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 Fri Aug 28, 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
3232742	99	59	53,4	cyclictest	3233035	-21	cat	19:10:00	1
3232742	99	56	50,4	cyclictest	3389499	-21	kworker/u8:3+events_unbound	21:45:01	1
3232742	99	52	46,4	cyclictest	3514692	-21	base64	23:40:01	1
3232737	99	43	39,3	cyclictest	3551903	-21	apt-get	00:15:11	0
3232749	99	42	37,3	cyclictest	3514597	-21	base64	23:40:00	3
3232737	99	41	37,3	cyclictest	3472665	-21	kworker/u8:3+flush-259:0	23:25:11	0
3232737	99	41	36,3	cyclictest	3269752	-21	gpgv	19:45:01	0
3232737	99	41	36,3	cyclictest	3269752	-21	gpgv	19:45:00	0
3232737	99	40	37,2	cyclictest	3362879	-21	kworker/u8:0+flush-259:0	21:55:25	0
3232737	99	40	33,5	cyclictest	3509332	-21	diskstats	23:35:14	0
3232747	99	39	32,4	cyclictest	3379078	-21	latency_hist	21:30:00	2
3232742	99	38	35,2	cyclictest	3520312	-21	kworker/u8:4+events_unbound	00:05:11	1
3232737	99	36	33,2	cyclictest	3347605	-21	kworker/u8:1+flush-259:0	21:00:16	0
3232737	99	36	33,2	cyclictest	3295573	-21	kworker/u8:2+flush-259:0	21:10:11	0
3232749	99	35	29,4	cyclictest	3327240	-21	apt-get	20:40:12	3
3232747	99	35	29,4	cyclictest	3368818	-21	cat	21:20:01	2
3232742	99	35	32,2	cyclictest	3232531	-21	kworker/u8:2+flush-259:0	19:20:20	1
3232742	99	35	0,34	cyclictest	1	-21	systemd	23:25:01	1
3232737	99	35	32,2	cyclictest	3452210	-21	kworker/u8:2+flush-259:0	00:25:25	0
3232742	99	34	29,3	cyclictest	3557395	-21	base64	00:20:01	1
3232742	99	34	29,3	cyclictest	3557395	-21	base64	00:20:00	1
3232742	99	34	29,3	cyclictest	3514254	-21	base64	23:40:00	1
3232749	99	33	25,5	cyclictest	3556979	-21	cp	00:20:00	3
3232742	99	33	27,4	cyclictest	3248766	-21	/usr/sbin/munin	19:25:13	1
3232737	99	32	28,3	cyclictest	3405191	-21	kworker/u8:3+flush-259:0	21:55:00	0
3232742	99	31	28,2	cyclictest	3472665	-21	kworker/u8:3+flush-259:0	23:15:26	1
3232742	99	31	28,2	cyclictest	3274897	-21	kworker/u8:0+flush-259:0	20:25:23	1
3232742	99	31	26,3	cyclictest	3368321	-21	https	21:20:00	1
3232737	99	31	28,2	cyclictest	3321813	-21	kworker/u8:4+flush-259:0	20:55:15	0
3232737	99	31	27,3	cyclictest	3243349	-21	kworker/u8:5+events_unbound	19:55:20	0
3232749	99	30	24,4	cyclictest	3546479	-21	latency_hist	00:10:00	3
3232747	99	30	25,3	cyclictest	3290639	-21	apt-get	20:05:11	2
3232742	99	30	26,3	cyclictest	3503729	-21	latency_hist	23:30:00	1
3232737	99	30	27,2	cyclictest	3415624	-21	kworker/u8:4+events_unbound	22:10:25	0
3232737	99	30	27,2	cyclictest	3410536	-21	kworker/u8:1+events_unbound	22:30:11	0
3232737	99	30	26,3	cyclictest	3452210	-21	kworker/u8:2+flush-259:0	22:50:25	0
3232737	99	30	26,3	cyclictest	3321813	-21	kworker/u8:4+flush-259:0	21:20:25	0
3232737	99	30	25,4	cyclictest	335557	-21	systemd-journal	23:20:01	0
3232747	99	29	24,3	cyclictest	3399804	-21	kworker/u8:2+flush-259:0	21:50:18	2
3232747	99	29	24,3	cyclictest	3321813	-21	kworker/u8:4+flush-259:0	21:00:15	2
3232742	99	29	23,4	cyclictest	3269497	-21	cat	19:45:01	1
3232742	99	29	23,4	cyclictest	3269497	-21	cat	19:45:00	1
3232742	99	28	23,2	cyclictest	3253723	-21	kworker/u8:4+flush-259:0	19:45:20	1
3232742	99	28	22,5	cyclictest	3400452	-21	apt-get	21:50:11	1
3232737	99	28	24,3	cyclictest	3513761	-21	kworker/u8:0+flush-259:0	23:40:22	0
3232737	99	28	24,3	cyclictest	335557	-21	systemd-journal	23:05:01	0
3232737	99	28	24,2	cyclictest	3536097	-21	kworker/u8:0+flush-259:0	00:00:15	0
3232737	99	28	23,3	cyclictest	3367405	-21	ntpq	21:15:23	0
3232742	99	27	24,2	cyclictest	3452210	-21	kworker/u8:2+flush-259:0	23:55:25	1
3232742	99	27	24,2	cyclictest	3295573	-21	kworker/u8:2+flush-259:0	20:20:16	1
3232749	99	26	19,5	cyclictest	335557	-21	systemd-journal	00:40:00	3
3232742	99	26	22,2	cyclictest	3472665	-21	kworker/u8:3+flush-259:0	23:15:01	1
3232737	99	26	22,3	cyclictest	3520312	-21	kworker/u8:4+flush-259:0	23:45:15	0
3232749	99	25	22,1	cyclictest	3290370	-21	latency_hist	20:05:00	3
3232749	99	25	19,4	cyclictest	3415962	-21	apt-get	22:05:14	3
3232742	99	25	21,3	cyclictest	3415624	-21	kworker/u8:4+flush-259:0	22:10:21	1
3232742	99	25	19,4	cyclictest	3320938	-21	ntpq	20:30:21	1
3232737	99	25	22,2	cyclictest	3452210	-21	kworker/u8:2+flush-259:0	23:00:00	0
3232737	99	25	22,2	cyclictest	3321813	-21	kworker/u8:4+events_unbound	20:40:15	0
3232737	99	25	21,3	cyclictest	3270015	-21	apt-get	19:45:12	0
3232749	99	24	17,5	cyclictest	3243566	-21	/usr/sbin/munin	19:20:14	3
3232747	99	24	4,12	cyclictest	3467485	-21	munin-run	22:55:00	2
3232747	99	24	18,4	cyclictest	335557	-21	systemd-journal	22:59:10	2
3232747	99	24	18,4	cyclictest	335557	-21	systemd-journal	00:32:10	2
3232747	99	24	15,6	cyclictest	3332152	-21	latency_hist	20:45:00	2
3232742	99	24	20,3	cyclictest	3452210	-21	kworker/u8:2+events_unbound	23:30:12	1
3232737	99	24	21,2	cyclictest	3520312	-21	kworker/u8:4+flush-259:0	00:33:12	0
3232737	99	24	20,3	cyclictest	3531148	-21	apt-get	23:55:13	0
3232747	99	23	11,6	cyclictest	3347593	-21	munin-run	21:00:00	2
3232742	99	23	20,2	cyclictest	3415624	-21	kworker/u8:4+events_unbound	22:15:17	1
3232742	99	23	20,2	cyclictest	177193	-21	kworker/u8:3+flush-259:0	19:35:01	1
3232742	99	23	19,3	cyclictest	3295573	-21	kworker/u8:2+events_unbound	21:30:24	1
3232737	99	23	20,2	cyclictest	3305539	-21	kworker/u8:3+events_unbound	20:25:12	0
3232749	99	22	16,4	cyclictest	3342885	-21	diskstats	20:55:14	3
3232742	99	22	19,2	cyclictest	3520312	-21	kworker/u8:4+flush-259:0	00:10:17	1
3232742	99	22	19,2	cyclictest	3410536	-21	kworker/u8:1+flush-259:0	22:30:15	1
3232742	99	22	19,2	cyclictest	3295573	-21	kworker/u8:2+flush-259:0	21:00:24	1
3232742	99	22	19,2	cyclictest	3243349	-21	kworker/u8:5+flush-259:0	19:50:17	1
3232742	99	22	19,1	cyclictest	0	-21	swapper/1	20:00:01	1
3232742	99	22	18,3	cyclictest	3232531	-21	kworker/u8:2+flush-259:0	19:17:06	1
3232737	99	22	19,2	cyclictest	3551317	-21	kworker/u8:1+events_unbound	00:39:11	0
3232737	99	22	19,2	cyclictest	3321813	-21	kworker/u8:4+events_unbound	21:05:19	0
3232737	99	22	19,2	cyclictest	3295573	-21	kworker/u8:2+events_unbound	20:45:24	0
3232737	99	22	18,3	cyclictest	3253969	-21	apt-get	19:30:11	0
3232749	99	21	15,4	cyclictest	3514076	-21	latency_hist	23:40:00	3
3232749	99	21	1,11	cyclictest	1	-21	systemd	22:54:11	3
3232747	99	21	17,3	cyclictest	3362879	-21	kworker/u8:0+flush-259:0	21:35:17	2
3232747	99	21	16,3	cyclictest	3520312	-21	kworker/u8:4+events_unbound	00:35:19	2
3232742	99	21	18,2	cyclictest	3551317	-21	kworker/u8:1+events_unbound	00:15:24	1
3232742	99	21	18,2	cyclictest	3452210	-21	kworker/u8:2+events_unbound	22:55:24	1
3232742	99	21	18,2	cyclictest	3285458	-21	kworker/u8:1+flush-259:0	20:15:20	1
3232742	99	21	17,3	cyclictest	3321813	-21	kworker/u8:4+events_unbound	21:20:12	1
3232742	99	21	17,3	cyclictest	3321813	-21	kworker/u8:4+events_unbound	20:58:09	1
3232742	99	21	0,19	cyclictest	1	-21	systemd	23:05:01	1
3232737	99	21	18,2	cyclictest	3362879	-21	kworker/u8:0+events_unbound	21:39:59	0
3232747	99	20	16,3	cyclictest	3321813	-21	kworker/u8:4+flush-259:0	20:50:16	2
3232747	99	20	14,4	cyclictest	3420894	-21	latency_hist	22:10:00	2
3232747	99	20	14,4	cyclictest	3332391	-21	/usr/sbin/munin	20:45:14	2
3232747	99	20	12,6	cyclictest	3556789	-21	latency_hist	00:20:00	2
3232747	99	20	1,10	cyclictest	3546491	-21	munin-run	00:10:00	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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