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 Sat Jul 25, 2026 00:43:33)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3182580	99	55	53,2	cyclictest	3749485	-21	kworker/u16:3+flush-8:0	00:09:49	4
3182135	2	53	43,7	sleep5	0	-21	swapper/5	19:07:13	5
3182116	2	45	34,8	sleep4	0	-21	swapper/4	19:06:56	4
3182030	2	43	8,30	sleep7	0	-21	swapper/7	19:05:46	7
3182580	99	38	36,2	cyclictest	3883875	-21	kworker/u16:0+events_unbound	00:35:38	4
3182580	99	38	36,2	cyclictest	3725440	-21	kworker/u16:0+events_unbound	23:33:39	4
3182580	99	37	35,2	cyclictest	3428517	-21	kworker/u16:0+events_unbound	21:12:35	4
3182580	99	37	35,2	cyclictest	3351462	-21	kworker/u16:2+events_unbound	22:52:07	4
3182580	99	37	32,2	cyclictest	3517140	-21	kworker/u16:0+events_unbound	22:36:35	4
3662922	2	36	0,1	chrt	0	-21	swapper/4	22:47:30	4
3182580	99	36	34,2	cyclictest	3517140	-21	kworker/u16:0+events_unbound	22:16:06	4
3182580	99	36	34,2	cyclictest	3441477	-21	kworker/u16:1+events_unbound	21:28:36	4
3182580	99	36	34,2	cyclictest	3351462	-21	kworker/u16:2+events_unbound	23:03:47	4
3182580	99	36	34,2	cyclictest	3215608	-21	kworker/u16:4+events_unbound	19:29:18	4
3182580	99	36	34,2	cyclictest	3215608	-21	kworker/u16:4+events_unbound	19:29:18	4
3182590	99	35	28,5	cyclictest	3322308	-21	latency_hist	20:19:17	7
3182580	99	35	33,2	cyclictest	3859576	-21	kworker/u16:4+events_unbound	00:19:19	4
3182580	99	35	33,2	cyclictest	3725440	-21	kworker/u16:0+flush-8:0	23:27:38	4
3182580	99	35	33,2	cyclictest	3600512	-21	kworker/u16:1+events_unbound	22:23:06	4
3182580	99	35	33,2	cyclictest	3517140	-21	kworker/u16:0+events_unbound	21:56:43	4
3182580	99	34	32,2	cyclictest	3810456	-21	kworker/u16:2+events_unbound	23:52:38	4
3182580	99	34	32,2	cyclictest	3698368	-21	kworker/u16:1+events_unbound	23:35:38	4
3182580	99	34	32,2	cyclictest	3517140	-21	kworker/u16:0+flush-8:0	22:09:51	4
3182580	99	34	32,2	cyclictest	3351462	-21	kworker/u16:2+events_unbound	22:01:15	4
3182145	2	34	23,8	sleep6	0	-21	swapper/6	19:07:22	6
3182580	99	33	31,2	cyclictest	3810456	-21	kworker/u16:2+events_unbound	00:27:35	4
3182580	99	33	31,2	cyclictest	3810456	-21	kworker/u16:2+events_unbound	00:27:35	4
3182580	99	33	31,2	cyclictest	3749485	-21	kworker/u16:3+events_unbound	23:58:38	4
3182580	99	33	31,2	cyclictest	3749485	-21	kworker/u16:3+events_unbound	23:45:42	4
3182580	99	33	31,2	cyclictest	3749485	-21	kworker/u16:3+events_unbound	23:45:42	4
3182580	99	33	31,2	cyclictest	3600512	-21	kworker/u16:1+flush-8:0	22:24:59	4
3182580	99	33	31,2	cyclictest	3541752	-21	kworker/u16:4+events_unbound	23:06:47	4
3182580	99	33	31,2	cyclictest	3428517	-21	kworker/u16:0+flush-8:0	21:32:47	4
3182580	99	33	31,2	cyclictest	3428517	-21	kworker/u16:0+events_unbound	21:21:54	4
3182580	99	33	31,2	cyclictest	3351462	-21	kworker/u16:2+events_unbound	23:20:23	4
3182580	99	33	31,2	cyclictest	3351462	-21	kworker/u16:2+events_unbound	22:09:06	4
3182580	99	33	30,2	cyclictest	3428517	-21	kworker/u16:0+flush-8:0	21:34:19	4
3182580	99	33	30,2	cyclictest	3399846	-21	kworker/u16:1+flush-8:0	20:59:17	4
3182590	99	32	0,30	cyclictest	3399958	-21	latency_hist	20:59:16	7
3182580	99	32	30,2	cyclictest	3810456	-21	kworker/u16:2+flush-8:0	00:19:10	4
3182580	99	32	30,2	cyclictest	3810456	-21	kworker/u16:2+flush-8:0	00:00:39	4
3182580	99	32	30,2	cyclictest	3810456	-21	kworker/u16:2+events_unbound	00:31:14	4
3182580	99	32	30,2	cyclictest	3351462	-21	kworker/u16:2+flush-8:0	23:15:11	4
3182580	99	32	30,2	cyclictest	3351462	-21	kworker/u16:2+events_unbound	21:47:12	4
3182580	99	31	29,2	cyclictest	3749485	-21	kworker/u16:3+events_unbound	00:05:38	4
3182580	99	31	29,2	cyclictest	3517140	-21	kworker/u16:0+events_unbound	21:53:02	4
3182585	99	30	27,2	cyclictest	3456337	-21	kworker/u16:3+flush-8:0	21:39:42	6
3182580	99	30	28,2	cyclictest	3351462	-21	kworker/u16:2+events_unbound	23:11:51	4
3182580	99	30	28,2	cyclictest	3351462	-21	kworker/u16:2+events_unbound	22:58:20	4
3920385	2	29	0,1	chrt	3920386	-21	idleruntime-cro	00:34:16	7
3182590	99	29	25,3	cyclictest	125	-21	kswapd0	22:08:42	7
3182580	99	29	27,2	cyclictest	3725440	-21	kworker/u16:0+events_unbound	23:43:39	4
3182580	99	29	27,2	cyclictest	3541752	-21	kworker/u16:4+flush-8:0	22:29:55	4
3182580	99	29	27,2	cyclictest	3456337	-21	kworker/u16:3+events_unbound	21:43:59	4
3182580	99	29	27,2	cyclictest	3428517	-21	kworker/u16:0+events_unbound	21:16:18	4
3182585	99	28	26,2	cyclictest	3351462	-21	kworker/u16:2+flush-8:0	21:04:32	6
3883041	2	27	0,1	chrt	3883042	-21	sh	00:17:49	7
3182580	99	27	25,2	cyclictest	3517140	-21	kworker/u16:0+events_unbound	22:40:10	4
3182580	99	27	25,2	cyclictest	3361090	-21	kworker/u16:4+events_unbound	21:04:40	4
3182580	99	27	25,2	cyclictest	3109306	-21	kworker/u16:3+flush-8:0	19:14:39	4
3182580	99	26	23,2	cyclictest	3312276	-21	kworker/u16:0+events_unbound	20:34:19	4
3182590	99	25	24,0	cyclictest	0	-21	swapper/7	23:22:48	7
3182590	99	25	24,0	cyclictest	0	-21	swapper/7	22:24:24	7
3182590	99	25	20,4	cyclictest	3712811	-21	latency_hist	23:09:16	7
3182590	99	24	23,0	cyclictest	0	-21	swapper/7	23:42:30	7
3182590	99	24	23,0	cyclictest	0	-21	swapper/7	20:14:03	7
3182580	99	24	22,2	cyclictest	3312276	-21	kworker/u16:0+events_unbound	20:16:43	4
3182580	99	24	22,2	cyclictest	3254102	-21	kworker/u16:1+events_unbound	19:46:26	4
3182590	99	23	22,0	cyclictest	0	-21	swapper/7	23:32:52	7
3182590	99	23	22,0	cyclictest	0	-21	swapper/7	19:48:35	7
3182590	99	23	17,5	cyclictest	3456106	-21	latency_hist	21:24:17	7
3182580	99	23	20,3	cyclictest	3293584	-21	kworker/u16:1+events_unbound	20:05:39	4
3182590	99	22	21,0	cyclictest	0	-21	swapper/7	20:06:35	7
3182590	99	22	21,0	cyclictest	0	-21	swapper/7	20:02:19	7
3182590	99	22	21,0	cyclictest	0	-21	swapper/7	19:51:23	7
3182590	99	21	16,4	cyclictest	3480500	-21	latency_hist	21:34:16	7
3182580	99	21	19,2	cyclictest	3312276	-21	kworker/u16:0+flush-8:0	20:55:35	4
3182580	99	21	19,2	cyclictest	3312276	-21	kworker/u16:0+events_unbound	20:48:27	4
3182580	99	21	19,2	cyclictest	3264414	-21	kworker/u16:2+events_unbound	19:49:26	4
3182580	99	21	19,2	cyclictest	3109306	-21	kworker/u16:3+events_unbound	19:22:27	4
3182580	99	21	18,2	cyclictest	3301863	-21	kworker/u16:3+flush-8:0	20:19:27	4
3182590	99	20	19,0	cyclictest	0	-21	swapper/7	23:50:00	7
3182590	99	20	19,0	cyclictest	0	-21	swapper/7	22:20:44	7
3182590	99	20	19,0	cyclictest	0	-21	swapper/7	19:23:38	7
3182590	99	20	19,0	cyclictest	0	-21	swapper/7	00:22:36	7
3182590	99	20	18,1	cyclictest	3442066	-21	ssh	21:16:04	7
3182590	99	20	17,2	cyclictest	3468440	-21	sed	21:29:17	7
3182580	99	20	18,2	cyclictest	3312276	-21	kworker/u16:0+events_unbound	20:12:27	4
3182580	99	20	18,2	cyclictest	3153718	-21	kworker/u16:0+events_unbound	19:35:27	4
3182590	99	19	18,0	cyclictest	0	-21	swapper/7	22:43:33	7
3182590	99	19	18,0	cyclictest	0	-21	swapper/7	20:21:29	7
3182590	99	19	18,0	cyclictest	0	-21	swapper/7	19:33:42	7
3182590	99	19	18,0	cyclictest	0	-21	swapper/7	19:33:42	7
3182590	99	19	18,0	cyclictest	0	-21	swapper/7	00:04:25	7
3182580	99	19	16,2	cyclictest	3293584	-21	kworker/u16:1+events_unbound	20:24:19	4
3182590	99	18	17,0	cyclictest	0	-21	swapper/7	20:44:42	7
3182590	99	18	15,2	cyclictest	3907050	-21	ssh	00:27:12	7
3182590	99	18	15,2	cyclictest	3907050	-21	ssh	00:27:12	7
3182590	99	18	12,5	cyclictest	3431599	-21	latency_hist	21:14:17	7
3182590	99	18	0,16	cyclictest	1302	-21	snmpd	22:37:03	7
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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