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 Wed Aug 26, 2026 00:44:07)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1011688	99	66	60,4	cyclictest	1058488	-21	apt-get	19:55:11	0
1011688	99	48	45,2	cyclictest	1229585	-21	kworker/u8:2+events_unbound	22:45:24	0
1011698	99	45	41,3	cyclictest	1131334	-21	kworker/u8:2+flush-259:0	21:25:26	3
1011696	99	44	39,4	cyclictest	1162402	-21	kworker/u8:3+flush-259:0	21:35:26	2
1011696	99	44	39,4	cyclictest	1162402	-21	kworker/u8:3+flush-259:0	21:35:25	2
1011696	99	40	34,4	cyclictest	1151835	-21	latency_hist	21:25:00	2
1011688	99	39	36,2	cyclictest	1038048	-21	kworker/u8:5+events_unbound	20:40:25	0
1011698	99	38	34,3	cyclictest	1229585	-21	kworker/u8:2+events_unbound	23:40:11	3
1011698	99	38	32,4	cyclictest	1261071	-21	apt-get	23:10:11	3
1011692	99	38	32,4	cyclictest	1255893	-21	apt-get	23:05:11	1
1011688	99	38	35,2	cyclictest	1318291	-21	kworker/u8:1+events_unbound	00:20:22	0
1011688	99	37	31,4	cyclictest	1100234	-21	cp	20:35:01	0
1011688	99	37	30,5	cyclictest	1318276	-21	latency_hist	00:05:01	0
1011688	99	36	33,2	cyclictest	1229585	-21	kworker/u8:2+events_unbound	23:35:15	0
1011688	99	36	33,2	cyclictest	1141476	-21	kworker/u8:1+events_unbound	21:40:15	0
1011692	99	34	30,3	cyclictest	1038048	-21	kworker/u8:5+flush-259:0	19:45:00	1
1011692	99	34	21,4	cyclictest	1177740	-21	latency_hist	21:50:00	1
1011688	99	34	31,2	cyclictest	1105304	-21	kworker/u8:0+events_unbound	21:15:24	0
1011688	99	34	31,2	cyclictest	1105304	-21	kworker/u8:0+events_unbound	21:00:23	0
1011698	99	33	30,2	cyclictest	1105304	-21	kworker/u8:0+flush-259:0	21:15:21	3
1011698	99	33	30,2	cyclictest	1001618	-21	kworker/u8:1+flush-259:0	19:40:19	3
1011692	99	33	28,4	cyclictest	1162402	-21	kworker/u8:3+flush-259:0	21:50:24	1
1011698	99	32	29,2	cyclictest	1188056	-21	kworker/u8:2+flush-259:0	22:25:16	3
1011696	99	32	26,4	cyclictest	1344452	-21	apt-get	00:30:13	2
1011688	99	32	30,2	cyclictest	1131334	-21	kworker/u8:2+events_unbound	21:20:26	0
1011688	99	32	30,2	cyclictest	1048104	-21	kworker/u8:3+events_unbound	19:50:14	0
1011688	99	32	30,2	cyclictest	1047781	-21	kworker/u8:0+events_unbound	20:00:14	0
1011698	99	31	28,2	cyclictest	1318291	-21	kworker/u8:1+events_unbound	00:20:00	3
1011698	99	31	27,3	cyclictest	1063425	-21	kworker/u8:1+flush-259:0	20:35:21	3
1011692	99	31	27,3	cyclictest	1261036	-21	kworker/u8:4+events_unbound	23:25:00	1
1011692	99	31	26,3	cyclictest	1099848	-21	base64	20:35:01	1
1011688	99	31	30,1	cyclictest	1213848	-21	kworker/u8:0+events_unbound	22:50:22	0
1011688	99	31	28,2	cyclictest	1047781	-21	kworker/u8:0+events_unbound	20:05:15	0
1011698	99	30	27,2	cyclictest	1115126	-21	kworker/u8:3+events_unbound	21:05:00	3
1011698	99	30	26,3	cyclictest	1219277	-21	/usr/sbin/munin	22:30:15	3
1011696	99	30	25,4	cyclictest	1038048	-21	kworker/u8:5+flush-259:0	20:25:00	2
1011696	99	30	22,5	cyclictest	335557	-21	systemd-journal	20:35:01	2
1011692	99	30	24,4	cyclictest	1078973	-21	latency_hist	20:15:01	1
1011688	99	30	28,2	cyclictest	1172312	-21	kworker/u8:0+events_unbound	21:50:28	0
1011688	99	30	27,2	cyclictest	1229585	-21	kworker/u8:2+events_unbound	23:20:22	0
1011688	99	30	26,3	cyclictest	1152102	-21	apt-get	21:25:12	0
1011688	99	30	26,3	cyclictest	1032562	-21	apt-get	19:30:14	0
1011698	99	29	26,2	cyclictest	1105304	-21	kworker/u8:0+events_unbound	20:45:59	3
1011698	99	29	22,5	cyclictest	1203932	-21	diskstats	22:15:14	3
1011688	99	29	26,2	cyclictest	1318291	-21	kworker/u8:1+events_unbound	00:30:24	0
1011688	99	29	26,2	cyclictest	1297528	-21	kworker/u8:0+events_unbound	23:45:20	0
1011688	99	29	26,2	cyclictest	1297528	-21	kworker/u8:0+events_unbound	23:45:20	0
1011688	99	29	26,2	cyclictest	1261036	-21	kworker/u8:4+events_unbound	23:55:23	0
1011688	99	29	26,2	cyclictest	1213848	-21	kworker/u8:0+flush-259:0	22:35:22	0
1011688	99	29	23,5	cyclictest	1192317	-21	ntpq	22:00:22	0
1011698	99	28	24,3	cyclictest	1188056	-21	kworker/u8:2+events_unbound	22:10:00	3
1011696	99	28	22,4	cyclictest	1083340	-21	ntpq	20:15:24	2
1011696	99	28	21,5	cyclictest	335557	-21	systemd-journal	21:19:59	2
1011692	99	28	24,3	cyclictest	1302979	-21	apt-get	23:50:13	1
1011692	99	28	24,3	cyclictest	1302979	-21	apt-get	23:50:13	1
1011688	99	28	25,2	cyclictest	1261036	-21	kworker/u8:4+events_unbound	00:35:21	0
1011688	99	28	25,2	cyclictest	1162402	-21	kworker/u8:3+events_unbound	22:30:23	0
1011698	99	27	24,2	cyclictest	1048104	-21	kworker/u8:3+flush-259:0	19:45:15	3
1011698	99	27	24,2	cyclictest	1047781	-21	kworker/u8:0+events_unbound	20:05:30	3
1011698	99	27	23,3	cyclictest	1261036	-21	kworker/u8:4+events_unbound	23:31:36	3
1011698	99	27	23,3	cyclictest	1001618	-21	kworker/u8:1+events_unbound	19:25:25	3
1011696	99	27	20,5	cyclictest	1109637	-21	ntpq	20:40:24	2
1011692	99	27	21,4	cyclictest	1349573	-21	/usr/sbin/munin	00:35:15	1
1011692	99	27	21,4	cyclictest	1338960	-21	latency_hist	00:25:01	1
1011688	99	27	24,2	cyclictest	968583	-21	kworker/u8:2+events_unbound	19:11:01	0
1011688	99	27	24,2	cyclictest	1038048	-21	kworker/u8:5+events_unbound	19:35:25	0
1011688	99	27	23,3	cyclictest	1038048	-21	kworker/u8:5+flush-259:0	20:30:57	0
1011692	99	26	20,4	cyclictest	1323690	-21	/usr/sbin/munin	00:10:21	1
1011688	99	26	23,2	cyclictest	1188056	-21	kworker/u8:2+events_unbound	22:15:23	0
1011688	99	26	23,2	cyclictest	1162402	-21	kworker/u8:3+events_unbound	22:56:00	0
1011688	99	26	23,2	cyclictest	1105304	-21	kworker/u8:0+events_unbound	20:55:32	0
1011698	99	25	22,2	cyclictest	1063425	-21	kworker/u8:1+events_unbound	20:44:01	3
1011698	99	25	21,3	cyclictest	968583	-21	kworker/u8:2+events_unbound	19:34:02	3
1011698	99	25	21,3	cyclictest	1229585	-21	kworker/u8:2+events_unbound	23:19:01	3
1011692	99	25	18,5	cyclictest	335557	-21	systemd-journal	20:20:01	1
1011688	99	25	23,2	cyclictest	1063425	-21	kworker/u8:1+events_unbound	20:25:16	0
1011688	99	25	22,2	cyclictest	1318291	-21	kworker/u8:1+events_unbound	00:12:03	0
1011688	99	25	22,2	cyclictest	1141476	-21	kworker/u8:1+flush-259:0	21:30:16	0
1011688	99	25	22,2	cyclictest	1141476	-21	kworker/u8:1+flush-259:0	21:30:15	0
1011688	99	25	19,4	cyclictest	1213860	-21	latency_hist	22:25:01	0
1011698	99	24	21,2	cyclictest	1131334	-21	kworker/u8:2+events_unbound	21:20:23	3
1011698	99	24	21,2	cyclictest	1048104	-21	kworker/u8:3+events_unbound	19:51:01	3
1011698	99	24	19,3	cyclictest	1229965	-21	cat	22:40:02	3
1011696	99	24	19,3	cyclictest	1141476	-21	kworker/u8:1+events_unbound	21:40:19	2
1011696	99	24	19,3	cyclictest	1105304	-21	kworker/u8:0+flush-259:0	21:05:25	2
1011688	99	24	21,2	cyclictest	1260825	-21	kworker/u8:0+events_unbound	23:13:01	0
1011688	99	24	20,2	cyclictest	1141471	-21	sshd	21:14:59	0
1011688	99	24	18,4	cyclictest	1026265	-21	ntpq	19:20:20	0
1011698	99	23	19,3	cyclictest	1188056	-21	kworker/u8:2+events_unbound	22:10:17	3
1011696	99	23	18,4	cyclictest	1229585	-21	kworker/u8:2+flush-259:0	23:30:19	2
1011696	99	23	17,4	cyclictest	1047781	-21	kworker/u8:0+flush-259:0	20:05:19	2
1011692	99	23	17,4	cyclictest	1313073	-21	latency_hist	00:00:00	1
1011688	99	23	20,2	cyclictest	1001618	-21	kworker/u8:1+events_unbound	19:29:02	0
1011698	99	22	20,2	cyclictest	1047781	-21	kworker/u8:0+events_unbound	20:20:21	3
1011698	99	22	18,3	cyclictest	968583	-21	kworker/u8:2+flush-259:0	19:25:00	3
1011698	99	22	18,3	cyclictest	968583	-21	kworker/u8:2+events_unbound	19:15:29	3
1011698	99	22	18,3	cyclictest	1172312	-21	kworker/u8:0+events_unbound	21:54:01	3
1011698	99	22	18,3	cyclictest	1162402	-21	kworker/u8:3+events_unbound	21:35:29	3
1011698	99	22	18,3	cyclictest	1162402	-21	kworker/u8:3+events_unbound	21:35:28	3
1011698	99	22	18,3	cyclictest	1038048	-21	kworker/u8:5+events_unbound	19:35:17	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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