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 Sun May 10, 2026 12:44:06)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3567912	99	41	38,2	cyclictest	3849662	-21	kworker/u8:1+events_unbound	11:50:00	3
3567907	99	41	39,1	cyclictest	3624682	-21	fwupd	08:02:20	2
3567907	99	41	34,5	cyclictest	3891575	-21	gpgv	12:20:00	2
3567907	99	41	34,5	cyclictest	3891575	-21	gpgv	12:20:00	2
3567912	99	39	37,1	cyclictest	3744950	-21	kworker/u8:1+flush-259:0	10:40:25	3
3567912	99	38	35,2	cyclictest	3630107	-21	kworker/u8:3+events_unbound	08:30:01	3
3567912	99	38	32,4	cyclictest	3776920	-21	cp	10:30:01	3
3567907	99	38	34,3	cyclictest	3897019	-21	apt-get	12:24:59	2
3567912	99	36	33,2	cyclictest	3508238	-21	kworker/u8:4+events_unbound	07:45:22	3
3567912	99	36	31,4	cyclictest	3802453	-21	latency_hist	10:55:00	3
3567907	99	36	33,2	cyclictest	3593838	-21	kworker/u8:0+events_unbound	09:14:23	2
3567912	99	34	31,2	cyclictest	3875542	-21	kworker/u8:0+flush-259:0	12:15:16	3
3567912	99	34	31,2	cyclictest	3875542	-21	kworker/u8:0+flush-259:0	12:15:16	3
3567912	99	34	31,2	cyclictest	3744950	-21	kworker/u8:1+events_unbound	10:10:14	3
3567912	99	34	27,2	cyclictest	3630107	-21	kworker/u8:3+events_unbound	08:35:25	3
3567904	99	34	30,2	cyclictest	3744950	-21	kworker/u8:1+events_unbound	10:40:19	1
3567901	99	34	30,3	cyclictest	3833893	-21	gpgv	11:25:01	0
3567901	99	34	28,4	cyclictest	3625168	-21	/usr/sbin/munin	08:05:15	0
3567912	99	33	30,2	cyclictest	3593838	-21	kworker/u8:0+events_unbound	08:50:27	3
3567904	99	33	30,2	cyclictest	3573221	-21	kworker/u8:3+events_unbound	07:15:25	1
3567904	99	33	29,3	cyclictest	3744950	-21	kworker/u8:1+flush-259:0	10:35:25	1
3567901	99	33	27,4	cyclictest	3708393	-21	apt-get	09:24:59	0
3567901	99	33	26,5	cyclictest	3874653	-21	ntpq	12:00:19	0
3567912	99	32	30,2	cyclictest	3671455	-21	kworker/u8:1+events_unbound	09:10:00	3
3567912	99	32	29,2	cyclictest	3849662	-21	kworker/u8:1+events_unbound	12:00:12	3
3567912	99	32	29,2	cyclictest	3792382	-21	kworker/u8:0+flush-259:0	11:40:23	3
3567912	99	32	29,2	cyclictest	3755292	-21	kworker/u8:3+events_unbound	10:20:15	3
3567912	99	32	27,3	cyclictest	3823042	-21	latency_hist	11:15:01	3
3567904	99	32	26,4	cyclictest	3908416	-21	apt-get	12:35:11	1
3567901	99	32	29,2	cyclictest	3792382	-21	kworker/u8:0+flush-259:0	10:50:00	0
3567912	99	31	28,2	cyclictest	3562718	-21	kworker/u8:0+flush-259:0	07:24:02	3
3567904	99	31	28,2	cyclictest	3744950	-21	kworker/u8:1+flush-259:0	10:35:01	1
3567904	99	31	28,2	cyclictest	3562718	-21	kworker/u8:0+flush-259:0	07:10:20	1
3567901	99	31	1,28	cyclictest	1	-21	systemd	09:05:01	0
3567912	99	30	24,4	cyclictest	252	-21	systemd-journal	08:48:24	3
3567904	99	30	25,3	cyclictest	3817663	-21	kworker/u8:3+flush-259:0	11:10:21	1
3567901	99	30	26,3	cyclictest	3792382	-21	kworker/u8:0+flush-259:0	11:05:17	0
3567901	99	30	24,4	cyclictest	3802477	-21	kworker/u8:2+flush-259:0	10:55:19	0
3567912	99	29	26,2	cyclictest	3583364	-21	kworker/u8:1+events_unbound	07:40:21	3
3567912	99	29	25,3	cyclictest	3902611	-21	apt-get	12:30:02	3
3567912	99	29	25,3	cyclictest	3817663	-21	kworker/u8:3+events_unbound	11:15:24	3
3567912	99	29	25,3	cyclictest	3604355	-21	kworker/u8:2+events_unbound	08:15:21	3
3567912	99	29	24,4	cyclictest	3885901	-21	gpgv	12:15:00	3
3567901	99	29	25,3	cyclictest	3573256	-21	apt-get	07:15:12	0
3567912	99	28	25,2	cyclictest	3849662	-21	kworker/u8:1+events_unbound	11:54:57	3
3567912	99	28	25,2	cyclictest	3713972	-21	kworker/u8:2+events_unbound	09:30:22	3
3567912	99	28	25,2	cyclictest	3508238	-21	kworker/u8:4+events_unbound	07:52:25	3
3567907	99	28	21,5	cyclictest	3599202	-21	latency_hist	07:40:01	2
3567907	99	28	21,5	cyclictest	3599202	-21	latency_hist	07:40:00	2
3567904	99	28	24,3	cyclictest	3583364	-21	kworker/u8:1+flush-259:0	07:30:25	1
3567904	99	28	22,4	cyclictest	3729196	-21	kworker/u8:0+events_unbound	09:50:12	1
3567901	99	28	23,4	cyclictest	3593838	-21	kworker/u8:0+flush-259:0	07:35:17	0
3567901	99	28	23,4	cyclictest	3593838	-21	kworker/u8:0+flush-259:0	07:35:17	0
3567901	99	28	22,4	cyclictest	3792149	-21	latency_hist	10:45:01	0
3567912	99	27	24,2	cyclictest	3802477	-21	kworker/u8:2+events_unbound	11:22:26	3
3567912	99	27	24,2	cyclictest	3671455	-21	kworker/u8:1+events_unbound	09:13:27	3
3567912	99	27	22,2	cyclictest	3729196	-21	kworker/u8:0+events_unbound	10:05:23	3
3567904	99	27	22,4	cyclictest	3661343	-21	apt-get	08:40:11	1
3567901	99	27	20,5	cyclictest	3754399	-21	ntpq	10:05:22	0
3567901	99	27	19,6	cyclictest	3724711	-21	diskstats	09:40:14	0
3567912	99	26	24,2	cyclictest	3744950	-21	kworker/u8:1+events_unbound	10:38:27	3
3567912	99	26	23,2	cyclictest	3744950	-21	kworker/u8:1+events_unbound	10:49:27	3
3567912	99	26	23,2	cyclictest	3681679	-21	kworker/u8:3+events_unbound	09:40:20	3
3567912	99	26	23,2	cyclictest	3593838	-21	kworker/u8:0+events_unbound	08:55:15	3
3567912	99	26	21,2	cyclictest	3891678	-21	kworker/u8:2+events_unbound	12:20:15	3
3567912	99	26	21,2	cyclictest	3792382	-21	kworker/u8:0+events_unbound	10:59:28	3
3567904	99	26	23,2	cyclictest	3713972	-21	kworker/u8:2+flush-259:0	09:55:23	1
3567904	99	26	23,2	cyclictest	3562718	-21	kworker/u8:0+events_unbound	07:20:23	1
3567904	99	26	22,3	cyclictest	3573221	-21	kworker/u8:3+events_unbound	07:29:26	1
3567912	99	25	21,3	cyclictest	3671455	-21	kworker/u8:1+events_unbound	09:04:27	3
3567907	99	25	20,4	cyclictest	252	-21	systemd-journal	08:00:01	2
3567904	99	25	22,2	cyclictest	3844281	-21	kworker/u8:3+events_unbound	11:34:53	1
3567904	99	25	22,2	cyclictest	3671455	-21	kworker/u8:1+events_unbound	09:20:26	1
3567904	99	25	21,3	cyclictest	3792382	-21	kworker/u8:0+events_unbound	11:00:20	1
3567904	99	25	21,3	cyclictest	3593838	-21	kworker/u8:0+flush-259:0	08:20:16	1
3567901	99	25	21,3	cyclictest	3713972	-21	kworker/u8:2+flush-259:0	09:35:00	0
3567901	99	25	20,4	cyclictest	3630324	-21	/usr/sbin/munin	08:10:16	0
3567901	99	25	0,23	cyclictest	1	-21	systemd	10:33:26	0
3567912	99	24	21,2	cyclictest	3792382	-21	kworker/u8:0+events_unbound	11:25:25	3
3567912	99	24	21,2	cyclictest	3681679	-21	kworker/u8:3+flush-259:0	09:25:21	3
3567912	99	24	20,3	cyclictest	3792382	-21	kworker/u8:0+events_unbound	11:38:27	3
3567912	99	24	20,2	cyclictest	3593838	-21	kworker/u8:0+events_unbound	08:30:17	3
3567904	99	24	21,2	cyclictest	3792382	-21	kworker/u8:0+events_unbound	10:54:44	1
3567904	99	24	21,2	cyclictest	3593838	-21	kworker/u8:0+flush-259:0	08:30:24	1
3567904	99	24	20,3	cyclictest	3860040	-21	kworker/u8:0+events_unbound	11:54:28	1
3567904	99	24	20,3	cyclictest	3849662	-21	kworker/u8:1+flush-259:0	11:44:27	1
3567904	99	24	20,3	cyclictest	3744950	-21	kworker/u8:1+events_unbound	10:45:13	1
3567904	99	24	1,14	cyclictest	3734603	-21	awk	09:50:00	1
3567912	99	23	20,2	cyclictest	3729648	-21	kworker/u8:4+events_unbound	10:04:34	3
3567912	99	23	19,3	cyclictest	3875542	-21	kworker/u8:0+events_unbound	12:08:27	3
3567912	99	23	17,4	cyclictest	3724293	-21	latency_hist	09:40:01	3
3567912	99	23	17,2	cyclictest	3713972	-21	kworker/u8:2+events_unbound	09:45:21	3
3567907	99	23	19,3	cyclictest	3776288	-21	apt-get	10:30:01	2
3567904	99	23	19,3	cyclictest	3844281	-21	kworker/u8:3+events_unbound	11:35:19	1
3567904	99	23	19,3	cyclictest	3744950	-21	kworker/u8:1+events_unbound	10:10:21	1
3567904	99	23	19,3	cyclictest	3671455	-21	kworker/u8:1+events_unbound	09:05:14	1
3567904	99	23	19,2	cyclictest	3849662	-21	kworker/u8:1+events_unbound	11:45:18	1
3567904	99	23	17,4	cyclictest	252	-21	systemd-journal	11:20:26	1
3567901	99	23	20,2	cyclictest	3593838	-21	kworker/u8:0+events_unbound	08:00:00	0
3567901	99	23	19,3	cyclictest	3583364	-21	kworker/u8:1+flush-259:0	07:30:17	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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