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 Tue Jun 09, 2026 12:44:06)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3188375	99	44	41,2	cyclictest	3260736	-21	kworker/u8:1+events_unbound	09:50:00	3
3188367	99	42	38,3	cyclictest	3438183	-21	kworker/u8:4+flush-259:0	11:55:00	1
3188365	99	42	38,3	cyclictest	3453487	-21	kworker/u8:0+flush-259:0	11:45:00	0
3188375	99	37	34,2	cyclictest	3515709	-21	kworker/u8:3+events_unbound	12:30:00	3
3188375	99	37	33,3	cyclictest	3438183	-21	kworker/u8:4+flush-259:0	11:10:21	3
3188367	99	37	34,2	cyclictest	3494823	-21	kworker/u8:0+flush-259:0	12:15:24	1
3188375	99	34	31,2	cyclictest	3494823	-21	kworker/u8:0+flush-259:0	12:10:25	3
3188375	99	34	31,2	cyclictest	3250735	-21	kworker/u8:2+events_unbound	08:30:19	3
3188367	99	34	31,2	cyclictest	3406644	-21	kworker/u8:2+flush-259:0	11:05:21	1
3188367	99	34	31,2	cyclictest	3369733	-21	kworker/u8:1+events_unbound	10:15:20	1
3188367	99	34	31,2	cyclictest	3188357	-21	kworker/u8:1+flush-259:0	07:15:23	1
3188367	99	34	30,3	cyclictest	3438183	-21	kworker/u8:4+events_unbound	11:20:23	1
3188365	99	34	28,5	cyclictest	3275529	-21	ntpq	08:30:19	0
3188375	99	33	30,2	cyclictest	3369733	-21	kworker/u8:1+events_unbound	10:15:16	3
3188375	99	33	30,2	cyclictest	3260736	-21	kworker/u8:1+flush-259:0	08:55:16	3
3188375	99	33	29,3	cyclictest	3479623	-21	kworker/u8:1+events_unbound	12:00:22	3
3188375	99	33	29,3	cyclictest	3479623	-21	kworker/u8:1+events_unbound	12:00:22	3
3188367	99	33	30,2	cyclictest	3260736	-21	kworker/u8:1+flush-259:0	08:40:01	1
3188367	99	33	29,2	cyclictest	3354413	-21	kworker/u8:0+flush-259:0	10:00:19	1
3188375	99	32	29,2	cyclictest	3494823	-21	kworker/u8:0+flush-259:0	12:10:00	3
3188375	99	32	29,2	cyclictest	3494823	-21	kworker/u8:0+flush-259:0	12:10:00	3
3188375	99	32	28,3	cyclictest	3250735	-21	kworker/u8:2+flush-259:0	08:25:20	3
3188367	99	32	27,2	cyclictest	3386252	-21	kworker/u8:0+flush-259:0	10:40:16	1
3188370	99	31	25,4	cyclictest	3422508	-21	latency_hist	10:55:01	2
3188365	99	31	0,30	cyclictest	509	-21	rs:main		0
3188375	99	30	27,2	cyclictest	3401072	-21	kworker/u8:1+flush-259:0	10:50:20	3
3188375	99	30	27,2	cyclictest	3354413	-21	kworker/u8:0+events_unbound	10:10:18	3
3188375	99	30	27,2	cyclictest	3188357	-21	kworker/u8:1+events_unbound	07:40:19	3
3188375	99	30	24,2	cyclictest	3453487	-21	kworker/u8:0+events_unbound	11:30:20	3
3188375	99	29	26,2	cyclictest	3369940	-21	kworker/u8:3+events_unbound	10:25:21	3
3188375	99	29	26,2	cyclictest	3260736	-21	kworker/u8:1+flush-259:0	09:15:15	3
3188375	99	29	23,5	cyclictest	335557	-21	systemd-journal	10:50:01	3
3188367	99	29	26,2	cyclictest	3494823	-21	kworker/u8:0+flush-259:0	12:05:20	1
3188367	99	29	26,2	cyclictest	3494823	-21	kworker/u8:0+flush-259:0	12:05:20	1
3188367	99	29	26,2	cyclictest	3260736	-21	kworker/u8:1+flush-259:0	09:00:15	1
3188367	99	29	26,2	cyclictest	3250735	-21	kworker/u8:2+flush-259:0	08:30:21	1
3188367	99	29	26,2	cyclictest	3128691	-21	kworker/u8:2+flush-259:0	07:10:23	1
3188367	99	29	23,2	cyclictest	3297100	-21	kworker/u8:2+events_unbound	09:10:24	1
3188365	99	29	22,5	cyclictest	3317702	-21	latency_hist	09:15:00	0
3188375	99	28	26,1	cyclictest	3369940	-21	kworker/u8:3+flush-259:0	10:20:26	3
3188375	99	28	25,2	cyclictest	3260736	-21	kworker/u8:1+flush-259:0	08:24:29	3
3188370	99	28	23,3	cyclictest	3464000	-21	/usr/sbin/munin	11:35:22	2
3188367	99	28	25,2	cyclictest	3297100	-21	kworker/u8:2+events_unbound	09:50:21	1
3188367	99	28	25,2	cyclictest	3128691	-21	kworker/u8:2+events_unbound	07:50:23	1
3188367	99	28	23,3	cyclictest	1132699	-21	kworker/u8:3+events_unbound	08:05:18	1
3188375	99	27	25,2	cyclictest	3260736	-21	kworker/u8:1+flush-259:0	09:40:15	3
3188375	99	27	24,2	cyclictest	3479623	-21	kworker/u8:1+events_unbound	11:55:24	3
3188375	99	27	24,2	cyclictest	3354413	-21	kworker/u8:0+flush-259:0	10:00:20	3
3188367	99	27	24,2	cyclictest	3494823	-21	kworker/u8:0+events_unbound	12:25:00	1
3188367	99	27	23,3	cyclictest	3369733	-21	kworker/u8:1+events_unbound	10:15:00	1
3188367	99	27	23,3	cyclictest	335557	-21	systemd-journal	07:35:29	1
3188367	99	27	22,3	cyclictest	3188357	-21	kworker/u8:1+events_unbound	07:55:26	1
3188365	99	27	21,4	cyclictest	3214351	-21	/usr/sbin/munin	07:35:18	0
3188375	99	26	23,2	cyclictest	3128691	-21	kworker/u8:2+flush-259:0	07:45:21	3
3188375	99	26	23,2	cyclictest	3128691	-21	kworker/u8:2+events_unbound	07:20:23	3
3188370	99	26	22,3	cyclictest	509	-21	rs:main		2
3188370	99	26	19,5	cyclictest	3391180	-21	latency_hist	10:25:01	2
3188367	99	26	23,2	cyclictest	3401072	-21	kworker/u8:1+events_unbound	10:50:26	1
3188367	99	26	23,2	cyclictest	3401072	-21	kworker/u8:1+events_unbound	10:50:01	1
3188365	99	26	22,3	cyclictest	335557	-21	systemd-journal	12:02:28	0
3188365	99	26	22,3	cyclictest	335557	-21	systemd-journal	12:02:28	0
3188375	99	25	23,2	cyclictest	3406644	-21	kworker/u8:2+flush-259:0	10:40:26	3
3188375	99	25	23,2	cyclictest	3260736	-21	kworker/u8:1+events_unbound	08:45:24	3
3188375	99	25	22,2	cyclictest	3438183	-21	kworker/u8:4+flush-259:0	11:45:20	3
3188375	99	25	22,2	cyclictest	3260736	-21	kworker/u8:1+flush-259:0	09:00:21	3
3188375	99	25	22,2	cyclictest	3128691	-21	kworker/u8:2+flush-259:0	07:35:22	3
3188370	99	25	19,4	cyclictest	335557	-21	systemd-journal	11:00:00	2
3188367	99	25	22,2	cyclictest	3453487	-21	kworker/u8:0+events_unbound	11:30:27	1
3188367	99	25	22,2	cyclictest	3422129	-21	kworker/u8:3+events_unbound	11:45:32	1
3188367	99	25	20,2	cyclictest	3188357	-21	kworker/u8:1+flush-259:0	07:25:20	1
3188367	99	25	19,4	cyclictest	3342635	-21	ntpq	09:35:22	1
3188367	99	25	18,2	cyclictest	3260736	-21	kworker/u8:1+events_unbound	08:50:18	1
3188365	99	25	21,2	cyclictest	3510789	-21	apt-get	12:20:12	0
3188375	99	24	21,2	cyclictest	3354413	-21	kworker/u8:0+events_unbound	10:05:22	3
3188375	99	24	21,2	cyclictest	1132699	-21	kworker/u8:3+events_unbound	08:05:23	3
3188375	99	24	19,3	cyclictest	3256070	-21	/usr/sbin/munin	08:15:16	3
3188370	99	24	20,3	cyclictest	3438183	-21	kworker/u8:4+flush-259:0	11:20:25	2
3188367	99	24	21,2	cyclictest	3386252	-21	kworker/u8:0+flush-259:0	10:25:26	1
3188367	99	24	21,2	cyclictest	3297100	-21	kworker/u8:2+events_unbound	09:20:18	1
3188375	99	23	21,2	cyclictest	3188357	-21	kworker/u8:1+flush-259:0	07:15:15	3
3188375	99	23	21,2	cyclictest	3128691	-21	kworker/u8:2+events_unbound	07:29:40	3
3188375	99	23	21,2	cyclictest	3128691	-21	kworker/u8:2+events_unbound	07:10:15	3
3188370	99	23	19,3	cyclictest	3417144	-21	gpgv	10:50:01	2
3188370	99	23	17,4	cyclictest	3321955	-21	ntpq	09:15:21	2
3188367	99	23	20,2	cyclictest	3453487	-21	kworker/u8:0+events_unbound	11:25:22	1
3188367	99	23	20,2	cyclictest	3406644	-21	kworker/u8:2+events_unbound	10:55:15	1
3188367	99	23	20,2	cyclictest	3260736	-21	kworker/u8:1+flush-259:0	08:20:18	1
3188365	99	23	20,2	cyclictest	3448566	-21	apt-get	11:20:12	0
3188365	99	23	19,3	cyclictest	3225148	-21	apt-get	07:45:12	0
3188365	99	23	17,4	cyclictest	3505598	-21	/usr/sbin/munin	12:15:21	0
3188375	99	22	21,1	cyclictest	3453487	-21	kworker/u8:0+flush-259:0	11:25:15	3
3188375	99	22	20,2	cyclictest	3386252	-21	kworker/u8:0+flush-259:0	10:30:29	3
3188375	99	22	19,2	cyclictest	3297100	-21	kworker/u8:2+flush-259:0	09:55:23	3
3188375	99	22	19,2	cyclictest	3297100	-21	kworker/u8:2+events_unbound	09:52:30	3
3188375	99	22	19,2	cyclictest	3260736	-21	kworker/u8:1+events_unbound	08:40:21	3
3188370	99	22	17,4	cyclictest	335557	-21	systemd-journal	08:10:01	2
3188367	99	22	19,2	cyclictest	3286825	-21	kworker/u8:0+flush-259:0	08:55:24	1
3188367	99	22	19,2	cyclictest	3260736	-21	kworker/u8:1+events_unbound	09:25:19	1
3188367	99	22	18,3	cyclictest	3494823	-21	kworker/u8:0+events_unbound	12:10:17	1
3188365	99	22	19,2	cyclictest	3260736	-21	kworker/u8:1+flush-259:0	09:15:17	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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