OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

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 May 04, 2026 12:44:06)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1118183	99	49	43,4	cyclictest	252	-21	systemd-journal	07:40:00	2
1118183	99	44	41,2	cyclictest	1377315	-21	kworker/u8:1+flush-259:0	12:10:21	2
1118176	99	43	37,4	cyclictest	1118094	-21	latency_hist	07:10:01	0
1118176	99	41	35,4	cyclictest	1180500	-21	/usr/sbin/munin	08:10:15	0
1118183	99	40	35,4	cyclictest	252	-21	systemd-journal	08:05:21	2
1118176	99	39	34,3	cyclictest	1206012	-21	latency_hist	08:35:01	0
1118183	99	38	35,2	cyclictest	1216277	-21	kworker/u8:3+events_unbound	10:20:18	2
1118183	99	37	33,3	cyclictest	1330925	-21	kworker/u8:0+flush-259:0	11:10:00	2
1118176	99	37	32,3	cyclictest	1128438	-21	latency_hist	07:20:01	0
1118186	99	35	28,5	cyclictest	1211704	-21	base64	08:40:00	3
1118176	99	35	29,5	cyclictest	1460184	-21	ntpq	12:35:21	0
1118186	99	34	28,4	cyclictest	1175094	-21	latency_hist	08:05:01	3
1118183	99	34	31,2	cyclictest	3271704	-21	kworker/u8:1+flush-259:0	07:15:17	2
1118183	99	34	31,2	cyclictest	3271704	-21	kworker/u8:1+events_unbound	07:10:20	2
1118180	99	34	31,2	cyclictest	1190292	-21	kworker/u8:1+events_unbound	09:05:15	1
1118176	99	34	29,4	cyclictest	1211350	-21	cat	08:40:00	0
1118180	99	33	29,2	cyclictest	1383283	-21	kworker/u8:0+flush-259:0	12:15:01	1
1118183	99	32	28,3	cyclictest	1112604	-21	kworker/u8:4+flush-259:0	07:45:26	2
1118180	99	31	28,2	cyclictest	1190292	-21	kworker/u8:1+events_unbound	08:40:23	1
1118180	99	31	26,4	cyclictest	1190551	-21	latency_hist	08:20:00	1
1118183	99	30	27,2	cyclictest	1112604	-21	kworker/u8:4+flush-259:0	07:40:24	2
1118176	99	30	26,3	cyclictest	509	-21	rs:main		0
1118176	99	30	25,4	cyclictest	1351527	-21	kworker/u8:2+flush-259:0	11:10:16	0
1118183	99	29	25,3	cyclictest	1351527	-21	kworker/u8:2+events_unbound	11:00:02	2
1118183	99	29	25,3	cyclictest	1211297	-21	gpgv	08:40:01	2
1118180	99	29	26,2	cyclictest	1216277	-21	kworker/u8:3+flush-259:0	09:00:21	1
1118176	99	29	25,3	cyclictest	1175335	-21	kworker/u8:0+flush-259:0	08:15:16	0
1118183	99	28	24,3	cyclictest	1320621	-21	kworker/u8:2+events_unbound	10:35:20	2
1118183	99	28	21,5	cyclictest	1397786	-21	ntpq	11:35:21	2
1118176	99	28	24,3	cyclictest	1289977	-21	apt-get	09:55:12	0
1118183	99	27	23,3	cyclictest	1377315	-21	kworker/u8:1+events_unbound	11:20:15	2
1118180	99	27	23,3	cyclictest	1175335	-21	kworker/u8:0+flush-259:0	08:10:25	1
1118183	99	26	23,2	cyclictest	1377315	-21	kworker/u8:1+flush-259:0	11:55:21	2
1118180	99	26	23,2	cyclictest	1190292	-21	kworker/u8:1+events_unbound	10:30:19	1
1118180	99	26	22,3	cyclictest	1377315	-21	kworker/u8:1+events_unbound	11:20:21	1
1118180	99	26	21,4	cyclictest	1175335	-21	kworker/u8:0+events_unbound	08:08:22	1
1118180	99	26	19,5	cyclictest	1413725	-21	ntpq	11:50:23	1
1118176	99	26	22,3	cyclictest	1377315	-21	kworker/u8:1+flush-259:0	11:45:24	0
1118186	99	25	21,3	cyclictest	1216277	-21	kworker/u8:3+flush-259:0	10:10:28	3
1118183	99	25	22,2	cyclictest	1351527	-21	kworker/u8:2+flush-259:0	10:55:20	2
1118183	99	25	22,2	cyclictest	1190292	-21	kworker/u8:1+events_unbound	09:00:11	2
1118183	99	25	21,3	cyclictest	1190292	-21	kworker/u8:1+events_unbound	10:40:21	2
1118183	99	25	21,3	cyclictest	1190292	-21	kworker/u8:1+events_unbound	09:45:17	2
1118183	99	25	21,3	cyclictest	1159675	-21	kworker/u8:2+events_unbound	07:54:23	2
1118183	99	25	20,4	cyclictest	252	-21	systemd-journal	10:50:22	2
1118183	99	25	20,4	cyclictest	252	-21	systemd-journal	10:50:22	2
1118180	99	25	21,3	cyclictest	1320621	-21	kworker/u8:2+events_unbound	10:37:24	1
1118180	99	25	21,3	cyclictest	1264015	-21	kworker/u8:0+events_unbound	09:33:23	1
1118176	99	25	19,4	cyclictest	1	-21	systemd	11:45:01	0
1118176	99	25	12,11	cyclictest	1123292	-21	latency_hist	07:15:01	0
1118186	99	24	20,3	cyclictest	1227778	-21	apt-get	08:55:10	3
1118183	99	24	21,2	cyclictest	1216277	-21	kworker/u8:3+flush-259:0	10:25:16	2
1118183	99	24	20,3	cyclictest	1377315	-21	kworker/u8:1+flush-259:0	11:26:22	2
1118183	99	24	19,3	cyclictest	1377817	-21	cp	11:20:01	2
1118183	99	24	15,7	cyclictest	252	-21	systemd-journal	07:35:00	2
1118180	99	24	21,2	cyclictest	1440463	-21	kworker/u8:3+flush-259:0	12:20:33	1
1118180	99	24	21,2	cyclictest	1341435	-21	kworker/u8:3+flush-259:0	10:50:23	1
1118180	99	24	21,2	cyclictest	1341435	-21	kworker/u8:3+flush-259:0	10:50:22	1
1118180	99	24	21,2	cyclictest	1190292	-21	kworker/u8:1+flush-259:0	10:00:25	1
1118180	99	24	21,2	cyclictest	1190292	-21	kworker/u8:1+flush-259:0	09:15:28	1
1118180	99	24	20,3	cyclictest	1330925	-21	kworker/u8:0+events_unbound	11:05:14	1
1118180	99	24	1,21	cyclictest	1	-21	systemd	12:05:00	1
1118176	99	24	17,5	cyclictest	1319722	-21	ntpq	10:20:22	0
1118186	99	23	19,3	cyclictest	1180486	-21	kworker/u8:3+flush-259:0	08:20:01	3
1118186	99	23	17,4	cyclictest	1138964	-21	apt-get	07:30:11	3
1118183	99	23	20,2	cyclictest	1190292	-21	kworker/u8:1+flush-259:0	10:30:21	2
1118183	99	23	20,2	cyclictest	1112604	-21	kworker/u8:4+flush-259:0	07:20:18	2
1118183	99	23	18,3	cyclictest	252	-21	systemd-journal	09:51:21	2
1118180	99	23	19,3	cyclictest	1264015	-21	kworker/u8:0+flush-259:0	09:35:35	1
1118183	99	22	19,2	cyclictest	3271704	-21	kworker/u8:1+events_unbound	07:25:13	2
1118183	99	22	19,2	cyclictest	1195771	-21	kworker/u8:0+flush-259:0	08:30:22	2
1118183	99	22	18,3	cyclictest	1159675	-21	kworker/u8:2+events_unbound	07:58:23	2
1118180	99	22	19,2	cyclictest	1216277	-21	kworker/u8:3+events_unbound	09:40:23	1
1118180	99	22	19,2	cyclictest	1190292	-21	kworker/u8:1+events_unbound	10:28:23	1
1118180	99	22	19,2	cyclictest	1112604	-21	kworker/u8:4+events_unbound	07:45:23	1
1118180	99	22	17,4	cyclictest	1451031	-21	apt-get	12:30:13	1
1118176	99	22	18,3	cyclictest	1149221	-21	latency_hist	07:40:00	0
1118183	99	21	18,2	cyclictest	1430293	-21	kworker/u8:2+events_unbound	12:25:17	2
1118183	99	21	18,2	cyclictest	1341435	-21	kworker/u8:3+events_unbound	10:45:20	2
1118183	99	21	18,2	cyclictest	1206039	-21	kworker/u8:2+events_unbound	08:51:23	2
1118183	99	21	18,2	cyclictest	1190292	-21	kworker/u8:1+events_unbound	09:15:25	2
1118180	99	21	18,2	cyclictest	1377315	-21	kworker/u8:1+events_unbound	11:30:16	1
1118180	99	21	18,2	cyclictest	1216277	-21	kworker/u8:3+events_unbound	10:20:14	1
1118180	99	21	18,2	cyclictest	1206039	-21	kworker/u8:2+events_unbound	08:35:09	1
1118180	99	21	18,2	cyclictest	1190292	-21	kworker/u8:1+events_unbound	09:10:13	1
1118180	99	21	17,3	cyclictest	1330925	-21	kworker/u8:0+events_unbound	10:59:24	1
1118180	99	21	16,3	cyclictest	252	-21	systemd-journal	08:25:23	1
1118180	99	21	16,3	cyclictest	252	-21	systemd-journal	08:25:22	1
1118176	99	21	15,4	cyclictest	1435490	-21	/usr/sbin/munin	12:15:15	0
1118186	99	20	17,2	cyclictest	1351527	-21	kworker/u8:2+flush-259:0	11:20:01	3
1118183	99	20	18,2	cyclictest	1430293	-21	kworker/u8:2+events_unbound	12:15:01	2
1118183	99	20	17,2	cyclictest	1377315	-21	kworker/u8:1+flush-259:0	12:05:19	2
1118183	99	20	17,2	cyclictest	1351527	-21	kworker/u8:2+events_unbound	11:10:21	2
1118183	99	20	16,3	cyclictest	1440463	-21	kworker/u8:3+events_unbound	12:22:23	2
1118180	99	20	17,2	cyclictest	1377315	-21	kworker/u8:1+flush-259:0	12:35:18	1
1118180	99	20	17,2	cyclictest	1341435	-21	kworker/u8:3+flush-259:0	10:45:19	1
1118180	99	20	17,2	cyclictest	1112604	-21	kworker/u8:4+events_unbound	07:19:23	1
1118180	99	20	16,3	cyclictest	3271704	-21	kworker/u8:1+flush-259:0	07:10:24	1
1118180	99	20	16,3	cyclictest	1190292	-21	kworker/u8:1+events_unbound	10:12:24	1
1118176	99	20	16,2	cyclictest	1190292	-21	kworker/u8:1+flush-259:0	10:30:15	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


Access: public		Short link to this page
This page was last modified on 2021-09-01 - 00:34