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 Mon Nov 10, 2025 00:44:06)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3709195	99	41	38,2	cyclictest	3828401	-21	kworker/u8:3+flush-259:0	21:30:29	2
3709195	99	40	36,3	cyclictest	3791996	-21	kworker/u8:1+flush-259:0	21:00:00	2
3709199	99	34	31,2	cyclictest	3989021	-21	kworker/u8:3+events_unbound	00:20:00	3
3709199	99	34	30,3	cyclictest	3708756	-21	kworker/u8:1+events_unbound	19:10:21	3
3709199	99	33	30,2	cyclictest	3708756	-21	kworker/u8:1+events_unbound	19:20:02	3
3709199	99	33	27,4	cyclictest	4020292	-21	latency_hist	00:10:01	3
3709195	99	33	30,2	cyclictest	3953153	-21	kworker/u8:1+events_unbound	23:05:28	2
3709186	99	33	0,31	cyclictest	1	-21	systemd	20:50:00	0
3709199	99	32	28,3	cyclictest	3729978	-21	kworker/u8:0+flush-259:0	19:40:00	3
3709199	99	32	28,2	cyclictest	3999282	-21	kworker/u8:0+flush-259:0	23:50:22	3
3709195	99	31	27,3	cyclictest	3818147	-21	kworker/u8:2+events_unbound	23:45:23	2
3709199	99	30	27,2	cyclictest	3828401	-21	kworker/u8:3+events_unbound	21:25:15	3
3709199	99	29	26,2	cyclictest	3791996	-21	kworker/u8:1+flush-259:0	20:45:23	3
3709199	99	29	26,2	cyclictest	3688913	-21	kworker/u8:4+events_unbound	20:10:17	3
3709199	99	29	24,2	cyclictest	3854127	-21	kworker/u8:0+flush-259:0	21:50:24	3
3709195	99	29	26,2	cyclictest	3989021	-21	kworker/u8:3+events_unbound	00:25:20	2
3709195	99	29	25,3	cyclictest	3854127	-21	kworker/u8:0+flush-259:0	21:40:16	2
3709195	99	28	25,2	cyclictest	3818147	-21	kworker/u8:2+flush-259:0	22:05:21	2
3709199	99	27	24,2	cyclictest	3791996	-21	kworker/u8:1+flush-259:0	21:05:01	3
3709188	99	27	23,3	cyclictest	3828401	-21	kworker/u8:3+flush-259:0	21:25:00	1
3709199	99	26	23,2	cyclictest	3828401	-21	kworker/u8:3+flush-259:0	21:15:25	3
3709199	99	26	23,2	cyclictest	3740306	-21	kworker/u8:1+events_unbound	20:00:25	3
3709199	99	26	23,2	cyclictest	3740306	-21	kworker/u8:1+events_unbound	20:00:24	3
3709199	99	26	22,3	cyclictest	3989021	-21	kworker/u8:3+flush-259:0	00:20:15	3
3709195	99	26	23,2	cyclictest	3818147	-21	kworker/u8:2+flush-259:0	00:35:00	2
3709195	99	26	23,2	cyclictest	3818147	-21	kworker/u8:2+flush-259:0	00:35:00	2
3709195	99	26	23,2	cyclictest	3818147	-21	kworker/u8:2+events_unbound	22:50:23	2
3709195	99	26	23,2	cyclictest	3740306	-21	kworker/u8:1+events_unbound	20:05:20	2
3709195	99	26	23,2	cyclictest	3688913	-21	kworker/u8:4+flush-259:0	19:50:20	2
3709188	99	26	21,4	cyclictest	4015422	-21	apt-get	00:05:14	1
3709186	99	26	21,4	cyclictest	3962404	-21	ntpq	23:10:24	0
3709195	99	25	22,2	cyclictest	3926936	-21	kworker/u8:4+flush-259:0	22:45:16	2
3709195	99	25	22,2	cyclictest	3818147	-21	kworker/u8:2+flush-259:0	22:00:25	2
3709195	99	25	22,2	cyclictest	3791996	-21	kworker/u8:1+flush-259:0	20:40:24	2
3709195	99	25	22,2	cyclictest	3724600	-21	kworker/u8:2+events_unbound	19:25:24	2
3709188	99	25	22,2	cyclictest	3002	-21	cron	23:05:00	1
3709188	99	25	18,5	cyclictest	4035716	-21	latency_hist	00:25:00	1
3709188	99	25	18,5	cyclictest	3906076	-21	latency_hist	22:20:01	1
3709188	99	25	18,5	cyclictest	3906076	-21	latency_hist	22:20:00	1
3709199	99	24	22,2	cyclictest	3791996	-21	kworker/u8:1+events_unbound	20:52:06	3
3709199	99	24	21,2	cyclictest	3978223	-21	kworker/u8:3+events_unbound	23:30:20	3
3709199	99	24	20,3	cyclictest	3818147	-21	kworker/u8:2+events_unbound	22:24:32	3
3709195	99	24	21,2	cyclictest	3947777	-21	kworker/u8:0+events_unbound	23:15:23	2
3709195	99	24	21,2	cyclictest	3750448	-21	kworker/u8:0+flush-259:0	20:20:16	2
3709195	99	24	21,2	cyclictest	3729979	-21	kworker/u8:3+events_unbound	19:30:22	2
3709195	99	24	20,3	cyclictest	3708756	-21	kworker/u8:1+events_unbound	19:11:29	2
3709188	99	24	18,4	cyclictest	2698871	-21	systemd-journal	23:10:01	1
3709188	99	24	17,5	cyclictest	3714322	-21	latency_hist	19:15:00	1
3709186	99	24	20,3	cyclictest	3818147	-21	kworker/u8:2+flush-259:0	00:15:17	0
3709186	99	24	18,4	cyclictest	2698871	-21	systemd-journal	22:35:00	0
3709199	99	23	20,2	cyclictest	3828401	-21	kworker/u8:3+flush-259:0	21:35:20	3
3709199	99	23	20,2	cyclictest	3776540	-21	kworker/u8:2+events_unbound	20:25:00	3
3709195	99	23	20,2	cyclictest	503	-21	systemd-logind	22:00:00	2
3709195	99	23	20,2	cyclictest	3968416	-21	kworker/u8:1+events_unbound	23:30:24	2
3709195	99	23	20,2	cyclictest	3818147	-21	kworker/u8:2+flush-259:0	00:05:25	2
3709195	99	23	20,2	cyclictest	3750448	-21	kworker/u8:0+flush-259:0	20:00:00	2
3709195	99	23	19,3	cyclictest	3791996	-21	kworker/u8:1+events_unbound	21:05:21	2
3709186	99	23	16,5	cyclictest	3984242	-21	diskstats	23:35:15	0
3709199	99	22	20,2	cyclictest	3854127	-21	kworker/u8:0+events_unbound	22:10:00	3
3709199	99	22	19,2	cyclictest	3989021	-21	kworker/u8:3+events_unbound	23:59:31	3
3709199	99	22	19,2	cyclictest	3828401	-21	kworker/u8:3+events_unbound	21:20:12	3
3709199	99	22	19,2	cyclictest	3740306	-21	kworker/u8:1+events_unbound	19:40:17	3
3709195	99	22	19,2	cyclictest	3947777	-21	kworker/u8:0+flush-259:0	23:20:24	2
3709195	99	22	19,2	cyclictest	3921566	-21	kworker/u8:3+events_unbound	22:35:22	2
3709195	99	22	19,2	cyclictest	3818147	-21	kworker/u8:2+flush-259:0	23:35:20	2
3709195	99	22	19,2	cyclictest	3729978	-21	kworker/u8:0+flush-259:0	19:35:28	2
3709195	99	22	19,2	cyclictest	3708756	-21	kworker/u8:1+flush-259:0	19:15:21	2
3709188	99	22	18,3	cyclictest	3688913	-21	kworker/u8:4+flush-259:0	19:50:16	1
3709188	99	22	17,3	cyclictest	4025459	-21	idleruntime-cro	00:14:59	1
3709186	99	22	7,1	cyclictest	0	-21	swapper/0	22:05:00	0
3709186	99	22	13,8	cyclictest	606	50	irq/133-enp0s29f1:rx-0	20:30:22	0
3709199	99	21	18,2	cyclictest	3989021	-21	kworker/u8:3+events_unbound	00:10:18	3
3709199	99	21	18,2	cyclictest	3937263	-21	kworker/u8:3+flush-259:0	22:55:18	3
3709199	99	21	18,2	cyclictest	3895365	-21	kworker/u8:5+flush-259:0	22:15:22	3
3709199	99	21	18,2	cyclictest	3895365	-21	kworker/u8:5+flush-259:0	22:15:21	3
3709199	99	21	16,3	cyclictest	3854127	-21	kworker/u8:0+events_unbound	21:40:19	3
3709195	99	21	18,2	cyclictest	3688913	-21	kworker/u8:4+events_unbound	19:20:17	2
3709195	99	21	16,4	cyclictest	3745237	-21	latency_hist	19:45:00	2
3709195	99	21	16,2	cyclictest	3828401	-21	kworker/u8:3+events_unbound	21:20:24	2
3709188	99	21	8,10	cyclictest	3708756	-21	kworker/u8:1+flush-259:0	19:30:00	1
3709188	99	21	17,3	cyclictest	3994384	-21	apt-get	23:45:14	1
3709188	99	21	16,4	cyclictest	3818147	-21	kworker/u8:2+flush-259:0	20:55:26	1
3709188	99	21	15,4	cyclictest	3926947	-21	/usr/sbin/munin	22:40:17	1
3709188	99	21	15,4	cyclictest	3807681	-21	apt-get	20:45:12	1
3709188	99	21	15,4	cyclictest	2698871	-21	systemd-journal	19:50:00	1
3709186	99	21	3,16	cyclictest	0	-21	swapper/0	19:10:01	0
3709199	99	20	17,2	cyclictest	3818147	-21	kworker/u8:2+events_unbound	22:30:18	3
3709199	99	20	17,2	cyclictest	3750448	-21	kworker/u8:0+flush-259:0	20:25:27	3
3709199	99	20	17,2	cyclictest	3724600	-21	kworker/u8:2+events_unbound	19:25:16	3
3709199	99	20	13,2	cyclictest	3740306	-21	kworker/u8:1+events_unbound	19:55:18	3
3709195	99	20	17,2	cyclictest	3926936	-21	kworker/u8:4+events_unbound	22:40:15	2
3709195	99	20	17,2	cyclictest	3905815	-21	kworker/u8:0+events_unbound	22:30:22	2
3709195	99	20	17,2	cyclictest	3776540	-21	kworker/u8:2+flush-259:0	20:35:22	2
3709195	99	20	17,2	cyclictest	3750448	-21	kworker/u8:0+flush-259:0	20:20:00	2
3709195	99	20	16,3	cyclictest	3791996	-21	kworker/u8:1+events_unbound	20:45:12	2
3709188	99	20	16,3	cyclictest	3818147	-21	kworker/u8:2+flush-259:0	23:40:17	1
3709188	99	20	15,4	cyclictest	3791996	-21	kworker/u8:1+flush-259:0	21:10:00	1
3709186	99	20	5,2	cyclictest	0	-21	swapper/0	00:35:00	0
3709186	99	20	5,2	cyclictest	0	-21	swapper/0	00:35:00	0
3709186	99	20	5,1	cyclictest	0	-21	swapper/0	22:10:00	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