OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

Default latency plot of system in rack #b, slot #1

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

Characteristics of the 100 highest latencies:

System rackbslot1.osadl.org (updated Thu Dec 04, 2025 12:45:17)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1618107	2	219	171,38	sleep2	0	-21	swapper/2	07:08:10	2
1618000	2	198	174,14	sleep0	0	-21	swapper/0	07:06:52	0
1618249	2	195	168,18	sleep3	0	-21	swapper/3	07:09:56	3
1617905	2	181	157,14	sleep1	0	-21	swapper/1	07:06:09	1
1618463	99	77	5,71	cyclictest	1696010	-21	kworker/u8:2+efi_rts_wq	08:39:16	3
1618458	99	75	60,2	cyclictest	1655469	-21	snmp_wlanswitch	07:45:01	1
1618458	99	69	54,13	cyclictest	1841570	-21	snmp_ryswitch2.	10:45:02	1
1618456	99	68	63,4	cyclictest	1644787	-21	kworker/u8:4+events_unbound	07:35:35	0
1618462	99	66	62,3	cyclictest	1846521	-21	kworker/u8:5+events_unbound	11:05:18	2
1618462	99	63	59,3	cyclictest	1854274	-21	kworker/u8:2+flush-179:0	11:10:36	2
1618463	99	62	58,2	cyclictest	3125721	-21	chrome	08:45:03	3
1618462	99	61	55,4	cyclictest	1928880	-21	kworker/u8:0+events_unbound	12:30:36	2
1618456	99	61	56,4	cyclictest	1836369	-21	/usr/share/muni	10:40:10	0
1618463	99	60	55,4	cyclictest	1893392	-21	/usr/share/muni	11:35:03	3
1618462	99	60	57,2	cyclictest	1675372	-21	kworker/u8:4+events_unbound	08:25:00	2
1618462	99	60	55,4	cyclictest	1820650	-21	kworker/u8:0+events_unbound	10:30:26	2
1618456	99	60	57,2	cyclictest	1794288	-21	kworker/u8:1+flush-179:0	10:10:36	0
1618456	99	60	57,2	cyclictest	1675372	-21	kworker/u8:4+flush-179:0	08:30:10	0
1618456	99	60	56,3	cyclictest	1846521	-21	kworker/u8:5+flush-179:0	12:05:00	0
1618462	99	59	55,3	cyclictest	1719018	-21	kworker/u8:3+events_unbound	08:49:10	2
1618456	99	59	54,4	cyclictest	3125725	-21	ThreadPoolForeg	11:40:00	0
1618456	99	58	53,4	cyclictest	1696010	-21	kworker/u8:2+flush-179:0	08:40:14	0
1618456	99	57	54,2	cyclictest	1767462	-21	kworker/u8:3+flush-179:0	09:55:36	0
1618462	99	56	52,3	cyclictest	1911529	-21	kworker/u8:3+flush-179:0	12:00:36	2
1618462	99	56	51,4	cyclictest	1579015	-21	kworker/u8:1+flush-179:0	07:15:21	2
1618456	99	56	51,3	cyclictest	1794288	-21	kworker/u8:1+events_unbound	10:45:35	0
1618456	99	56	51,3	cyclictest	1670611	-21	kworker/u8:2+events_unbound	08:10:35	0
1618456	99	55	51,3	cyclictest	1921649	-21	kworker/u8:2+events_unbound	12:30:13	0
1618463	99	54	49,4	cyclictest	1934308	-21	apt-get	12:15:00	3
1618462	99	54	51,2	cyclictest	1846521	-21	kworker/u8:5+events_unbound	11:30:24	2
1618462	99	54	51,2	cyclictest	1794288	-21	kworker/u8:1+flush-179:0	11:01:44	2
1618462	99	54	50,3	cyclictest	1726832	-21	kworker/u8:2+flush-179:0	09:20:00	2
1618462	99	54	50,3	cyclictest	1696010	-21	kworker/u8:2+events_unbound	08:35:15	2
1618456	99	54	50,3	cyclictest	1675372	-21	kworker/u8:4+flush-179:0	08:20:25	0
1618463	99	53	49,3	cyclictest	1903802	-21	CacheThread_Blo	11:45:01	3
1618463	99	53	49,3	cyclictest	1892915	-21	gpgv	11:35:01	3
1618462	99	53	49,3	cyclictest	1767462	-21	kworker/u8:3+events_unbound	10:10:00	2
1618462	99	53	49,3	cyclictest	1767462	-21	kworker/u8:3+events_unbound	10:10:00	2
1618462	99	53	49,3	cyclictest	1757107	-21	kworker/u8:1+flush-179:0	09:30:34	2
1618462	99	53	49,3	cyclictest	1665477	-21	kworker/u8:1+events_unbound	08:15:32	2
1618458	99	53	45,6	cyclictest	3125725	-21	ThreadPoolForeg	10:45:00	1
1618456	99	53	47,4	cyclictest	1726832	-21	kworker/u8:2+flush-179:0	09:17:03	0
1618463	99	52	49,2	cyclictest	1810184	-21	apt-get	10:15:05	3
1618463	99	52	49,2	cyclictest	1810184	-21	apt-get	10:15:04	3
1618462	99	52	49,2	cyclictest	1903848	-26	chrome	11:45:02	2
1618462	99	52	49,2	cyclictest	1742549	-21	kworker/u8:1+events_unbound	09:10:02	2
1618462	99	52	48,3	cyclictest	1757107	-21	kworker/u8:1+flush-179:0	09:35:38	2
1618462	99	52	47,4	cyclictest	1929456	-21	/usr/share/muni	12:10:04	2
1618456	99	52	49,2	cyclictest	1597091	-21	kworker/u8:2+flush-179:0	07:25:36	0
1618456	99	52	48,3	cyclictest	1757107	-21	kworker/u8:1+flush-179:0	09:20:27	0
1618456	99	52	47,4	cyclictest	1794288	-21	kworker/u8:1+flush-179:0	10:20:17	0
1618462	99	51	48,2	cyclictest	1719018	-21	kworker/u8:3+events_unbound	08:55:19	2
1618462	99	51	44,2	cyclictest	1665477	-21	kworker/u8:1+events_unbound	08:10:29	2
1618458	99	51	44,6	cyclictest	247561	-21	ThreadPoolForeg	07:34:24	1
1618456	99	51	48,2	cyclictest	1767462	-21	kworker/u8:3+events_unbound	11:05:08	0
1618456	99	51	47,3	cyclictest	1711885	-21	kworker/u8:0+events_unbound	10:00:30	0
1618456	99	51	46,3	cyclictest	1767462	-21	kworker/u8:3+flush-179:0	09:45:30	0
1618462	99	50	46,3	cyclictest	1921649	-21	kworker/u8:2+flush-179:0	12:05:37	2
1618462	99	50	44,5	cyclictest	3125725	-21	ThreadPoolForeg	10:00:10	2
1618462	99	50	44,2	cyclictest	1607376	-21	kworker/u8:5+events_unbound	07:31:11	2
1618456	99	50	46,3	cyclictest	1794288	-21	kworker/u8:1+flush-179:0	10:50:11	0
1618456	99	50	46,3	cyclictest	1670611	-21	kworker/u8:2+flush-179:0	08:05:17	0
1618463	99	49	42,5	cyclictest	3125725	-21	ThreadPoolForeg	12:15:30	3
1618462	99	49	45,3	cyclictest	1846521	-21	kworker/u8:5+flush-179:0	11:35:16	2
1618462	99	49	44,4	cyclictest	1645113	-21	/usr/share/muni	07:35:09	2
1618456	99	49	46,2	cyclictest	1854274	-21	kworker/u8:2+flush-179:0	11:40:18	0
1618456	99	49	43,2	cyclictest	1846521	-21	kworker/u8:5+events_unbound	11:50:26	0
1618463	99	48	36,11	cyclictest	247516	-21	Chrome_ChildIOT	08:10:14	3
1618462	99	48	46,2	cyclictest	1846521	-21	kworker/u8:5+flush-179:0	11:21:05	2
1618462	99	48	46,2	cyclictest	1846521	-21	kworker/u8:5+flush-179:0	11:21:05	2
1618462	99	48	44,3	cyclictest	1846521	-21	kworker/u8:5+events_unbound	11:41:47	2
1618462	99	48	44,3	cyclictest	1767462	-21	kworker/u8:3+events_unbound	09:55:13	2
1618462	99	48	44,3	cyclictest	1654229	-21	kworker/u8:0+flush-179:0	07:52:54	2
1618462	99	48	44,3	cyclictest	1644784	-21	kworker/u8:3+events_unbound	07:47:30	2
1618456	99	48	45,2	cyclictest	1928880	-21	kworker/u8:0+flush-179:0	12:15:29	0
1618456	99	48	45,2	cyclictest	1690794	-21	kworker/u8:0+flush-179:0	08:25:10	0
1618456	99	48	44,3	cyclictest	1871621	-21	kworker/u8:0+flush-179:0	11:20:09	0
1618456	99	48	44,3	cyclictest	1871621	-21	kworker/u8:0+flush-179:0	11:20:08	0
1618456	99	48	44,3	cyclictest	1696010	-21	kworker/u8:2+flush-179:0	08:35:17	0
1618456	99	48	44,2	cyclictest	1892804	-21	kworker/u8:1+flush-179:0	12:00:00	0
1618456	99	48	43,4	cyclictest	1794288	-21	kworker/u8:1+events_unbound	10:31:04	0
1618456	99	48	40,3	cyclictest	1921649	-21	kworker/u8:2+flush-179:0	12:25:06	0
1618456	99	48	0,46	cyclictest	3125630	-13	chrome	07:20:01	0
1618463	99	47	42,4	cyclictest	1826206	-21	/usr/share/muni	10:30:08	3
1618463	99	47	41,4	cyclictest	1640026	-21	/usr/share/muni	07:30:04	3
1618463	99	47	32,13	cyclictest	1169670	-1	kworker/3:1H+kblockd	08:20:44	3
1618462	99	47	43,3	cyclictest	1767462	-21	kworker/u8:3+flush-179:0	10:20:34	2
1618462	99	47	43,3	cyclictest	1665477	-21	kworker/u8:1+events_unbound	08:28:36	2
1618462	99	47	40,3	cyclictest	1794288	-21	kworker/u8:1+events_unbound	10:57:39	2
1618458	99	47	44,2	cyclictest	591032	-1	kworker/1:2H+kblockd	12:02:11	1
1618458	99	47	38,7	cyclictest	1805351	-21	/usr/share/muni	10:10:09	1
1618456	99	47	43,3	cyclictest	1767462	-21	kworker/u8:3+flush-179:0	11:15:30	0
1618456	99	47	43,3	cyclictest	1726832	-21	kworker/u8:2+events_unbound	09:30:13	0
1618456	99	47	43,3	cyclictest	1644784	-21	kworker/u8:3+flush-179:0	07:45:12	0
1618456	99	47	42,4	cyclictest	1820650	-21	kworker/u8:0+flush-179:0	10:38:23	0
1817812	2	46	0,2	sleep1	1816032	-21	/usr/share/muni	10:20:17	1
1618463	99	46	42,3	cyclictest	1775369	-21	apt-get	09:40:13	3
1618462	99	46	43,2	cyclictest	1757107	-21	kworker/u8:1+events_unbound	09:40:04	2
1618462	99	46	42,3	cyclictest	1846521	-21	kworker/u8:5+events_unbound	12:15:12	2
1618462	99	46	42,3	cyclictest	1767462	-21	kworker/u8:3+flush-179:0	11:15:49	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


Access: public		Short link to this page
This page was last modified on 2019-05-28 - 00:17