OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, slot #7

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: performance
Compare latency of primary with shadow system

Characteristics of the 792 highest latencies:

System rack2slot7s.osadl.org (updated Thu Jan 01, 2026 07:55:37)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
580637	99	77	46,14	cyclictest	892423	-21	fstime	05:56:56	0
580637	99	59	45,11	cyclictest	889349	-21	execl	05:49:59	0
580640	99	56	48,5	cyclictest	847938	-21	multi.sh	05:41:53	2
580640	99	52	42,7	cyclictest	1306581	-21	Run	06:05:20	2
580640	99	52	42,7	cyclictest	1306581	-21	Run	06:05:20	2
580638	99	51	43,5	cyclictest	1389911	-21	multi.sh	06:10:00	1
580638	99	51	43,5	cyclictest	1389911	-21	multi.sh	06:10:00	1
580640	99	50	41,6	cyclictest	1412985	-21	sh	06:10:56	2
580638	99	50	42,5	cyclictest	889348	-21	execl	05:49:57	1
580638	99	50	41,6	cyclictest	1405331	-21	sh	06:10:36	1
580638	99	50	40,7	cyclictest	1165	-21	mta-sts-daemon	05:09:53	1
580637	99	50	41,6	cyclictest	1387826	-21	tee	06:09:54	0
580637	99	50	41,6	cyclictest	1387826	-21	tee	06:09:54	0
580640	99	49	38,5	cyclictest	0	-21	swapper/2	05:49:58	2
580638	99	48	39,6	cyclictest	882860	-21	sh	05:43:19	1
580640	99	47	37,4	cyclictest	0	-21	swapper/2	05:39:47	2
580638	99	47	38,6	cyclictest	807444	-21	sed	05:40:01	1
580638	99	47	37,6	cyclictest	890927	-21	fstime	05:55:01	1
580637	99	47	35,9	cyclictest	1426643	-21	multi.sh	06:11:27	0
580640	99	45	37,5	cyclictest	890925	-21	fstime	05:55:01	2
580637	99	45	39,4	cyclictest	839304	-21	sh	05:41:32	0
580638	99	43	34,6	cyclictest	975014	-21	spawn	06:03:06	1
580640	99	42	26,6	cyclictest	948915	-21	spawn	06:03:00	2
580640	99	41	26,10	cyclictest	715020	-21	spawn	05:34:54	2
580638	99	41	33,5	cyclictest	746097	-21	spawn	05:34:47	1
580640	99	40	31,6	cyclictest	892445	-21	fstime	05:58:23	2
580640	99	40	31,5	cyclictest	1472832	-21	cron	06:40:00	2
580637	99	39	33,4	cyclictest	807084	-21	sh	05:40:00	0
580638	99	38	30,5	cyclictest	580947	-21	unixbench_singl	05:05:02	1
580638	99	38	30,5	cyclictest	1472837	-21	sendmail	06:40:00	1
580638	99	38	27,8	cyclictest	0	-21	swapper/1	06:25:00	1
580637	99	38	31,5	cyclictest	1305351	-21	Run	06:04:41	0
580640	99	37	31,3	cyclictest	0	-21	swapper/2	06:25:00	2
580640	99	37	28,6	cyclictest	564	-21	dbus-daemon	05:30:01	2
580637	99	37	28,5	cyclictest	0	-21	swapper/0	05:14:49	0
580640	99	36	27,5	cyclictest	674	-21	gdbus	05:10:00	2
580640	99	36	25,7	cyclictest	461204	-21	cups-browsed	05:20:18	2
580638	99	36	27,6	cyclictest	892983	-21	Run	05:59:45	1
580640	99	35	27,4	cyclictest	583819	-21	3dinfo	05:15:01	2
580637	99	35	29,4	cyclictest	580651	-21	timerandwakeup	05:05:00	0
580640	99	34	25,6	cyclictest	580794	-21	/usr/sbin/munin	05:05:01	2
580638	99	34	28,3	cyclictest	0	-21	swapper/1	05:30:01	1
580638	99	33	23,8	cyclictest	585572	-21	unixbench_singl	05:20:02	1
580637	99	33	23,7	cyclictest	715020	-21	spawn	05:34:51	0
580638	99	32	26,3	cyclictest	0	-21	swapper/1	06:20:00	1
580638	99	32	26,3	cyclictest	0	-21	swapper/1	06:20:00	1
580637	99	32	24,4	cyclictest	0	-21	swapper/0	05:10:01	0
580637	99	32	19,7	cyclictest	1166	-21	mta-sts-daemon	05:50:15	0
580640	99	31	25,3	cyclictest	0	-21	swapper/2	06:20:00	2
580640	99	31	25,3	cyclictest	0	-21	swapper/2	06:20:00	2
580637	99	31	24,4	cyclictest	15	1	ktimers/0	06:34:48	0
580637	99	29	24,3	cyclictest	588455	-21	grep	05:30:00	0
580640	99	28	20,5	cyclictest	1470446	-21	fschecks_count	06:34:43	2
580638	99	28	22,3	cyclictest	0	-21	swapper/1	05:15:00	1
580638	99	28	18,8	cyclictest	1469936	-21	sh	06:30:01	1
580637	99	28	22,4	cyclictest	584765	-21	wc	05:19:47	0
580637	99	28	21,5	cyclictest	0	-21	swapper/0	06:25:00	0
580637	99	28	20,6	cyclictest	461204	-21	cups-browsed	06:29:49	0
580637	99	28	15,10	cyclictest	0	-21	swapper/0	06:40:00	0
580637	99	27	21,4	cyclictest	586107	-21	fschecks_time	05:24:43	0
580637	99	27	21,4	cyclictest	1466626	-21	munin-run	06:20:00	0
580637	99	27	21,4	cyclictest	1466626	-21	munin-run	06:20:00	0
580640	99	26	5,13	cyclictest	792	-21	munin-node	05:19:50	2
580638	99	26	18,5	cyclictest	1470472	-21	gltestperf	06:34:43	1
580640	99	25	1,17	cyclictest	35	1	ktimers/2	06:29:52	2
580638	99	24	14,7	cyclictest	586236	-21	kernelversion	05:24:45	1
580644	99	20	5,7	cyclictest	0	-21	swapper/3	05:39:51	3
580644	99	19	3,8	cyclictest	0	-21	swapper/3	05:34:55	3
580644	99	17	3,10	cyclictest	0	-21	swapper/3	06:09:59	3
580644	99	17	3,10	cyclictest	0	-21	swapper/3	06:09:59	3
580644	99	17	2,8	cyclictest	0	-21	swapper/3	05:52:45	3
580644	99	17	2,10	cyclictest	0	-21	swapper/3	05:49:52	3
580644	99	17	1,7	cyclictest	0	-21	swapper/3	06:29:47	3
580644	99	16	2,5	cyclictest	0	-21	swapper/3	05:24:48	3
580644	99	15	3,8	cyclictest	0	-21	swapper/3	05:57:49	3
580644	99	15	2,7	cyclictest	0	-21	swapper/3	06:34:51	3
580644	99	15	1,7	cyclictest	0	-21	swapper/3	06:39:52	3
580644	99	14	6,5	cyclictest	0	-21	swapper/3	06:11:09	3
580644	99	14	3,8	cyclictest	0	-21	swapper/3	05:44:54	3
580644	99	14	3,5	cyclictest	0	-21	swapper/3	05:29:49	3
580644	99	14	2,6	cyclictest	0	-21	swapper/3	06:00:21	3
580644	99	13	4,4	cyclictest	0	-21	swapper/3	05:19:53	3
580644	99	13	1,7	cyclictest	0	-21	swapper/3	06:24:55	3
580644	99	13	1,7	cyclictest	0	-21	swapper/3	05:09:53	3
580644	99	12	2,5	cyclictest	0	-21	swapper/3	06:19:56	3
580644	99	12	2,5	cyclictest	0	-21	swapper/3	06:19:56	3
580644	99	10	2,5	cyclictest	0	-21	swapper/3	05:14:51	3
580644	99	10	1,6	cyclictest	0	-21	swapper/3	05:05:02	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2019-05-28 - 00:17