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 Fri Sep 18, 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
3219546	99	55	52,2	cyclictest	3354279	-21	kworker/u8:3+flush-259:0	21:35:24	1
3219546	99	54	51,2	cyclictest	3495483	-21	gpgv	23:35:01	1
3219544	99	54	48,4	cyclictest	3495285	-21	latency_hist	23:35:01	0
3219544	99	46	42,3	cyclictest	3230044	-21	apt-get	19:20:12	0
3219546	99	44	39,4	cyclictest	3276595	-21	apt-get	20:05:12	1
3219544	99	44	39,4	cyclictest	3235221	-21	apt-get	19:25:12	0
3219554	99	43	38,3	cyclictest	3417720	-21	apt-get	22:20:11	3
3219549	99	43	39,3	cyclictest	3219728	-21	apt-get	19:10:11	2
3219544	99	43	37,4	cyclictest	3297634	-21	cp	20:25:01	0
3219544	99	41	37,3	cyclictest	3484777	-21	store	23:25:00	0
3219554	99	40	36,3	cyclictest	3422679	-21	kworker/u8:1+flush-259:0	22:30:27	3
3219549	99	40	34,5	cyclictest	3547374	-21	latency_hist	00:25:00	2
3219549	99	39	35,3	cyclictest	3276224	-21	kworker/u8:1+flush-259:0	20:05:24	2
3219544	99	39	35,3	cyclictest	3276224	-21	kworker/u8:1+flush-259:0	20:40:25	0
3219549	99	37	33,3	cyclictest	3276224	-21	kworker/u8:1+flush-259:0	20:45:25	2
3219544	99	37	32,4	cyclictest	3412562	-21	apt-get	22:15:11	0
3219546	99	36	33,2	cyclictest	3422679	-21	kworker/u8:1+events_unbound	22:30:21	1
3219546	99	36	32,3	cyclictest	3239762	-21	kworker/u8:0+events_unbound	21:15:24	1
3219544	99	36	31,3	cyclictest	3422679	-21	kworker/u8:1+flush-259:0	22:30:23	0
3219544	99	35	31,3	cyclictest	3469099	-21	kworker/u8:1+flush-259:0	23:40:17	0
3219544	99	34	29,3	cyclictest	3402227	-21	apt-get	22:05:12	0
3219544	99	34	29,3	cyclictest	3402227	-21	apt-get	22:05:11	0
3219544	99	34	29,3	cyclictest	3239762	-21	kworker/u8:0+flush-259:0	21:05:25	0
3219554	99	33	26,5	cyclictest	3447544	-21	ntpq	22:45:21	3
3219549	99	33	29,3	cyclictest	3239762	-21	kworker/u8:0+flush-259:0	19:30:24	2
3219549	99	33	27,4	cyclictest	3562952	-21	latency_hist	00:40:01	2
3219549	99	33	27,4	cyclictest	3562952	-21	latency_hist	00:40:01	2
3219549	99	32	28,3	cyclictest	3286731	-21	kworker/u8:2+flush-259:0	21:20:19	2
3219546	99	32	27,4	cyclictest	3359842	-21	gpgv	21:25:00	1
3219544	99	32	28,3	cyclictest	3239762	-21	kworker/u8:0+flush-259:0	21:00:17	0
3219554	99	31	28,2	cyclictest	3165031	-21	kworker/u8:4+flush-259:0	19:25:25	3
3219549	99	31	27,3	cyclictest	3422896	-21	apt-get	22:25:10	2
3219546	99	31	28,2	cyclictest	3276224	-21	kworker/u8:1+events_unbound	20:15:11	1
3219546	99	31	27,3	cyclictest	3354279	-21	kworker/u8:3+flush-259:0	21:30:10	1
3219544	99	31	28,2	cyclictest	3443086	-21	kworker/u8:0+events_unbound	23:10:23	0
3219544	99	31	25,4	cyclictest	3364475	-21	ntpq	21:25:19	0
3219554	99	30	25,4	cyclictest	3296991	-21	apt-get	20:25:01	3
3219546	99	30	27,2	cyclictest	3443086	-21	kworker/u8:0+flush-259:0	23:00:18	1
3219546	99	29	25,3	cyclictest	3296997	-21	latency_hist	20:25:01	1
3219546	99	29	25,3	cyclictest	3239762	-21	kworker/u8:0+events_unbound	19:50:21	1
3219546	99	29	25,3	cyclictest	3204093	-21	kworker/u8:1+events_unbound	19:10:23	1
3219544	99	29	25,3	cyclictest	3276224	-21	kworker/u8:1+flush-259:0	20:10:24	0
3219544	99	29	25,3	cyclictest	3250733	-21	apt-get	19:40:11	0
3219544	99	29	24,3	cyclictest	3276570	-21	/usr/sbin/munin	20:05:20	0
3219554	99	28	25,2	cyclictest	3521354	-21	kworker/u8:0+flush-259:0	00:10:30	3
3219549	99	28	24,3	cyclictest	3396500	-21	kworker/u8:3+flush-259:0	23:05:24	2
3219544	99	28	24,3	cyclictest	3521354	-21	kworker/u8:0+events_unbound	00:07:53	0
3219544	99	28	24,3	cyclictest	3422679	-21	kworker/u8:1+events_unbound	22:37:46	0
3219544	99	28	21,5	cyclictest	3489266	-21	ntpq	23:25:22	0
3219554	99	27	24,2	cyclictest	3443086	-21	kworker/u8:0+events_unbound	23:10:16	3
3219554	99	27	24,2	cyclictest	3396500	-21	kworker/u8:3+flush-259:0	23:30:00	3
3219554	99	27	23,3	cyclictest	3239762	-21	kworker/u8:0+flush-259:0	19:50:23	3
3219554	99	27	21,4	cyclictest	3322318	-21	ntpq	20:45:23	3
3219549	99	27	24,2	cyclictest	3469099	-21	kworker/u8:1+events_unbound	00:15:24	2
3219549	99	27	22,3	cyclictest	3396500	-21	kworker/u8:3+events_unbound	23:15:18	2
3219546	99	27	24,2	cyclictest	3422679	-21	kworker/u8:1+flush-259:0	22:40:25	1
3219546	99	27	23,3	cyclictest	3521354	-21	kworker/u8:0+events_unbound	00:24:51	1
3219546	99	27	23,3	cyclictest	3359848	-21	kworker/u8:0+flush-259:0	21:45:24	1
3219546	99	27	22,4	cyclictest	3307949	-21	/usr/sbin/munin	20:35:20	1
3219544	99	27	23,3	cyclictest	3521354	-21	kworker/u8:0+flush-259:0	00:04:59	0
3219544	99	27	23,3	cyclictest	3469099	-21	kworker/u8:1+flush-259:0	00:25:20	0
3219544	99	27	23,3	cyclictest	3204093	-21	kworker/u8:1+events_unbound	19:10:10	0
3219549	99	26	22,3	cyclictest	3521354	-21	kworker/u8:0+flush-259:0	00:10:28	2
3219546	99	26	23,2	cyclictest	3386084	-21	kworker/u8:2+events_unbound	21:58:49	1
3219546	99	26	23,2	cyclictest	3386084	-21	kworker/u8:2+events_unbound	21:58:48	1
3219546	99	26	23,2	cyclictest	3286731	-21	kworker/u8:2+events_unbound	20:32:50	1
3219546	99	26	22,3	cyclictest	3396500	-21	kworker/u8:3+events_unbound	23:25:23	1
3219546	99	26	22,3	cyclictest	3239762	-21	kworker/u8:0+events_unbound	21:12:51	1
3219544	99	26	22,3	cyclictest	3396500	-21	kworker/u8:3+events_unbound	22:25:49	0
3219544	99	26	20,4	cyclictest	3515486	-21	ntpq	23:50:22	0
3219544	99	26	18,6	cyclictest	3536153	-21	ntpq	00:10:24	0
3219554	99	25	20,4	cyclictest	3495287	-21	apt-get	23:35:02	3
3219549	99	25	22,2	cyclictest	3276224	-21	kworker/u8:1+flush-259:0	20:15:15	2
3219549	99	25	21,3	cyclictest	3297026	-21	gpgv	20:25:00	2
3219546	99	25	22,2	cyclictest	3510921	-21	kworker/u8:3+flush-259:0	23:55:16	1
3219546	99	25	22,2	cyclictest	3443086	-21	kworker/u8:0+flush-259:0	23:05:16	1
3219546	99	25	22,2	cyclictest	3443086	-21	kworker/u8:0+events_unbound	22:56:50	1
3219546	99	25	22,2	cyclictest	3386084	-21	kworker/u8:2+events_unbound	22:02:50	1
3219546	99	25	21,3	cyclictest	3495095	-21	kworker/u8:2+events_unbound	23:44:50	1
3219544	99	25	22,2	cyclictest	3386084	-21	kworker/u8:2+events_unbound	21:55:16	0
3219544	99	25	22,2	cyclictest	3386084	-21	kworker/u8:2+events_unbound	21:55:15	0
3219544	99	25	21,3	cyclictest	3396500	-21	kworker/u8:3+flush-259:0	23:05:18	0
3219544	99	25	19,4	cyclictest	3516827	-21	diskstats	23:55:14	0
3219554	99	24	21,2	cyclictest	3245358	-21	kworker/u8:2+flush-259:0	19:45:24	3
3219554	99	24	21,2	cyclictest	3239762	-21	kworker/u8:0+flush-259:0	21:05:21	3
3219549	99	24	20,3	cyclictest	3354279	-21	kworker/u8:3+events_unbound	21:18:49	2
3219549	99	24	20,3	cyclictest	3286731	-21	kworker/u8:2+events_unbound	20:25:14	2
3219549	99	24	20,3	cyclictest	3239762	-21	kworker/u8:0+events_unbound	21:00:19	2
3219549	99	24	18,4	cyclictest	3234957	-21	latency_hist	19:25:00	2
3219546	99	24	21,2	cyclictest	3510921	-21	kworker/u8:3+events_unbound	23:49:50	1
3219546	99	24	21,2	cyclictest	3396500	-21	kworker/u8:3+events_unbound	23:20:23	1
3219546	99	24	21,2	cyclictest	3396500	-21	kworker/u8:3+events_unbound	22:15:20	1
3219546	99	24	21,2	cyclictest	3396500	-21	kworker/u8:3+events_unbound	22:07:42	1
3219546	99	24	21,2	cyclictest	3396500	-21	kworker/u8:3+events_unbound	22:07:41	1
3219546	99	24	20,3	cyclictest	3521354	-21	kworker/u8:0+flush-259:0	00:05:15	1
3219546	99	24	20,3	cyclictest	3245358	-21	kworker/u8:2+events_unbound	20:02:19	1
3219546	99	24	20,3	cyclictest	3204093	-21	kworker/u8:1+flush-259:0	19:40:24	1
3219544	99	24	21,2	cyclictest	3359848	-21	kworker/u8:0+flush-259:0	21:45:20	0
3219544	99	24	20,3	cyclictest	3396500	-21	kworker/u8:3+flush-259:0	22:45:00	0
3219544	99	24	20,3	cyclictest	3239762	-21	kworker/u8:0+events_unbound	21:15:14	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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