OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, slot #7

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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack2slot7s.osadl.org (updated Fri Apr 10, 2026 00:43:23)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1286957	99	59	39,16	cyclictest	695	-21	cron	22:15:01	2
1286957	99	56	31,21	cyclictest	0	-21	swapper/2	20:40:01	2
1286957	99	56	2,28	cyclictest	1470694	-21	ssh	00:10:43	2
1286956	99	54	46,5	cyclictest	1359744	-21	systemd-run	21:55:01	1
1286956	99	54	45,5	cyclictest	1331091	-21	sendmail	21:20:01	1
1286957	99	53	26,23	cyclictest	1466077	-21	fschecks_time	00:05:27	2
1286955	99	52	37,12	cyclictest	1461257	-21	awk	00:00:00	0
1286957	99	51	23,3	cyclictest	0	-21	swapper/2	00:20:01	2
1286957	99	50	40,7	cyclictest	1322931	-21	diskmemload	21:15:36	2
1286957	99	50	27,20	cyclictest	1363791	-21	idleruntime-cro	22:00:01	2
1286955	99	49	7,31	cyclictest	1351319	-21	sh	21:44:32	0
1286955	99	49	7,31	cyclictest	1351319	-21	sh	21:44:32	0
1286957	99	48	2,22	cyclictest	1324265	-21	ssh	21:10:41	2
1286956	99	48	30,12	cyclictest	1377139	-21	sh	22:15:34	1
1286956	99	48	30,12	cyclictest	1377139	-21	sh	22:15:34	1
1286955	99	48	3,39	cyclictest	659	-21	snmpd	22:45:44	0
1286957	99	47	3,20	cyclictest	1478724	-21	ssh	00:20:37	2
1286957	99	47	22,2	cyclictest	0	-21	swapper/2	00:00:00	2
1286957	99	47	20,5	cyclictest	1404538	-21	sh	22:50:02	2
1286957	99	46	6,13	cyclictest	1385310	-21	ssh	22:25:37	2
1286957	99	46	24,5	cyclictest	0	-21	swapper/2	00:30:01	2
1286957	99	46	23,3	cyclictest	0	-21	swapper/2	21:20:47	2
1286956	99	46	38,5	cyclictest	1313932	-21	run-parts	20:40:01	1
1286955	99	46	8,21	cyclictest	1492757	-21	sh	00:38:05	0
1286955	99	46	7,28	cyclictest	1355395	-21	ssh	21:49:36	0
1286955	99	46	26,15	cyclictest	0	-21	swapper/0	23:05:01	0
1286955	99	46	2,27	cyclictest	1056	-21	mta-sts-daemon	23:51:29	0
1286957	99	45	5,12	cyclictest	1450293	-21	ssh	23:45:38	2
1286957	99	45	4,18	cyclictest	1425849	-21	ssh	23:15:37	2
1286957	99	45	1,22	cyclictest	1348669	-21	ssh	21:40:35	2
1286957	99	45	1,22	cyclictest	1348669	-21	ssh	21:40:35	2
1286957	99	45	1,20	cyclictest	1454279	-21	ssh	23:50:35	2
1286956	99	45	36,6	cyclictest	0	-21	swapper/1	19:55:33	1
1286956	99	45	36,5	cyclictest	1388673	-21	aten_r2power_en	22:30:23	1
1286955	99	45	8,35	cyclictest	1387642	-21	ssh	22:29:00	0
1286955	99	45	38,4	cyclictest	15	1	ktimers/0	21:00:35	0
1286955	99	45	25,10	cyclictest	123	50	irq/32-eth0	22:05:34	0
1286955	99	45	21,21	cyclictest	1409896	-21	systemctl	22:55:41	0
1286955	99	45	1,25	cyclictest	1377923	-21	ssh	22:15:54	0
1286955	99	45	1,25	cyclictest	1377923	-21	ssh	22:15:54	0
1286955	99	45	0,43	cyclictest	1358977	-21	ssh	21:53:36	0
1286957	99	44	36,5	cyclictest	1491425	-21	sh	00:35:44	2
1286957	99	44	25,16	cyclictest	0	-21	swapper/2	22:50:27	2
1286956	99	44	7,27	cyclictest	1381279	-21	ssh	22:20:36	1
1286956	99	44	3,33	cyclictest	1348611	-21	ssh	21:40:33	1
1286956	99	44	3,33	cyclictest	1348611	-21	ssh	21:40:33	1
1286956	99	43	35,5	cyclictest	1343325	-21	ssh	21:35:01	1
1286956	99	43	34,6	cyclictest	1376039	-21	systemd	22:15:02	1
1286955	99	43	6,35	cyclictest	1476716	-21	ssh	00:18:32	0
1286955	99	43	36,4	cyclictest	1322934	-21	munin-run	21:10:00	0
1286955	99	43	2,35	cyclictest	1450162	-21	ntpq	23:45:33	0
1286955	99	43	18,22	cyclictest	0	-21	swapper/0	00:35:01	0
1286955	99	43	1,26	cyclictest	1463246	-21	ssh	00:01:04	0
1286957	99	42	36,3	cyclictest	0	-21	swapper/2	00:30:40	2
1286957	99	42	31,7	cyclictest	1444948	-21	ssh	23:40:01	2
1286955	99	42	6,34	cyclictest	1338944	-21	ssh	21:29:27	0
1286955	99	42	4,36	cyclictest	1434673	-21	ssh	23:25:54	0
1286955	99	42	35,4	cyclictest	15	1	ktimers/0	19:45:37	0
1286955	99	42	1,38	cyclictest	1342696	-21	ssh	21:33:50	0
1286955	99	42	1,36	cyclictest	1425906	-21	ntpq	23:15:40	0
1286955	99	42	0,30	cyclictest	1325334	-21	ssh	21:11:49	0
1286956	99	41	33,5	cyclictest	1312504	-21	latency_hist	20:35:02	1
1286956	99	41	32,4	cyclictest	0	-21	swapper/1	00:20:38	1
1286956	99	41	31,6	cyclictest	420	-21	avahi-daemon	23:33:40	1
1286956	99	41	2,30	cyclictest	1486773	-21	ssh	00:30:33	1
1286955	99	41	4,23	cyclictest	1390411	-21	diskmemload	22:31:31	0
1286955	99	41	35,3	cyclictest	0	-21	swapper/0	21:20:01	0
1286955	99	41	3,36	cyclictest	1375074	-21	ssh	22:13:16	0
1286955	99	41	33,5	cyclictest	1294456	-21	kworker/u8:7-xprtiod	19:45:01	0
1286955	99	41	1,38	cyclictest	1480826	-21	ssh	00:23:34	0
1286955	99	41	1,38	cyclictest	1407564	-21	ssh	22:53:19	0
1286955	99	41	1,37	cyclictest	1447915	-21	sh	23:42:54	0
1286955	99	41	1,37	cyclictest	1442330	-21	ssh	23:35:42	0
1286955	99	41	1,36	cyclictest	1313319	-21	ntpq	20:35:34	0
1286955	99	41	1,35	cyclictest	1316297	-21	ntpq	20:45:33	0
1286957	99	40	34,3	cyclictest	0	-21	swapper/2	22:15:40	2
1286957	99	40	34,3	cyclictest	0	-21	swapper/2	22:15:40	2
1286957	99	40	3,31	cyclictest	1417753	-21	ssh	23:05:36	2
1286957	99	40	3,31	cyclictest	1417753	-21	ssh	23:05:36	2
1286957	99	40	32,5	cyclictest	1306453	-21	systemd-run	20:15:01	2
1286957	99	40	15,17	cyclictest	421	-21	dbus-daemon	21:30:35	2
1286956	99	40	31,6	cyclictest	1369015	-21	ntp_kernel_err	22:05:33	1
1286956	99	40	31,5	cyclictest	0	-21	swapper/1	19:15:36	1
1286956	99	40	29,8	cyclictest	1473848	-21	/usr/sbin/munin	00:15:26	1
1286956	99	40	28,8	cyclictest	1055	-21	mta-sts-daemon	23:20:34	1
1286955	99	40	3,33	cyclictest	1290867	-21	ntpq	19:20:36	0
1286955	99	40	2,34	cyclictest	1305824	-21	ntpq	20:10:33	0
1286955	99	40	2,34	cyclictest	1292350	-21	ntpq	19:25:34	0
1286955	99	40	2,34	cyclictest	1292350	-21	ntpq	19:25:34	0
1286955	99	40	2,33	cyclictest	1307410	-21	ntpq	20:15:39	0
1286955	99	40	1,36	cyclictest	1295325	-21	ntpq	19:35:34	0
1286955	99	40	1,34	cyclictest	1393505	-21	ntpq	22:35:38	0
1286955	99	40	1,34	cyclictest	1310399	-21	ntpq	20:25:38	0
1286955	99	40	0,38	cyclictest	1430768	-21	ssh	23:21:11	0
1286955	99	40	0,37	cyclictest	1334966	-21	ssh	21:24:39	0
1286955	99	40	0,30	cyclictest	1420044	-21	ssh	23:08:57	0
1286955	99	40	0,30	cyclictest	1420044	-21	ssh	23:08:57	0
1286957	99	39	30,5	cyclictest	1437010	-21	latency_hist	23:30:02	2
1286957	99	39	27,9	cyclictest	1298253	-21	needreboot	19:45:32	2
1286956	99	39	31,4	cyclictest	1310922	-21	kworker/u8:5+rpciod	20:30:01	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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