OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, 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
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rackeslot4s.osadl.org (updated Sun Nov 30, 2025 00:44:05)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
680062	99	39	34,3	cyclictest	949840	-21	latency_hist	23:30:00	2
680061	99	39	36,2	cyclictest	685442	-21	kworker/u8:2+flush-259:0	21:03:29	1
680060	99	38	34,3	cyclictest	773094	-21	kworker/u8:3+flush-259:0	20:40:19	0
680062	99	36	30,4	cyclictest	2698871	-21	systemd-journal	23:14:59	2
680067	99	34	28,4	cyclictest	2698871	-21	systemd-journal	00:35:18	3
680061	99	34	31,2	cyclictest	705950	-21	kworker/u8:0+flush-259:0	19:50:18	1
680061	99	34	27,5	cyclictest	986265	-21	latency_hist	00:05:00	1
680067	99	33	28,4	cyclictest	835391	-21	gpgv	21:40:00	3
680062	99	32	28,3	cyclictest	981140	-21	kworker/u8:0+flush-259:0	00:15:17	2
680060	99	32	26,4	cyclictest	913361	-21	latency_hist	22:55:02	0
680067	99	31	26,4	cyclictest	793730	-21	kworker/u8:1+flush-259:0	22:00:00	3
680062	99	31	23,5	cyclictest	788574	-21	latency_hist	20:55:00	2
680060	99	31	23,5	cyclictest	711082	-21	latency_hist	19:40:01	0
680067	99	30	24,4	cyclictest	846666	-21	/usr/sbin/munin	21:50:17	3
680067	99	28	13,2	cyclictest	793694	-21	sh	21:00:00	3
680061	99	28	24,3	cyclictest	882495	-21	kworker/u8:0+flush-259:0	22:35:00	1
680062	99	27	23,2	cyclictest	685442	-21	kworker/u8:2+flush-259:0	21:20:00	2
680061	99	27	23,3	cyclictest	793730	-21	kworker/u8:1+events_unbound	22:10:00	1
680060	99	27	24,2	cyclictest	814699	-21	kworker/u8:4+flush-259:0	22:10:00	0
680060	99	27	24,2	cyclictest	696119	-21	kworker/u8:3+events_unbound	19:30:01	0
680060	99	27	24,2	cyclictest	696119	-21	kworker/u8:3+events_unbound	19:30:01	0
680060	99	27	23,3	cyclictest	631729	-21	kworker/u8:0+events_unbound	19:15:20	0
680062	99	26	22,3	cyclictest	981140	-21	kworker/u8:0+events_unbound	00:25:19	2
680062	99	26	22,3	cyclictest	773103	-21	apt	20:40:01	2
680061	99	26	22,3	cyclictest	705950	-21	kworker/u8:0+flush-259:0	20:00:00	1
680060	99	26	19,5	cyclictest	742078	-21	latency_hist	20:10:01	0
680062	99	25	19,4	cyclictest	735970	-21	ntpq	20:00:23	2
680061	99	25	22,2	cyclictest	934423	-21	kworker/u8:2+events_unbound	23:25:18	1
680060	99	25	20,3	cyclictest	846028	-21	gpgv	21:50:00	0
680067	99	24	18,4	cyclictest	799276	-21	diskstats	21:05:17	3
680067	99	23	12,2	cyclictest	897925	-21	cron	22:40:00	3
680062	99	23	18,4	cyclictest	981140	-21	kworker/u8:0+flush-259:0	00:15:01	2
680061	99	23	19,3	cyclictest	965523	-21	kworker/u8:2+events_unbound	23:57:32	1
680061	99	23	19,3	cyclictest	965523	-21	kworker/u8:2+events_unbound	23:57:31	1
680061	99	23	18,4	cyclictest	830127	-21	latency_hist	21:35:00	1
680061	99	23	18,4	cyclictest	2698871	-21	systemd-journal	20:30:00	1
680060	99	23	19,3	cyclictest	773094	-21	kworker/u8:3+events_unbound	21:05:20	0
680060	99	23	15,6	cyclictest	917582	-21	ntpq	22:55:22	0
680067	99	22	17,4	cyclictest	845094	-21	ntpq	21:45:22	3
680067	99	22	17,4	cyclictest	2698871	-21	systemd-journal	22:07:31	3
680067	99	22	16,4	cyclictest	778275	-21	latency_hist	20:45:01	3
680062	99	22	15,5	cyclictest	756752	-21	ntpq	20:20:24	2
680061	99	22	19,2	cyclictest	814694	-21	kworker/u8:3+flush-259:0	21:20:31	1
680061	99	22	18,3	cyclictest	970662	-21	kworker/u8:4+events_unbound	23:55:00	1
680061	99	22	14,6	cyclictest	747231	-21	latency_hist	20:15:00	1
680060	99	22	18,3	cyclictest	690658	-21	apt-get	19:20:12	0
680060	99	22	1,19	cyclictest	798872	-21	unin-run	21:05:00	0
680067	99	21	18,2	cyclictest	918492	-21	cron	23:00:01	3
680067	99	21	14,5	cyclictest	2698871	-21	systemd-journal	19:25:00	3
680062	99	21	15,4	cyclictest	2698871	-21	systemd-journal	23:59:32	2
680062	99	21	15,4	cyclictest	2698871	-21	systemd-journal	23:59:31	2
680061	99	21	17,3	cyclictest	1018315	-21	apt-get	00:35:13	1
680060	99	21	18,2	cyclictest	814699	-21	kworker/u8:4+events_unbound	22:40:01	0
680060	99	21	15,4	cyclictest	680006	-21	latency_hist	19:10:00	0
680067	99	20	16,3	cyclictest	685442	-21	kworker/u8:2+flush-259:0	20:02:44	3
680067	99	20	15,3	cyclictest	825224	-21	/usr/sbin/munin	21:30:23	3
680062	99	20	13,5	cyclictest	846516	-21	cat	21:50:01	2
680061	99	20	17,2	cyclictest	685442	-21	kworker/u8:2+flush-259:0	20:15:16	1
680061	99	20	16,3	cyclictest	705950	-21	kworker/u8:0+flush-259:0	19:45:00	1
680061	99	20	16,3	cyclictest	685442	-21	kworker/u8:2+flush-259:0	19:35:21	1
680067	99	19	14,3	cyclictest	820110	-21	apt-get	21:25:12	3
680062	99	19	16,2	cyclictest	773094	-21	kworker/u8:3+flush-259:0	21:00:19	2
680061	99	19	15,3	cyclictest	939779	-21	kworker/u8:0+flush-259:0	23:35:15	1
680061	99	19	15,3	cyclictest	882495	-21	kworker/u8:0+events_unbound	22:45:17	1
680061	99	19	15,3	cyclictest	814694	-21	kworker/u8:3+flush-259:0	21:25:18	1
680061	99	19	13,4	cyclictest	680461	-21	diskstats	19:10:14	1
680060	99	19	15,3	cyclictest	773094	-21	kworker/u8:3+events_unbound	20:45:18	0
680060	99	19	14,4	cyclictest	997259	-21	apt-get	00:15:12	0
680060	99	19	13,4	cyclictest	887658	-21	latency_hist	22:30:01	0
680067	99	18	16,1	cyclictest	0	-21	swapper/3	22:55:00	3
680067	99	18	15,2	cyclictest	1	-21	systemd	00:20:00	3
680067	99	18	13,3	cyclictest	2698871	-21	systemd-journal	23:17:31	3
680067	99	18	11,5	cyclictest	950253	-21	diskstats	23:30:12	3
680062	99	18	16,1	cyclictest	0	-21	swapper/2	19:14:59	2
680062	99	18	13,4	cyclictest	835279	-21	apt-get	21:40:00	2
680061	99	18	14,3	cyclictest	814699	-21	kworker/u8:4+events_unbound	22:35:18	1
680061	99	18	14,3	cyclictest	804041	-21	kworker/u8:0+flush-259:0	21:10:25	1
680061	99	18	14,3	cyclictest	773094	-21	kworker/u8:3+events_unbound	20:54:33	1
680061	99	18	13,4	cyclictest	986533	-21	apt-get	00:05:13	1
680061	99	18	11,5	cyclictest	1001268	-21	ntpq	00:15:21	1
680060	99	18	15,2	cyclictest	696119	-21	kworker/u8:3+events_unbound	20:00:00	0
680060	99	18	13,4	cyclictest	809792	-21	/usr/sbin/munin	21:15:16	0
680060	99	18	12,4	cyclictest	934375	-21	latency_hist	23:15:00	0
680060	99	18	12,4	cyclictest	882475	-21	latency_hist	22:25:01	0
680067	99	17	14,2	cyclictest	871341	-21	ntp_offset	22:10:22	3
680067	99	17	12,3	cyclictest	975611	-21	gpgv	23:55:01	3
680062	99	17	9,6	cyclictest	778283	-21	munin-run	20:45:01	2
680062	99	17	13,3	cyclictest	856958	-21	kworker/u8:3+flush-259:0	22:10:17	2
680062	99	17	13,3	cyclictest	685442	-21	kworker/u8:2+flush-259:0	20:45:27	2
680061	99	17	13,3	cyclictest	934423	-21	kworker/u8:2+events_unbound	23:30:16	1
680061	99	17	13,3	cyclictest	918521	-21	kworker/u8:0+flush-259:0	23:05:17	1
680061	99	17	12,4	cyclictest	835461	-21	cp	21:40:00	1
680061	99	17	10,5	cyclictest	918499	-21	latency_hist	23:00:01	1
680060	99	17	14,2	cyclictest	731714	-21	kworker/u8:1+events_unbound	20:25:17	0
680060	99	17	14,2	cyclictest	614	50	irq/134-enp0s29f1:tx-0	00:00:22	0
680060	99	17	14,2	cyclictest	606	50	irq/133-enp0s29f1:rx-0	19:51:53	0
680060	99	17	13,3	cyclictest	814699	-21	kworker/u8:4+events_unbound	22:40:25	0
680060	99	17	12,4	cyclictest	767964	-21	sh	20:35:01	0
680062	99	16	9,1	cyclictest	0	-21	swapper/2	22:50:00	2
680062	99	16	3,7	cyclictest	731706	-21	munin-run	20:00:00	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2021-09-01 - 00:34