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
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
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rackeslot4s.osadl.org (updated Fri May 22, 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
618649	99	47	44,2	cyclictest	758843	-21	kworker/u8:2+events_unbound	21:25:09	3
618649	99	40	37,2	cyclictest	737885	-21	kworker/u8:3+events_unbound	21:05:15	3
618649	99	39	37,2	cyclictest	607721	-21	kworker/u8:1+events_unbound	19:17:08	3
618626	99	39	32,5	cyclictest	660077	-21	latency_hist	19:50:01	0
618649	99	37	34,2	cyclictest	665818	-21	kworker/u8:0+events_unbound	19:56:09	3
618649	99	37	34,2	cyclictest	634045	-21	kworker/u8:2+events_unbound	19:53:06	3
618642	99	37	31,4	cyclictest	706657	-21	/usr/sbin/munin	20:35:13	2
618636	99	37	30,5	cyclictest	731882	-21	ntpq	20:55:20	1
618649	99	36	33,2	cyclictest	665818	-21	kworker/u8:0+events_unbound	20:20:18	3
618626	99	36	32,3	cyclictest	852892	-21	kworker/u8:3+events_unbound	23:00:19	0
618626	99	35	30,3	cyclictest	665818	-21	kworker/u8:0+flush-259:0	20:20:00	0
618649	99	34	32,2	cyclictest	831749	-21	kworker/u8:4+events_unbound	22:55:24	3
618649	99	34	32,2	cyclictest	831749	-21	kworker/u8:4+events_unbound	22:55:24	3
618649	99	34	31,2	cyclictest	820786	-21	kworker/u8:0+events_unbound	22:40:08	3
618626	99	34	31,2	cyclictest	680920	-21	kworker/u8:4+flush-259:0	20:10:21	0
618649	99	33	30,2	cyclictest	863078	-21	kworker/u8:1+events_unbound	23:25:24	3
618649	99	33	30,2	cyclictest	852892	-21	kworker/u8:3+events_unbound	23:00:20	3
618649	99	33	30,2	cyclictest	665818	-21	kworker/u8:0+events_unbound	20:10:13	3
618649	99	33	29,3	cyclictest	863078	-21	kworker/u8:1+events_unbound	00:12:44	3
618649	99	33	28,2	cyclictest	665818	-21	kworker/u8:0+events_unbound	20:30:14	3
618636	99	33	27,4	cyclictest	889154	-21	/usr/sbin/munin	23:30:15	1
618626	99	33	29,3	cyclictest	949999	-21	kworker/u8:0+flush-259:0	00:30:21	0
618649	99	32	30,2	cyclictest	722030	-21	kworker/u8:2+events_unbound	20:56:09	3
618649	99	32	30,2	cyclictest	634045	-21	kworker/u8:2+events_unbound	20:00:23	3
618649	99	32	29,2	cyclictest	920158	-21	kworker/u8:3+events_unbound	00:05:15	3
618649	99	32	29,2	cyclictest	758383	-21	kworker/u8:1+events_unbound	22:10:22	3
618649	99	32	29,2	cyclictest	613438	-21	kworker/u8:4+events_unbound	19:35:22	3
618642	99	32	26,4	cyclictest	335557	-21	systemd-journal	21:10:01	2
618636	99	32	27,3	cyclictest	852906	-21	/usr/sbin/munin	22:55:15	1
618636	99	32	27,3	cyclictest	852906	-21	/usr/sbin/munin	22:55:15	1
618626	99	32	28,3	cyclictest	702094	-21	kworker/u8:1+events_unbound	20:40:14	0
618626	99	32	28,3	cyclictest	702094	-21	kworker/u8:1+events_unbound	20:40:14	0
618626	99	32	27,3	cyclictest	784774	-21	/usr/sbin/munin	21:50:15	0
618626	99	32	25,2	cyclictest	820786	-21	kworker/u8:0+events_unbound	22:35:16	0
618649	99	31	29,2	cyclictest	702094	-21	kworker/u8:1+events_unbound	20:54:08	3
618649	99	31	29,2	cyclictest	680920	-21	kworker/u8:4+events_unbound	20:26:09	3
618649	99	31	28,2	cyclictest	800712	-21	kworker/u8:4+events_unbound	22:20:21	3
618649	99	31	28,2	cyclictest	722031	-21	kworker/u8:4+events_unbound	21:15:24	3
618649	99	31	28,2	cyclictest	619345	-21	kworker/u8:0+events_unbound	19:30:22	3
618636	99	31	27,3	cyclictest	702094	-21	kworker/u8:1+flush-259:0	20:35:15	1
618626	99	31	28,2	cyclictest	887971	-21	kworker/u8:4+flush-259:0	00:35:25	0
618626	99	31	28,2	cyclictest	769245	-21	kworker/u8:4+events_unbound	21:35:24	0
618626	99	31	28,2	cyclictest	743392	-21	kworker/u8:2+flush-259:0	21:10:21	0
618626	99	31	27,3	cyclictest	722031	-21	kworker/u8:4+flush-259:0	21:00:20	0
618626	99	31	27,3	cyclictest	665818	-21	kworker/u8:0+events_unbound	19:59:59	0
618626	99	31	26,3	cyclictest	863078	-21	kworker/u8:1+events_unbound	23:30:19	0
618626	99	31	26,3	cyclictest	613438	-21	kworker/u8:4+events_unbound	19:15:01	0
618649	99	30	28,2	cyclictest	887971	-21	kworker/u8:4+events_unbound	23:52:39	3
618649	99	30	28,2	cyclictest	665818	-21	kworker/u8:0+events_unbound	21:42:09	3
618649	99	30	27,2	cyclictest	949999	-21	kworker/u8:0+events_unbound	00:31:48	3
618649	99	30	27,2	cyclictest	920158	-21	kworker/u8:3+events_unbound	00:02:39	3
618649	99	30	27,2	cyclictest	665818	-21	kworker/u8:0+events_unbound	20:45:22	3
618649	99	30	26,3	cyclictest	790308	-21	cat	21:55:01	3
618636	99	30	27,2	cyclictest	722031	-21	kworker/u8:4+flush-259:0	20:50:15	1
618636	99	30	27,2	cyclictest	665818	-21	kworker/u8:0+flush-259:0	20:45:15	1
618636	99	30	26,3	cyclictest	863331	-21	apt-get	23:05:12	1
618626	99	30	27,2	cyclictest	607721	-21	kworker/u8:1+events_unbound	19:20:32	0
618649	99	29	26,3	cyclictest	758383	-21	kworker/u8:1+events_unbound	21:47:07	3
618636	99	29	23,5	cyclictest	852461	-21	store	22:55:00	1
618626	99	29	26,2	cyclictest	847138	-21	kworker/u8:0+flush-259:0	23:05:15	0
618626	99	29	26,2	cyclictest	737885	-21	kworker/u8:3+flush-259:0	21:05:25	0
618649	99	28	26,2	cyclictest	920158	-21	kworker/u8:3+events_unbound	00:22:45	3
618649	99	28	26,2	cyclictest	887971	-21	kworker/u8:4+events_unbound	00:15:14	3
618649	99	28	26,2	cyclictest	769245	-21	kworker/u8:4+events_unbound	21:39:06	3
618649	99	28	25,2	cyclictest	887971	-21	kworker/u8:4+events_unbound	23:40:27	3
618636	99	28	25,2	cyclictest	722031	-21	kworker/u8:4+flush-259:0	21:15:27	1
618636	99	28	23,4	cyclictest	660335	-21	apt-get	19:50:10	1
618636	99	28	21,5	cyclictest	335557	-21	systemd-journal	20:10:00	1
618626	99	28	25,2	cyclictest	665818	-21	kworker/u8:0+events_unbound	20:20:14	0
618626	99	28	23,4	cyclictest	722031	-21	kworker/u8:4+events_unbound	21:15:17	0
618649	99	27	25,2	cyclictest	737885	-21	kworker/u8:3+flush-259:0	21:20:28	3
618649	99	27	24,2	cyclictest	887971	-21	kworker/u8:4+events_unbound	23:39:07	3
618649	99	27	24,2	cyclictest	820786	-21	kworker/u8:0+events_unbound	22:35:24	3
618649	99	27	24,2	cyclictest	634045	-21	kworker/u8:2+events_unbound	20:05:17	3
618649	99	27	21,4	cyclictest	878598	-21	latency_hist	23:20:00	3
618642	99	27	22,3	cyclictest	914958	-21	apt-get	23:55:12	2
618626	99	27	24,2	cyclictest	920158	-21	kworker/u8:3+flush-259:0	00:05:21	0
618626	99	27	24,2	cyclictest	863078	-21	kworker/u8:1+flush-259:0	23:40:24	0
618626	99	27	24,2	cyclictest	863078	-21	kworker/u8:1+events_unbound	23:25:22	0
618626	99	27	24,2	cyclictest	758383	-21	kworker/u8:1+events_unbound	22:10:00	0
618626	99	27	23,3	cyclictest	737885	-21	kworker/u8:3+flush-259:0	22:15:20	0
618626	99	27	23,3	cyclictest	619345	-21	kworker/u8:0+flush-259:0	19:40:22	0
618626	99	27	21,4	cyclictest	857842	-21	latency_hist	23:00:00	0
618626	99	27	21,4	cyclictest	857842	-21	latency_hist	23:00:00	0
618649	99	26	24,2	cyclictest	887971	-21	kworker/u8:4+events_unbound	00:35:07	3
618649	99	26	24,2	cyclictest	820786	-21	kworker/u8:0+events_unbound	22:32:10	3
618649	99	26	23,2	cyclictest	665818	-21	kworker/u8:0+events_unbound	20:36:08	3
618649	99	26	23,2	cyclictest	613438	-21	kworker/u8:4+events_unbound	19:25:22	3
618649	99	26	21,4	cyclictest	748318	-21	latency_hist	21:15:01	3
618642	99	26	21,4	cyclictest	758383	-21	kworker/u8:1+flush-259:0	22:10:25	2
618636	99	26	22,3	cyclictest	887971	-21	kworker/u8:4+flush-259:0	00:00:17	1
618636	99	26	20,4	cyclictest	863059	-21	latency_hist	23:05:00	1
618636	99	26	20,4	cyclictest	335557	-21	systemd-journal	21:28:07	1
618626	99	26	23,2	cyclictest	863078	-21	kworker/u8:1+flush-259:0	23:35:17	0
618626	99	26	23,2	cyclictest	800712	-21	kworker/u8:4+flush-259:0	22:25:24	0
618626	99	26	23,2	cyclictest	722030	-21	kworker/u8:2+events_unbound	20:55:17	0
618626	99	26	20,4	cyclictest	628226	-21	ntpq	19:15:19	0
618649	99	25	23,2	cyclictest	758383	-21	kworker/u8:1+events_unbound	22:15:15	3
618649	99	25	23,2	cyclictest	655140	-21	kworker/u8:3+events_unbound	20:16:03	3
618649	99	25	22,2	cyclictest	837375	-21	kworker/u8:2+events_unbound	22:48:08	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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