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 Mar 08, 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
3635004	99	43	37,4	cyclictest	3670969	-21	latency_hist	19:45:00	0
3635004	99	37	31,4	cyclictest	3739202	-21	latency_hist	20:50:01	0
3635014	99	36	30,4	cyclictest	3676132	-21	latency_hist	19:50:00	3
3635004	99	36	0,34	cyclictest	1	-21	systemd	23:19:59	0
3635004	99	35	30,4	cyclictest	3811379	-21	latency_hist	22:00:00	0
3635014	99	34	30,3	cyclictest	3822548	-21	kworker/u8:2+events_unbound	22:15:12	3
3635014	99	33	24,6	cyclictest	3953071	-21	latency_hist	00:15:00	3
3635004	99	33	30,2	cyclictest	3722942	-21	gpgv	20:35:01	0
3635014	99	32	29,2	cyclictest	3906257	-21	kworker/u8:1+events_unbound	23:50:24	3
3635014	99	32	26,4	cyclictest	3922075	-21	latency_hist	23:45:01	3
3635006	99	32	26,4	cyclictest	3912045	-21	/usr/sbin/munin	23:35:17	1
3635014	99	31	28,2	cyclictest	3885246	-21	kworker/u8:2+events_unbound	23:10:19	3
3635014	99	31	28,2	cyclictest	3692219	-21	kworker/u8:2+events_unbound	20:05:23	3
3635004	99	31	27,3	cyclictest	3895959	-21	kworker/u8:3+flush-259:0	23:40:00	0
3635014	99	30	27,2	cyclictest	3833555	-21	kworker/u8:1+events_unbound	23:05:12	3
3635014	99	30	27,2	cyclictest	3754682	-21	kworker/u8:1+events_unbound	21:10:22	3
3635009	99	30	24,4	cyclictest	3838036	-21	latency_hist	22:25:01	2
3635014	99	29	26,2	cyclictest	3833555	-21	kworker/u8:1+events_unbound	22:35:24	3
3635014	99	29	26,2	cyclictest	3760034	-21	kworker/u8:2+events_unbound	21:35:11	3
3635009	99	29	23,4	cyclictest	3848806	-21	kworker/u8:3+flush-259:0	22:50:01	2
3635004	99	29	22,5	cyclictest	3822531	-21	latency_hist	22:10:00	0
3635014	99	28	25,2	cyclictest	3822548	-21	kworker/u8:2+flush-259:0	22:10:20	3
3635014	99	28	25,2	cyclictest	3734086	-21	kworker/u8:2+events_unbound	20:50:24	3
3635014	99	28	21,3	cyclictest	3822548	-21	kworker/u8:2+events_unbound	22:30:18	3
3635014	99	27	24,2	cyclictest	3895959	-21	kworker/u8:3+events_unbound	23:35:24	3
3635014	99	27	24,2	cyclictest	3833555	-21	kworker/u8:1+events_unbound	22:20:23	3
3635014	99	27	24,2	cyclictest	3790751	-21	kworker/u8:0+events_unbound	22:00:15	3
3635014	99	27	23,3	cyclictest	3660924	-21	kworker/u8:1+events_unbound	19:50:24	3
3635014	99	27	21,4	cyclictest	3958186	-21	latency_hist	00:20:01	3
3635009	99	27	21,4	cyclictest	3697125	-21	latency_hist	20:10:01	2
3635009	99	27	21,4	cyclictest	3634928	-21	latency_hist	19:10:01	2
3635006	99	27	23,3	cyclictest	1583387	-21	kworker/u8:0+flush-259:0	19:10:15	1
3635014	99	26	23,2	cyclictest	3932415	-21	kworker/u8:3+events_unbound	23:55:25	3
3635009	99	26	22,3	cyclictest	1583387	-21	kworker/u8:0+flush-259:0	20:10:21	2
3635009	99	26	21,3	cyclictest	3806239	-21	kworker/u8:3+flush-259:0	21:55:18	2
3635006	99	26	22,2	cyclictest	3932666	-21	apt-get	23:55:12	1
3635006	99	26	20,4	cyclictest	3870018	-21	/usr/sbin/munin	22:55:14	1
3635004	99	26	22,3	cyclictest	3916931	-21	kworker/u8:0+events_unbound	00:25:00	0
3635014	99	25	22,2	cyclictest	3916931	-21	kworker/u8:0+flush-259:0	00:20:23	3
3635014	99	25	21,3	cyclictest	3780451	-21	kworker/u8:1+flush-259:0	21:58:12	3
3635014	99	25	19,2	cyclictest	3833555	-21	kworker/u8:1+events_unbound	22:25:13	3
3635009	99	25	21,3	cyclictest	3906257	-21	kworker/u8:1+events_unbound	23:55:01	2
3635009	99	25	18,5	cyclictest	3865047	-21	diskstats	22:50:13	2
3635006	99	25	21,3	cyclictest	1583387	-21	kworker/u8:0+flush-259:0	19:50:00	1
3635004	99	25	21,2	cyclictest	3723607	-21	apt-get	20:35:12	0
3635014	99	24	21,2	cyclictest	3806239	-21	kworker/u8:3+events_unbound	22:05:03	3
3635014	99	24	21,2	cyclictest	3581992	-21	kworker/u8:1+events_unbound	19:16:01	3
3635014	99	24	20,3	cyclictest	3895959	-21	kworker/u8:3+events_unbound	23:25:23	3
3635006	99	24	19,3	cyclictest	252	-21	systemd-journal	22:39:11	1
3635004	99	24	19,3	cyclictest	3812073	-21	apt-get	22:00:14	0
3635014	99	23	20,2	cyclictest	3848806	-21	kworker/u8:3+flush-259:0	23:00:20	3
3635014	99	23	20,2	cyclictest	3833555	-21	kworker/u8:1+flush-259:0	22:55:21	3
3635014	99	23	20,2	cyclictest	1583387	-21	kworker/u8:0+events_unbound	19:35:23	3
3635009	99	23	20,2	cyclictest	3833555	-21	kworker/u8:1+flush-259:0	22:55:23	2
3635009	99	23	18,3	cyclictest	3760034	-21	kworker/u8:2+flush-259:0	21:50:00	2
3635009	99	23	18,3	cyclictest	3760034	-21	kworker/u8:2+flush-259:0	21:50:00	2
3635009	99	23	18,3	cyclictest	3707685	-21	kworker/u8:1+events_unbound	20:20:18	2
3635006	99	23	19,3	cyclictest	1583387	-21	kworker/u8:0+flush-259:0	19:40:25	1
3635006	99	23	17,4	cyclictest	3754643	-21	latency_hist	21:05:00	1
3635004	99	23	1,21	cyclictest	3785615	-21	unin-run	21:35:00	0
3635014	99	22	19,2	cyclictest	1583387	-21	kworker/u8:0+flush-259:0	20:42:36	3
3635014	99	22	18,3	cyclictest	3848806	-21	kworker/u8:3+events_unbound	22:50:03	3
3635014	99	22	18,3	cyclictest	3644977	-21	kworker/u8:3+events_unbound	19:24:03	3
3635009	99	22	19,2	cyclictest	3822548	-21	kworker/u8:2+flush-259:0	22:10:15	2
3635009	99	22	18,3	cyclictest	3885246	-21	kworker/u8:2+events_unbound	23:45:19	2
3635006	99	22	16,4	cyclictest	252	-21	systemd-journal	19:30:02	1
3635004	99	22	18,3	cyclictest	3885337	-21	gpgv	23:10:01	0
3635004	99	22	17,3	cyclictest	3968565	-21	latency_hist	00:30:01	0
3635004	99	22	1,19	cyclictest	3681315	-21	munin-run	19:55:01	0
3635014	99	21	18,2	cyclictest	3947912	-21	turbostat.cron	00:10:01	3
3635014	99	21	18,2	cyclictest	3848806	-21	kworker/u8:3+events_unbound	22:45:14	3
3635014	99	21	17,3	cyclictest	3780451	-21	kworker/u8:1+events_unbound	21:32:12	3
3635014	99	21	17,3	cyclictest	0	-21	swapper/3	20:30:00	3
3635009	99	21	17,3	cyclictest	3895959	-21	kworker/u8:3+events_unbound	23:20:17	2
3635006	99	21	18,2	cyclictest	3760034	-21	kworker/u8:2+flush-259:0	21:25:25	1
3635006	99	21	15,4	cyclictest	3744335	-21	latency_hist	20:55:00	1
3635004	99	21	1,18	cyclictest	509	-21	rs:main		0
3635014	99	20	17,2	cyclictest	3760034	-21	kworker/u8:2+events_unbound	21:20:23	3
3635014	99	20	17,2	cyclictest	3717771	-21	kworker/u8:3+events_unbound	20:35:23	3
3635009	99	20	17,2	cyclictest	3760034	-21	kworker/u8:2+events_unbound	21:25:13	2
3635009	99	20	16,3	cyclictest	3717771	-21	kworker/u8:3+events_unbound	20:35:25	2
3635009	99	20	14,4	cyclictest	3843621	-21	latency_hist	22:30:01	2
3635004	99	20	16,3	cyclictest	3760034	-21	kworker/u8:2+events_unbound	21:20:00	0
3635014	99	19	13,4	cyclictest	3922312	-21	/usr/sbin/munin	23:45:12	3
3635009	99	19	15,3	cyclictest	3790751	-21	kworker/u8:0+flush-259:0	21:40:25	2
3635009	99	19	15,3	cyclictest	3790751	-21	kworker/u8:0+flush-259:0	21:40:24	2
3635006	99	19	16,2	cyclictest	3841028	-21	kthreadcore	22:25:17	1
3635006	99	19	15,3	cyclictest	3822548	-21	kworker/u8:2+flush-259:0	22:45:01	1
3635004	99	19	15,3	cyclictest	3885246	-21	kworker/u8:2+flush-259:0	23:10:16	0
3635004	99	19	15,3	cyclictest	3822548	-21	kworker/u8:2+flush-259:0	22:15:25	0
3635004	99	19	14,3	cyclictest	252	-21	systemd-journal	23:05:00	0
3635004	99	19	12,5	cyclictest	252	-21	systemd-journal	19:58:07	0
3635014	99	18	16,1	cyclictest	1583387	-21	kworker/u8:0+events_unbound	19:55:22	3
3635014	99	18	15,2	cyclictest	3916931	-21	kworker/u8:0+events_unbound	00:34:42	3
3635014	99	18	15,2	cyclictest	3906257	-21	kworker/u8:1+flush-259:0	23:30:26	3
3635009	99	18	15,2	cyclictest	3660924	-21	kworker/u8:1+events_unbound	20:00:24	2
3635009	99	18	14,3	cyclictest	3932415	-21	kworker/u8:3+events_unbound	23:55:16	2
3635009	99	18	14,3	cyclictest	3833555	-21	kworker/u8:1+flush-259:0	22:37:57	2
3635009	99	18	14,3	cyclictest	3581992	-21	kworker/u8:1+events_unbound	19:15:23	2
3635009	99	18	12,4	cyclictest	3640116	-21	latency_hist	19:15:00	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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