OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #0, 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.
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
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack0slot2.osadl.org (updated Sun Jul 19, 2026 00:43:29)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1165410	2	55	20,30	sleep7	0	-21	swapper/7	19:06:34	7
1165629	2	41	31,7	sleep5	0	-21	swapper/5	19:09:36	5
1165908	99	40	38,2	cyclictest	1720211	-21	kworker/u16:1+flush-8:0	00:04:55	5
1165915	99	39	36,2	cyclictest	1763047	-21	ssh	23:35:04	7
1165915	99	37	34,2	cyclictest	1892067	-21	fschecks_time	00:29:53	7
1165905	99	35	33,2	cyclictest	1364419	-21	kworker/u16:2+events_unbound	22:20:09	4
1165915	99	34	33,0	cyclictest	0	-21	swapper/7	23:22:49	7
1165915	99	34	33,0	cyclictest	0	-21	swapper/7	23:22:49	7
1165908	99	34	32,2	cyclictest	1686740	-21	kworker/u16:3+events_unbound	23:13:32	5
1165436	2	34	24,7	sleep4	0	-21	swapper/4	19:06:55	4
1165915	99	33	31,1	cyclictest	0	-21	swapper/7	22:43:01	7
1165915	99	33	30,2	cyclictest	1741879	-21	users	23:25:12	7
1165908	99	33	31,2	cyclictest	1720211	-21	kworker/u16:1+events_unbound	00:19:35	5
1165915	99	32	30,1	cyclictest	1474897	-21	ssh	21:37:29	7
1165915	99	32	0,30	cyclictest	1609143	-21	rm	22:32:41	7
1911788	2	31	0,1	chrt	1911789	-21	grep	00:35:04	7
1165915	99	31	30,0	cyclictest	0	-21	swapper/7	22:24:45	7
1165915	99	31	28,1	cyclictest	0	-21	swapper/7	00:22:49	7
1165908	99	31	29,2	cyclictest	1671148	-21	kworker/u16:0+events_unbound	23:37:34	5
1165915	99	30	27,2	cyclictest	1402898	-21	diskmemload	00:11:05	7
1165908	99	30	28,2	cyclictest	1705271	-21	kworker/u16:2+events_unbound	23:21:58	5
1165908	99	30	28,2	cyclictest	1705271	-21	kworker/u16:2+events_unbound	23:21:58	5
1165908	99	30	28,2	cyclictest	1316683	-21	kworker/u16:3+events_unbound	22:19:22	5
1165908	99	30	28,2	cyclictest	1316683	-21	kworker/u16:3+events_unbound	21:59:34	5
1165915	99	29	28,0	cyclictest	0	-21	swapper/7	22:04:50	7
1165915	99	29	27,1	cyclictest	1646449	-21	ssh	22:49:10	7
1165915	99	29	27,1	cyclictest	0	-21	swapper/7	23:49:00	7
1165915	99	29	26,2	cyclictest	1583819	-21	chrt	22:20:48	7
1165908	99	29	27,2	cyclictest	1524884	-21	kworker/u16:0+events_unbound	22:37:54	5
1165908	99	29	27,2	cyclictest	1392243	-21	kworker/u16:4+events_unbound	21:22:42	5
1165908	99	29	27,2	cyclictest	1285453	-21	kworker/u16:2+events_unbound	20:08:45	5
1165908	99	29	27,2	cyclictest	1197969	-21	kworker/u16:2+events_unbound	19:32:05	5
1165915	99	28	27,0	cyclictest	0	-21	swapper/7	23:54:21	7
1165915	99	28	27,0	cyclictest	0	-21	swapper/7	22:16:09	7
1165915	99	28	27,0	cyclictest	0	-21	swapper/7	00:02:45	7
1165915	99	28	26,1	cyclictest	1817396	-21	ssh	23:59:20	7
1165915	99	28	26,1	cyclictest	1747505	-21	ssh	23:30:00	7
1165915	99	28	26,1	cyclictest	1510940	-21	ssh	21:51:33	7
1165915	99	28	26,1	cyclictest	0	-21	swapper/7	22:35:14	7
1165908	99	28	26,2	cyclictest	1817824	-21	kworker/u16:4+events_unbound	00:12:35	5
1165908	99	28	26,2	cyclictest	1805690	-21	kworker/u16:3+events_unbound	00:28:35	5
1165908	99	28	26,2	cyclictest	1769084	-21	kworker/u16:5+events_unbound	00:01:54	5
1165908	99	28	26,2	cyclictest	1756861	-21	kworker/u16:2+events_unbound	23:52:35	5
1165908	99	28	26,2	cyclictest	1756861	-21	kworker/u16:2+events_unbound	23:47:34	5
1165908	99	28	26,2	cyclictest	1720211	-21	kworker/u16:1+flush-8:0	23:30:37	5
1165908	99	28	26,2	cyclictest	1686740	-21	kworker/u16:3+events_unbound	23:27:38	5
1165905	99	28	26,2	cyclictest	1316683	-21	kworker/u16:3+events_unbound	20:40:09	4
1165915	99	27	26,0	cyclictest	0	-21	swapper/7	23:18:25	7
1165915	99	27	26,0	cyclictest	0	-21	swapper/7	23:11:17	7
1165915	99	27	26,0	cyclictest	0	-21	swapper/7	20:50:09	7
1165915	99	27	25,1	cyclictest	1840731	-21	ssh	00:07:13	7
1165915	99	27	25,1	cyclictest	1500172	-21	ssh	21:49:10	7
1165915	99	27	25,1	cyclictest	1488172	-21	ssh	21:44:33	7
1165915	99	27	25,1	cyclictest	1462594	-21	ssh	21:32:18	7
1165908	99	27	25,2	cyclictest	1878804	-21	kworker/u16:6+events_unbound	00:36:35	5
1165908	99	27	25,2	cyclictest	1705271	-21	kworker/u16:2+events_unbound	23:15:55	5
1165908	99	27	25,2	cyclictest	1463941	-21	kworker/u16:1+events_unbound	21:42:59	5
1165908	99	27	25,2	cyclictest	1392243	-21	kworker/u16:4+events_unbound	21:26:32	5
1165908	99	27	25,2	cyclictest	1364419	-21	kworker/u16:2+events_unbound	22:29:22	5
1165905	99	27	25,2	cyclictest	1463941	-21	kworker/u16:1+events_unbound	21:50:09	4
1165905	99	27	25,2	cyclictest	1392243	-21	kworker/u16:4+flush-8:0	21:25:09	4
1165915	99	26	25,0	cyclictest	0	-21	swapper/7	23:41:05	7
1165915	99	26	25,0	cyclictest	0	-21	swapper/7	21:25:53	7
1165908	99	26	24,2	cyclictest	1805690	-21	kworker/u16:3+events_unbound	00:34:26	5
1165908	99	26	24,2	cyclictest	1720211	-21	kworker/u16:1+events_unbound	23:56:26	5
1165908	99	26	24,2	cyclictest	1720211	-21	kworker/u16:1+events_unbound	23:44:03	5
1165908	99	26	24,2	cyclictest	1671148	-21	kworker/u16:0+events_unbound	23:06:55	5
1165908	99	26	24,2	cyclictest	1639384	-21	kworker/u16:2+events_unbound	22:53:34	5
1165908	99	26	24,2	cyclictest	1524884	-21	kworker/u16:0+events_unbound	22:11:56	5
1165908	99	26	24,2	cyclictest	1364419	-21	kworker/u16:2+events_unbound	21:01:41	5
1165908	99	26	24,2	cyclictest	1334036	-21	kworker/u16:1+events_unbound	20:40:58	5
1165908	99	26	24,2	cyclictest	1316683	-21	kworker/u16:3+events_unbound	22:54:48	5
1165908	99	26	24,2	cyclictest	1316683	-21	kworker/u16:3+events_unbound	22:42:22	5
1165908	99	26	24,2	cyclictest	1316683	-21	kworker/u16:3+events_unbound	22:08:55	5
1165908	99	26	24,2	cyclictest	1285453	-21	kworker/u16:2+events_unbound	20:13:13	5
1165908	99	26	24,2	cyclictest	1247599	-21	kworker/u16:0+events_unbound	20:39:09	5
1165908	99	26	24,2	cyclictest	1146521	-21	kworker/u16:1+events_unbound	19:49:17	5
1165908	99	26	24,2	cyclictest	1146521	-21	kworker/u16:1+events_unbound	19:26:25	5
1165905	99	26	24,2	cyclictest	1247599	-21	kworker/u16:0+events_unbound	19:50:09	4
1165913	99	25	23,2	cyclictest	1671148	-21	kworker/u16:0+flush-8:0	23:40:54	6
1165908	99	25	23,2	cyclictest	471251	-21	kworker/u16:3+events_unbound	19:23:25	5
1165908	99	25	23,2	cyclictest	1805690	-21	kworker/u16:3+events_unbound	00:23:34	5
1165908	99	25	23,2	cyclictest	1488326	-21	kworker/u16:4+events_unbound	21:53:46	5
1165908	99	25	23,2	cyclictest	1364419	-21	kworker/u16:2+flush-8:0	21:04:45	5
1165908	99	25	23,2	cyclictest	1316683	-21	kworker/u16:3+flush-8:0	20:50:06	5
1165908	99	25	23,2	cyclictest	1316683	-21	kworker/u16:3+events_unbound	22:34:23	5
1165908	99	25	23,2	cyclictest	1247599	-21	kworker/u16:0+events_unbound	20:02:13	5
1165908	99	25	23,2	cyclictest	1146521	-21	kworker/u16:1+events_unbound	19:38:30	5
1165905	99	25	21,3	cyclictest	1598222	-21	cat	22:29:39	4
1165915	99	24	23,0	cyclictest	0	-21	swapper/7	23:05:45	7
1165915	99	24	23,0	cyclictest	0	-21	swapper/7	23:01:29	7
1165915	99	24	23,0	cyclictest	0	-21	swapper/7	22:13:40	7
1165915	99	24	23,0	cyclictest	0	-21	swapper/7	22:01:29	7
1165915	99	24	23,0	cyclictest	0	-21	swapper/7	19:10:01	7
1165915	99	24	23,0	cyclictest	0	-21	swapper/7	19:10:01	7
1165908	99	24	22,2	cyclictest	1463941	-21	kworker/u16:1+events_unbound	21:37:56	5
1165908	99	24	22,2	cyclictest	1316683	-21	kworker/u16:3+events_unbound	22:49:04	5
1165908	99	24	22,2	cyclictest	1316683	-21	kworker/u16:3+events_unbound	21:47:23	5
1165908	99	24	22,2	cyclictest	1316683	-21	kworker/u16:3+events_unbound	20:57:58	5
1165908	99	24	22,2	cyclictest	1247599	-21	kworker/u16:0+events_unbound	20:21:14	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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