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 Thu Jun 25, 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
487559	99	56	51,3	cyclictest	509	-21	rs:main		1
487571	99	50	45,3	cyclictest	653384	-21	latency_hist	21:50:01	3
487563	99	50	44,4	cyclictest	767870	-21	latency_hist	23:40:01	2
487571	99	47	41,4	cyclictest	335557	-21	systemd-journal	20:25:13	3
487559	99	45	39,4	cyclictest	768104	-21	/usr/sbin/munin	23:40:14	1
487555	99	44	38,4	cyclictest	335557	-21	systemd-journal	23:05:01	0
487555	99	44	32,10	cyclictest	335557	-21	systemd-journal	22:00:42	0
487555	99	43	36,5	cyclictest	548903	-21	ntpq	20:05:21	0
487563	99	42	36,4	cyclictest	509	-21	rs:main		2
487563	99	42	35,5	cyclictest	335557	-21	systemd-journal	22:33:41	2
487555	99	41	37,2	cyclictest	21	1	rcuc/0	21:55:01	0
487555	99	41	29,11	cyclictest	752055	-21	gpgv	23:25:00	0
487571	99	40	35,4	cyclictest	658499	-21	apt-get	21:55:00	3
487559	99	40	36,3	cyclictest	648448	-21	kworker/u8:3+flush-259:0	23:25:00	1
487571	99	39	35,3	cyclictest	648448	-21	kworker/u8:3+flush-259:0	22:05:13	3
487563	99	39	35,3	cyclictest	591209	-21	kworker/u8:4+flush-259:0	21:00:19	2
487563	99	39	34,4	cyclictest	565196	-21	kworker/u8:1+events_unbound	20:30:19	2
487559	99	39	35,3	cyclictest	555140	-21	/usr/sbin/munin	20:15:15	1
487571	99	38	32,4	cyclictest	549753	-21	latency_hist	20:10:00	3
487571	99	38	32,4	cyclictest	544614	-21	latency_hist	20:05:00	3
487571	99	37	32,4	cyclictest	513772	-21	cat	19:35:01	3
487559	99	37	34,2	cyclictest	648448	-21	kworker/u8:3+flush-259:0	22:15:01	1
487555	99	36	32,3	cyclictest	690542	-21	apt-get	22:25:12	0
487555	99	36	29,5	cyclictest	704716	-21	ntpq	22:35:19	0
487571	99	35	32,2	cyclictest	591209	-21	kworker/u8:4+flush-259:0	21:05:00	3
487571	99	35	29,4	cyclictest	809022	-21	latency_hist	00:20:01	3
487563	99	35	30,3	cyclictest	621994	-21	kworker/u8:0+flush-259:0	21:35:17	2
487559	99	35	30,3	cyclictest	335557	-21	systemd-journal	00:15:01	1
487559	99	35	29,4	cyclictest	804145	-21	/usr/sbin/munin	00:15:14	1
487559	99	35	29,4	cyclictest	335557	-21	systemd-journal	23:40:00	1
487555	99	35	30,3	cyclictest	560275	-21	apt-get	20:20:12	0
487563	99	34	30,3	cyclictest	778392	-21	kworker/u8:2+flush-259:0	00:00:21	2
487563	99	34	29,4	cyclictest	621994	-21	kworker/u8:0+events_unbound	21:42:43	2
487571	99	33	29,2	cyclictest	711012	-21	kworker/u8:1+flush-259:0	22:55:00	3
487563	99	33	29,3	cyclictest	793633	-21	kworker/u8:1+events_unbound	00:27:54	2
487571	99	32	28,3	cyclictest	680160	-21	kworker/u8:4+flush-259:0	22:35:00	3
487571	99	32	28,3	cyclictest	565196	-21	kworker/u8:1+events_unbound	20:50:18	3
487571	99	32	28,3	cyclictest	565196	-21	kworker/u8:1+events_unbound	20:50:18	3
487563	99	32	28,3	cyclictest	648448	-21	kworker/u8:3+events_unbound	22:15:23	2
487563	99	32	28,3	cyclictest	591209	-21	kworker/u8:4+flush-259:0	21:05:20	2
487563	99	32	27,4	cyclictest	705667	-21	kworker/u8:0+events_unbound	23:46:37	2
487563	99	32	27,3	cyclictest	580768	-21	kworker/u8:2+events_unbound	21:18:44	2
487563	99	32	26,4	cyclictest	680159	-21	kworker/u8:2+events_unbound	22:37:44	2
487559	99	32	29,2	cyclictest	721105	-21	kworker/u8:2+flush-259:0	23:10:00	1
487571	99	31	25,4	cyclictest	513445	-21	cp	19:35:01	3
487563	99	31	28,2	cyclictest	565196	-21	kworker/u8:1+flush-259:0	20:55:43	2
487563	99	31	27,3	cyclictest	565196	-21	kworker/u8:1+events_unbound	21:55:22	2
487563	99	31	25,4	cyclictest	757829	-21	apt-get	23:30:10	2
487563	99	31	25,4	cyclictest	493054	-21	diskstats	19:15:13	2
487571	99	30	26,3	cyclictest	621994	-21	kworker/u8:0+events_unbound	21:40:16	3
487563	99	30	26,3	cyclictest	524014	-21	kworker/u8:3+events_unbound	19:55:43	2
487563	99	29	25,3	cyclictest	621994	-21	kworker/u8:0+events_unbound	21:54:43	2
487571	99	28	24,3	cyclictest	674367	-21	kworker/u8:0+flush-259:0	22:15:42	3
487563	99	28	24,3	cyclictest	731635	-21	kworker/u8:1+events_unbound	23:20:25	2
487563	99	28	24,3	cyclictest	565196	-21	kworker/u8:1+events_unbound	21:22:44	2
487563	99	28	24,3	cyclictest	508326	-21	kworker/u8:1+events_unbound	19:54:42	2
487563	99	28	24,3	cyclictest	472390	-21	kworker/u8:4+events_unbound	19:13:43	2
487563	99	28	23,4	cyclictest	793633	-21	kworker/u8:1+flush-259:0	00:30:23	2
487563	99	28	23,4	cyclictest	565196	-21	kworker/u8:1+events_unbound	20:35:13	2
487555	99	28	22,4	cyclictest	533445	-21	ntpq	19:50:21	0
487571	99	27	23,3	cyclictest	731635	-21	kworker/u8:1+events_unbound	23:45:15	3
487563	99	27	23,3	cyclictest	721106	-21	kworker/u8:4+flush-259:0	22:55:20	2
487563	99	27	23,3	cyclictest	680160	-21	kworker/u8:4+events_unbound	22:25:22	2
487563	99	27	23,3	cyclictest	534362	-21	kworker/u8:0+flush-259:0	20:20:15	2
487563	99	27	22,4	cyclictest	524014	-21	kworker/u8:3+flush-259:0	20:10:24	2
487563	99	27	21,4	cyclictest	674351	-21	latency_hist	22:10:01	2
487555	99	27	21,4	cyclictest	633020	-21	apt-get	21:30:11	0
487571	99	26	23,2	cyclictest	524014	-21	kworker/u8:3+events_unbound	20:20:24	3
487571	99	26	23,2	cyclictest	458196	-21	kworker/u8:2+events_unbound	19:25:20	3
487563	99	26	23,2	cyclictest	508326	-21	kworker/u8:1+flush-259:0	19:40:24	2
487559	99	26	22,3	cyclictest	778392	-21	kworker/u8:2+events_unbound	00:05:19	1
487559	99	26	22,3	cyclictest	680159	-21	kworker/u8:2+events_unbound	22:35:15	1
487571	99	25	22,2	cyclictest	648448	-21	kworker/u8:3+flush-259:0	22:20:16	3
487563	99	25	21,3	cyclictest	705667	-21	kworker/u8:0+events_unbound	23:50:22	2
487563	99	25	21,3	cyclictest	648448	-21	kworker/u8:3+events_unbound	23:10:15	2
487559	99	25	21,3	cyclictest	680160	-21	kworker/u8:4+flush-259:0	22:30:00	1
487559	99	25	21,3	cyclictest	565196	-21	kworker/u8:1+events_unbound	21:10:16	1
487559	99	25	21,3	cyclictest	508326	-21	kworker/u8:1+flush-259:0	19:55:23	1
487559	99	25	19,4	cyclictest	647377	-21	ntpq	21:40:22	1
487555	99	25	18,5	cyclictest	491749	-21	ntpq	19:10:20	0
487571	99	24	20,3	cyclictest	555122	-21	kworker/u8:2+flush-259:0	20:15:15	3
487563	99	24	21,2	cyclictest	565196	-21	kworker/u8:1+events_unbound	21:10:22	2
487563	99	24	21,2	cyclictest	458196	-21	kworker/u8:2+events_unbound	19:45:14	2
487563	99	24	20,3	cyclictest	705667	-21	kworker/u8:0+events_unbound	23:25:22	2
487563	99	24	20,3	cyclictest	580768	-21	kworker/u8:2+events_unbound	20:45:22	2
487559	99	24	21,2	cyclictest	508326	-21	kworker/u8:1+events_unbound	19:40:14	1
487559	99	24	20,3	cyclictest	705667	-21	kworker/u8:0+events_unbound	22:55:20	1
487555	99	24	20,3	cyclictest	458196	-21	kworker/u8:2+events_unbound	19:35:01	0
487555	99	24	17,5	cyclictest	509	-21	rs:main		0
487571	99	23	20,2	cyclictest	591209	-21	kworker/u8:4+flush-259:0	21:20:22	3
487571	99	23	19,3	cyclictest	492637	-21	latency_hist	19:15:01	3
487571	99	23	18,4	cyclictest	565196	-21	kworker/u8:1+flush-259:0	22:10:16	3
487563	99	23	19,3	cyclictest	731635	-21	kworker/u8:1+events_unbound	23:09:44	2
487563	99	23	19,3	cyclictest	534362	-21	kworker/u8:0+flush-259:0	20:40:20	2
487563	99	23	19,3	cyclictest	458196	-21	kworker/u8:2+events_unbound	19:30:22	2
487563	99	23	18,3	cyclictest	731635	-21	kworker/u8:1+flush-259:0	23:40:24	2
487559	99	23	19,3	cyclictest	648448	-21	kworker/u8:3+flush-259:0	22:00:25	1
487571	99	22	20,1	cyclictest	778392	-21	kworker/u8:2+events_unbound	00:00:21	3
487571	99	22	19,3	cyclictest	534362	-21	kworker/u8:0+flush-259:0	20:40:17	3
487571	99	22	19,2	cyclictest	731635	-21	kworker/u8:1+flush-259:0	23:40:01	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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