:1+flush-259:0	20:51:36	3
1570604	99	29	25,3	cyclictest	1541670	-21	kworker/u8:4+flush-259:0	19:25:21	2
1570600	99	29	21,5	cyclictest	1664516	-21	latency_hist	20:40:00	1
1570605	99	28	25,2	cyclictest	1840428	-21	kworker/u8:0+flush-259:0	00:20:35	3
1570605	99	28	22,4	cyclictest	1861121	-21	latency_hist	23:50:01	3
1570604	99	28	25,2	cyclictest	1756671	-21	kworker/u8:0+flush-259:0	22:25:22	2
1570604	99	28	25,2	cyclictest	1586046	-21	kworker/u8:0+flush-259:0	20:20:21	2
1570604	99	28	22,4	cyclictest	1638937	-21	/usr/sbin/munin	20:15:23	2
1570600	99	28	22,4	cyclictest	1731704	-21	apt-get	21:45:11	1
1570600	99	28	21,5	cyclictest	1622426	-21	latency_hist	20:00:01	1
1570600	99	28	21,5	cyclictest	1601024	-21	ntpq	19:35:24	1
1570600	99	28	21,4	cyclictest	1835287	-21	latency_hist	23:25:01	1
1570596	99	28	25,2	cyclictest	1586572	-21	gpgv	19:25:01	0
1570596	99	28	25,2	cyclictest	1541670	-21	kworker/u8:4+flush-259:0	19:50:16	0
1570605	99	27	24,2	cyclictest	1756671	-21	kworker/u8:0+flush-259:0	22:25:15	3
1570605	99	27	23,3	cyclictest	1690247	-21	kworker/u8:2+events_unbound	21:10:35	3
1570604	99	27	24,2	cyclictest	1659348	-21	kworker/u8:1+flush-259:0	20:50:20	2
1570604	99	27	23,3	cyclictest	1649232	-21	kworker/u8:2+flush-259:0	20:30:16	2
1570604	99	27	22,4	cyclictest	1809686	-21	apt-get	23:00:11	2
1570600	99	27	21,4	cyclictest	1866957	-21	apt-get	23:55:12	1
1570596	99	27	23,3	cyclictest	1659348	-21	kworker/u8:1+events_unbound	20:40:23	0
1570596	99	27	23,2	cyclictest	1882580	-21	apt-get	00:10:10	0
1570605	99	26	23,2	cyclictest	1741835	-21	kworker/u8:2+events_unbound	22:00:21	3
1570605	99	26	22,3	cyclictest	1659348	-21	kworker/u8:1+events_unbound	20:36:07	3
1570605	99	26	22,3	cyclictest	1586046	-21	kworker/u8:0+events_unbound	20:05:04	3
1570604	99	26	23,2	cyclictest	1897837	-21	kworker/u8:2+flush-259:0	00:30:16	2
1570604	99	26	23,2	cyclictest	1541670	-21	kworker/u8:4+flush-259:0	19:30:17	2
1570604	99	26	23,2	cyclictest	1541670	-21	kworker/u8:4+flush-259:0	19:20:18	2
1570604	99	26	22,3	cyclictest	1830123	-21	kworker/u8:3+flush-259:0	23:30:25	2
1570604	99	26	22,3	cyclictest	1789463	-21	kworker/u8:1+flush-259:0	22:56:35	2
1570604	99	26	21,4	cyclictest	252	-21	systemd-journal	20:28:34	2
1570604	99	26	18,3	cyclictest	1586046	-21	kworker/u8:0+flush-259:0	20:10:01	2
1570600	99	26	20,4	cyclictest	252	-21	systemd-journal	00:34:02	1
1570596	99	26	23,2	cyclictest	1741835	-21	kworker/u8:2+flush-259:0	22:05:15	0
1570596	99	26	23,2	cyclictest	1659348	-21	kworker/u8:1+flush-259:0	21:30:21	0
1570596	99	26	23,2	cyclictest	1586046	-21	kworker/u8:0+flush-259:0	19:55:21	0
1570604	99	25	22,2	cyclictest	1726511	-21	kworker/u8:3+flush-259:0	21:50:16	2
1570604	99	25	22,2	cyclictest	1659348	-21	kworker/u8:1+events_unbound	21:30:22	2
1570604	99	25	22,2	cyclictest	1541670	-21	kworker/u8:4+flush-259:0	20:10:19	2
1570604	99	25	22,2	cyclictest	1541670	-21	kworker/u8:4+events_unbound	19:55:02	2
1570600	99	25	21,3	cyclictest	1762417	-21	apt-get	22:15:01	1
1570600	99	25	21,3	cyclictest	1705978	-21	apt-get	21:20:11	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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