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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 Tue Mar 24, 2026 12:43:34)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1635630	99	65	62,3	cyclictest	1927143	-21	kworker/u16:5+flush-8:0	09:25:16	4
1635283	2	58	48,7	sleep6	0	-21	swapper/6	07:02:27	6
1635640	99	48	0,46	cyclictest	1904613	-21	latency_hist	09:18:10	7
1635129	2	46	36,7	sleep4	0	-21	swapper/4	07:00:16	4
1635056	2	45	35,7	sleep5	0	-21	swapper/5	06:59:13	5
1635640	99	42	36,5	cyclictest	1976861	-21	latency_hist	09:48:11	7
1635640	99	41	35,5	cyclictest	2265451	-21	latency_hist	11:48:11	7
1626779	2	40	3,31	sleep7	0	-21	swapper/7	06:58:27	7
1635640	99	39	38,0	cyclictest	0	-21	swapper/7	10:03:37	7
1635640	99	38	33,4	cyclictest	2217458	-21	latency_hist	11:28:10	7
1635640	99	38	33,4	cyclictest	2012981	-21	latency_hist	10:03:10	7
1635640	99	38	33,4	cyclictest	2012981	-21	latency_hist	10:03:10	7
1635632	99	37	35,2	cyclictest	2058170	-21	kworker/u16:3+events_unbound	10:53:37	5
1635640	99	36	0,34	cyclictest	2121307	-21	sed	10:48:10	7
1635636	99	34	32,2	cyclictest	1977286	-21	kworker/u16:1+flush-8:0	09:53:34	6
1786549	2	33	0,1	chrt	1786551	-21	kthreadcore	08:18:30	7
1635640	99	33	31,1	cyclictest	2046087	-21	ssh	10:13:37	7
1635636	99	31	29,2	cyclictest	2168482	-21	kworker/u16:1+flush-8:0	11:13:32	6
1635636	99	31	29,2	cyclictest	2168482	-21	kworker/u16:1+flush-8:0	11:13:32	6
1635630	99	31	29,2	cyclictest	1918116	-21	kworker/u16:2+flush-8:0	09:48:51	4
1635640	99	30	25,4	cyclictest	1677442	-21	latency_hist	07:23:11	7
1635630	99	30	28,2	cyclictest	1667542	-21	kworker/u16:3+events_unbound	07:28:25	4
1635636	99	29	27,2	cyclictest	2241884	-21	kworker/u16:0+events_unbound	11:53:33	6
1635632	99	29	27,2	cyclictest	1927143	-21	kworker/u16:5+events_unbound	09:48:38	5
1635632	99	29	27,2	cyclictest	1616742	-21	kworker/u16:1+flush-8:0	08:28:37	5
1915931	2	27	0,1	chrt	1915932	-21	sh	09:21:53	7
1915931	2	27	0,1	chrt	1915932	-21	sh	09:21:53	7
1635630	99	27	25,2	cyclictest	1811105	-21	kworker/u16:3+flush-8:0	09:03:11	4
1635630	99	27	25,2	cyclictest	1696576	-21	kworker/u16:0+events_unbound	08:53:33	4
1635630	99	26	24,2	cyclictest	2264184	-21	kworker/u16:1+events_unbound	12:28:24	4
1635636	99	25	23,2	cyclictest	1696576	-21	kworker/u16:0+events_unbound	08:58:34	6
1635636	99	25	23,2	cyclictest	1696576	-21	kworker/u16:0+events_unbound	08:38:34	6
1635630	99	25	23,2	cyclictest	2264184	-21	kworker/u16:1+events_unbound	11:58:53	4
1635640	99	24	0,23	cyclictest	2337491	-21	cut	12:18:10	7
1635632	99	24	21,2	cyclictest	1696576	-21	kworker/u16:0+events_unbound	07:38:25	5
1635630	99	24	22,2	cyclictest	2264184	-21	kworker/u16:1+events_unbound	12:23:31	4
1635630	99	24	22,2	cyclictest	1616742	-21	kworker/u16:1+flush-8:0	07:13:26	4
1635630	99	24	21,3	cyclictest	1977286	-21	kworker/u16:1+flush-8:0	10:23:35	4
1635640	99	23	21,1	cyclictest	1998516	-21	ssh	09:53:41	7
1635636	99	23	21,2	cyclictest	2037087	-21	kworker/u16:2+flush-8:0	10:53:10	6
1635636	99	23	21,2	cyclictest	1696576	-21	kworker/u16:0+flush-8:0	09:43:34	6
1635636	99	23	20,2	cyclictest	1744418	-21	kworker/u16:4+flush-8:0	08:18:36	6
1635630	99	23	21,2	cyclictest	1918116	-21	kworker/u16:2+flush-8:0	09:38:35	4
1635636	99	22	20,2	cyclictest	2037087	-21	kworker/u16:2+events_unbound	11:23:39	6
1635636	99	22	20,2	cyclictest	1977286	-21	kworker/u16:1+flush-8:0	10:33:48	6
1635630	99	22	20,2	cyclictest	1744418	-21	kworker/u16:4+events_unbound	08:19:27	4
1635640	99	21	20,0	cyclictest	0	-21	swapper/7	12:08:25	7
1635640	99	21	12,8	cyclictest	1927020	-21	pool-gnome-soft	09:25:10	7
1635640	99	21	0,19	cyclictest	2243177	-21	ssh	11:38:26	7
1635636	99	21	19,2	cyclictest	1977286	-21	kworker/u16:1+events_unbound	10:03:39	6
1635636	99	21	19,2	cyclictest	1918116	-21	kworker/u16:2+events_unbound	09:25:36	6
1635632	99	21	18,3	cyclictest	2037087	-21	kworker/u16:2+events_unbound	11:08:38	5
1635630	99	21	19,2	cyclictest	2168482	-21	kworker/u16:1+events_unbound	11:19:05	4
1635630	99	21	19,2	cyclictest	1820831	-21	kworker/u16:1+events_unbound	09:18:38	4
1635630	99	21	19,2	cyclictest	1820831	-21	kworker/u16:1+events_unbound	09:18:38	4
1635630	99	21	19,2	cyclictest	1696576	-21	kworker/u16:0+events_unbound	10:03:23	4
1635636	99	20	18,2	cyclictest	2094887	-21	kworker/u16:0+events_unbound	11:03:25	6
1635636	99	20	18,2	cyclictest	2058170	-21	kworker/u16:3+events_unbound	10:38:28	6
1635636	99	20	18,2	cyclictest	2058170	-21	kworker/u16:3+events_unbound	10:38:28	6
1635636	99	20	18,2	cyclictest	2037087	-21	kworker/u16:2+events_unbound	12:03:33	6
1635632	99	20	17,3	cyclictest	1696576	-21	kworker/u16:0+flush-8:0	09:13:36	5
1635632	99	20	17,2	cyclictest	2037087	-21	kworker/u16:2+flush-8:0	12:03:16	5
1635630	99	20	18,2	cyclictest	2037087	-21	kworker/u16:2+events_unbound	11:28:45	4
1635630	99	20	18,2	cyclictest	1977286	-21	kworker/u16:1+flush-8:0	10:28:35	4
1635630	99	20	18,2	cyclictest	1616742	-21	kworker/u16:1+flush-8:0	07:08:32	4
1635630	99	20	18,2	cyclictest	1616742	-21	kworker/u16:1+flush-8:0	07:08:32	4
1635640	99	19	0,17	cyclictest	124	-21	kswapd0	11:48:34	7
1635636	99	19	17,2	cyclictest	2264184	-21	kworker/u16:1+flush-8:0	12:28:34	6
1635636	99	19	16,2	cyclictest	2168482	-21	kworker/u16:1+flush-8:0	11:33:10	6
1635630	99	19	17,2	cyclictest	2287424	-21	kworker/u16:4+events_unbound	12:18:39	4
1635630	99	19	17,2	cyclictest	2168482	-21	kworker/u16:1+events_unbound	11:33:46	4
1635630	99	19	17,2	cyclictest	1820831	-21	kworker/u16:1+events_unbound	08:48:23	4
1635630	99	19	17,2	cyclictest	1616742	-21	kworker/u16:1+events_unbound	07:26:16	4
1635640	99	18	8,8	cyclictest	0	-21	swapper/7	07:58:37	7
1635640	99	18	0,17	cyclictest	1985864	-21	runrttasks	09:48:36	7
1635636	99	18	16,2	cyclictest	2264184	-21	kworker/u16:1+flush-8:0	11:58:34	6
1635636	99	18	16,2	cyclictest	2264184	-21	kworker/u16:1+events_unbound	12:23:23	6
1635630	99	18	16,2	cyclictest	2094887	-21	kworker/u16:0+flush-8:0	10:43:36	4
1635630	99	18	16,2	cyclictest	2058170	-21	kworker/u16:3+flush-8:0	11:23:26	4
1635630	99	18	16,2	cyclictest	1820831	-21	kworker/u16:1+flush-8:0	08:38:36	4
1635630	99	18	16,2	cyclictest	1696576	-21	kworker/u16:0+events_unbound	07:34:56	4
1635640	99	17	17,0	cyclictest	0	-21	swapper/7	11:03:28	7
1635640	99	17	16,0	cyclictest	0	-21	swapper/7	09:08:29	7
1635640	99	17	0,16	cyclictest	2193372	-21	latency_hist	11:18:10	7
1635640	99	17	0,16	cyclictest	2193372	-21	latency_hist	11:18:10	7
1635632	99	17	0,16	cyclictest	2273385	-21	kthreadcore	11:48:30	5
1635630	99	17	15,2	cyclictest	2058170	-21	kworker/u16:3+events_unbound	11:43:23	4
1635630	99	17	15,2	cyclictest	1927143	-21	kworker/u16:5+events_unbound	09:33:35	4
1635640	99	16	9,7	cyclictest	6344	-21	gmain	12:27:44	7
1635640	99	16	9,6	cyclictest	0	-21	swapper/7	09:33:11	7
1635640	99	16	8,7	cyclictest	0	-21	swapper/7	12:18:31	7
1635640	99	16	8,7	cyclictest	0	-21	swapper/7	11:33:23	7
1635640	99	16	8,7	cyclictest	0	-21	swapper/7	10:28:25	7
1635640	99	16	7,8	cyclictest	0	-21	swapper/7	11:18:28	7
1635640	99	16	12,3	cyclictest	1267	-21	snmpd	09:00:35	7
1635640	99	16	0,15	cyclictest	2373484	-21	latency_hist	12:33:10	7
1635640	99	16	0,15	cyclictest	2133226	-21	latency_hist	10:53:10	7
1635636	99	16	13,2	cyclictest	2045930	-21	grub2-editenv	10:13:33	6
1635632	99	16	14,2	cyclictest	2094887	-21	kworker/u16:0+flush-8:0	10:58:38	5
1635630	99	16	14,2	cyclictest	2094887	-21	kworker/u16:0+flush-8:0	10:38:37	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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