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 376 highest latencies:

System rack2slot7s.osadl.org (updated Sat Dec 13, 2025 07:55:49)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1269042	99	58	48,7	cyclictest	2065108	-21	sh	06:09:40	1
1269042	99	58	48,7	cyclictest	2065108	-21	sh	06:09:40	1
1269041	99	51	45,4	cyclictest	2072554	-21	sort	06:10:02	0
1269041	99	51	45,4	cyclictest	2072554	-21	sort	06:10:02	0
1269043	99	47	39,5	cyclictest	2045468	-21	sh	06:08:55	2
1269043	99	47	39,5	cyclictest	2045468	-21	sh	06:08:55	2
1269043	99	47	39,4	cyclictest	2112174	-21	multi.sh	06:11:34	2
1269043	99	45	37,5	cyclictest	1554579	-21	sh	05:42:45	2
1269042	99	45	36,6	cyclictest	2129112	-21	sh	06:12:15	1
1269042	99	45	35,7	cyclictest	1535146	-21	sh	05:41:55	1
1269041	99	45	27,16	cyclictest	2105442	-21	wc	06:11:19	0
1269042	99	41	34,4	cyclictest	1579801	-21	spawn	06:03:12	1
1269041	99	41	34,4	cyclictest	1490867	-21	sh	05:39:49	0
1269041	99	41	32,7	cyclictest	1270733	-21	kworker/u8:2+xprtiod	05:41:02	0
1269043	99	40	32,5	cyclictest	1576265	-21	fstime	05:52:14	2
1269043	99	40	32,5	cyclictest	1576265	-21	fstime	05:52:14	2
1269043	99	39	32,4	cyclictest	1744153	-21	spawn	06:03:30	2
1269042	99	39	28,8	cyclictest	0	-21	swapper/1	05:49:59	1
1269043	99	38	30,5	cyclictest	2153585	-21	systemd-run	06:30:01	2
1269043	99	38	30,5	cyclictest	1493669	-21	awk	05:40:00	2
1269043	99	38	30,5	cyclictest	1456363	-21	spawn	05:35:01	2
1269043	99	38	30,5	cyclictest	1456363	-21	spawn	05:35:01	2
1269043	99	38	30,5	cyclictest	1273635	-21	whetstone-doubl	05:20:01	2
1269041	99	38	31,4	cyclictest	1591771	-21	spawn	06:02:53	0
1269042	99	37	29,5	cyclictest	2149699	-21	fschecks_time	06:19:33	1
1269043	99	36	28,5	cyclictest	564	-21	dbus-daemon	06:34:30	2
1269041	99	36	30,4	cyclictest	1579252	-21	Run	06:00:00	0
1269041	99	36	30,4	cyclictest	1579252	-21	Run	06:00:00	0
1269042	99	35	28,4	cyclictest	1487498	-21	multi.sh	05:39:34	1
1269041	99	35	24,9	cyclictest	0	-21	swapper/0	05:29:44	0
1269042	99	34	27,4	cyclictest	1166	-21	mta-sts-daemon	05:21:55	1
1269041	99	34	28,4	cyclictest	1575953	-21	execl	05:50:02	0
1269041	99	34	21,3	cyclictest	0	-21	swapper/0	05:50:09	0
1269041	99	34	21,3	cyclictest	0	-21	swapper/0	05:50:09	0
1269043	99	33	27,3	cyclictest	0	-21	swapper/2	05:57:52	2
1269043	99	33	27,3	cyclictest	0	-21	swapper/2	05:57:52	2
1269043	99	33	25,5	cyclictest	1575952	-21	execl	05:50:02	2
1269042	99	33	27,3	cyclictest	0	-21	swapper/1	05:59:27	1
1269042	99	33	27,3	cyclictest	0	-21	swapper/1	05:59:27	1
1269042	99	33	27,3	cyclictest	0	-21	swapper/1	05:51:02	1
1269042	99	33	27,3	cyclictest	0	-21	swapper/1	05:51:02	1
1269042	99	33	25,5	cyclictest	1432101	-21	unixbench_multi	05:34:49	1
1269042	99	33	25,5	cyclictest	1432101	-21	unixbench_multi	05:34:49	1
1269041	99	33	24,7	cyclictest	2155940	-21	ntp_kernel_pll_	06:39:41	0
1269042	99	32	25,4	cyclictest	1273562	-21	grep	05:19:51	1
1269041	99	32	25,4	cyclictest	1271021	-21	fschecks_count	05:14:31	0
1269041	99	32	24,6	cyclictest	2152080	-21	cron	06:25:01	0
1269041	99	32	24,6	cyclictest	2149811	-21	kernelversion	06:19:35	0
1269043	99	31	22,7	cyclictest	1	-21	systemd	06:22:30	2
1269042	99	31	25,3	cyclictest	0	-21	swapper/1	06:25:01	1
1269042	99	31	23,5	cyclictest	2152460	-21	aten_r2power_fr	06:29:29	1
1269042	99	30	25,2	cyclictest	0	-21	swapper/1	05:15:02	1
1269041	99	29	14,11	cyclictest	1401505	-21	spawn	05:34:40	0
1269041	99	29	14,11	cyclictest	1401505	-21	spawn	05:34:40	0
1269043	99	28	20,5	cyclictest	1270508	-21	systemd-run	05:10:01	2
1269043	99	27	19,5	cyclictest	1166	-21	mta-sts-daemon	05:20:39	2
1269043	99	27	16,8	cyclictest	2149406	-21	find	06:19:29	2
1269042	99	27	20,4	cyclictest	1269278	-21	/usr/sbin/munin	05:09:48	1
1269041	99	27	21,4	cyclictest	1272326	-21	kworker/u8:8-xprtiod	05:19:51	0
1269041	99	27	21,4	cyclictest	1270509	-21	unin-run	05:10:01	0
1269043	99	26	18,5	cyclictest	564	-21	dbus-daemon	05:05:01	2
1269043	99	26	18,5	cyclictest	564	-21	dbus-daemon	05:05:01	2
1269042	99	26	22,2	cyclictest	0	-21	swapper/1	06:40:01	1
1269042	99	26	20,3	cyclictest	0	-21	swapper/1	05:29:41	1
1269043	99	25	19,3	cyclictest	0	-21	swapper/2	06:40:01	2
1269043	99	25	18,3	cyclictest	0	-21	swapper/2	05:14:43	2
1269042	99	25	17,5	cyclictest	2154098	-21	fschecks_count	06:34:32	1
1269041	99	23	19,3	cyclictest	1273693	-21	kworker/u8:12-xprtiod	06:35:01	0
1269041	99	22	10,9	cyclictest	124	50	irq/32-eth0	05:21:40	0
1269041	99	22	10,10	cyclictest	2153184	-21	mailstats	06:29:44	0
1269043	99	21	1,3	cyclictest	17	1	rcu_preempt	05:29:01	2
1269042	99	21	17,3	cyclictest	1269048	-21	kworker/u8:10-xprtiod	05:05:01	1
1269042	99	21	17,3	cyclictest	1269048	-21	kworker/u8:10-xprtiod	05:05:01	1
1269044	99	17	4,8	cyclictest	0	-21	swapper/3	06:01:42	3
1269044	99	17	3,9	cyclictest	0	-21	swapper/3	05:56:14	3
1269044	99	17	3,9	cyclictest	0	-21	swapper/3	05:56:14	3
1269044	99	17	2,9	cyclictest	0	-21	swapper/3	05:39:42	3
1269044	99	16	5,8	cyclictest	0	-21	swapper/3	05:45:16	3
1269044	99	16	1,8	cyclictest	0	-21	swapper/3	06:24:39	3
1269041	99	16	12,2	cyclictest	0	-21	swapper/0	05:05:02	0
1269041	99	16	12,2	cyclictest	0	-21	swapper/0	05:05:02	0
1269044	99	15	3,8	cyclictest	0	-21	swapper/3	06:09:10	3
1269044	99	15	3,8	cyclictest	0	-21	swapper/3	06:09:10	3
1269044	99	15	3,7	cyclictest	0	-21	swapper/3	05:50:05	3
1269044	99	15	3,7	cyclictest	0	-21	swapper/3	05:50:05	3
1269044	99	15	3,6	cyclictest	0	-21	swapper/3	05:27:58	3
1269044	99	15	1,8	cyclictest	0	-21	swapper/3	06:10:58	3
1269044	99	13	2,7	cyclictest	0	-21	swapper/3	05:34:39	3
1269044	99	13	2,7	cyclictest	0	-21	swapper/3	05:34:39	3
1269044	99	13	1,5	cyclictest	0	-21	swapper/3	06:29:39	3
1269044	99	12	1,7	cyclictest	0	-21	swapper/3	05:40:27	3
1269044	99	12	1,6	cyclictest	0	-21	swapper/3	05:24:33	3
1269044	99	12	0,6	cyclictest	0	-21	swapper/3	05:19:43	3
1269044	99	11	1,6	cyclictest	0	-21	swapper/3	06:39:38	3
1269044	99	11	0,6	cyclictest	0	-21	swapper/3	06:34:38	3
1269044	99	10	1,5	cyclictest	0	-21	swapper/3	06:19:38	3
1269044	99	10	1,5	cyclictest	0	-21	swapper/3	05:14:38	3
1269044	99	10	1,5	cyclictest	0	-21	swapper/3	05:09:39	3
1269044	99	9	1,6	cyclictest	0	-21	swapper/3	05:05:01	3
1269044	99	9	1,6	cyclictest	0	-21	swapper/3	05:05:01	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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