OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #e, slot #6

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 rackeslot6.osadl.org (updated Fri May 02, 2025 00:44:51)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1247310	99	133	118,12	cyclictest	1340790	-40	mandb	00:00:00	1
1247310	99	122	116,4	cyclictest	1265019	-21	kworker/u8:2+flush-179:0	20:10:24	1
1247310	99	122	115,4	cyclictest	1334127	-21	kworker/u8:2+events_unbound	23:40:01	1
1247309	99	116	102,11	cyclictest	1261667	-21	gpgv	19:55:00	0
1247309	99	111	102,7	cyclictest	1250397	-21	kworker/u8:0+flush-179:0	19:20:21	0
1247309	99	111	102,7	cyclictest	1250397	-21	kworker/u8:0+flush-179:0	19:20:20	0
1247309	99	110	102,6	cyclictest	1337573	-21	kworker/u8:0+events_unbound	00:04:00	0
1247309	99	108	96,9	cyclictest	1284334	-21	latency_hist	21:05:00	0
1247310	99	107	98,6	cyclictest	1289342	-21	kworker/u8:3+events_unbound	22:10:14	1
1247309	99	107	98,7	cyclictest	1284831	-21	kworker/u8:1+flush-179:0	21:20:27	0
1247309	99	106	97,7	cyclictest	1289342	-21	kworker/u8:3+events_unbound	21:50:02	0
1247309	99	106	95,9	cyclictest	1340790	-40	mandb	00:00:01	0
1247310	99	104	93,8	cyclictest	1316661	-21	latency_hist	22:45:01	1
1247309	99	104	94,7	cyclictest	1257044	-21	apt-get	19:40:20	0
1247309	99	103	91,9	cyclictest	1326188	-21	latency_hist	23:15:00	0
1247310	99	102	92,7	cyclictest	1334192	-21	http	23:40:01	1
1247310	99	102	91,8	cyclictest	1258611	-21	/usr/sbin/munin	19:45:28	1
1247310	99	101	95,4	cyclictest	1284831	-21	kworker/u8:1+events_unbound	21:30:20	1
1247310	99	101	93,5	cyclictest	1289342	-21	kworker/u8:3+events_unbound	21:25:19	1
1247309	99	101	88,10	cyclictest	1275040	-21	apt-get	20:35:12	0
1247309	99	99	90,7	cyclictest	1337848	-21	apt-get	23:50:15	0
1247309	99	99	87,4	cyclictest	1279579	-21	kworker/u8:2+events_unbound	20:50:18	0
1247309	99	98	90,5	cyclictest	1321402	-21	kworker/u8:1+flush-179:0	23:30:23	0
1247310	99	97	89,7	cyclictest	1310333	-21	kworker/u8:2+events_unbound	22:45:21	1
1247310	99	97	89,5	cyclictest	1284831	-21	kworker/u8:1+events_unbound	21:20:20	1
1247309	99	97	89,6	cyclictest	1255162	-21	kworker/u8:0+events_unbound	19:55:02	0
1247310	99	96	89,5	cyclictest	1321402	-21	kworker/u8:1+events_unbound	23:10:00	1
1247309	99	96	88,6	cyclictest	1321402	-21	kworker/u8:1+flush-179:0	23:40:22	0
1247310	99	95	82,4	cyclictest	1245747	-21	kworker/u8:3+events_unbound	19:10:22	1
1247309	99	95	88,5	cyclictest	1344051	-21	kworker/u8:1+flush-179:0	00:15:01	0
1247309	99	95	86,7	cyclictest	1289342	-21	kworker/u8:3+events_unbound	21:40:18	0
1247310	99	94	87,4	cyclictest	1310333	-21	kworker/u8:2+events_unbound	22:35:14	1
1247310	99	94	87,4	cyclictest	1310333	-21	kworker/u8:2+events_unbound	22:35:14	1
1247310	99	93	79,5	cyclictest	1255162	-21	kworker/u8:0+flush-179:0	19:55:24	1
1247309	99	93	83,8	cyclictest	1302318	-21	kworker/u8:2+events_unbound	22:05:24	0
1247310	99	91	81,7	cyclictest	1310333	-21	kworker/u8:2+events_unbound	22:30:22	1
1247309	99	91	78,10	cyclictest	1292798	-21	apt-get	21:30:17	0
1247310	99	90	82,6	cyclictest	1340839	-21	kworker/u8:2+events_unbound	00:15:15	1
1247310	99	90	82,6	cyclictest	1307131	-21	kworker/u8:0+events_unbound	22:25:17	1
1247310	99	89	79,8	cyclictest	1270285	-21	apt-get	20:20:15	1
1247309	99	89	82,6	cyclictest	1292527	-21	kworker/u8:0+flush-179:0	22:00:00	0
1247309	99	89	76,4	cyclictest	1268183	-21	kworker/u8:4+flush-179:0	20:15:24	0
1247310	99	88	82,4	cyclictest	1345617	-21	kworker/u8:4+flush-179:0	00:25:22	1
1247310	99	88	77,3	cyclictest	1255162	-21	kworker/u8:0+flush-179:0	19:35:15	1
1247310	99	87	81,4	cyclictest	1286417	-21	kworker/u8:0+flush-179:0	21:10:25	1
1247309	99	87	82,3	cyclictest	1334127	-21	kworker/u8:2+events_unbound	23:45:23	0
1247309	99	87	80,5	cyclictest	1287227	-21	kworker/u8:2+flush-179:0	21:15:21	0
1247309	99	86	74,9	cyclictest	1294385	-21	apt-get	21:35:15	0
1247310	99	85	77,5	cyclictest	1350696	-21	store	00:30:01	1
1247310	99	85	77,5	cyclictest	1265019	-21	kworker/u8:2+flush-179:0	20:25:24	1
1247309	99	85	78,4	cyclictest	1350691	-21	gpgv	00:30:02	0
1247309	99	85	77,5	cyclictest	1271647	-21	kworker/u8:0+events_unbound	20:30:15	0
1247310	99	84	74,7	cyclictest	1284852	-21	apt-get	21:05:13	1
1247310	99	83	77,4	cyclictest	1316899	-21	kworker/u8:0+events_unbound	22:50:22	1
1247310	99	83	77,3	cyclictest	1321402	-21	kworker/u8:1+flush-179:0	23:15:23	1
1247310	99	83	76,5	cyclictest	1276434	-21	kworker/u8:3+flush-179:0	20:40:22	1
1247309	99	83	74,6	cyclictest	1310333	-21	kworker/u8:2+events_unbound	22:40:20	0
1247309	99	83	70,5	cyclictest	1337573	-21	kworker/u8:0+events_unbound	00:10:00	0
1247309	99	83	70,4	cyclictest	1253512	-21	kworker/u8:2+events_unbound	19:30:21	0
1247310	99	82	76,5	cyclictest	1332538	-21	kworker/u8:0+events_unbound	23:35:01	1
1247310	99	82	76,4	cyclictest	1264969	-21	kworker/u8:1+flush-179:0	20:10:01	1
1247310	99	82	75,5	cyclictest	1310333	-21	kworker/u8:2+flush-179:0	23:00:23	1
1247310	99	82	75,4	cyclictest	1321402	-21	kworker/u8:1+flush-179:0	23:10:22	1
1247310	99	82	71,9	cyclictest	1298908	-21	apt-get	21:50:00	1
1247310	99	81	76,4	cyclictest	1321402	-21	kworker/u8:1+events_unbound	23:29:59	1
1247309	99	81	72,6	cyclictest	1310333	-21	kworker/u8:2+flush-179:0	22:35:21	0
1247309	99	81	72,6	cyclictest	1310333	-21	kworker/u8:2+flush-179:0	22:35:21	0
1247310	99	80	74,4	cyclictest	1268183	-21	kworker/u8:4+events_unbound	20:15:17	1
1247309	99	80	74,5	cyclictest	1302318	-21	kworker/u8:2+flush-179:0	22:05:01	0
1247309	99	80	72,6	cyclictest	1244848	-21	kworker/u8:1+flush-179:0	19:15:22	0
1247310	99	79	72,6	cyclictest	1282167	-21	kworker/u8:1+events_unbound	20:55:26	1
1247310	99	79	70,6	cyclictest	1252267	-21	apt-get	19:25:12	1
1247309	99	79	74,3	cyclictest	1264969	-21	kworker/u8:1+events_unbound	20:05:24	0
1247310	99	78	73,3	cyclictest	1347436	-21	kworker/u8:0+flush-179:0	00:20:24	1
1247310	99	78	66,9	cyclictest	1301002	-21	apt-get	21:55:13	1
1247310	99	77	66,8	cyclictest	1342680	-21	apt-get	00:05:13	1
1247309	99	77	71,5	cyclictest	1284831	-21	kworker/u8:1+flush-179:0	21:05:18	0
1247309	99	77	68,7	cyclictest	1347436	-21	kworker/u8:0+events_unbound	00:30:01	0
1247309	99	77	64,10	cyclictest	1308970	-21	apt-get	22:20:13	0
1247309	99	76	70,5	cyclictest	1310333	-21	kworker/u8:2+events_unbound	22:45:25	0
1247310	99	75	70,4	cyclictest	1289342	-21	kworker/u8:3+flush-179:0	21:50:20	1
1247310	99	75	69,4	cyclictest	1271647	-21	kworker/u8:0+flush-179:0	20:45:25	1
1247310	99	75	64,4	cyclictest	1340839	-21	kworker/u8:2+events_unbound	00:00:24	1
1247309	99	75	69,4	cyclictest	1244848	-21	kworker/u8:1+flush-179:0	19:25:21	0
1247310	99	74	69,4	cyclictest	1334214	-21	kworker/u8:3+flush-179:0	23:50:28	1
1247309	99	73	68,3	cyclictest	19	1	rcuc/0	23:30:00	0
1247309	99	73	67,4	cyclictest	1310333	-21	kworker/u8:2+flush-179:0	23:20:23	0
1247309	99	73	59,5	cyclictest	1289342	-21	kworker/u8:3+flush-179:0	22:10:23	0
1247310	99	72	68,3	cyclictest	1255162	-21	kworker/u8:0+events_unbound	19:40:22	1
1247310	99	72	66,4	cyclictest	1340839	-21	kworker/u8:2+flush-179:0	00:10:21	1
1247310	99	72	66,4	cyclictest	1334214	-21	kworker/u8:3+events_unbound	23:45:28	1
1247309	99	72	66,4	cyclictest	1271647	-21	kworker/u8:0+flush-179:0	20:40:28	0
1247309	99	72	65,6	cyclictest	1310333	-21	kworker/u8:2+flush-179:0	22:55:26	0
1247310	99	71	65,4	cyclictest	1348832	-21	kworker/u8:1+flush-179:0	00:35:14	1
1247309	99	71	66,4	cyclictest	1255162	-21	kworker/u8:0+events_unbound	19:50:01	0
1247309	99	71	59,9	cyclictest	1291214	-21	apt-get	21:25:15	0
1247316	99	70	63,5	cyclictest	1282736	-21	turbostat	21:00:00	3
1247309	99	70	57,10	cyclictest	1298901	-21	latency_hist	21:50:01	0
1247309	99	70	56,6	cyclictest	1255162	-21	kworker/u8:0+events_unbound	20:00:26	0
1247309	99	68	59,7	cyclictest	1287766	-21	latency_hist	21:15:01	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2020-10-04 - 12:21