OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #b, slot #2

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: performance
Compare latency of primary with shadow system

Characteristics of the 50 highest latencies:

System rackbslot2.osadl.org (updated Tue Jul 15, 2025 12:44:40)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1155923	2	239	209,19	sleep2	0	-21	swapper/2	07:07:08	2
1155956	2	234	184,40	sleep0	0	-21	swapper/0	07:07:33	0
1155770	2	228	199,19	sleep1	0	-21	swapper/1	07:05:38	1
1156072	2	220	192,19	sleep3	0	-21	swapper/3	07:09:02	3
1156342	99	89	0,55	cyclictest	1187102	-13	chrome	07:45:01	3
1156333	99	66	59,3	cyclictest	1325619	-21	kworker/u8:0+events_unbound	10:55:14	0
1156336	99	57	54,2	cyclictest	1191185	-21	kworker/u8:1+events_unbound	08:20:15	1
1156333	99	57	54,1	cyclictest	1187320	-21	apt-config	07:45:01	0
1156333	99	54	50,3	cyclictest	1191185	-21	kworker/u8:1+events_unbound	08:39:59	0
1156342	99	53	48,4	cyclictest	1112561	-21	kworker/u8:2+events_unbound	07:25:13	3
1156333	99	53	49,3	cyclictest	1173921	-21	kworker/u8:0+events_unbound	08:00:01	0
1156336	99	52	51,0	cyclictest	1422904	-21	awk	12:15:16	1
1156339	99	51	33,3	cyclictest	1372271	-21	kworker/u8:2+flush-179:0	11:36:05	2
1156342	99	47	44,2	cyclictest	1173921	-21	kworker/u8:0+events_unbound	08:15:24	3
1156336	99	46	43,2	cyclictest	1105073	-21	kworker/u8:1+events_unbound	07:10:15	1
1156333	99	46	43,2	cyclictest	1302084	-21	kworker/u8:3+flush-179:0	10:25:07	0
1156333	99	46	42,3	cyclictest	1349970	-21	apt-get	10:50:15	0
1156342	99	45	41,3	cyclictest	1281787	-21	kworker/u8:4+events_unbound	10:05:06	3
1156342	99	45	41,3	cyclictest	1200445	-21	/usr/share/muni	08:00:06	3
1156333	99	45	41,3	cyclictest	1364703	-21	kworker/u8:1+events_unbound	11:15:14	0
1156342	99	44	42,2	cyclictest	1204386	-21	kworker/u8:3+flush-179:0	09:10:24	3
1156342	99	44	41,2	cyclictest	1381400	-21	kworker/u8:0+events_unbound	12:30:05	3
1156336	99	44	41,2	cyclictest	1191185	-21	kworker/u8:1+flush-179:0	08:30:25	1
1156336	99	44	39,4	cyclictest	1267168	-21	ntpq	09:15:14	1
1156333	99	44	40,3	cyclictest	1236289	-21	kworker/u8:2+events_unbound	08:40:13	0
1156342	99	43	43,0	cyclictest	64742	-21	isc-net-0000	07:32:13	3
1156342	99	43	40,2	cyclictest	1252063	-21	kworker/u8:1+events_unbound	09:10:00	3
1156342	99	43	40,2	cyclictest	1155762	-21	kworker/u8:3+flush-179:0	07:50:09	3
1156342	99	43	39,3	cyclictest	1277701	-21	kworker/u8:0+events_unbound	10:00:14	3
1156336	99	43	40,2	cyclictest	1410172	-21	kworker/u8:1+events_unbound	12:05:24	1
1156333	99	43	40,2	cyclictest	1390365	-21	kworker/u8:1+flush-179:0	11:45:10	0
1156333	99	43	40,2	cyclictest	1381400	-21	kworker/u8:0+events_unbound	11:55:13	0
1156336	99	42	40,2	cyclictest	1155762	-21	kworker/u8:3+flush-179:0	07:20:26	1
1156336	99	42	40,2	cyclictest	1155762	-21	kworker/u8:3+flush-179:0	07:20:26	1
1156336	99	42	29,12	cyclictest	1116813	-1	kworker/1:0H+kblockd	11:22:01	1
1156333	99	42	39,2	cyclictest	1277701	-21	kworker/u8:0+flush-179:0	09:35:27	0
1156333	99	42	38,3	cyclictest	1257017	-21	kworker/u8:0+flush-179:0	09:10:10	0
1156333	99	42	38,3	cyclictest	1112561	-21	kworker/u8:2+events_unbound	07:40:16	0
1156342	99	41	37,3	cyclictest	1155762	-21	kworker/u8:3+flush-179:0	07:20:16	3
1156342	99	41	37,3	cyclictest	1155762	-21	kworker/u8:3+flush-179:0	07:20:16	3
1156339	99	41	37,3	cyclictest	1312089	-21	kworker/2:0+pm	11:30:10	2
1156339	99	41	35,4	cyclictest	1369063	-21	/usr/share/muni	11:15:05	2
1156339	99	41	0,40	cyclictest	1343470	-21	/usr/share/muni	10:45:01	2
1156336	99	41	39,2	cyclictest	1403025	-21	kworker/u8:3+events_unbound	12:25:14	1
1156336	99	41	39,2	cyclictest	1325619	-21	kworker/u8:0+events_unbound	11:10:15	1
1156336	99	41	38,2	cyclictest	1381400	-21	kworker/u8:0+events_unbound	11:55:07	1
1156333	99	41	37,3	cyclictest	1410172	-21	kworker/u8:1+events_unbound	12:05:13	0
1156333	99	41	37,3	cyclictest	1385764	-21	kworker/u8:3+flush-179:0	11:40:25	0
1156333	99	41	35,5	cyclictest	1170969	-21	apt-get	07:25:07	0
1156342	99	40	37,2	cyclictest	1401386	-21	cat	11:50:15	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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