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 50 highest latencies:

System rackeslot4s.osadl.org (updated Mon Apr 06, 2026 00:44:06)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
16683	99	41	38,2	cyclictest	37252	-21	kworker/u8:3+events_unbound	20:20:17	1
16686	99	40	36,3	cyclictest	161933	-21	gpgv	21:30:01	2
16683	99	40	37,2	cyclictest	4177560	-21	kworker/u8:2+events_unbound	19:30:12	1
16683	99	39	36,2	cyclictest	120576	-21	kworker/u8:1+flush-259:0	20:55:23	1
16683	99	38	35,2	cyclictest	4177560	-21	kworker/u8:2+events_unbound	19:15:23	1
16683	99	38	35,2	cyclictest	334693	-21	kworker/u8:2+flush-259:0	00:30:25	1
16686	99	36	29,5	cyclictest	252	-21	systemd-journal	19:20:01	2
16690	99	35	32,2	cyclictest	4177560	-21	kworker/u8:2+flush-259:0	19:50:20	3
16683	99	35	32,2	cyclictest	130737	-21	kworker/u8:0+flush-259:0	21:40:00	1
16683	99	35	32,2	cyclictest	130737	-21	kworker/u8:0+events_unbound	21:50:16	1
16683	99	35	31,3	cyclictest	156896	-21	kworker/u8:2+flush-259:0	21:30:18	1
16690	99	34	28,4	cyclictest	94810	-21	latency_hist	20:25:01	3
16686	99	34	31,2	cyclictest	193562	-21	kworker/u8:3+events_unbound	22:05:13	2
16686	99	33	30,2	cyclictest	4177560	-21	kworker/u8:2+flush-259:0	20:05:24	2
16686	99	33	29,3	cyclictest	150490	-21	kworker/u8:3+events_unbound	21:20:22	2
16683	99	33	30,2	cyclictest	334693	-21	kworker/u8:2+flush-259:0	00:35:20	1
16683	99	32	29,2	cyclictest	303100	-21	kworker/u8:0+flush-259:0	23:50:25	1
16683	99	32	29,2	cyclictest	193562	-21	kworker/u8:3+events_unbound	22:10:27	1
16683	99	32	26,5	cyclictest	78418	-21	ntpq	20:05:20	1
16690	99	31	28,2	cyclictest	224834	-21	kworker/u8:2+events_unbound	23:20:12	3
16686	99	31	28,2	cyclictest	360931	-21	kworker/u8:0+flush-259:0	00:40:01	2
16683	99	31	28,2	cyclictest	4177560	-21	kworker/u8:2+flush-259:0	21:00:16	1
16683	99	31	28,2	cyclictest	209415	-21	kworker/u8:0+events_unbound	22:15:22	1
16683	99	31	27,3	cyclictest	318781	-21	kworker/u8:3+events_unbound	00:05:21	1
16690	99	30	26,3	cyclictest	303100	-21	kworker/u8:0+events_unbound	23:50:13	3
16683	99	30	27,2	cyclictest	224834	-21	kworker/u8:2+events_unbound	23:00:19	1
16683	99	30	27,2	cyclictest	2131193	-21	kworker/u8:0+events_unbound	19:45:17	1
16683	99	30	27,2	cyclictest	199353	-21	kworker/u8:1+events_unbound	22:30:13	1
16680	99	30	23,5	cyclictest	252	-21	systemd-journal	00:15:00	0
16680	99	30	22,7	cyclictest	156896	-21	kworker/u8:2+flush-259:0	22:15:00	0
16690	99	29	24,4	cyclictest	47595	-21	latency_hist	19:40:01	3
16690	99	29	23,4	cyclictest	219914	-21	/usr/sbin/munin	22:25:21	3
16686	99	29	23,4	cyclictest	168248	-21	diskstats	21:35:14	2
16683	99	29	26,2	cyclictest	4177560	-21	kworker/u8:2+events_unbound	20:40:23	1
16683	99	29	26,2	cyclictest	303100	-21	kworker/u8:0+events_unbound	23:45:26	1
16683	99	29	25,3	cyclictest	4177560	-21	kworker/u8:2+events_unbound	21:15:19	1
16690	99	28	25,2	cyclictest	156896	-21	kworker/u8:2+events_unbound	22:20:18	3
16686	99	28	25,2	cyclictest	199353	-21	kworker/u8:1+flush-259:0	22:20:21	2
16686	99	28	24,3	cyclictest	224834	-21	kworker/u8:2+events_unbound	22:50:23	2
16686	99	28	24,3	cyclictest	224834	-21	kworker/u8:2+events_unbound	22:50:22	2
16686	99	28	23,3	cyclictest	84435	-21	latency_hist	20:15:01	2
16683	99	28	26,1	cyclictest	2131193	-21	kworker/u8:0+flush-259:0	19:20:20	1
16683	99	28	25,2	cyclictest	219627	-21	kworker/u8:3+flush-259:0	23:10:20	1
16683	99	28	25,2	cyclictest	130737	-21	kworker/u8:0+flush-259:0	21:45:18	1
16680	99	28	22,4	cyclictest	252	-21	systemd-journal	19:16:23	0
16690	99	27	24,3	cyclictest	224834	-21	kworker/u8:2+events_unbound	23:05:01	3
16690	99	27	24,2	cyclictest	324592	-21	kworker/u8:1+flush-259:0	00:15:01	3
16690	99	27	23,3	cyclictest	4177560	-21	kworker/u8:2+events_unbound	20:30:02	3
16690	99	27	23,3	cyclictest	4177560	-21	kworker/u8:2+events_unbound	20:30:02	3
16683	99	27	25,1	cyclictest	224834	-21	kworker/u8:2+flush-259:0	22:55:15	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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