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 Thu Jun 19, 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
1582149	2	229	199,19	sleep2	0	-21	swapper/2	07:09:52	2
1581876	2	228	179,39	sleep1	0	-21	swapper/1	07:06:27	1
1581779	2	228	178,39	sleep0	0	-21	swapper/0	07:05:37	0
1582056	2	224	195,18	sleep3	0	-21	swapper/3	07:08:42	3
1765595	2	120	0,1	sleep1	0	-21	swapper/1	10:40:07	1
1582322	99	69	5,64	cyclictest	1695218	-21	kworker/u8:0+efi_rts_wq	09:33:45	0
1582325	99	64	48,13	cyclictest	1716819	-21	ThreadPoolForeg	09:45:01	1
1582328	99	62	59,2	cyclictest	1764019	-21	kworker/u8:1+events_unbound	10:50:09	3
1582325	99	61	4,56	cyclictest	1695218	-21	kworker/u8:0+efi_rts_wq	09:33:42	1
1582325	99	58	49,8	cyclictest	1652534	-21	/usr/share/muni	08:30:02	1
1582328	99	51	48,2	cyclictest	1683137	-21	kworker/u8:3+events_unbound	09:30:15	3
1582328	99	50	1,14	cyclictest	1777448	-21	snmp_wanpowerct	10:55:01	3
1582325	99	50	46,2	cyclictest	1678288	-21	/usr/share/muni	09:00:02	1
1582328	99	49	46,2	cyclictest	1683137	-21	kworker/u8:3+flush-179:0	09:20:10	3
1582326	99	48	43,3	cyclictest	1665384	-21	/usr/share/muni	08:45:10	2
1582328	99	47	44,2	cyclictest	1807085	-21	kworker/u8:4+events_unbound	11:40:00	3
1582328	99	47	44,2	cyclictest	1803295	-21	kworker/u8:2+events_unbound	11:25:07	3
1582325	99	46	44,1	cyclictest	0	-21	swapper/1	10:45:01	1
1582328	99	45	43,2	cyclictest	1646736	-21	kworker/u8:1+events_unbound	08:50:07	3
1582328	99	45	42,2	cyclictest	1846125	-21	kworker/u8:1+flush-179:0	12:20:09	3
1582322	99	45	41,3	cyclictest	1864808	-21	cat	12:35:08	0
1582322	99	45	0,44	cyclictest	1	-21	systemd	10:45:00	0
1582328	99	44	41,2	cyclictest	1764019	-21	kworker/u8:1+events_unbound	11:15:09	3
1582326	99	44	32,1	cyclictest	1716724	-13	chrome	09:45:01	2
1582328	99	43	40,2	cyclictest	1764019	-21	kworker/u8:1+events_unbound	10:45:06	3
1582328	99	43	40,2	cyclictest	1616905	-21	kworker/u8:3+flush-179:0	08:25:09	3
1582328	99	43	28,14	cyclictest	1586335	-21	kworker/u8:1+flush-179:0	07:45:10	3
1582325	99	43	39,3	cyclictest	1777461	-21	cat	10:55:01	1
1582322	99	43	41,1	cyclictest	1701037	-21	cat	09:25:08	0
1582322	99	43	38,3	cyclictest	1586335	-21	kworker/u8:1+flush-179:0	07:45:07	0
1583451	2	42	0,3	sleep0	19	1	rcuc/0	07:10:06	0
1582326	99	42	35,6	cyclictest	837106	-1	kworker/2:2H+kblockd	09:20:04	2
1582325	99	42	37,3	cyclictest	1829014	-21	latency_hist	11:55:00	1
1582328	99	41	38,2	cyclictest	1824468	-21	kworker/u8:2+flush-179:0	12:00:27	3
1582328	99	41	38,2	cyclictest	1695218	-21	kworker/u8:0+flush-179:0	09:35:10	3
1582328	99	41	38,2	cyclictest	1568957	-21	kworker/u8:5+flush-179:0	07:30:00	3
1582328	99	41	37,3	cyclictest	1832517	-31	munin-html	11:55:29	3
1582326	99	41	36,4	cyclictest	1759689	-21	kworker/2:2+pm	11:05:12	2
1582325	99	41	36,4	cyclictest	1600551	-21	/usr/share/muni	07:30:00	1
1582322	99	41	37,3	cyclictest	1777464	-21	cat	10:55:01	0
1582328	99	40	37,2	cyclictest	1651854	-21	kworker/u8:2+events_unbound	09:00:11	3
1582328	99	40	28,1	cyclictest	1639757	-21	awk	08:15:02	3
1582326	99	40	38,1	cyclictest	1798593	-21	kworker/2:0+pm	11:31:52	2
1582326	99	40	37,2	cyclictest	1759689	-21	kworker/2:2+pm	10:45:50	2
1582325	99	40	38,1	cyclictest	1586969	-21	kworker/1:3+pm	07:17:07	1
1582325	99	40	36,3	cyclictest	1637204	-21	apt-get	08:10:12	1
1582328	99	39	36,2	cyclictest	1646736	-21	kworker/u8:1+events_unbound	08:45:08	3
1582328	99	39	36,2	cyclictest	1586335	-21	kworker/u8:1+events_unbound	07:30:06	3
1582328	99	39	32,3	cyclictest	1764019	-21	kworker/u8:1+events_unbound	11:00:24	3
1582326	99	39	37,1	cyclictest	1798593	-21	kworker/2:0+pm	12:31:23	2
1582326	99	39	37,1	cyclictest	1798593	-21	kworker/2:0+pm	11:35:16	2
1582326	99	39	37,1	cyclictest	1759689	-21	kworker/2:2+pm	11:20:51	2
1582326	99	39	37,1	cyclictest	1562915	-21	kworker/2:0+pm	07:50:01	2
1582326	99	39	37,1	cyclictest	1562915	-21	kworker/2:0+pm	07:25:54	2
1582326	99	39	37,1	cyclictest	1562915	-21	kworker/2:0+pm	07:20:13	2
1582326	99	39	36,2	cyclictest	1798593	-21	kworker/2:0+pm	12:20:13	2
1582326	99	39	36,2	cyclictest	1759689	-21	kworker/2:2+pm	10:50:11	2
1582326	99	39	36,2	cyclictest	1562915	-21	kworker/2:0+pm	09:30:03	2
1582326	99	39	36,1	cyclictest	1759689	-21	kworker/2:2+pm	10:55:13	2
1582326	99	39	35,3	cyclictest	1798593	-21	kworker/2:0+pm	12:06:18	2
1582326	99	39	35,3	cyclictest	1798593	-21	kworker/2:0+pm	11:58:47	2
1582326	99	39	34,4	cyclictest	1793807	-31	munin-html	11:10:34	2
1582326	99	39	34,4	cyclictest	1562915	-21	kworker/2:0+pm	07:35:29	2
1582326	99	39	29,9	cyclictest	1562915	-21	kworker/2:0+pm	08:25:22	2
1582326	99	39	0,33	cyclictest	0	-21	swapper/2	07:10:28	2
1582325	99	39	21,9	cyclictest	1801618	-21	cat	11:20:15	1
1582322	99	39	35,3	cyclictest	1586335	-21	kworker/u8:1+events_unbound	07:35:07	0
1582322	99	39	34,4	cyclictest	1200406	-1	kworker/0:2H+kblockd	11:45:11	0
1582328	99	38	34,3	cyclictest	1589707	-21	kworker/u8:3+flush-179:0	07:20:24	3
1582326	99	38	36,1	cyclictest	1798593	-21	kworker/2:0+pm	12:35:19	2
1582326	99	38	36,1	cyclictest	1798593	-21	kworker/2:0+pm	12:01:13	2
1582326	99	38	36,1	cyclictest	1759689	-21	kworker/2:2+pm	11:16:23	2
1582326	99	38	36,1	cyclictest	1745583	-21	kworker/2:1+pm	10:20:13	2
1582326	99	38	36,1	cyclictest	1729785	-21	kworker/2:0+pm	10:15:26	2
1582326	99	38	36,1	cyclictest	1562915	-21	kworker/2:0+pm	09:35:42	2
1582326	99	38	36,1	cyclictest	1562915	-21	kworker/2:0+pm	09:01:01	2
1582326	99	38	36,1	cyclictest	1562915	-21	kworker/2:0+pm	08:50:01	2
1582326	99	38	36,1	cyclictest	1562915	-21	kworker/2:0+pm	08:30:54	2
1582326	99	38	36,1	cyclictest	1562915	-21	kworker/2:0+pm	08:16:00	2
1582326	99	38	36,1	cyclictest	1562915	-21	kworker/2:0+pm	08:10:26	2
1582326	99	38	36,1	cyclictest	1562915	-21	kworker/2:0+pm	07:16:01	2
1582326	99	38	35,2	cyclictest	1798593	-21	kworker/2:0+pm	12:17:02	2
1582326	99	38	35,2	cyclictest	1798593	-21	kworker/2:0+pm	12:17:02	2
1582326	99	38	32,5	cyclictest	1562915	-21	kworker/2:0+pm	08:55:05	2
1582326	99	38	31,5	cyclictest	1712597	-21	kworker/2:2+pm	09:55:05	2
1582322	99	38	34,3	cyclictest	1725271	-21	kworker/u8:2+flush-179:0	10:35:15	0
1582322	99	38	34,2	cyclictest	1200406	-1	kworker/0:2H+kblockd	11:40:47	0
1582322	99	38	32,3	cyclictest	1622319	-21	latency_hist	07:55:01	0
1582328	99	37	35,2	cyclictest	1858577	-21	kworker/u8:0+flush-179:0	12:30:00	3
1582328	99	37	35,1	cyclictest	1507290	-21	kworker/3:1+pm	08:33:15	3
1582328	99	37	34,2	cyclictest	1746299	-31	munin-html	10:15:28	3
1582328	99	37	34,2	cyclictest	1729511	-21	kworker/u8:5+events_unbound	10:30:09	3
1582328	99	37	34,2	cyclictest	1586335	-21	kworker/u8:1+events_unbound	07:55:07	3
1582328	99	37	34,2	cyclictest	1538852	-1	kworker/3:0H+kblockd	10:15:00	3
1582328	99	37	34,2	cyclictest	1538852	-1	kworker/3:0H+kblockd	08:40:07	3
1582328	99	37	34,2	cyclictest	1538852	-1	kworker/3:0H+kblockd	08:10:00	3
1582328	99	37	33,3	cyclictest	1798174	-21	kworker/u8:0+events_unbound	11:41:05	3
1582326	99	37	35,1	cyclictest	1798593	-21	kworker/2:0+pm	11:40:17	2
1582326	99	37	35,1	cyclictest	1759689	-21	kworker/2:2+pm	10:40:29	2
1582326	99	37	35,1	cyclictest	1729785	-21	kworker/2:0+pm	10:02:38	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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