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
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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 Aug 29, 2025 00:44:06)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1853483	99	36	32,3	cyclictest	1947342	-21	latency_hist	20:39:59	3
1853473	99	33	27,4	cyclictest	1942201	-21	latency_hist	20:35:01	0
1853483	99	30	27,2	cyclictest	2107245	-21	kworker/u8:0+events_unbound	23:30:17	3
1853483	99	29	24,2	cyclictest	2070966	-21	kworker/u8:2+events_unbound	23:15:22	3
1853479	99	29	24,2	cyclictest	1973139	-21	kworker/u8:1+flush-259:0	21:30:00	2
1853479	99	29	24,2	cyclictest	1973139	-21	kworker/u8:1+flush-259:0	21:30:00	2
1853483	99	28	25,2	cyclictest	2008791	-21	kworker/u8:0+events_unbound	22:00:24	3
1853479	99	28	25,2	cyclictest	2107245	-21	kworker/u8:0+flush-259:0	23:40:00	2
1853479	99	28	24,3	cyclictest	2008791	-21	kworker/u8:0+events_unbound	22:45:16	2
1853483	99	27	24,2	cyclictest	2159251	-21	kworker/u8:3+events_unbound	00:25:17	3
1853483	99	27	24,2	cyclictest	2008791	-21	kworker/u8:0+events_unbound	22:25:22	3
1853483	99	27	24,2	cyclictest	1973139	-21	kworker/u8:1+events_unbound	21:30:24	3
1853483	99	27	24,2	cyclictest	1957697	-21	kworker/u8:4+flush-259:0	21:05:00	3
1853479	99	27	22,4	cyclictest	1961984	-21	ntpq	20:50:24	2
1853477	99	27	20,5	cyclictest	2066164	-21	latency_hist	22:35:01	1
1853473	99	27	21,4	cyclictest	2190112	-21	latency_hist	00:35:01	0
1853483	99	26	23,2	cyclictest	2034831	-21	kworker/u8:4+flush-259:0	22:20:21	3
1853483	99	26	23,2	cyclictest	1869296	-21	kworker/u8:0+events_unbound	19:55:18	3
1853477	99	26	23,2	cyclictest	2954009	-21	kworker/u8:2+events_unbound	19:39:40	1
1853477	99	26	23,2	cyclictest	1911110	-21	kworker/u8:0+events_unbound	21:24:41	1
1853477	99	26	23,2	cyclictest	1885351	-21	kworker/u8:4+events_unbound	19:59:43	1
1853483	99	25	22,2	cyclictest	2159251	-21	kworker/u8:3+flush-259:0	00:15:00	3
1853483	99	25	22,2	cyclictest	1911110	-21	kworker/u8:0+events_unbound	20:20:24	3
1853479	99	25	19,2	cyclictest	1911110	-21	kworker/u8:0+events_unbound	20:30:25	2
1853477	99	25	22,2	cyclictest	2107245	-21	kworker/u8:0+events_unbound	23:40:41	1
1853477	99	25	22,2	cyclictest	2107245	-21	kworker/u8:0+events_unbound	23:40:41	1
1853477	99	25	21,3	cyclictest	1885351	-21	kworker/u8:4+events_unbound	19:54:41	1
1853483	99	24	21,2	cyclictest	2133503	-21	kworker/u8:1+events_unbound	23:50:19	3
1853483	99	24	21,2	cyclictest	1957697	-21	kworker/u8:4+flush-259:0	21:45:28	3
1853483	99	24	21,2	cyclictest	1911019	-21	gpgv	20:05:01	3
1853479	99	24	21,2	cyclictest	3969202	-21	kworker/u8:1+flush-259:0	19:45:00	2
1853479	99	24	21,2	cyclictest	2954009	-21	kworker/u8:2+flush-259:0	19:30:16	2
1853479	99	24	21,2	cyclictest	2070966	-21	kworker/u8:2+flush-259:0	23:30:01	2
1853477	99	24	21,2	cyclictest	2159251	-21	kworker/u8:3+events_unbound	00:32:26	1
1853473	99	24	7,5	cyclictest	2008212	-21	ntpq	21:35:25	0
1853483	99	23	20,2	cyclictest	2070966	-21	kworker/u8:2+flush-259:0	22:55:26	3
1853483	99	23	20,2	cyclictest	1957697	-21	kworker/u8:4+events_unbound	21:25:23	3
1853483	99	23	20,2	cyclictest	1957697	-21	kworker/u8:4+events_unbound	21:25:23	3
1853479	99	23	19,3	cyclictest	2008791	-21	kworker/u8:0+flush-259:0	22:15:26	2
1853477	99	23	20,2	cyclictest	2133503	-21	kworker/u8:1+events_unbound	23:51:41	1
1853477	99	23	20,2	cyclictest	2070966	-21	kworker/u8:2+events_unbound	22:58:42	1
1853477	99	23	20,2	cyclictest	2008791	-21	kworker/u8:0+events_unbound	22:24:56	1
1853477	99	23	20,2	cyclictest	1957697	-21	kworker/u8:4+events_unbound	20:56:42	1
1853477	99	23	20,2	cyclictest	1911110	-21	kworker/u8:0+events_unbound	21:28:41	1
1853477	99	23	20,2	cyclictest	1911110	-21	kworker/u8:0+events_unbound	21:28:41	1
1853473	99	23	19,3	cyclictest	3754036	-21	systemd-journal	19:55:00	0
1853483	99	22	19,2	cyclictest	3969202	-21	kworker/u8:1+events_unbound	19:30:01	3
1853483	99	22	19,2	cyclictest	2107245	-21	kworker/u8:0+flush-259:0	23:40:20	3
1853483	99	22	19,2	cyclictest	2107245	-21	kworker/u8:0+flush-259:0	23:40:20	3
1853483	99	22	19,2	cyclictest	2070966	-21	kworker/u8:2+events_unbound	22:50:20	3
1853479	99	22	19,2	cyclictest	3969202	-21	kworker/u8:1+flush-259:0	19:35:17	2
1853479	99	22	19,2	cyclictest	2169257	-21	kworker/u8:0+events_unbound	00:35:19	2
1853479	99	22	19,2	cyclictest	2107245	-21	kworker/u8:0+events_unbound	23:30:15	2
1853479	99	22	19,2	cyclictest	2082000	-21	kworker/u8:3+events_unbound	22:55:00	2
1853479	99	22	19,2	cyclictest	2034831	-21	kworker/u8:4+flush-259:0	22:30:22	2
1853479	99	22	19,2	cyclictest	2019619	-21	kworker/u8:2+events_unbound	22:10:00	2
1853479	99	22	19,2	cyclictest	1869296	-21	kworker/u8:0+flush-259:0	19:50:21	2
1853479	99	22	18,3	cyclictest	1957697	-21	kworker/u8:4+flush-259:0	21:40:26	2
1853479	99	22	17,2	cyclictest	1885351	-21	kworker/u8:4+flush-259:0	19:45:16	2
1853477	99	22	19,2	cyclictest	2169257	-21	kworker/u8:0+events_unbound	00:20:40	1
1853477	99	22	19,2	cyclictest	2169257	-21	kworker/u8:0+events_unbound	00:13:35	1
1853477	99	22	19,2	cyclictest	2070966	-21	kworker/u8:2+events_unbound	22:37:42	1
1853477	99	22	19,2	cyclictest	1895462	-21	kworker/u8:2+events_unbound	20:22:42	1
1853477	99	22	17,3	cyclictest	2040231	-21	store	22:10:01	1
1853483	99	21	18,2	cyclictest	2097623	-21	kworker/u8:4+flush-259:0	23:15:00	3
1853483	99	21	18,2	cyclictest	2070966	-21	kworker/u8:2+events_unbound	22:45:17	3
1853483	99	21	18,2	cyclictest	2055881	-21	kworker/u8:1+events_unbound	22:35:18	3
1853483	99	21	18,2	cyclictest	2019619	-21	kworker/u8:2+flush-259:0	22:05:02	3
1853483	99	21	13,2	cyclictest	1885351	-21	kworker/u8:4+events_unbound	19:45:22	3
1853479	99	21	18,2	cyclictest	2133503	-21	kworker/u8:1+flush-259:0	23:50:15	2
1853479	99	21	18,2	cyclictest	2070966	-21	kworker/u8:2+flush-259:0	23:05:20	2
1853479	99	21	18,2	cyclictest	2070966	-21	kworker/u8:2+events_unbound	23:00:18	2
1853479	99	21	18,2	cyclictest	1957697	-21	kworker/u8:4+flush-259:0	21:15:22	2
1853479	99	21	18,2	cyclictest	1911110	-21	kworker/u8:0+events_unbound	21:20:27	2
1853479	99	21	18,2	cyclictest	1895462	-21	kworker/u8:2+events_unbound	20:40:22	2
1853479	99	21	15,5	cyclictest	1863264	-21	ntpq	19:15:22	2
1853479	99	21	15,4	cyclictest	2149136	-21	/usr/sbin/munin	23:55:14	2
1853477	99	21	18,2	cyclictest	2008791	-21	kworker/u8:0+events_unbound	22:13:40	1
1853477	99	21	18,2	cyclictest	1911110	-21	kworker/u8:0+events_unbound	21:02:41	1
1853477	99	21	18,2	cyclictest	1905242	-21	kworker/u8:1+events_unbound	20:04:57	1
1853477	99	21	18,2	cyclictest	1869296	-21	kworker/u8:0+events_unbound	19:45:02	1
1853473	99	21	6,5	cyclictest	1978366	-21	date	21:10:00	0
1853473	99	21	5,6	cyclictest	2071652	-21	ls	22:40:14	0
1853473	99	21	5,6	cyclictest	1874181	-21	sshd	19:27:22	0
1853473	99	21	5,5	cyclictest	2117203	-21	ntpq	23:20:24	0
1853473	99	21	18,2	cyclictest	2024521	-21	idleruntime-cro	21:55:00	0
1853473	99	21	14,5	cyclictest	3754036	-21	systemd-journal	23:14:40	0
1853483	99	20	17,2	cyclictest	2143215	-21	kworker/u8:3+events_unbound	23:55:20	3
1853483	99	20	17,2	cyclictest	2133503	-21	kworker/u8:1+flush-259:0	00:05:00	3
1853483	99	20	17,2	cyclictest	2107245	-21	kworker/u8:0+events_unbound	23:35:15	3
1853483	99	20	17,2	cyclictest	1911110	-21	kworker/u8:0+events_unbound	21:15:32	3
1853483	99	20	17,2	cyclictest	1911110	-21	kworker/u8:0+events_unbound	21:05:24	3
1853479	99	20	17,2	cyclictest	2008791	-21	kworker/u8:0+events_unbound	22:40:19	2
1853479	99	20	17,2	cyclictest	1911110	-21	kworker/u8:0+flush-259:0	20:05:25	2
1853479	99	20	14,5	cyclictest	1967085	-21	ntpq	20:55:20	2
1853477	99	20	17,2	cyclictest	2169257	-21	kworker/u8:0+events_unbound	00:15:29	1
1853477	99	20	17,2	cyclictest	2159251	-21	kworker/u8:3+events_unbound	00:25:42	1
1853477	99	20	17,2	cyclictest	2008791	-21	kworker/u8:0+events_unbound	21:50:25	1
1853477	99	20	17,2	cyclictest	1957697	-21	kworker/u8:4+events_unbound	21:45:41	1
1853477	99	20	17,2	cyclictest	1957697	-21	kworker/u8:4+events_unbound	20:53:40	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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