OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

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 Sat Sep 05, 2026 00:44:05)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3669480	99	46	41,3	cyclictest	3737612	-21	apt-get	20:15:10	1
3669477	99	43	38,3	cyclictest	3856607	-21	base64	22:10:00	0
3669480	99	40	35,4	cyclictest	3956234	-21	apt-get	23:45:11	1
3669488	99	39	34,4	cyclictest	3877639	-21	kworker/u8:1+events_unbound	22:40:17	3
3669477	99	39	34,3	cyclictest	3695526	-21	apt-get	19:35:11	0
3669484	99	38	34,3	cyclictest	3903830	-21	kworker/u8:5+flush-259:0	00:15:25	2
3669477	99	38	32,4	cyclictest	3742794	-21	apt-get	20:20:11	0
3669484	99	37	31,4	cyclictest	3747733	-21	latency_hist	20:25:01	2
3669480	99	37	31,4	cyclictest	335557	-21	systemd-journal	21:19:59	1
3669488	99	36	31,3	cyclictest	3742569	-21	kworker/u8:1+flush-259:0	21:05:10	3
3669477	99	35	31,3	cyclictest	3835499	-21	kworker/u8:3+flush-259:0	22:15:21	0
3669488	99	34	28,4	cyclictest	3909264	-21	/usr/sbin/munin	23:00:13	3
3669488	99	33	29,3	cyclictest	3903830	-21	kworker/u8:5+flush-259:0	00:05:23	3
3669488	99	33	28,3	cyclictest	3690106	-21	kworker/u8:4+flush-259:0	20:10:26	3
3669488	99	33	27,4	cyclictest	3940077	-21	latency_hist	23:30:00	3
3669484	99	32	28,3	cyclictest	3919665	-21	apt-get	23:10:11	2
3669484	99	32	26,4	cyclictest	335557	-21	systemd-journal	22:50:32	2
3669488	99	31	27,3	cyclictest	3966565	-21	apt-get	23:55:11	3
3669488	99	31	24,4	cyclictest	3825100	-21	latency_hist	21:40:00	3
3669480	99	31	26,4	cyclictest	3924805	-21	apt-get	23:15:11	1
3669477	99	31	27,3	cyclictest	3887920	-21	kworker/u8:0+flush-259:0	22:50:16	0
3669477	99	31	26,4	cyclictest	3732187	-21	latency_hist	20:10:00	0
3669488	99	29	24,3	cyclictest	3987074	-21	kworker/u8:1+flush-259:0	00:20:22	3
3669477	99	29	26,2	cyclictest	3877639	-21	kworker/u8:1+events_unbound	22:45:00	0
3669488	99	28	22,4	cyclictest	3669628	-21	kworker/u8:2+events_unbound	19:20:14	3
3669484	99	28	25,2	cyclictest	3669628	-21	kworker/u8:2+flush-259:0	20:00:22	2
3669480	99	28	24,3	cyclictest	3680040	-21	apt-get	19:20:11	1
3669480	99	28	24,3	cyclictest	335557	-21	systemd-journal	23:02:05	1
3669480	99	28	23,3	cyclictest	335557	-21	systemd-journal	22:28:31	1
3669480	99	28	21,5	cyclictest	3689155	-21	ntpq	19:25:20	1
3669488	99	27	23,3	cyclictest	1623209	-21	kworker/u8:3+flush-259:0	19:10:15	3
3669484	99	27	24,2	cyclictest	3819959	-21	kworker/u8:0+flush-259:0	22:10:01	2
3669484	99	27	23,3	cyclictest	3742569	-21	kworker/u8:1+flush-259:0	21:05:32	2
3669477	99	27	25,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	21:19:59	0
3669488	99	26	23,2	cyclictest	3809490	-21	kworker/u8:3+events_unbound	21:25:25	3
3669480	99	26	23,2	cyclictest	3742569	-21	kworker/u8:1+events_unbound	20:30:14	1
3669477	99	26	20,4	cyclictest	3940922	-21	diskstats	23:30:11	0
3669477	99	26	20,4	cyclictest	3762259	-21	ntpq	20:35:20	0
3669488	99	25	21,3	cyclictest	3987074	-21	kworker/u8:1+flush-259:0	00:30:13	3
3669488	99	25	21,3	cyclictest	3903830	-21	kworker/u8:5+flush-259:0	23:45:13	3
3669488	99	25	18,5	cyclictest	3992234	-21	latency_hist	00:20:01	3
3669480	99	25	21,3	cyclictest	3725764	-21	ntpq	20:00:20	1
3669484	99	24	18,4	cyclictest	3970573	-21	ntpq	23:55:20	2
3669480	99	24	20,3	cyclictest	509	-21	rs:main		1
3669477	99	24	20,3	cyclictest	3669628	-21	kworker/u8:2+flush-259:0	19:55:25	0
3669488	99	23	18,4	cyclictest	3742569	-21	kworker/u8:1+flush-259:0	21:45:15	3
3669484	99	23	19,3	cyclictest	3893046	-21	latency_hist	22:45:00	2
3669484	99	23	18,4	cyclictest	3758319	-21	apt-get	20:35:11	2
3669480	99	23	20,2	cyclictest	3778719	-21	kworker/u8:0+flush-259:0	21:20:16	1
3669480	99	23	19,3	cyclictest	1623209	-21	kworker/u8:3+flush-259:0	19:45:17	1
3669480	99	23	18,3	cyclictest	3794136	-21	latency_hist	21:10:01	1
3669477	99	23	20,2	cyclictest	3742569	-21	kworker/u8:1+flush-259:0	20:50:22	0
3669488	99	22	18,3	cyclictest	3903830	-21	kworker/u8:5+flush-259:0	23:10:23	3
3669488	99	22	17,4	cyclictest	3819959	-21	kworker/u8:0+events_unbound	22:10:12	3
3669488	99	22	16,4	cyclictest	3903830	-21	kworker/u8:5+flush-259:0	23:50:14	3
3669484	99	22	18,3	cyclictest	3971493	-21	kworker/u8:0+flush-259:0	00:25:26	2
3669484	99	22	18,3	cyclictest	3971493	-21	kworker/u8:0+flush-259:0	00:25:25	2
3669480	99	22	19,2	cyclictest	3987074	-21	kworker/u8:1+flush-259:0	00:35:00	1
3669480	99	22	17,4	cyclictest	335557	-21	systemd-journal	22:01:31	1
3669477	99	22	20,1	cyclictest	3819918	-21	sh	21:35:00	0
3669488	99	21	17,3	cyclictest	3987074	-21	kworker/u8:1+flush-259:0	00:25:28	3
3669488	99	21	17,3	cyclictest	3987074	-21	kworker/u8:1+flush-259:0	00:25:28	3
3669488	99	21	17,3	cyclictest	3903830	-21	kworker/u8:5+events_unbound	00:00:17	3
3669484	99	21	18,2	cyclictest	3778719	-21	kworker/u8:0+flush-259:0	21:00:23	2
3669484	99	21	18,2	cyclictest	3669628	-21	kworker/u8:2+flush-259:0	19:10:23	2
3669484	99	21	17,3	cyclictest	3727347	-21	apt-get	20:05:11	2
3669480	99	21	16,3	cyclictest	3945906	-21	apt-get	23:35:10	1
3669477	99	21	19,1	cyclictest	3850936	-21	kworker/u8:2+flush-259:0	22:25:10	0
3669477	99	21	18,2	cyclictest	3903830	-21	kworker/u8:5+flush-259:0	23:40:00	0
3669477	99	21	15,4	cyclictest	3737351	-21	latency_hist	20:15:01	0
3669477	99	21	14,5	cyclictest	4008171	-21	diskstats	00:35:12	0
3669488	99	20	17,2	cyclictest	3835499	-21	kworker/u8:3+events_unbound	22:30:23	3
3669488	99	20	17,2	cyclictest	3778719	-21	kworker/u8:0+flush-259:0	21:10:22	3
3669488	99	20	17,2	cyclictest	3742569	-21	kworker/u8:1+events_unbound	21:30:15	3
3669488	99	20	16,3	cyclictest	3903830	-21	kworker/u8:5+flush-259:0	23:15:15	3
3669488	99	20	16,3	cyclictest	3850936	-21	kworker/u8:2+events_unbound	22:25:14	3
3669488	99	20	16,3	cyclictest	3778719	-21	kworker/u8:0+events_unbound	21:23:33	3
3669484	99	20	17,2	cyclictest	3945524	-21	kworker/u8:2+events_unbound	23:50:21	2
3669480	99	20	0,19	cyclictest	3732210	-21	true	20:10:00	1
3669477	99	20	16,3	cyclictest	3914419	-21	/usr/sbin/munin	23:05:13	0
3669488	99	19	16,2	cyclictest	3877639	-21	kworker/u8:1+flush-259:0	22:47:04	3
3669488	99	19	16,2	cyclictest	3819959	-21	kworker/u8:0+events_unbound	21:50:22	3
3669488	99	19	15,3	cyclictest	3903830	-21	kworker/u8:5+flush-259:0	23:35:22	3
3669488	99	19	15,3	cyclictest	3903830	-21	kworker/u8:5+flush-259:0	23:05:27	3
3669488	99	19	15,3	cyclictest	3903830	-21	kworker/u8:5+events_unbound	23:40:14	3
3669488	99	19	15,3	cyclictest	3669628	-21	kworker/u8:2+flush-259:0	20:40:19	3
3669484	99	19	16,2	cyclictest	3835499	-21	kworker/u8:3+flush-259:0	22:15:22	2
3669480	99	19	16,2	cyclictest	3669628	-21	kworker/u8:2+flush-259:0	19:40:00	1
3669477	99	19	15,3	cyclictest	3945524	-21	kworker/u8:2+flush-259:0	23:55:26	0
3669488	99	18	15,2	cyclictest	3773963	-21	diskstats	20:50:13	3
3669488	99	18	15,2	cyclictest	3721529	-21	kworker/u8:0+events_unbound	20:05:18	3
3669488	99	18	15,2	cyclictest	3669628	-21	kworker/u8:2+events_unbound	19:15:17	3
3669488	99	18	15,2	cyclictest	1623209	-21	kworker/u8:3+events_unbound	19:40:14	3
3669488	99	18	14,3	cyclictest	3903830	-21	kworker/u8:5+events_unbound	23:30:20	3
3669488	99	18	14,3	cyclictest	3887920	-21	kworker/u8:0+events_unbound	23:20:12	3
3669488	99	18	12,4	cyclictest	3742569	-21	kworker/u8:1+flush-259:0	22:00:24	3
3669484	99	18	15,2	cyclictest	3903830	-21	kworker/u8:5+flush-259:0	23:45:16	2
3669484	99	18	14,3	cyclictest	3904069	-21	apt-get	22:55:10	2
3669477	99	18	15,2	cyclictest	3929706	-21	cron	23:20:01	0
3669477	99	18	15,2	cyclictest	3903830	-21	kworker/u8:5+flush-259:0	23:25:00	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


Access: public		Short link to this page
This page was last modified on 2021-09-01 - 00:34