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 #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 Wed Feb 18, 2026 00:44:07)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
453302	99	38	36,1	cyclictest	478993	-21	kworker/u8:2+flush-259:0	19:35:21	3
453295	99	35	30,3	cyclictest	738989	-21	kworker/u8:0+flush-259:0	23:45:16	1
453295	99	34	27,5	cyclictest	587743	-21	ntpq	21:15:21	1
453302	99	33	28,3	cyclictest	567749	-21	/usr/sbin/munin	21:00:16	3
453295	99	33	29,3	cyclictest	640589	-21	kworker/u8:2+flush-259:0	23:15:14	1
453298	99	31	25,4	cyclictest	567085	-21	apt-get	21:00:01	2
453298	99	30	25,4	cyclictest	593971	-21	kworker/u8:3+flush-259:0	21:30:25	2
453295	99	30	25,3	cyclictest	593971	-21	kworker/u8:3+flush-259:0	21:55:23	1
453295	99	30	24,4	cyclictest	728584	-21	/usr/sbin/munin	23:35:14	1
453292	99	30	24,4	cyclictest	796437	-21	latency_hist	00:40:00	0
453298	99	29	25,3	cyclictest	640589	-21	kworker/u8:2+flush-259:0	22:40:25	2
453295	99	29	26,2	cyclictest	676742	-21	kworker/u8:3+flush-259:0	23:50:13	1
453295	99	29	26,2	cyclictest	640589	-21	kworker/u8:2+events_unbound	22:45:00	1
453298	99	28	25,2	cyclictest	598952	-21	gpgv	21:30:01	2
453295	99	28	25,2	cyclictest	468735	-21	kworker/u8:0+flush-259:0	19:40:22	1
453295	99	27	21,4	cyclictest	770808	-21	/usr/sbin/munin	00:15:23	1
453302	99	26	23,2	cyclictest	625120	-21	idleruntime-cro	21:55:01	3
453298	99	26	22,3	cyclictest	640589	-21	kworker/u8:2+flush-259:0	23:25:16	2
453298	99	26	22,3	cyclictest	437990	-21	kworker/u8:3+flush-259:0	19:25:27	2
453298	99	26	21,3	cyclictest	706499	-21	ntpq	23:10:21	2
453298	99	26	20,4	cyclictest	615054	-21	/usr/sbin/munin	21:45:14	2
453295	99	26	22,3	cyclictest	494432	-21	kworker/u8:0+flush-259:0	19:55:01	1
453292	99	26	20,4	cyclictest	252	-21	systemd-journal	23:35:01	0
453302	99	25	21,3	cyclictest	252	-21	systemd-journal	23:25:00	3
453298	99	25	21,3	cyclictest	556827	-21	kworker/u8:0+flush-259:0	21:20:01	2
453295	99	25	21,3	cyclictest	640589	-21	kworker/u8:2+flush-259:0	00:30:22	1
453295	99	25	20,3	cyclictest	734107	-21	base64	23:40:01	1
453292	99	25	21,3	cyclictest	520335	-21	cat	20:15:00	0
453302	99	24	20,3	cyclictest	468735	-21	kworker/u8:0+flush-259:0	19:40:17	3
453302	99	24	20,2	cyclictest	728295	-21	base64	23:35:01	3
453295	99	24	20,3	cyclictest	640589	-21	kworker/u8:2+flush-259:0	23:25:23	1
453295	99	24	20,3	cyclictest	420655	-21	kworker/u8:0+events_unbound	19:15:14	1
453292	99	24	20,3	cyclictest	676742	-21	kworker/u8:3+events_unbound	23:25:17	0
453292	99	24	18,5	cyclictest	252	-21	systemd-journal	22:35:00	0
453302	99	23	18,3	cyclictest	531220	-21	/usr/sbin/munin	20:25:25	3
453298	99	23	19,3	cyclictest	754921	-21	apt-get	00:00:12	2
453295	99	23	20,2	cyclictest	619993	-21	kworker/u8:1+events_unbound	22:05:21	1
453295	99	23	19,3	cyclictest	640589	-21	kworker/u8:2+events_unbound	00:05:18	1
453295	99	23	19,3	cyclictest	593971	-21	kworker/u8:3+flush-259:0	21:50:15	1
453292	99	23	19,3	cyclictest	619993	-21	kworker/u8:1+events_unbound	22:00:25	0
453302	99	22	18,3	cyclictest	509	-21	rs:main		3
453295	99	22	19,2	cyclictest	619993	-21	kworker/u8:1+events_unbound	23:00:23	1
453295	99	22	19,2	cyclictest	619993	-21	kworker/u8:1+events_unbound	23:00:23	1
453295	99	22	18,3	cyclictest	520208	-21	kworker/u8:2+flush-259:0	20:40:18	1
453295	99	22	15,3	cyclictest	619993	-21	kworker/u8:1+events_unbound	22:05:01	1
453292	99	22	17,4	cyclictest	716713	-21	ntpq	23:20:19	0
453292	99	22	17,3	cyclictest	509885	-21	latency_hist	20:05:01	0
453292	99	22	15,5	cyclictest	573228	-21	cat	21:05:01	0
453302	99	21	17,3	cyclictest	749462	-21	kworker/u8:1+flush-259:0	23:55:21	3
453302	99	21	17,3	cyclictest	556827	-21	kworker/u8:0+flush-259:0	21:05:26	3
453302	99	21	17,3	cyclictest	499811	-21	apt-get	19:55:12	3
453298	99	21	16,3	cyclictest	520574	-21	cp	20:15:01	2
453295	99	21	18,2	cyclictest	640589	-21	kworker/u8:2+flush-259:0	23:20:22	1
453295	99	21	18,2	cyclictest	640589	-21	kworker/u8:2+events_unbound	22:30:15	1
453295	99	21	18,2	cyclictest	478993	-21	kworker/u8:2+events_unbound	19:50:00	1
453295	99	21	17,2	cyclictest	604528	-21	kworker/u8:2+events_unbound	21:45:23	1
453292	99	21	18,2	cyclictest	739093	-21	kworker/u8:5+events_unbound	00:25:26	0
453292	99	21	18,2	cyclictest	676742	-21	kworker/u8:3+flush-259:0	00:20:17	0
453292	99	21	17,3	cyclictest	640589	-21	kworker/u8:2+flush-259:0	22:40:16	0
453302	99	20	17,2	cyclictest	681920	-21	apt-get	22:50:12	3
453302	99	20	16,3	cyclictest	640589	-21	kworker/u8:2+events_unbound	23:40:18	3
453298	99	20	16,3	cyclictest	489087	-21	kworker/u8:3+events_unbound	20:00:23	2
453295	99	20	16,3	cyclictest	490	-21	dbus-daemon	23:35:01	1
453295	99	20	15,3	cyclictest	791527	-21	apt-get	00:35:12	1
453292	99	20	17,2	cyclictest	598953	-21	apt-key	21:30:01	0
453302	99	19	13,4	cyclictest	775784	-21	latency_hist	00:20:01	3
453298	99	19	16,2	cyclictest	463396	-21	kworker/u8:1+events_unbound	19:20:20	2
453295	99	19	16,2	cyclictest	640589	-21	kworker/u8:2+flush-259:0	00:00:20	1
453295	99	19	16,2	cyclictest	593971	-21	kworker/u8:3+events_unbound	21:40:21	1
453295	99	19	16,2	cyclictest	437990	-21	kworker/u8:3+events_unbound	19:25:23	1
453295	99	19	15,3	cyclictest	770449	-21	latency_hist	00:15:01	1
453295	99	19	15,3	cyclictest	640589	-21	kworker/u8:2+flush-259:0	22:15:22	1
453295	99	19	15,3	cyclictest	619993	-21	kworker/u8:1+flush-259:0	22:25:23	1
453295	99	19	15,3	cyclictest	556827	-21	kworker/u8:0+flush-259:0	21:10:16	1
453295	99	19	15,3	cyclictest	520835	-21	kworker/u8:3+events_unbound	20:20:23	1
453295	99	19	15,3	cyclictest	420655	-21	kworker/u8:0+events_unbound	19:10:16	1
453295	99	19	14,3	cyclictest	640589	-21	kworker/u8:2+events_unbound	22:45:24	1
453292	99	19	13,4	cyclictest	629341	-21	ntpq	21:55:18	0
453302	99	18	16,1	cyclictest	515709	-21	irqcore	20:10:17	3
453298	99	18	15,2	cyclictest	619993	-21	kworker/u8:1+events_unbound	22:05:13	2
453298	99	18	15,2	cyclictest	556827	-21	kworker/u8:0+flush-259:0	21:05:13	2
453298	99	18	14,3	cyclictest	478993	-21	kworker/u8:2+flush-259:0	19:35:24	2
453295	99	18	15,2	cyclictest	520208	-21	kworker/u8:2+events_unbound	20:45:15	1
453295	99	18	15,2	cyclictest	520208	-21	kworker/u8:2+events_unbound	20:45:15	1
453295	99	18	14,3	cyclictest	593971	-21	kworker/u8:3+flush-259:0	21:35:00	1
453295	99	18	13,3	cyclictest	676742	-21	kworker/u8:3+events_unbound	00:20:13	1
453295	99	18	13,3	cyclictest	252	-21	systemd-journal	20:35:09	1
453295	99	18	12,3	cyclictest	520693	-21	base64	20:15:01	1
453292	99	18	13,3	cyclictest	252	-21	systemd-journal	19:35:08	0
453302	99	17	15,1	cyclictest	637956	-21	kthreadcore	22:05:18	3
453302	99	17	15,1	cyclictest	619993	-21	kworker/u8:1+flush-259:0	22:10:21	3
453302	99	17	14,2	cyclictest	619993	-21	kworker/u8:1+flush-259:0	23:00:25	3
453302	99	17	14,2	cyclictest	619993	-21	kworker/u8:1+flush-259:0	23:00:25	3
453302	99	17	13,3	cyclictest	567735	-21	kworker/u8:1+events_unbound	21:20:23	3
453302	99	17	13,3	cyclictest	520208	-21	kworker/u8:2+events_unbound	20:55:21	3
453302	99	17	11,4	cyclictest	776019	-21	/usr/sbin/munin	00:20:20	3
453302	99	17	11,4	cyclictest	509	-21	rs:main		3
453302	99	17	11,4	cyclictest	252	-21	systemd-journal	00:39:54	3
453298	99	17	14,2	cyclictest	776466	-21	irqcore	00:20:17	2
453298	99	17	14,2	cyclictest	691924	-21	turbostat.cron	23:00:00	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


Access: public		Short link to this page
This page was last modified on 2021-09-01 - 00:34