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 100 highest latencies:

System rackbslot2.osadl.org (updated Tue Dec 23, 2025 12:44:43)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1506728	2	229	199,19	sleep3	0	-21	swapper/3	07:07:36	3
1506682	2	228	200,18	sleep2	0	-21	swapper/2	07:07:00	2
1506741	2	225	196,19	sleep0	0	-21	swapper/0	07:07:46	0
1506721	2	217	188,19	sleep1	0	-21	swapper/1	07:07:31	1
1507086	99	56	52,3	cyclictest	1741719	-21	/usr/share/muni	11:40:01	3
1507076	99	56	53,2	cyclictest	1641505	-21	chrome	09:45:01	0
1507084	99	54	46,2	cyclictest	1602365	-21	kworker/u8:3+events_unbound	09:50:02	2
1507086	99	50	45,3	cyclictest	1624396	-21	/usr/share/muni	09:25:02	3
1507084	99	50	47,2	cyclictest	1528831	-21	kworker/u8:1+flush-179:0	08:10:05	2
1507084	99	49	47,1	cyclictest	1745795	-21	munin-update	11:45:00	2
1507086	99	48	2,46	cyclictest	1441893	-21	kworker/u8:4+efi_rts_wq	07:13:35	3
1507084	99	47	43,3	cyclictest	1520417	-21	latency_hist	07:25:01	2
1507084	99	46	43,2	cyclictest	1537791	-21	chrome	07:45:02	2
1507084	99	46	42,3	cyclictest	1696102	-21	kworker/u8:3+flush-179:0	10:55:05	2
1507084	99	46	42,3	cyclictest	1675273	-21	kworker/u8:0+events_unbound	10:30:15	2
1507086	99	45	42,2	cyclictest	1658251	-21	kworker/u8:1+events_unbound	10:10:15	3
1507086	99	45	38,2	cyclictest	1714343	-21	kworker/u8:3+flush-179:0	11:10:08	3
1507086	99	44	39,4	cyclictest	1759065	-21	/usr/share/muni	12:00:13	3
1507086	99	44	39,2	cyclictest	1537741	-13	chrome	07:45:02	3
1507084	99	43	40,2	cyclictest	1749355	-21	kworker/u8:0+events_unbound	11:55:15	2
1507084	99	43	39,3	cyclictest	1528831	-21	kworker/u8:1+events_unbound	08:05:13	2
1507084	99	43	38,3	cyclictest	1730483	-21	cat	11:25:14	2
1507079	99	43	42,1	cyclictest	0	-21	swapper/1	08:35:14	1
1507079	99	43	42,1	cyclictest	0	-21	swapper/1	07:45:19	1
1507076	99	43	40,2	cyclictest	1743644	-21	kworker/u8:1+flush-179:0	11:45:07	0
1507076	99	43	30,11	cyclictest	1622953	-21	awk	09:20:17	0
1507084	99	42	41,1	cyclictest	1528958	-21	kworker/2:0+pm	08:46:18	2
1507084	99	42	39,2	cyclictest	2587331	-1	kworker/2:0H+kblockd	11:05:15	2
1507084	99	42	39,2	cyclictest	1632485	-21	kworker/u8:4+flush-179:0	09:35:06	2
1507084	99	42	38,3	cyclictest	1688237	-21	kworker/u8:2+events_unbound	10:50:13	2
1507086	99	41	39,2	cyclictest	1514382	-21	kworker/u8:0+events_unbound	08:25:15	3
1507086	99	41	38,2	cyclictest	1767319	-21	kworker/u8:3+events_unbound	12:25:12	3
1507086	99	41	38,2	cyclictest	1696102	-21	kworker/u8:3+flush-179:0	11:00:27	3
1507086	99	41	38,2	cyclictest	1696102	-21	kworker/u8:3+flush-179:0	11:00:27	3
1507084	99	41	38,2	cyclictest	1514382	-21	kworker/u8:0+flush-179:0	08:35:15	2
1507084	99	41	38,2	cyclictest	1479942	-21	kworker/2:2+pm	07:30:27	2
1507084	99	41	37,3	cyclictest	1645743	-21	kworker/u8:2+flush-179:0	09:50:26	2
1507084	99	41	37,3	cyclictest	1514382	-21	kworker/u8:0+events_unbound	08:55:15	2
1507076	99	41	36,3	cyclictest	0	-21	swapper/0	11:45:01	0
1507084	99	40	37,2	cyclictest	1528958	-21	kworker/2:0+pm	08:40:04	2
1507079	99	40	38,1	cyclictest	862735	-1	kworker/1:0H+kblockd	12:05:04	1
1507079	99	40	37,2	cyclictest	1441893	-21	kworker/u8:4+flush-179:0	07:10:12	1
1507079	99	40	36,3	cyclictest	1654486	-21	/usr/share/muni	10:00:15	1
1507076	99	40	36,3	cyclictest	1514382	-21	kworker/u8:0+events_unbound	07:30:01	0
1507086	99	39	37,2	cyclictest	1628468	-21	kworker/u8:1+events_unbound	09:40:15	3
1507086	99	39	34,3	cyclictest	1770922	-31	munin-html	12:10:27	3
1507086	99	39	32,5	cyclictest	1645823	-21	/usr/share/muni	09:50:01	3
1507084	99	39	37,1	cyclictest	1718496	-21	kworker/2:2+pm	12:10:58	2
1507084	99	39	37,1	cyclictest	1718496	-21	kworker/2:2+pm	12:05:49	2
1507084	99	39	37,1	cyclictest	1680400	-21	kworker/2:1+pm	11:01:11	2
1507084	99	39	37,1	cyclictest	1680400	-21	kworker/2:1+pm	11:01:11	2
1507084	99	39	37,1	cyclictest	1602538	-21	kworker/2:2+pm	09:05:16	2
1507084	99	39	37,1	cyclictest	1602538	-21	kworker/2:2+pm	09:01:47	2
1507084	99	39	37,1	cyclictest	1528958	-21	kworker/2:0+pm	08:31:21	2
1507084	99	39	37,1	cyclictest	1528958	-21	kworker/2:0+pm	08:15:26	2
1507084	99	39	37,1	cyclictest	1479942	-21	kworker/2:2+pm	07:10:30	2
1507084	99	39	36,2	cyclictest	1743644	-21	kworker/u8:1+events_unbound	12:20:15	2
1507084	99	39	36,2	cyclictest	1718496	-21	kworker/2:2+pm	11:35:17	2
1507084	99	39	36,2	cyclictest	1619929	-21	kworker/2:0+pm	09:20:04	2
1507084	99	39	36,2	cyclictest	1528958	-21	kworker/2:0+pm	08:50:04	2
1507084	99	39	36,1	cyclictest	1619929	-21	kworker/2:0+pm	09:30:38	2
1507079	99	39	35,3	cyclictest	1580817	-21	latency_hist	08:35:00	1
1507084	99	38	36,1	cyclictest	1718496	-21	kworker/2:2+pm	11:45:17	2
1507084	99	38	36,1	cyclictest	1718496	-21	kworker/2:2+pm	11:20:17	2
1507084	99	38	36,1	cyclictest	1658202	-21	kworker/2:2+pm	10:05:27	2
1507084	99	38	36,1	cyclictest	1528958	-21	kworker/2:0+pm	07:55:20	2
1507084	99	38	36,1	cyclictest	1528958	-21	kworker/2:0+pm	07:40:06	2
1507084	99	38	36,1	cyclictest	1479942	-21	kworker/2:2+pm	07:25:49	2
1507084	99	38	35,2	cyclictest	1658202	-21	kworker/2:2+pm	10:10:01	2
1507079	99	38	35,2	cyclictest	1723722	-21	kworker/1:2+pm	11:50:01	1
1507086	99	37	34,2	cyclictest	1602365	-21	kworker/u8:3+flush-179:0	09:10:06	3
1507086	99	37	34,2	cyclictest	1532814	-21	kworker/u8:4+events_unbound	08:30:10	3
1507086	99	37	34,2	cyclictest	1300659	-1	kworker/3:1H+kblockd	11:30:14	3
1507086	99	37	34,2	cyclictest	1300659	-1	kworker/3:1H+kblockd	10:47:14	3
1507086	99	37	34,2	cyclictest	1300659	-1	kworker/3:1H+kblockd	09:50:03	3
1507086	99	37	33,2	cyclictest	1300659	-1	kworker/3:1H+kblockd	10:25:01	3
1507084	99	37	35,1	cyclictest	1718496	-21	kworker/2:2+pm	11:50:37	2
1507084	99	37	35,1	cyclictest	1619929	-21	kworker/2:0+pm	09:25:04	2
1507084	99	37	35,1	cyclictest	1602538	-21	kworker/2:2+pm	09:15:56	2
1507084	99	37	35,1	cyclictest	1528958	-21	kworker/2:0+pm	08:02:01	2
1507084	99	37	0,3	cyclictest	1692325	-31	munin-graph	10:41:02	2
1507079	99	37	35,1	cyclictest	1524703	-21	kworker/1:1+pm	08:05:10	1
1507079	99	37	33,3	cyclictest	1602767	-21	latency_hist	09:00:01	1
1507076	99	37	33,3	cyclictest	1733901	-21	apt-get	11:30:07	0
1507076	99	37	32,4	cyclictest	1589644	-21	chrome	08:45:00	0
1507076	99	37	31,4	cyclictest	1701459	-21	latency_hist	10:55:01	0
1507076	99	37	31,4	cyclictest	1676141	-21	ntpq	10:25:04	0
1507076	99	37	29,6	cyclictest	1724264	-21	/usr/share/muni	11:20:01	0
1507086	99	36	34,1	cyclictest	1597719	-21	kworker/3:2+pm	08:53:42	3
1507086	99	36	33,2	cyclictest	1514382	-21	kworker/u8:0+flush-179:0	08:55:25	3
1507086	99	36	33,2	cyclictest	1300659	-1	kworker/3:1H+kblockd	12:35:03	3
1507086	99	36	33,2	cyclictest	1300659	-1	kworker/3:1H+kblockd	12:31:17	3
1507086	99	36	33,2	cyclictest	1300659	-1	kworker/3:1H+kblockd	10:40:25	3
1507086	99	36	33,2	cyclictest	1300659	-1	kworker/3:1H+kblockd	10:06:03	3
1507086	99	36	32,3	cyclictest	1520356	-21	kworker/u8:2+events_unbound	07:35:06	3
1507086	99	36	32,3	cyclictest	1520356	-21	kworker/u8:2+events_unbound	07:35:06	3
1507086	99	36	32,3	cyclictest	1514382	-21	kworker/u8:0+flush-179:0	08:40:06	3
1507084	99	36	34,1	cyclictest	1718496	-21	kworker/2:2+pm	12:26:20	2
1507084	99	36	34,1	cyclictest	1658202	-21	kworker/2:2+pm	10:25:42	2
1507084	99	36	1,34	cyclictest	1775493	-31	munin-graph	12:15:47	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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