OSADL QA Farm on Real-time of Mainline Linux

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

Characteristics of the 100 highest latencies:

System rackeslot4s.osadl.org (updated Thu May 14, 2026 00:44:06)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
77264	99	49	45,3	cyclictest	223204	-21	kworker/u8:2+events_unbound	21:30:13	2
77264	99	47	44,2	cyclictest	109000	-21	kworker/u8:0+events_unbound	20:25:21	2
77264	99	47	43,3	cyclictest	109000	-21	kworker/u8:0+events_unbound	19:56:53	2
77264	99	47	41,3	cyclictest	389186	-21	kworker/u8:0+events_unbound	00:20:23	2
77264	99	45	41,3	cyclictest	109000	-21	kworker/u8:0+flush-259:0	19:46:54	2
77264	99	44	41,2	cyclictest	223204	-21	kworker/u8:2+events_unbound	23:05:23	2
77264	99	44	41,2	cyclictest	171092	-21	kworker/u8:1+events_unbound	20:42:03	2
77262	99	44	41,2	cyclictest	212908	-21	kworker/u8:3+flush-259:0	22:20:20	0
77262	99	44	40,3	cyclictest	181497	-21	kworker/u8:2+events_unbound	21:00:21	0
77267	99	43	36,5	cyclictest	114113	-21	latency_hist	19:45:01	3
77264	99	43	39,3	cyclictest	98707	-21	kworker/u8:1+events_unbound	19:41:44	2
77264	99	42	39,2	cyclictest	98707	-21	kworker/u8:1+events_unbound	19:30:23	2
77264	99	42	39,2	cyclictest	212908	-21	kworker/u8:3+events_unbound	22:05:16	2
77262	99	42	41,1	cyclictest	223257	-21	kworker/0:0+pm	22:04:28	0
77264	99	41	38,3	cyclictest	98707	-21	kworker/u8:1+events_unbound	19:35:43	2
77264	99	41	38,2	cyclictest	305735	-21	kworker/u8:1+events_unbound	23:35:24	2
77264	99	40	37,2	cyclictest	223204	-21	kworker/u8:2+events_unbound	21:54:43	2
77264	99	40	37,2	cyclictest	155759	-21	kworker/u8:2+events_unbound	20:30:45	2
77264	99	40	37,2	cyclictest	140298	-21	kworker/u8:3+events_unbound	20:47:43	2
77264	99	40	36,3	cyclictest	368092	-21	kworker/u8:2+events_unbound	00:14:43	2
77267	99	39	35,3	cyclictest	305735	-21	kworker/u8:1+flush-259:0	23:55:00	3
77267	99	38	35,2	cyclictest	82492	-21	gpgv	19:15:00	3
77267	99	38	35,2	cyclictest	326823	-21	kworker/u8:3+flush-259:0	23:49:59	3
77264	99	38	36,2	cyclictest	155759	-21	kworker/u8:2+events_unbound	20:37:02	2
77264	99	38	35,2	cyclictest	305735	-21	kworker/u8:1+events_unbound	23:15:15	2
77264	99	38	35,2	cyclictest	223204	-21	kworker/u8:2+flush-259:0	22:52:44	2
77264	99	38	34,3	cyclictest	98707	-21	kworker/u8:1+events_unbound	20:15:24	2
77262	99	38	35,2	cyclictest	155759	-21	kworker/u8:2+flush-259:0	20:26:59	0
77264	99	37	35,2	cyclictest	223204	-21	kworker/u8:2+events_unbound	22:40:22	2
77264	99	37	34,2	cyclictest	305735	-21	kworker/u8:1+events_unbound	23:12:45	2
77264	99	37	34,2	cyclictest	212908	-21	kworker/u8:3+events_unbound	21:56:44	2
77262	99	37	31,4	cyclictest	398988	-21	ntpq	00:15:20	0
77264	99	36	34,2	cyclictest	98707	-21	kworker/u8:1+events_unbound	20:01:42	2
77264	99	36	33,2	cyclictest	285013	-21	kworker/u8:0+events_unbound	22:36:45	2
77262	99	36	32,3	cyclictest	326823	-21	kworker/u8:3+events_unbound	23:35:01	0
77264	99	35	33,2	cyclictest	212908	-21	kworker/u8:3+events_unbound	22:45:23	2
77264	99	35	33,2	cyclictest	109000	-21	kworker/u8:0+events_unbound	19:50:12	2
77264	99	35	32,2	cyclictest	61950	-21	kworker/u8:3+events_unbound	19:28:44	2
77264	99	35	32,2	cyclictest	212908	-21	kworker/u8:3+events_unbound	22:19:43	2
77262	99	35	33,2	cyclictest	98707	-21	kworker/u8:1+flush-259:0	20:10:00	0
77262	99	35	33,2	cyclictest	98707	-21	kworker/u8:1+flush-259:0	20:09:59	0
77262	99	35	32,2	cyclictest	98707	-21	kworker/u8:1+flush-259:0	19:50:19	0
77262	99	35	31,3	cyclictest	61950	-21	kworker/u8:3+events_unbound	19:17:44	0
77264	99	34	31,2	cyclictest	109000	-21	kworker/u8:0+events_unbound	21:10:22	2
77264	99	34	30,3	cyclictest	212908	-21	kworker/u8:3+events_unbound	22:58:44	2
77262	99	34	31,2	cyclictest	61950	-21	kworker/u8:3+events_unbound	19:35:23	0
77267	99	33	29,3	cyclictest	410191	-21	gpgv	00:30:00	3
77267	99	33	29,3	cyclictest	410191	-21	gpgv	00:30:00	3
77267	99	33	27,4	cyclictest	509	-21	rs:main		3
77267	99	33	26,5	cyclictest	207719	-21	latency_hist	21:15:01	3
77263	99	33	27,4	cyclictest	252	-21	systemd-journal	20:12:43	1
77262	99	33	30,2	cyclictest	223204	-21	kworker/u8:2+flush-259:0	21:55:21	0
77262	99	33	30,2	cyclictest	223204	-21	kworker/u8:2+flush-259:0	21:50:20	0
77264	99	32	30,2	cyclictest	326823	-21	kworker/u8:3+events_unbound	23:30:43	2
77263	99	32	29,2	cyclictest	155759	-21	kworker/u8:2+flush-259:0	20:25:44	1
77263	99	32	28,3	cyclictest	399758	-21	kworker/u8:1+flush-259:0	00:21:44	1
77262	99	32	29,2	cyclictest	98707	-21	kworker/u8:1+events_unbound	20:00:43	0
77262	99	32	29,2	cyclictest	410819	-21	kworker/u8:3+events_unbound	00:36:45	0
77262	99	32	29,2	cyclictest	109000	-21	kworker/u8:0+events_unbound	19:55:19	0
77262	99	32	28,3	cyclictest	368092	-21	kworker/u8:2+flush-259:0	00:10:18	0
77267	99	31	27,3	cyclictest	223204	-21	kworker/u8:2+flush-259:0	22:10:14	3
77264	99	31	29,2	cyclictest	305735	-21	kworker/u8:1+events_unbound	23:03:44	2
77264	99	31	28,2	cyclictest	326823	-21	kworker/u8:3+events_unbound	23:21:44	2
77264	99	31	28,2	cyclictest	197417	-21	kworker/u8:1+events_unbound	21:15:16	2
77263	99	31	29,1	cyclictest	259150	-21	fwupd	22:04:28	1
77263	99	31	24,6	cyclictest	109000	-21	kworker/u8:0+flush-259:0	21:20:14	1
77262	99	31	28,3	cyclictest	212908	-21	kworker/u8:3+events_unbound	21:32:45	0
77262	99	31	28,2	cyclictest	410819	-21	kworker/u8:3+events_unbound	00:32:44	0
77262	99	31	28,2	cyclictest	109000	-21	kworker/u8:0+flush-259:0	20:30:16	0
77262	99	31	27,3	cyclictest	305735	-21	kworker/u8:1+events_unbound	23:28:44	0
77267	99	30	25,4	cyclictest	285013	-21	kworker/u8:0+flush-259:0	22:40:00	3
77267	99	30	25,3	cyclictest	394426	-21	gpgv	00:15:00	3
77267	99	30	24,4	cyclictest	275153	-21	diskstats	22:20:13	3
77264	99	30	27,2	cyclictest	326823	-21	kworker/u8:3+flush-259:0	00:05:26	2
77264	99	30	27,2	cyclictest	212908	-21	kworker/u8:3+events_unbound	22:25:20	2
77264	99	30	26,3	cyclictest	326823	-21	kworker/u8:3+flush-259:0	23:25:15	2
77263	99	30	27,2	cyclictest	72152	-21	kworker/u8:0+events_unbound	19:20:24	1
77263	99	30	26,3	cyclictest	155759	-21	kworker/u8:2+events_unbound	20:32:44	1
77263	99	30	23,5	cyclictest	154815	-21	ntpq	20:20:20	1
77262	99	30	24,2	cyclictest	197417	-21	kworker/u8:1+events_unbound	21:15:18	0
77264	99	29	27,2	cyclictest	326823	-21	kworker/u8:3+events_unbound	23:43:45	2
77264	99	29	27,2	cyclictest	109000	-21	kworker/u8:0+flush-259:0	21:05:25	2
77263	99	29	26,2	cyclictest	98707	-21	kworker/u8:1+flush-259:0	19:51:54	1
77263	99	29	25,3	cyclictest	140298	-21	kworker/u8:3+events_unbound	20:55:21	1
77263	99	29	24,4	cyclictest	410852	-21	apt-get	00:30:11	1
77263	99	29	24,4	cyclictest	252	-21	systemd-journal	21:20:00	1
77262	99	29	26,2	cyclictest	305735	-21	kworker/u8:1+flush-259:0	23:35:21	0
77262	99	29	24,3	cyclictest	252	-21	systemd-journal	20:19:44	0
77267	99	28	23,4	cyclictest	368092	-21	kworker/u8:2+flush-259:0	23:55:16	3
77267	99	28	22,4	cyclictest	326776	-21	latency_hist	23:10:01	3
77263	99	28	22,5	cyclictest	135399	-21	apt-get	20:05:11	1
77263	99	28	22,5	cyclictest	135399	-21	apt-get	20:05:11	1
77263	99	28	21,5	cyclictest	242884	-21	ntpq	21:45:21	1
77262	99	28	26,2	cyclictest	109000	-21	kworker/u8:0+events_unbound	19:45:44	0
77262	99	28	25,2	cyclictest	98707	-21	kworker/u8:1+flush-259:0	19:30:44	0
77262	99	28	25,2	cyclictest	285013	-21	kworker/u8:0+flush-259:0	22:30:19	0
77262	99	28	25,2	cyclictest	109000	-21	kworker/u8:0+events_unbound	21:06:44	0
77262	99	28	21,5	cyclictest	316872	-21	diskstats	23:00:14	0
77267	99	27	22,4	cyclictest	368092	-21	kworker/u8:2+flush-259:0	00:10:01	3
77267	99	27	20,5	cyclictest	192231	-21	latency_hist	21:00:01	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2021-09-01 - 00:34