OSADL QA Farm on Real-time of Mainline Linux

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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 Mon Sep 07, 2026 00:44:13)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1956584	2	153	0,3	sleep3	75	-21	kworker/3:1+events	20:14:26	3
2068817	2	104	0,2	sleep1	28	1	rcuc/1	22:09:15	1
2019821	2	76	0,4	chrt	0	-21	swapper/3	21:19:18	3
1890805	99	51	45,4	cyclictest	1957295	-21	kworker/u8:2+events_unbound	21:19:13	1
1890805	99	50	44,4	cyclictest	2205559	-21	kworker/u8:2+flush-8:0	00:25:01	1
1890805	99	50	41,7	cyclictest	2011494	-21	latency_hist	21:10:01	1
1890805	99	49	43,4	cyclictest	2091095	-21	kworker/u8:1+flush-8:0	23:14:26	1
1890805	99	44	38,4	cyclictest	2101057	-21	kworker/u8:3+flush-8:0	23:44:11	1
1890805	99	44	37,5	cyclictest	1957295	-21	kworker/u8:2+flush-8:0	20:54:25	1
1890805	99	43	38,4	cyclictest	1972206	-21	kworker/u8:1+flush-8:0	20:34:23	1
1890805	99	43	38,4	cyclictest	1890674	-21	kworker/u8:0+events_unbound	19:34:22	1
2204310	2	42	0,2	chrt	75	-21	kworker/3:1-events	00:24:17	3
1890805	99	42	33,6	cyclictest	2086138	-21	latency_hist	22:25:00	1
1890802	99	42	36,4	cyclictest	1035700	-21	kworker/u8:1+events_unbound	19:19:26	0
1890802	99	42	33,7	cyclictest	2161327	-21	/usr/sbin/munin	23:44:24	0
2034884	2	41	0,3	sleep2	0	-21	swapper/2	21:34:17	2
1890805	99	40	34,5	cyclictest	1890674	-21	kworker/u8:0+flush-8:0	20:19:25	1
1890805	99	40	33,5	cyclictest	1972206	-21	kworker/u8:1+events_unbound	22:15:02	1
1890805	99	40	33,5	cyclictest	1972206	-21	kworker/u8:1+events_unbound	22:15:02	1
1890805	99	40	32,6	cyclictest	1957295	-21	kworker/u8:2+flush-8:0	21:49:28	1
1890805	99	39	34,4	cyclictest	2205559	-21	kworker/u8:2+flush-8:0	00:34:24	1
1890805	99	39	34,3	cyclictest	2197010	-21	irqrtprio	00:19:17	1
1890805	99	38	33,4	cyclictest	1957295	-21	kworker/u8:2+events_unbound	22:44:26	1
1890805	99	38	32,4	cyclictest	1880893	-21	kworker/u8:3+flush-8:0	19:14:26	1
1890805	99	37	32,3	cyclictest	2216358	-21	fschecks_count	00:39:11	1
1890805	99	37	29,6	cyclictest	1981873	-21	latency_hist	20:40:01	1
1890802	99	37	28,7	cyclictest	2170755	-21	cp	23:50:01	0
1890808	99	36	28,6	cyclictest	1962231	-21	cat	20:20:01	2
1890805	99	36	30,4	cyclictest	1922886	-21	apt-get	19:44:07	1
1890805	99	35	30,3	cyclictest	2027838	-21	irqrtprio	21:29:13	1
1890802	99	35	30,4	cyclictest	1890674	-21	kworker/u8:0+flush-8:0	20:29:14	0
1890805	99	34	29,3	cyclictest	1957295	-21	kworker/u8:2+events_unbound	20:44:09	1
1890805	99	34	28,5	cyclictest	2101057	-21	kworker/u8:3+events_unbound	23:50:02	1
1890805	99	34	24,7	cyclictest	278	-21	systemd-journal	19:46:49	1
1890805	99	33	28,3	cyclictest	2076521	-21	kworker/u8:3+events_unbound	22:29:11	1
1890805	99	33	27,4	cyclictest	2180800	-21	kworker/u8:1+events_unbound	00:29:20	1
1890805	99	33	27,4	cyclictest	1035700	-21	kworker/u8:1+flush-8:0	19:59:23	1
1890802	99	33	23,8	cyclictest	2160651	-21	cp	23:40:00	0
1890805	99	32	27,3	cyclictest	1890674	-21	kworker/u8:0+events_unbound	20:25:00	1
1890805	99	32	26,5	cyclictest	2135598	-21	kworker/u8:0+flush-8:0	23:29:10	1
1890805	99	32	26,4	cyclictest	2135598	-21	kworker/u8:0+flush-8:0	23:59:25	1
1890805	99	32	26,4	cyclictest	1947004	-21	cron	20:05:01	1
2210058	2	31	0,4	sleep0	0	-21	swapper/0	00:29:24	0
1890808	99	31	27,3	cyclictest	1035700	-21	kworker/u8:1-ext4-rsv-conversion	20:10:00	2
1890805	99	31	27,3	cyclictest	2135598	-21	kworker/u8:0+events_unbound	23:19:26	1
1890805	99	31	27,3	cyclictest	1957295	-21	kworker/u8:2+flush-8:0	21:34:25	1
1890805	99	31	26,4	cyclictest	1035700	-21	kworker/u8:1+flush-8:0	20:09:25	1
1890805	99	31	26,3	cyclictest	2135598	-21	kworker/u8:0+flush-8:0	23:39:24	1
1890805	99	31	24,5	cyclictest	1880893	-21	kworker/u8:3+flush-8:0	19:19:22	1
1890805	99	31	23,6	cyclictest	2065509	-21	ntpq	22:04:19	1
1890802	99	31	27,2	cyclictest	1962256	-21	cat	20:20:01	0
1890802	99	31	23,6	cyclictest	1987384	-21	/usr/sbin/munin	20:49:31	0
1890808	99	30	25,4	cyclictest	1976817	-21	unixbench_multi	20:34:26	2
1890808	99	30	12,7	cyclictest	1918373	-21	awk	19:39:13	2
1890805	99	30	26,3	cyclictest	2101057	-21	kworker/u8:3+events_unbound	22:59:27	1
1890805	99	30	25,3	cyclictest	1954686	-21	kthreadcore	20:14:17	1
1890802	99	30	26,2	cyclictest	2139857	-21	strings	23:19:20	0
1890802	99	30	24,4	cyclictest	2077520	-21	irqrtprio	22:19:16	0
1890802	99	30	24,4	cyclictest	2077520	-21	irqrtprio	22:19:16	0
1890802	99	30	21,7	cyclictest	2056276	-21	latency_hist	21:55:01	0
1890802	99	30	0,21	cyclictest	2205597	-21	sshd	00:24:59	0
1890808	99	29	24,3	cyclictest	2002561	-21	fschecks_time	21:04:13	2
1890805	99	29	24,3	cyclictest	2191350	-21	aten2_r5power_c	00:14:11	1
1890805	99	29	23,5	cyclictest	1957295	-21	kworker/u8:2+flush-8:0	21:44:26	1
1890805	99	29	23,4	cyclictest	2101057	-21	kworker/u8:3+events_unbound	00:09:22	1
1890805	99	29	23,4	cyclictest	1957295	-21	kworker/u8:2+events_unbound	21:39:17	1
1890802	99	29	25,3	cyclictest	2076037	-21	systemd-run	22:15:00	0
1890802	99	29	25,2	cyclictest	1927282	-21	munin-run	19:45:01	0
1890802	99	29	24,4	cyclictest	2076521	-21	kworker/u8:3+flush-8:0	22:29:29	0
1890802	99	29	24,4	cyclictest	1890674	-21	kworker/u8:0+flush-8:0	21:49:20	0
1890802	99	29	24,3	cyclictest	2131548	-21	fschecks_time	23:14:12	0
1890802	99	29	23,4	cyclictest	278	-21	systemd-journal	22:33:49	0
1890802	99	29	23,4	cyclictest	2200646	-21	cron	00:20:00	0
1890802	99	29	19,8	cyclictest	2030838	-21	ntpq	21:29:18	0
1890808	99	28	22,4	cyclictest	2021455	-21	unixbench_multi	21:19:35	2
1890805	99	28	3,17	cyclictest	571	-21	snmpd	23:49:10	1
1890805	99	28	24,2	cyclictest	1918675	-21	irqrtprio	19:39:15	1
1890805	99	28	23,4	cyclictest	1880893	-21	kworker/u8:3+flush-8:0	19:54:14	1
1890805	99	28	22,3	cyclictest	1972206	-21	kworker/u8:1+events_unbound	21:59:17	1
1890805	99	28	21,5	cyclictest	1972206	-21	kworker/u8:1+flush-8:0	21:14:10	1
1890805	99	28	18,8	cyclictest	1911817	-21	ntpq	19:29:18	1
1890802	99	28	24,2	cyclictest	2106830	-21	fschecks_count	22:49:13	0
1890802	99	28	24,2	cyclictest	1895866	-21	latency_hist	19:15:01	0
1890802	99	28	23,4	cyclictest	1880893	-21	kworker/u8:3+flush-8:0	19:49:31	0
1890802	99	28	2,25	cyclictest	0	-21	swapper/0	21:44:26	0
1890808	99	27	6,6	cyclictest	2073663	-21	cut	22:14:16	2
1890805	99	27	22,3	cyclictest	2101057	-21	kworker/u8:3+flush-8:0	00:04:15	1
1890805	99	27	19,6	cyclictest	2091095	-21	kworker/u8:1+events_unbound	23:04:09	1
1890802	99	27	6,20	cyclictest	2041394	-21	kworker/0:2+events	21:58:39	0
1890802	99	27	23,3	cyclictest	1890674	-21	kworker/u8:0+flush-8:0	19:34:20	0
1890802	99	27	2,24	cyclictest	1922341	-21	kworker/0:0+events	20:09:15	0
1890802	99	27	2,24	cyclictest	0	-21	swapper/0	21:19:33	0
1890802	99	27	2,23	cyclictest	2110931	-21	kworker/0:0+events	23:54:07	0
1890802	99	27	22,3	cyclictest	1937113	-21	cron	19:55:00	0
1890808	99	26	22,3	cyclictest	1956766	-21	unixbench_multi	20:14:27	2
1890805	99	26	20,4	cyclictest	1957295	-21	kworker/u8:2+flush-8:0	21:04:21	1
1890805	99	26	19,5	cyclictest	2022185	-21	apt-get	21:24:08	1
1890805	99	26	17,7	cyclictest	278	-21	systemd-journal	23:33:50	1
1890802	99	26	6,19	cyclictest	2110931	-21	kworker/0:0+events	23:28:59	0
1890802	99	26	22,3	cyclictest	1996684	-21	idleruntime-cro	20:55:00	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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