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 #7, 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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack7slot4s.osadl.org (updated Sun May 24, 2026 12:45:11)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
31469	99	70	34,22	cyclictest	359	66	irq/58-eth0	12:35:11	3
31438	99	59	16,6	cyclictest	12	-21	ksoftirqd/0	12:25:14	0
31449	99	55	3,40	cyclictest	5604	-21	ssh	10:15:12	1
31438	99	53	5,38	cyclictest	30542	-21	ssh	09:35:13	0
31438	99	51	1,31	cyclictest	7813	-21	ssh	11:10:14	0
31469	99	46	21,15	cyclictest	359	66	irq/58-eth0	09:40:12	3
31460	99	46	3,31	cyclictest	21509	-21	ssh	09:30:13	2
31449	99	44	4,3	cyclictest	13	1	rcu_preempt	12:30:14	1
31460	99	43	5,26	cyclictest	1889	-21	ssh	09:55:14	2
31449	99	43	15,4	cyclictest	13	1	rcu_preempt	09:50:12	1
31449	99	43	13,3	cyclictest	13	1	rcu_preempt	07:45:11	1
31460	99	41	15,10	cyclictest	22976	-21	irqstats	11:00:21	2
31438	99	40	4,22	cyclictest	13	1	rcu_preempt	08:50:13	0
31460	99	38	2,18	cyclictest	11378	-21	needreboot	11:10:23	2
31438	99	38	26,6	cyclictest	12	-21	ksoftirqd/0	10:25:13	0
31460	99	37	0,23	cyclictest	11736	-21	head	09:00:31	2
31449	99	37	3,26	cyclictest	24263	-21	ssh	11:55:12	1
31449	99	37	1,30	cyclictest	0	-21	swapper/1	07:15:13	1
31438	99	37	17,11	cyclictest	13	1	rcu_preempt	11:35:13	0
31469	99	36	3,19	cyclictest	359	66	irq/58-eth0	10:40:13	3
31469	99	36	23,10	cyclictest	359	66	irq/58-eth0	12:15:11	3
31469	99	36	2,22	cyclictest	359	66	irq/58-eth0	07:15:11	3
31460	99	36	2,17	cyclictest	27822	-21	ssh	10:45:18	2
31460	99	36	2,17	cyclictest	27762	-21	ssh	11:38:17	2
31449	99	36	1,28	cyclictest	9457	-21	ssh	10:35:13	1
31469	99	35	18,11	cyclictest	0	-21	swapper/3	12:05:13	3
31469	99	35	18,11	cyclictest	0	-21	swapper/3	12:05:12	3
31460	99	35	18,13	cyclictest	14656	-21	apt-get	10:20:14	2
31460	99	35	10,17	cyclictest	31218	-21	ssh	11:05:13	2
31449	99	35	3,26	cyclictest	28968	-21	ssh	10:10:11	1
31438	99	35	3,10	cyclictest	13	1	rcu_preempt	11:40:11	0
31438	99	35	1,26	cyclictest	22271	-21	ssh	11:00:16	0
31438	99	35	1,25	cyclictest	18832	-21	ssh	12:10:11	0
31460	99	34	2,16	cyclictest	24827	-21	ssh	10:42:17	2
31460	99	34	1,16	cyclictest	16266	-21	ssh	09:45:13	2
31438	99	34	2,24	cyclictest	27851	-21	ssh	12:15:14	0
31469	99	33	5,13	cyclictest	359	66	irq/58-eth0	09:55:14	3
31469	99	33	3,18	cyclictest	359	66	irq/58-eth0	12:25:13	3
31460	99	33	18,9	cyclictest	30530	-21	apt-get	09:35:13	2
31449	99	33	0,24	cyclictest	0	-21	swapper/1	11:15:13	1
31460	99	32	1,17	cyclictest	0	-21	swapper/2	09:40:13	2
31449	99	32	4,24	cyclictest	20582	-21	ssh	11:35:12	1
31438	99	32	1,3	cyclictest	13	1	rcu_preempt	12:05:13	0
31438	99	32	1,3	cyclictest	13	1	rcu_preempt	12:05:13	0
31460	99	31	6,15	cyclictest	273	46	irq/40-dwc2_hso	09:05:12	2
31460	99	31	6,13	cyclictest	0	-21	swapper/2	11:16:26	2
31460	99	31	4,16	cyclictest	273	46	irq/40-dwc2_hso	07:35:13	2
31460	99	30	8,5	cyclictest	27	-21	ksoftirqd/2	09:20:27	2
31460	99	30	4,15	cyclictest	273	46	irq/40-dwc2_hso	08:40:12	2
31460	99	30	3,6	cyclictest	27	-21	ksoftirqd/2	11:42:29	2
31460	99	30	3,21	cyclictest	273	46	irq/40-dwc2_hso	10:30:13	2
31460	99	30	3,19	cyclictest	0	-21	swapper/2	09:15:13	2
31460	99	30	2,21	cyclictest	11021	-21	cat	11:45:31	2
31460	99	29	4,17	cyclictest	0	-21	swapper/2	09:25:13	2
31460	99	29	4,17	cyclictest	0	-21	swapper/2	09:25:12	2
31460	99	29	3,9	cyclictest	0	-21	swapper/2	12:00:17	2
31460	99	29	3,19	cyclictest	0	-21	swapper/2	12:05:13	2
31460	99	29	3,19	cyclictest	0	-21	swapper/2	12:05:12	2
31460	99	29	3,11	cyclictest	0	-21	swapper/2	11:53:17	2
31460	99	29	2,4	cyclictest	27	-21	ksoftirqd/2	10:25:02	2
31460	99	29	2,20	cyclictest	0	-21	swapper/2	11:20:14	2
31460	99	29	2,20	cyclictest	0	-21	swapper/2	10:55:13	2
31460	99	29	17,9	cyclictest	22495	-21	apt-get	12:30:14	2
31460	99	29	17,3	cyclictest	5591	-21	apt-get	10:15:11	2
31449	99	29	4,6	cyclictest	13	1	rcu_preempt	12:25:14	1
31449	99	29	4,3	cyclictest	13	1	rcu_preempt	10:25:13	1
31449	99	29	2,21	cyclictest	2009	-21	usage_EthcTask	11:40:30	1
31438	99	29	2,19	cyclictest	16859	-21	ssh	11:15:13	0
31469	99	28	4,9	cyclictest	359	66	irq/58-eth0	10:35:12	3
31469	99	28	2,16	cyclictest	359	66	irq/58-eth0	10:45:13	3
31469	99	28	16,8	cyclictest	0	-21	swapper/3	11:35:13	3
31460	99	28	7,8	cyclictest	27	-21	ksoftirqd/2	11:30:01	2
31460	99	28	4,6	cyclictest	27	-21	ksoftirqd/2	10:05:25	2
31460	99	28	3,17	cyclictest	273	46	irq/40-dwc2_hso	07:55:14	2
31460	99	28	2,19	cyclictest	0	-21	swapper/2	09:50:14	2
31449	99	28	2,20	cyclictest	8042	-21	ssh	12:03:17	1
31438	99	28	2,3	cyclictest	13	1	rcu_preempt	07:20:12	0
31469	99	27	3,15	cyclictest	0	-21	swapper/3	12:00:18	3
31469	99	27	2,16	cyclictest	359	66	irq/58-eth0	09:50:13	3
31469	99	27	15,5	cyclictest	0	-21	swapper/3	11:55:14	3
31460	99	27	7,3	cyclictest	0	-21	swapper/2	07:47:11	2
31460	99	27	3,17	cyclictest	273	46	irq/40-dwc2_hso	08:00:13	2
31460	99	27	3,14	cyclictest	273	46	irq/40-dwc2_hso	07:50:13	2
31460	99	27	3,13	cyclictest	27	-21	ksoftirqd/2	12:35:27	2
31460	99	27	3,11	cyclictest	27	-21	ksoftirqd/2	12:26:45	2
31460	99	27	2,20	cyclictest	0	-21	swapper/2	10:51:17	2
31460	99	27	2,18	cyclictest	4721	-21	ssh	12:20:16	2
31460	99	27	18,8	cyclictest	26	1	rcuc/2	12:19:18	2
31460	99	27	15,8	cyclictest	9423	-21	apt-get	10:35:14	2
31460	99	27	10,10	cyclictest	27	-21	ksoftirqd/2	11:58:22	2
31449	99	27	6,14	cyclictest	13	1	rcu_preempt	08:20:12	1
31449	99	27	2,20	cyclictest	15654	-21	grep	11:30:28	1
31449	99	27	2,19	cyclictest	32296	-21	ssh	11:22:17	1
31449	99	27	2,18	cyclictest	3437	-21	ssh	09:20:12	1
31449	99	27	2,18	cyclictest	24534	-21	apt-get	08:10:12	1
31438	99	27	8,3	cyclictest	12	-21	ksoftirqd/0	11:45:13	0
31438	99	27	10,9	cyclictest	12	-21	ksoftirqd/0	10:20:13	0
31460	99	26	3,8	cyclictest	27	-21	ksoftirqd/2	12:13:36	2
31460	99	26	3,5	cyclictest	27	-21	ksoftirqd/2	10:10:22	2
31460	99	26	3,14	cyclictest	273	46	irq/40-dwc2_hso	08:30:12	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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