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 May 13, 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
1049094	99	70	64,4	cyclictest	1147785	-21	kworker/u8:0+flush-259:0	21:30:00	2
1049094	99	57	52,3	cyclictest	1054669	-21	kworker/u8:2+flush-259:0	20:30:01	2
1049099	99	55	52,2	cyclictest	1362147	-21	kworker/u8:2+events_unbound	00:33:17	3
1049099	99	53	49,3	cyclictest	1356631	-21	gpgv	00:05:01	3
1049099	99	53	49,3	cyclictest	1356631	-21	gpgv	00:05:00	3
1049099	99	51	48,2	cyclictest	1147785	-21	kworker/u8:0+events_unbound	21:52:36	3
1049099	99	51	48,2	cyclictest	1054669	-21	kworker/u8:2+events_unbound	20:51:39	3
1049099	99	50	47,2	cyclictest	1147785	-21	kworker/u8:0+events_unbound	21:32:39	3
1049094	99	50	45,4	cyclictest	1236218	-21	kworker/u8:1+flush-259:0	23:25:00	2
1049099	99	49	46,2	cyclictest	1351560	-21	kworker/u8:4+events_unbound	00:26:39	3
1049099	99	49	46,2	cyclictest	1215194	-21	kworker/u8:2+events_unbound	22:24:39	3
1049099	99	48	45,2	cyclictest	1351560	-21	kworker/u8:4+events_unbound	00:19:41	3
1049099	99	48	45,2	cyclictest	1351560	-21	kworker/u8:4+events_unbound	00:19:40	3
1049099	99	48	45,2	cyclictest	1215194	-21	kworker/u8:2+events_unbound	22:42:40	3
1049099	99	48	45,2	cyclictest	1054669	-21	kworker/u8:2+events_unbound	20:01:40	3
1049094	99	48	44,3	cyclictest	1147785	-21	kworker/u8:0+flush-259:0	21:05:19	2
1049099	99	47	45,2	cyclictest	1308853	-21	kworker/u8:0+events_unbound	23:21:39	3
1049094	99	47	43,3	cyclictest	1183775	-21	kworker/u8:3+events_unbound	21:40:20	2
1049087	99	47	41,4	cyclictest	1387933	-21	latency_hist	00:35:00	0
1049099	99	46	43,2	cyclictest	1292921	-21	kworker/u8:0+flush-259:0	23:05:00	3
1049099	99	46	43,2	cyclictest	1111281	-21	kworker/u8:4+events_unbound	20:22:17	3
1049099	99	46	42,3	cyclictest	1362147	-21	kworker/u8:2+events_unbound	00:13:03	3
1049099	99	46	40,5	cyclictest	1302325	-21	ntpq	23:10:22	3
1049099	99	45	43,2	cyclictest	1183775	-21	kworker/u8:3+events_unbound	21:55:25	3
1049099	99	45	43,2	cyclictest	1054669	-21	kworker/u8:2+events_unbound	19:22:05	3
1049099	99	45	42,2	cyclictest	3195954	-21	kworker/u8:0+events_unbound	19:51:39	3
1049087	99	45	31,12	cyclictest	1313153	-21	ntpq	23:20:22	0
1049099	99	44	41,2	cyclictest	1236218	-21	kworker/u8:1+events_unbound	22:52:46	3
1049094	99	44	36,5	cyclictest	1215176	-21	latency_hist	21:50:00	2
1049090	99	44	40,3	cyclictest	1236218	-21	kworker/u8:1+flush-259:0	22:50:13	1
1049090	99	44	40,3	cyclictest	1183775	-21	kworker/u8:3+flush-259:0	21:35:00	1
1049094	99	43	37,4	cyclictest	1215194	-21	kworker/u8:2+events_unbound	23:05:17	2
1049087	99	43	37,4	cyclictest	1199738	-21	latency_hist	21:35:00	0
1049090	99	42	37,4	cyclictest	1303337	-21	gpgv	23:15:00	1
1049090	99	42	33,6	cyclictest	252	-21	systemd-journal	23:30:00	1
1049099	99	41	39,2	cyclictest	3195954	-21	kworker/u8:0+events_unbound	19:17:39	3
1049094	99	41	37,3	cyclictest	1147785	-21	kworker/u8:0+flush-259:0	21:55:00	2
1049087	99	40	35,4	cyclictest	1141688	-21	ntpq	20:35:19	0
1049094	99	39	35,3	cyclictest	1215194	-21	kworker/u8:2+events_unbound	22:50:24	2
1049094	99	39	35,3	cyclictest	1054669	-21	kworker/u8:2+events_unbound	20:12:39	2
1049094	99	38	32,4	cyclictest	252	-21	systemd-journal	19:18:39	2
1049090	99	38	31,5	cyclictest	1246516	-21	kworker/u8:0+flush-259:0	22:30:15	1
1049090	99	38	29,6	cyclictest	252	-21	systemd-journal	23:00:00	1
1049087	99	38	32,4	cyclictest	1314418	-21	diskstats	23:25:15	0
1049099	99	37	34,2	cyclictest	1236218	-21	kworker/u8:1+events_unbound	23:35:27	3
1049099	99	37	31,4	cyclictest	252	-21	systemd-journal	21:35:38	3
1049087	99	37	32,3	cyclictest	1251940	-21	apt-get	22:25:11	0
1049094	99	36	33,2	cyclictest	3195954	-21	kworker/u8:0+flush-259:0	20:24:30	2
1049094	99	36	33,2	cyclictest	1236218	-21	kworker/u8:1+events_unbound	23:37:38	2
1049090	99	36	31,3	cyclictest	1351595	-21	apt-get	00:00:12	1
1049090	99	36	31,3	cyclictest	1351595	-21	apt-get	00:00:12	1
1049090	99	36	29,5	cyclictest	1267119	-21	latency_hist	22:40:01	1
1049090	99	36	29,5	cyclictest	1054669	-21	kworker/u8:2+flush-259:0	19:20:16	1
1049087	99	36	32,3	cyclictest	1356542	-21	gpgv	00:05:01	0
1049087	99	36	32,3	cyclictest	1356542	-21	gpgv	00:05:00	0
1049087	99	36	28,7	cyclictest	75	-21	kswapd0	19:10:02	0
1049094	99	35	31,3	cyclictest	3195954	-21	kworker/u8:0+events_unbound	20:15:22	2
1049094	99	35	31,3	cyclictest	1183775	-21	kworker/u8:3+events_unbound	22:17:40	2
1049094	99	35	30,3	cyclictest	3195954	-21	kworker/u8:0+flush-259:0	19:40:15	2
1049099	99	34	32,2	cyclictest	1054669	-21	kworker/u8:2+events_unbound	20:35:26	3
1049094	99	34	31,2	cyclictest	1147785	-21	kworker/u8:0+flush-259:0	22:00:25	2
1049094	99	34	30,3	cyclictest	1054669	-21	kworker/u8:2+events_unbound	21:20:19	2
1049094	99	34	28,4	cyclictest	509	-21	rs:main		2
1049087	99	34	23,10	cyclictest	1122283	-21	apt-get	20:20:11	0
1049094	99	33	31,1	cyclictest	1236218	-21	kworker/u8:1+events_unbound	23:12:50	2
1049090	99	33	27,4	cyclictest	1307945	-21	ntpq	23:15:22	1
1049087	99	33	27,5	cyclictest	1350075	-21	ntpq	23:55:21	0
1049099	99	32	27,4	cyclictest	1168572	-21	/usr/sbin/munin	21:05:13	3
1049099	99	32	27,4	cyclictest	1049458	-21	base64	19:10:00	3
1049094	99	32	28,3	cyclictest	990412	-21	kworker/u8:3+events_unbound	19:12:39	2
1049094	99	32	28,3	cyclictest	1362147	-21	kworker/u8:2+events_unbound	00:34:40	2
1049094	99	32	28,3	cyclictest	1272300	-21	kworker/u8:3+events_unbound	23:19:41	2
1049094	99	32	28,3	cyclictest	1246516	-21	kworker/u8:0+events_unbound	22:25:22	2
1049094	99	32	28,3	cyclictest	1137478	-21	kworker/u8:1+events_unbound	20:37:21	2
1049090	99	32	25,5	cyclictest	1357028	-21	cat	00:05:00	1
1049087	99	32	29,2	cyclictest	1372690	-21	apt-get	00:20:11	0
1049087	99	32	26,4	cyclictest	1194115	-21	apt-get	21:30:00	0
1049099	99	31	26,3	cyclictest	1350901	-21	latency_hist	00:00:00	3
1049094	99	31	25,4	cyclictest	1075143	-21	latency_hist	19:35:01	2
1049090	99	31	24,5	cyclictest	1178610	-21	latency_hist	21:15:00	1
1049087	99	31	25,4	cyclictest	1147758	-21	latency_hist	20:45:01	0
1049099	99	30	27,2	cyclictest	1173489	-21	kworker/u8:1+events_unbound	21:12:25	3
1049094	99	30	24,4	cyclictest	1198893	-21	ntpq	21:30:23	2
1049090	99	30	22,6	cyclictest	252	-21	systemd-journal	20:50:00	1
1049090	99	30	22,6	cyclictest	1334583	-21	ntpq	23:40:22	1
1049087	99	30	17,11	cyclictest	1340841	-21	apt-get	23:50:12	0
1049099	99	29	26,2	cyclictest	3195954	-21	kworker/u8:0+events_unbound	19:42:38	3
1049099	99	29	26,2	cyclictest	1215194	-21	kworker/u8:2+events_unbound	22:14:39	3
1049099	99	29	26,2	cyclictest	1215194	-21	kworker/u8:2+events_unbound	22:05:38	3
1049094	99	29	26,2	cyclictest	1054669	-21	kworker/u8:2+events_unbound	19:20:22	2
1049094	99	29	25,3	cyclictest	1215194	-21	kworker/u8:2+events_unbound	23:00:00	2
1049094	99	29	25,3	cyclictest	1054669	-21	kworker/u8:2+events_unbound	19:55:21	2
1049094	99	29	24,3	cyclictest	1111281	-21	kworker/u8:4+events_unbound	20:45:16	2
1049094	99	29	23,4	cyclictest	1335462	-21	latency_hist	23:45:00	2
1049099	99	28	25,2	cyclictest	1236218	-21	kworker/u8:1+events_unbound	23:48:40	3
1049094	99	28	24,3	cyclictest	3195954	-21	kworker/u8:0+events_unbound	20:06:40	2
1049090	99	28	24,3	cyclictest	1183775	-21	kworker/u8:3+flush-259:0	21:40:00	1
1049090	99	28	23,3	cyclictest	1215194	-21	kworker/u8:2+flush-259:0	22:10:24	1
1049090	99	28	21,5	cyclictest	1340577	-21	latency_hist	23:50:00	1
1049087	99	28	24,3	cyclictest	1147785	-21	kworker/u8:0+flush-259:0	22:00:00	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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