OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #4

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8
Special All - All RT - Optimization - Ethernet - Thumbnails - Next

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: ondemand
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack5slot4s.osadl.org (updated Wed Aug 12, 2026 00:44:13)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2313357	2	358	0,2	sleep3	575	-21	kworker/3:2+events	19:47:52	3
2367089	2	94	0,3	chrt	575	-21	kworker/3:2-events	20:42:53	3
2274766	99	61	53,6	cyclictest	275	-21	systemd-journal	22:52:45	0
2274770	99	59	50,5	cyclictest	275	-21	systemd-journal	23:37:45	1
2475597	2	58	0,4	sleep1	0	-21	swapper/1	22:30:00	1
2274766	99	55	50,4	cyclictest	2274108	-21	kworker/u8:2+events_unbound	22:15:00	0
2274766	99	55	45,7	cyclictest	2455656	-21	latency_hist	22:10:01	0
2274766	99	55	44,8	cyclictest	2396011	-21	latency_hist	21:10:00	0
2573850	2	54	0,5	chrt	0	-21	swapper/0	00:07:54	0
2274766	99	52	48,2	cyclictest	2274108	-21	kworker/u8:2+events_unbound	22:17:54	0
2274766	99	52	47,3	cyclictest	2525248	-21	kworker/u8:1+events_unbound	00:03:04	0
2274766	99	52	46,4	cyclictest	2445086	-21	kworker/u8:1+flush-8:0	22:03:03	0
2274766	99	51	45,4	cyclictest	2525248	-21	kworker/u8:1+flush-8:0	23:25:00	0
2274766	99	51	42,7	cyclictest	2534553	-21	ntpq	23:27:54	0
2274770	99	50	31,7	cyclictest	2505421	-21	apt-get	23:00:01	1
2274766	99	50	40,7	cyclictest	2386099	-21	latency_hist	21:00:00	0
2274766	99	49	44,4	cyclictest	2274108	-21	kworker/u8:2+flush-8:0	20:28:02	0
2274770	99	48	39,6	cyclictest	2291432	-21	latency_hist	19:25:01	1
2274766	99	48	44,3	cyclictest	1467226	-21	kworker/u8:4+events_unbound	19:43:01	0
2274766	99	48	42,4	cyclictest	2274108	-21	kworker/u8:2+events_unbound	21:47:50	0
2274766	99	48	36,9	cyclictest	275	-21	systemd-journal	22:25:00	0
2274770	99	47	38,7	cyclictest	275	-21	systemd-journal	20:08:20	1
2274766	99	47	41,4	cyclictest	2575501	-21	kworker/u8:3+flush-8:0	00:12:50	0
2274766	99	47	39,6	cyclictest	2316447	-21	latency_hist	19:50:00	0
2274770	99	46	39,5	cyclictest	2560056	-21	apt-get	23:55:01	1
2274770	99	46	38,6	cyclictest	275	-21	systemd-journal	23:50:00	1
2274770	99	46	34,9	cyclictest	275	-21	systemd-journal	19:11:20	1
2274766	99	46	40,4	cyclictest	2274108	-21	kworker/u8:2+flush-8:0	23:07:56	0
2274766	99	46	39,5	cyclictest	2445086	-21	kworker/u8:1+flush-8:0	22:48:00	0
2274766	99	46	38,6	cyclictest	2274108	-21	kworker/u8:2+flush-8:0	21:42:58	0
2274766	99	46	36,7	cyclictest	2296369	-21	latency_hist	19:30:01	0
2365531	2	45	0,1	sleep1	2365530	-21	selinux_avcstat	20:38:01	1
2274770	99	45	38,5	cyclictest	2440549	-21	latency_hist	21:55:01	1
2274766	99	45	39,4	cyclictest	2301366	-21	kworker/u8:1+events_unbound	20:47:44	0
2274766	99	45	38,4	cyclictest	2525248	-21	kworker/u8:1+flush-8:0	23:52:53	0
2274766	99	45	37,6	cyclictest	1467226	-21	kworker/u8:4+flush-8:0	21:52:55	0
2274766	99	45	31,4	cyclictest	1467226	-21	kworker/u8:4+events_unbound	22:38:03	0
2274766	99	45	31,4	cyclictest	1467226	-21	kworker/u8:4+events_unbound	22:38:03	0
2274770	99	44	38,4	cyclictest	2416249	-21	/usr/sbin/munin	21:33:03	1
2274766	99	44	39,4	cyclictest	2274108	-21	kworker/u8:2+flush-8:0	21:28:04	0
2274766	99	44	37,5	cyclictest	1467226	-21	kworker/u8:4+events_unbound	19:15:02	0
2274766	99	44	35,7	cyclictest	2274108	-21	kworker/u8:2+flush-8:0	21:22:58	0
2274766	99	43	38,4	cyclictest	2274108	-21	kworker/u8:2+flush-8:0	19:38:01	0
2274766	99	43	34,7	cyclictest	2506374	-21	diskstats	23:02:46	0
2274770	99	42	36,4	cyclictest	275	-21	systemd-journal	23:02:45	1
2274766	99	42	38,3	cyclictest	2301366	-21	kworker/u8:1+events_unbound	20:43:06	0
2274772	99	41	31,8	cyclictest	275	-21	systemd-journal	23:45:00	2
2274770	99	41	34,5	cyclictest	2585142	-21	latency_hist	00:20:01	1
2274766	99	41	35,4	cyclictest	2565321	-21	kworker/u8:0+events_unbound	00:22:47	0
2274766	99	41	34,5	cyclictest	1467226	-21	kworker/u8:4+events_unbound	20:02:59	0
2274770	99	40	33,5	cyclictest	2511056	-21	apt-get	23:07:41	1
2274770	99	40	33,5	cyclictest	2311970	-21	apt-get	19:47:43	1
2274766	99	40	35,4	cyclictest	2445086	-21	kworker/u8:1+events_unbound	22:27:49	0
2274766	99	40	35,3	cyclictest	2565321	-21	kworker/u8:0+flush-8:0	00:27:53	0
2274766	99	40	34,4	cyclictest	2399212	-21	kworker/u8:1+events_unbound	21:20:01	0
2274766	99	40	33,5	cyclictest	1467226	-21	kworker/u8:4+events_unbound	20:00:01	0
2274772	99	39	29,8	cyclictest	2475366	-21	apt-get	22:30:00	2
2274770	99	39	32,5	cyclictest	2301803	-21	apt-get	19:37:43	1
2274770	99	39	30,7	cyclictest	2405218	-21	ntpq	21:17:58	1
2274766	99	39	33,4	cyclictest	1467226	-21	kworker/u8:4+events_unbound	21:02:57	0
2270092	2	39	4,10	sleep1	0	-21	swapper/1	19:07:31	1
2274772	99	38	33,4	cyclictest	2274108	-21	kworker/u8:2+flush-8:0	20:43:03	2
2274770	99	38	30,6	cyclictest	275	-21	systemd-journal	00:26:34	1
2274770	99	38	30,6	cyclictest	2336898	-21	apt-get	20:12:51	1
2274770	99	38	29,6	cyclictest	275	-21	systemd-journal	22:31:45	1
2274766	99	38	33,4	cyclictest	1467226	-21	kworker/u8:4+events_unbound	20:07:56	0
2274766	99	38	30,6	cyclictest	275	-21	systemd-journal	00:00:00	0
2274770	99	37	30,5	cyclictest	2525873	-21	apt-get	23:22:43	1
2274766	99	37	32,3	cyclictest	2274108	-21	kworker/u8:2+events_unbound	21:37:53	0
2274766	99	37	31,4	cyclictest	2274108	-21	kworker/u8:2+events_unbound	20:22:54	0
2274766	99	37	30,5	cyclictest	1467226	-21	kworker/u8:4+flush-8:0	19:22:57	0
2380828	2	36	0,3	chrt	575	-21	kworker/3:2+events	20:53:04	3
2274772	99	36	30,4	cyclictest	1467226	-21	kworker/u8:4+events_unbound	23:20:01	2
2274770	99	36	30,4	cyclictest	2415093	-21	ntpq	21:27:59	1
2274766	99	36	31,3	cyclictest	2301366	-21	kworker/u8:1+flush-8:0	20:17:54	0
2274766	99	36	17,11	cyclictest	2274108	-21	kworker/u8:2+events_unbound	23:17:51	0
2274770	99	35	26,6	cyclictest	275	-21	systemd-journal	22:23:45	1
2274766	99	35	31,3	cyclictest	2490402	-21	idleruntime-cro	22:45:00	0
2274766	99	35	29,4	cyclictest	1467226	-21	kworker/u8:4+events_unbound	22:57:48	0
2274766	99	35	28,5	cyclictest	1467226	-21	kworker/u8:4+flush-8:0	23:37:56	0
2274772	99	34	28,4	cyclictest	2450465	-21	awk	22:05:00	2
2274772	99	34	26,6	cyclictest	2291433	-21	turbostat.cron	19:25:00	2
2274772	99	34	25,6	cyclictest	2400974	-21	cat	21:15:00	2
2274772	99	34	24,7	cyclictest	2505796	-21	cat	23:00:01	2
2274766	99	34	27,5	cyclictest	2274108	-21	kworker/u8:2+flush-8:0	21:32:57	0
2274766	99	34	26,6	cyclictest	2321382	-21	latency_hist	19:55:00	0
2274772	99	33	27,4	cyclictest	2376103	-21	gpgv	20:50:01	2
2274770	99	33	1,29	cyclictest	1	-21	systemd	23:30:00	1
2274766	99	33	29,3	cyclictest	2274108	-21	kworker/u8:2+events_unbound	20:10:52	0
2274766	99	33	28,3	cyclictest	2274108	-21	kworker/u8:2+flush-8:0	19:12:59	0
2274766	99	33	27,4	cyclictest	2274108	-21	kworker/u8:2+events_unbound	21:12:53	0
2274770	99	32	24,6	cyclictest	275	-21	systemd-journal	00:40:00	1
2274766	99	32	27,4	cyclictest	1467226	-21	kworker/u8:4+flush-8:0	23:12:49	0
2274766	99	32	26,4	cyclictest	2525248	-21	kworker/u8:1+events_unbound	23:47:48	0
2274766	99	32	26,4	cyclictest	2274108	-21	kworker/u8:2+flush-8:0	21:57:50	0
2274770	99	31	27,2	cyclictest	2383776	-21	kthreadcore	20:57:52	1
2274770	99	31	23,6	cyclictest	2426267	-21	aten2_r5power_p	21:42:45	1
2274766	99	31	27,2	cyclictest	2525248	-21	kworker/u8:1+events_unbound	00:17:51	0
2274766	99	31	26,4	cyclictest	2525248	-21	kworker/u8:1+flush-8:0	00:37:50	0
2274766	99	31	25,5	cyclictest	1467226	-21	kworker/u8:4+events_unbound	20:53:03	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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