OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, 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, lowest P state: ondemand
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack5slot4s.osadl.org (updated Sun Mar 08, 2026 00:44:15)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1196740	99	51	45,4	cyclictest	1387119	-21	kworker/u8:1+events_unbound	23:11:42	1
1196740	99	49	42,5	cyclictest	1263050	-21	kworker/u8:2+flush-8:0	20:36:58	1
1196740	99	49	39,7	cyclictest	1327321	-21	latency_hist	21:20:01	1
1196740	99	48	43,3	cyclictest	1191718	-21	kworker/u8:1+events_unbound	21:50:01	1
1196740	99	47	40,5	cyclictest	1460825	-21	kworker/u8:3+flush-8:0	23:51:43	1
1196740	99	47	38,6	cyclictest	1238368	-21	latency_hist	19:50:01	1
1196740	99	47	37,7	cyclictest	1381939	-21	latency_hist	22:15:01	1
1196740	99	44	39,3	cyclictest	1191718	-21	kworker/u8:1+events_unbound	20:31:56	1
1196740	99	44	39,3	cyclictest	1051571	-21	kworker/u8:4+flush-8:0	20:15:00	1
1196740	99	44	37,5	cyclictest	1332502	-21	kworker/u8:2+events_unbound	22:01:52	1
1196740	99	44	36,5	cyclictest	1416514	-21	kworker/u8:2+events_unbound	22:51:55	1
1196736	99	44	35,6	cyclictest	1451040	-21	latency_hist	23:25:01	0
1196740	99	43	36,5	cyclictest	1376743	-21	kworker/u8:0+flush-8:0	23:31:57	1
1196740	99	43	36,5	cyclictest	1376743	-21	kworker/u8:0+events_unbound	22:41:44	1
1196740	99	43	34,6	cyclictest	280	-21	systemd-journal	20:46:42	1
1196740	99	42	34,6	cyclictest	1332502	-21	kworker/u8:2+flush-8:0	22:07:01	1
1196740	99	42	33,6	cyclictest	1387119	-21	kworker/u8:1+flush-8:0	23:56:52	1
1196740	99	42	30,9	cyclictest	280	-21	systemd-journal	00:31:44	1
1196736	99	42	33,7	cyclictest	1341348	-21	ntpq	21:31:51	0
1196740	99	41	35,4	cyclictest	280	-21	systemd-journal	00:16:43	1
1431815	2	40	0,3	chrt	0	-21	swapper/2	23:06:42	2
1196742	99	40	30,8	cyclictest	1292759	-21	awk	20:45:00	2
1196740	99	40	36,3	cyclictest	1270910	-21	kworker/u8:0+events_unbound	20:26:47	1
1196740	99	40	35,3	cyclictest	1191718	-21	kworker/u8:1+events_unbound	20:51:49	1
1196740	99	40	34,4	cyclictest	1485947	-21	kworker/u8:2+flush-8:0	00:01:55	1
1196740	99	40	34,4	cyclictest	1466381	-21	kworker/u8:0+flush-8:0	00:06:56	1
1196740	99	39	34,3	cyclictest	1460825	-21	kworker/u8:3+events_unbound	23:46:46	1
1196740	99	39	33,4	cyclictest	1495842	-21	kworker/u8:1+events_unbound	00:11:58	1
1196740	99	39	33,4	cyclictest	1332502	-21	kworker/u8:2+events_unbound	21:45:00	1
1196740	99	39	30,4	cyclictest	1387119	-21	kworker/u8:1+events_unbound	23:16:41	1
1196736	99	39	30,6	cyclictest	1253192	-21	latency_hist	20:05:00	0
1196740	99	38	32,5	cyclictest	1387119	-21	kworker/u8:1+flush-8:0	23:26:58	1
1196740	99	38	28,7	cyclictest	280	-21	systemd-journal	21:11:42	1
1196736	99	38	30,5	cyclictest	1312512	-21	latency_hist	21:05:01	0
1196736	99	38	28,8	cyclictest	1207726	-21	ntpq	19:17:00	0
1490402	2	37	0,5	sleep2	0	-21	swapper/2	00:01:59	2
1196740	99	37	31,5	cyclictest	1460825	-21	kworker/u8:3+flush-8:0	00:21:58	1
1196740	99	37	31,5	cyclictest	1337857	-21	kworker/u8:3+flush-8:0	22:16:52	1
1196740	99	37	31,4	cyclictest	1051571	-21	kworker/u8:4+events_unbound	20:06:54	1
1196740	99	37	31,4	cyclictest	1051571	-21	kworker/u8:4+events_unbound	20:06:54	1
1196740	99	37	30,5	cyclictest	1397094	-21	kworker/u8:3+events_unbound	22:36:55	1
1196736	99	37	31,4	cyclictest	1416514	-21	kworker/u8:2+flush-8:0	23:01:44	0
1196736	99	37	29,6	cyclictest	1347357	-21	awk	21:40:00	0
1196736	99	37	29,6	cyclictest	1347357	-21	awk	21:40:00	0
1196740	99	36	31,3	cyclictest	1159453	-21	kworker/u8:0+flush-8:0	19:51:56	1
1196740	99	36	30,4	cyclictest	1191718	-21	kworker/u8:1+events_unbound	20:56:47	1
1196740	99	36	30,4	cyclictest	1051571	-21	kworker/u8:4+events_unbound	20:01:45	1
1196740	99	36	29,5	cyclictest	1332502	-21	kworker/u8:2+flush-8:0	21:57:00	1
1196740	99	36	29,5	cyclictest	1267992	-21	latency_hist	20:20:01	1
1196740	99	35	30,3	cyclictest	1201673	-21	systemd-run	19:15:00	1
1196740	99	35	26,7	cyclictest	1218959	-21	/usr/sbin/munin	19:31:51	1
1196740	99	35	26,6	cyclictest	280	-21	systemd-journal	23:38:42	1
1196740	99	34	29,4	cyclictest	1495842	-21	kworker/u8:1+events_unbound	00:26:47	1
1196740	99	34	29,4	cyclictest	1495842	-21	kworker/u8:1+events_unbound	00:26:47	1
1196740	99	34	29,3	cyclictest	1312736	-21	kworker/u8:0+flush-8:0	21:21:58	1
1196740	99	34	29,3	cyclictest	1191718	-21	kworker/u8:1+events_unbound	21:26:46	1
1196740	99	34	28,4	cyclictest	1332502	-21	kworker/u8:2+flush-8:0	21:51:43	1
1196740	99	34	28,4	cyclictest	1159453	-21	kworker/u8:0+events_unbound	19:16:39	1
1196740	99	34	20,5	cyclictest	1270910	-21	kworker/u8:0+flush-8:0	20:21:54	1
1196740	99	33	28,3	cyclictest	1191718	-21	kworker/u8:1+events_unbound	21:01:48	1
1196740	99	33	27,5	cyclictest	1466381	-21	kworker/u8:0+flush-8:0	23:41:57	1
1196740	99	33	27,4	cyclictest	1416514	-21	kworker/u8:2+events_unbound	22:56:43	1
1196740	99	33	27,4	cyclictest	1416514	-21	kworker/u8:2+events_unbound	22:56:43	1
1196740	99	33	27,4	cyclictest	1376743	-21	kworker/u8:0+events_unbound	23:21:46	1
1196740	99	33	27,4	cyclictest	1191718	-21	kworker/u8:1+events_unbound	20:41:44	1
1196740	99	33	26,5	cyclictest	1387119	-21	kworker/u8:1+events_unbound	23:06:43	1
1196740	99	33	26,5	cyclictest	1051571	-21	kworker/u8:4+flush-8:0	19:37:01	1
1196740	99	33	23,7	cyclictest	280	-21	systemd-journal	22:47:41	1
1196740	99	33	19,11	cyclictest	280	-21	systemd-journal	22:35:00	1
1196736	99	33	27,4	cyclictest	1485947	-21	kworker/u8:2+events_unbound	00:40:01	0
1196736	99	33	26,5	cyclictest	1191718	-21	kworker/u8:1+flush-8:0	19:46:44	0
1196740	99	32	22,8	cyclictest	1313134	-21	diskstats	21:06:45	1
1196736	99	32	22,8	cyclictest	1480150	-21	ntpq	23:51:51	0
1196736	99	31	24,5	cyclictest	1397133	-21	/usr/sbin/munin	22:31:50	0
1196736	99	31	23,6	cyclictest	1297369	-21	grep	20:46:59	0
1196740	99	30	25,4	cyclictest	1191718	-21	kworker/u8:1+events_unbound	19:41:48	1
1196551	2	30	4,9	sleep2	0	-21	swapper/2	19:09:55	2
1196742	99	29	25,2	cyclictest	1204030	-21	aten2_r5power_p	19:16:40	2
1196742	99	29	19,8	cyclictest	1421559	-21	cat	22:55:00	2
1196740	99	29	23,4	cyclictest	1159453	-21	kworker/u8:0+events_unbound	19:26:45	1
1196740	99	29	22,5	cyclictest	1376743	-21	kworker/u8:0+events_unbound	22:21:51	1
1196740	99	29	21,6	cyclictest	1332502	-21	kworker/u8:2+flush-8:0	21:36:44	1
1196740	99	29	21,6	cyclictest	1332502	-21	kworker/u8:2+flush-8:0	21:36:44	1
1196736	99	29	25,3	cyclictest	1460033	-21	needreboot	23:31:50	0
1396161	2	28	0,4	sleep1	0	-21	swapper/1	22:26:57	1
1196742	99	28	23,3	cyclictest	1445817	-21	unixbench_singl	23:16:59	2
1196742	99	28	2,14	cyclictest	1382308	-21	apt-get	22:16:42	2
1196740	99	28	23,3	cyclictest	1209146	-21	cut	19:21:45	1
1196740	99	28	23,3	cyclictest	0	-21	swapper/1	23:05:01	1
1196736	99	28	19,7	cyclictest	1445317	-21	ntpq	23:16:53	0
1196742	99	27	24,2	cyclictest	1224210	-21	fschecks_count	19:36:45	2
1196742	99	27	23,3	cyclictest	1347351	-21	idleruntime-cro	21:40:00	2
1196742	99	27	23,3	cyclictest	1347351	-21	idleruntime-cro	21:40:00	2
1196742	99	27	0,10	cyclictest	39	-21	ksoftirqd/2	00:06:46	2
1196740	99	27	22,3	cyclictest	1521679	-21	grep	00:36:47	1
1196736	99	27	23,3	cyclictest	1475184	-21	needreboot	23:46:52	0
1196736	99	27	23,3	cyclictest	1312736	-21	kworker/u8:0+flush-8:0	21:21:56	0
1196736	99	27	23,2	cyclictest	1243346	-21	systemd-run	19:55:00	0
1196736	99	27	21,4	cyclictest	1263050	-21	kworker/u8:2+flush-8:0	20:36:45	0
1196736	99	27	20,5	cyclictest	280	-21	systemd-journal	00:29:38	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2019-05-28 - 00:17