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 50 highest latencies:

System rack0slot2.osadl.org (updated Fri Oct 04, 2024 00:43:34)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1809833	2	52	16,30	sleep7	0	-21	swapper/7	19:04:59	7
1810584	2	48	37,8	sleep5	0	-21	swapper/5	19:07:22	5
2337	89	42	0,35	rtkit-daemon	0	-21	swapper/6	19:08:46	6
1810715	2	38	27,8	sleep4	0	-21	swapper/4	19:09:13	4
1811000	99	35	30,4	cyclictest	2046878	-21	latency_hist	21:09:27	5
1810995	99	33	31,2	cyclictest	2124126	-21	kworker/u16:1+events_unbound	21:46:05	4
1810995	99	33	28,4	cyclictest	2434420	-21	latency_hist	00:29:27	4
1811005	99	25	13,5	cyclictest	0	-21	swapper/7	00:39:13	7
1811005	99	24	23,0	cyclictest	0	-21	swapper/7	21:29:42	7
1811002	99	24	22,2	cyclictest	1950575	-21	kworker/u16:2+flush-8:0	20:39:45	6
1811005	99	23	22,0	cyclictest	0	-21	swapper/7	20:54:53	7
1811000	99	22	14,8	cyclictest	0	-21	swapper/5	21:15:31	5
1810995	99	22	20,2	cyclictest	1757028	-21	kworker/u16:3+events_unbound	19:54:53	4
1811005	99	21	20,0	cyclictest	0	-21	swapper/7	00:24:45	7
1811005	99	21	19,1	cyclictest	0	-21	swapper/7	00:09:40	7
1811002	99	21	19,2	cyclictest	1950575	-21	kworker/u16:2+flush-8:0	21:09:45	6
1811002	99	21	19,2	cyclictest	1901518	-21	kworker/u16:0+flush-8:0	20:14:44	6
1811002	99	21	19,2	cyclictest	1781746	-21	kworker/u16:4+events_unbound	19:19:45	6
1811002	99	21	19,2	cyclictest	1757028	-21	kworker/u16:3+flush-8:0	19:49:43	6
1811005	99	20	19,0	cyclictest	0	-21	swapper/7	19:49:51	7
1811002	99	20	18,2	cyclictest	2376632	-21	kworker/u16:3+events_unbound	23:59:40	6
1811002	99	20	17,3	cyclictest	1901518	-21	kworker/u16:0+flush-8:0	20:09:48	6
1811005	99	19	17,1	cyclictest	0	-21	swapper/7	23:24:44	7
1811002	99	19	17,2	cyclictest	2357087	-21	kworker/u16:2+events_unbound	00:34:50	6
1811002	99	19	14,4	cyclictest	2066255	-21	latency_hist	21:19:27	6
1810995	99	19	17,2	cyclictest	2289308	-21	kworker/u16:3+events_unbound	23:19:52	4
1810995	99	19	15,3	cyclictest	2094281	-21	kworker/u16:3+flush-8:0	22:14:44	4
1811005	99	18	4,6	cyclictest	0	-21	swapper/7	23:37:50	7
1811005	99	18	4,6	cyclictest	0	-21	swapper/7	22:57:55	7
1811005	99	18	16,1	cyclictest	0	-21	swapper/7	20:29:39	7
1811002	99	18	16,2	cyclictest	2377872	-21	kworker/u16:5+events_unbound	00:22:22	6
1811002	99	18	16,2	cyclictest	1969310	-21	kworker/u16:0+events_unbound	22:39:50	6
1811000	99	18	14,3	cyclictest	1873170	-21	kworker/u16:2+events_unbound	19:39:41	5
1811005	99	17	4,6	cyclictest	0	-21	swapper/7	22:23:39	7
1811005	99	17	3,6	cyclictest	0	-21	swapper/7	19:39:35	7
1811005	99	17	3,5	cyclictest	0	-21	swapper/7	22:51:25	7
1811005	99	17	16,0	cyclictest	0	-21	swapper/7	20:14:53	7
1811005	99	17	16,0	cyclictest	0	-21	swapper/7	19:44:50	7
1811005	99	17	16,0	cyclictest	0	-21	swapper/7	00:29:57	7
1811002	99	17	15,2	cyclictest	2114384	-21	kworker/u16:2+events_unbound	22:29:42	6
1811002	99	17	15,2	cyclictest	2094281	-21	kworker/u16:3+events_unbound	22:14:33	6
1811002	99	17	15,2	cyclictest	1969310	-21	kworker/u16:0+events_unbound	22:04:51	6
1811002	99	17	15,2	cyclictest	1950575	-21	kworker/u16:2+events_unbound	21:29:40	6
1811002	99	17	15,2	cyclictest	1772156	-21	kworker/u16:1+events_unbound	19:29:09	6
1811002	99	17	0,16	cyclictest	0	-21	swapper/6	23:54:38	6
1811000	99	17	14,2	cyclictest	2094281	-21	kworker/u16:3+events_unbound	22:09:40	5
1810995	99	17	14,2	cyclictest	2241039	-21	kworker/u16:2+events_unbound	22:49:42	4
1811005	99	16	6,9	cyclictest	0	-21	swapper/7	22:09:51	7
1811005	99	16	2,6	cyclictest	0	-21	swapper/7	21:27:26	7
1811005	99	16	15,0	cyclictest	0	-21	swapper/7	23:39:54	7
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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