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 Thu Jun 12, 2025 12:44:41)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1183923	2	241	187,19	sleep1	0	-21	swapper/1	07:06:35	1
1184165	2	239	183,44	sleep0	0	-21	swapper/0	07:09:37	0
1184033	2	229	200,19	sleep2	0	-21	swapper/2	07:08:02	2
1183920	2	219	190,19	sleep3	0	-21	swapper/3	07:06:34	3
1184324	99	71	27,41	cyclictest	1371325	-21	/usr/share/muni	10:45:01	1
1184324	99	66	61,3	cyclictest	1319502	-21	latency_hist	09:45:01	1
1184327	99	57	52,3	cyclictest	1280500	-21	kworker/u8:3+events_unbound	09:50:10	2
1184320	99	56	50,4	cyclictest	1210497	-21	latency_hist	07:40:01	0
1184320	99	54	48,3	cyclictest	1379596	-21	kworker/u8:0+flush-179:0	11:00:05	0
1184320	99	53	48,4	cyclictest	1358197	-21	latency_hist	10:30:00	0
1184320	99	52	49,2	cyclictest	1266879	-13	chrome	08:45:01	0
1184330	99	51	48,2	cyclictest	1396131	-21	kworker/u8:0+flush-179:0	11:25:10	3
1184330	99	51	48,2	cyclictest	1280500	-21	kworker/u8:3+flush-179:0	09:04:56	3
1184327	99	51	48,2	cyclictest	1422328	-21	kworker/u8:3+flush-179:0	12:30:05	2
1184320	99	51	48,2	cyclictest	1344949	-21	kworker/u8:2+flush-179:0	10:45:08	0
1184327	99	50	47,2	cyclictest	1344949	-21	kworker/u8:2+events_unbound	11:40:00	2
1184327	99	50	47,2	cyclictest	1188555	-21	kworker/u8:0+events_unbound	07:40:09	2
1184327	99	50	3,44	cyclictest	1371293	-21	chrome	10:45:01	2
1184330	99	49	6,40	cyclictest	1371262	-13	chrome	10:45:01	3
1184330	99	49	46,2	cyclictest	1388306	-21	kworker/u8:3+events_unbound	11:10:08	3
1184330	99	48	44,3	cyclictest	1292041	-21	kworker/u8:0+events_unbound	09:30:00	3
1184330	99	48	44,3	cyclictest	1280500	-21	kworker/u8:3+events_unbound	10:10:08	3
1184327	99	48	45,2	cyclictest	1401917	-21	kworker/u8:3+flush-179:0	11:30:05	2
1184320	99	48	45,2	cyclictest	1195371	-21	kworker/u8:1+flush-179:0	07:25:06	0
1184320	99	48	44,3	cyclictest	1413878	-21	kworker/u8:1+flush-179:0	12:00:15	0
1184320	99	48	44,3	cyclictest	1280500	-21	kworker/u8:3+events_unbound	09:05:00	0
1184327	99	47	44,2	cyclictest	1275419	-21	kworker/u8:2+flush-179:0	09:30:04	2
1184327	99	47	33,13	cyclictest	1251261	-21	apt-get	08:25:12	2
1184320	99	47	44,2	cyclictest	1357958	-21	kworker/u8:0+events_unbound	10:30:15	0
1184327	99	46	42,3	cyclictest	1188555	-21	kworker/u8:0+events_unbound	07:35:09	2
1306564	2	45	0,1	chrt	1306553	-21	snmp_areswitch.	09:30:01	3
1184320	99	45	41,3	cyclictest	1249036	-21	kworker/u8:2+flush-179:0	08:30:05	0
1184330	99	44	40,3	cyclictest	1227380	-21	kworker/u8:1+events_unbound	08:05:08	3
1184330	99	44	39,2	cyclictest	1337599	-21	kworker/u8:0+events_unbound	10:05:09	3
1184330	99	44	38,2	cyclictest	1124202	-21	kworker/u8:2+events_unbound	07:55:05	3
1184327	99	44	40,3	cyclictest	1344949	-21	kworker/u8:2+events_unbound	10:30:25	2
1184327	99	44	38,2	cyclictest	1383902	-21	kworker/u8:1+flush-179:0	11:05:15	2
1184330	99	43	40,2	cyclictest	1388306	-21	kworker/u8:3+flush-179:0	11:05:26	3
1184330	99	43	40,2	cyclictest	1249036	-21	kworker/u8:2+events_unbound	08:40:09	3
1184330	99	43	40,2	cyclictest	1249036	-21	kworker/u8:2+events_unbound	08:40:09	3
1184330	99	43	39,3	cyclictest	1124202	-21	kworker/u8:2+events_unbound	07:50:09	3
1184324	99	43	38,4	cyclictest	1347446	-21	apt-get	10:15:14	1
1184320	99	43	38,4	cyclictest	1253298	-21	kworker/u8:0+flush-179:0	08:50:09	0
1184330	99	42	39,2	cyclictest	1344949	-21	kworker/u8:2+events_unbound	12:40:01	3
1184330	99	42	39,2	cyclictest	1218828	-21	kworker/u8:3+events_unbound	08:00:10	3
1184327	99	42	39,2	cyclictest	1422328	-21	kworker/u8:3+events_unbound	11:51:01	2
1184327	99	42	39,2	cyclictest	1253298	-21	kworker/u8:0+events_unbound	08:55:28	2
1184324	99	42	30,1	cyclictest	1214781	-21	munin-update	07:45:01	1
1184320	99	42	37,2	cyclictest	1275419	-21	kworker/u8:2+events_unbound	09:05:08	0
1184320	99	42	36,2	cyclictest	1275419	-21	kworker/u8:2+flush-179:0	09:35:16	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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