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 #5, 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, lowest P state: ondemand
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack5slot4s.osadl.org (updated Thu Jul 16, 2026 12:44:14)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3613260	2	70	0,5	chrt	0	-21	swapper/2	12:32:30	2
3559705	2	70	0,2	sleep1	16	1	rcu_preempt	11:37:33	1
3297790	2	66	0,3	sleep3	584	-21	kworker/3:2-events	07:15:03	3
3297790	2	66	0,3	sleep3	584	-21	kworker/3:2-events	07:15:03	3
3292320	99	60	54,4	cyclictest	3423883	-21	kworker/u8:3+events_unbound	09:22:42	1
3292320	99	60	52,6	cyclictest	3563010	-21	kworker/u8:0+flush-8:0	11:50:00	1
3292320	99	60	50,7	cyclictest	3527736	-21	latency_hist	11:05:00	1
3292320	99	57	51,4	cyclictest	3537238	-21	kworker/u8:2+flush-8:0	12:32:41	1
3292320	99	57	46,8	cyclictest	3542771	-21	apt-get	11:20:00	1
3292316	99	56	47,7	cyclictest	281	-21	systemd-journal	12:35:00	0
3292320	99	54	47,4	cyclictest	3260549	-21	kworker/u8:1+flush-8:0	09:47:46	1
3292320	99	53	46,5	cyclictest	3260549	-21	kworker/u8:1+flush-8:0	09:17:27	1
3292320	99	53	45,6	cyclictest	3251715	-21	kworker/u8:0+flush-8:0	07:22:26	1
3292320	99	52	39,9	cyclictest	281	-21	systemd-journal	11:45:00	1
3292320	99	51	44,5	cyclictest	3260549	-21	kworker/u8:1+events_unbound	09:07:27	1
3466571	2	50	0,2	sleep3	584	-21	kworker/3:2+events	10:02:33	3
3309593	2	50	0,1	sleep0	3309595	-21	aten2_r5power_e	07:27:27	0
3292320	99	50	44,4	cyclictest	3587677	-21	kworker/u8:3+flush-8:0	12:22:31	1
3292320	99	50	43,5	cyclictest	3502828	-21	kworker/u8:2+flush-8:0	10:47:28	1
3292320	99	50	42,6	cyclictest	3260549	-21	kworker/u8:1+events_unbound	08:02:39	1
3292320	99	50	38,3	cyclictest	3611499	-21	kworker/u8:0+flush-8:0	12:37:36	1
3292320	99	49	43,5	cyclictest	3537238	-21	kworker/u8:2+flush-8:0	11:22:28	1
3292320	99	49	43,4	cyclictest	3260549	-21	kworker/u8:1+flush-8:0	09:12:28	1
3292316	99	49	44,4	cyclictest	3318890	-21	kworker/u8:0+flush-8:0	07:35:01	0
3292320	99	48	43,4	cyclictest	3338874	-21	kworker/u8:0+flush-8:0	08:42:44	1
3292320	99	48	42,4	cyclictest	1951005	-21	kworker/u8:2+events_unbound	07:55:00	1
3292320	99	48	41,5	cyclictest	3537238	-21	kworker/u8:2+flush-8:0	11:32:38	1
3292316	99	48	39,6	cyclictest	3323962	-21	latency_hist	07:40:01	0
3292316	99	48	0,46	cyclictest	3582531	-21	true	12:00:00	0
3292320	99	47	41,5	cyclictest	3349226	-21	kworker/u8:3+flush-8:0	08:12:41	1
3292320	99	47	40,5	cyclictest	3438285	-21	kworker/u8:2+events_unbound	10:07:29	1
3292320	99	47	39,6	cyclictest	3423883	-21	kworker/u8:3+events_unbound	09:27:40	1
3292320	99	47	39,6	cyclictest	3328940	-21	latency_hist	07:45:01	1
3292320	99	46	40,4	cyclictest	3473136	-21	kworker/u8:0+flush-8:0	10:52:29	1
3292320	99	46	39,5	cyclictest	3349226	-21	kworker/u8:3+flush-8:0	08:22:34	1
3292320	99	46	38,6	cyclictest	3493082	-21	latency_hist	10:30:01	1
3292316	99	46	40,4	cyclictest	3338874	-21	kworker/u8:0+flush-8:0	08:47:29	0
3292316	99	46	37,6	cyclictest	281	-21	systemd-journal	12:30:00	0
3292320	99	45	39,4	cyclictest	3518105	-21	kworker/u8:1+flush-8:0	11:07:37	1
3292320	99	45	39,4	cyclictest	3473136	-21	kworker/u8:0+events_unbound	10:42:40	1
3292320	99	45	39,4	cyclictest	3260549	-21	kworker/u8:1+flush-8:0	08:52:32	1
3292320	99	44	39,3	cyclictest	3260549	-21	kworker/u8:1+events_unbound	08:07:27	1
3292320	99	44	38,5	cyclictest	3308363	-21	kworker/u8:3+flush-8:0	07:32:39	1
3292320	99	44	38,4	cyclictest	3587677	-21	kworker/u8:3+flush-8:0	12:12:44	1
3292320	99	44	38,4	cyclictest	3587677	-21	kworker/u8:3+flush-8:0	12:12:44	1
3292316	99	44	38,5	cyclictest	3260549	-21	kworker/u8:1+flush-8:0	09:52:45	0
3292316	99	44	34,7	cyclictest	3309103	-21	latency_hist	07:25:01	0
3292320	99	43	38,4	cyclictest	3587677	-21	kworker/u8:3+events_unbound	12:10:00	1
3292320	99	43	38,3	cyclictest	3438285	-21	kworker/u8:2+events_unbound	10:02:27	1
3292320	99	43	38,3	cyclictest	3318890	-21	kworker/u8:0+flush-8:0	07:37:30	1
3292320	99	43	38,3	cyclictest	3260549	-21	kworker/u8:1+events_unbound	10:17:43	1
3292320	99	43	37,4	cyclictest	3260549	-21	kworker/u8:1+flush-8:0	09:02:39	1
3292320	99	43	37,4	cyclictest	3260549	-21	kworker/u8:1+events_unbound	08:00:00	1
3292320	99	43	31,9	cyclictest	281	-21	systemd-journal	11:12:39	1
3292316	99	43	36,5	cyclictest	281	-21	systemd-journal	07:42:22	0
3292316	99	43	33,8	cyclictest	3528407	-21	diskstats	11:07:27	0
3292320	99	42	36,5	cyclictest	3338874	-21	kworker/u8:0+flush-8:0	08:27:39	1
3292320	99	42	36,5	cyclictest	1951005	-21	kworker/u8:2+flush-8:0	07:47:43	1
3292320	99	42	35,5	cyclictest	3260549	-21	kworker/u8:1+events_unbound	08:17:38	1
3292320	99	42	35,5	cyclictest	3260549	-21	kworker/u8:1+events_unbound	08:17:38	1
3292316	99	42	35,5	cyclictest	281	-21	systemd-journal	11:33:19	0
3292316	99	42	1,39	cyclictest	3413511	-21	munin-run	09:10:01	0
3292320	99	41	38,2	cyclictest	3563010	-21	kworker/u8:0+events_unbound	11:52:40	1
3292320	99	41	36,3	cyclictest	3438285	-21	kworker/u8:2+events_unbound	10:00:01	1
3292320	99	41	35,4	cyclictest	3587677	-21	kworker/u8:3+events_unbound	12:17:29	1
3292320	99	41	34,5	cyclictest	3438285	-21	kworker/u8:2+events_unbound	09:52:38	1
3292320	99	41	33,5	cyclictest	3338874	-21	kworker/u8:0+events_unbound	08:37:42	1
3292320	99	40	34,4	cyclictest	3518105	-21	kworker/u8:1+events_unbound	11:30:01	1
3292320	99	40	33,5	cyclictest	3563010	-21	kworker/u8:0+events_unbound	11:57:30	1
3292327	99	39	8,15	cyclictest	0	-21	swapper/2	10:52:24	2
3292316	99	39	29,8	cyclictest	3588128	-21	diskstats	12:07:29	0
3292316	99	39	28,9	cyclictest	281	-21	systemd-journal	10:35:00	0
3292320	99	38	33,3	cyclictest	3260549	-21	kworker/u8:1+events_unbound	08:57:35	1
3292320	99	38	32,5	cyclictest	3260549	-21	kworker/u8:1+events_unbound	10:32:27	1
3292320	99	38	32,4	cyclictest	3587677	-21	kworker/u8:3+events_unbound	12:27:29	1
3292320	99	38	32,4	cyclictest	3260549	-21	kworker/u8:1+flush-8:0	08:32:36	1
3292320	99	38	32,4	cyclictest	1951005	-21	kworker/u8:2+events_unbound	07:12:29	1
3292320	99	38	31,5	cyclictest	3260549	-21	kworker/u8:1+flush-8:0	09:42:32	1
3292327	99	36	21,13	cyclictest	0	-21	swapper/2	08:30:00	2
3292327	99	36	18,16	cyclictest	3343770	-21	cron	08:00:00	2
3292320	99	36	30,4	cyclictest	3518105	-21	kworker/u8:1+events_unbound	11:00:01	1
3292320	99	36	30,4	cyclictest	3260549	-21	kworker/u8:1+flush-8:0	08:47:40	1
3292316	99	36	30,4	cyclictest	3368847	-21	cut	08:25:00	0
3292316	99	36	27,7	cyclictest	3349398	-21	/usr/sbin/munin	08:07:36	0
3292320	99	35	29,4	cyclictest	3518105	-21	kworker/u8:1+flush-8:0	12:02:27	1
3292320	99	35	25,7	cyclictest	281	-21	systemd-journal	09:37:55	1
3292316	99	35	31,3	cyclictest	3438285	-21	kworker/u8:2+flush-8:0	10:02:28	0
3292316	99	35	30,4	cyclictest	3537238	-21	kworker/u8:2+flush-8:0	11:37:45	0
3292316	99	35	30,4	cyclictest	3260549	-21	kworker/u8:1+events_unbound	08:17:42	0
3292316	99	35	30,4	cyclictest	3260549	-21	kworker/u8:1+events_unbound	08:17:42	0
3292327	99	34	25,6	cyclictest	281	-21	systemd-journal	12:05:00	2
3292320	99	34	27,5	cyclictest	1951005	-21	kworker/u8:2+flush-8:0	07:17:40	1
3292320	99	34	27,5	cyclictest	1951005	-21	kworker/u8:2+flush-8:0	07:17:40	1
3292316	99	34	30,3	cyclictest	3260549	-21	kworker/u8:1+events_unbound	08:05:00	0
3292316	99	34	29,4	cyclictest	3260549	-21	kworker/u8:1+flush-8:0	07:57:38	0
3292316	99	34	24,7	cyclictest	3398634	-21	latency_hist	08:55:01	0
3292320	99	33	27,5	cyclictest	3260549	-21	kworker/u8:1+flush-8:0	10:12:36	1
3292320	99	33	27,5	cyclictest	3260549	-21	kworker/u8:1+flush-8:0	10:12:36	1
3292316	99	33	29,3	cyclictest	3518105	-21	kworker/u8:1+flush-8:0	12:04:00	0
3292316	99	33	27,4	cyclictest	3458827	-21	apt-get	09:57:22	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


Access: public		Short link to this page
This page was last modified on 2019-05-28 - 00:17