OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, 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
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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, lowest P state: ondemand
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack5slot4s.osadl.org (updated Mon Jun 15, 2026 00:44:14)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2251517	2	199	0,2	sleep3	47	1	rcuc/3	19:55:36	3
2373133	2	197	0,5	sleep3	47	1	rcuc/3	22:00:27	3
2202146	99	85	75,7	cyclictest	2170309	-21	kworker/u8:3+flush-8:0	19:25:44	1
2202141	99	84	79,3	cyclictest	2288071	-21	kworker/u8:2+events_unbound	21:00:01	0
2202146	99	80	73,5	cyclictest	2170309	-21	kworker/u8:3+events_unbound	20:00:43	1
2313887	2	79	0,4	sleep3	48	1	ktimers/3	21:00:33	3
2202146	99	74	65,6	cyclictest	1353594	-21	kworker/u8:0+flush-8:0	20:25:42	1
2202146	99	73	63,7	cyclictest	2262572	-21	ntpq	20:05:39	1
2202146	99	71	63,6	cyclictest	2502146	-21	kworker/u8:1+flush-8:0	00:10:46	1
2202141	99	71	64,6	cyclictest	2390865	-21	kworker/u8:3+events_unbound	23:40:44	0
2202146	99	70	64,4	cyclictest	2201995	-21	kworker/u8:1+events_unbound	20:55:45	1
2202146	99	70	64,4	cyclictest	2170309	-21	kworker/u8:3+flush-8:0	20:10:47	1
2202146	99	70	63,5	cyclictest	2332476	-21	kworker/u8:1+events_unbound	21:40:45	1
2202146	99	69	61,6	cyclictest	2288071	-21	kworker/u8:2+events_unbound	21:50:46	1
2202146	99	68	61,5	cyclictest	2288071	-21	kworker/u8:2+flush-8:0	22:00:45	1
2202146	99	68	61,5	cyclictest	1353594	-21	kworker/u8:0+events_unbound	21:00:34	1
2202141	99	68	61,5	cyclictest	2170309	-21	kworker/u8:3+events_unbound	19:30:26	0
2202141	99	66	55,8	cyclictest	2531207	-21	ntpq	00:35:37	0
2202146	99	64	59,3	cyclictest	2367353	-21	kworker/u8:0+events_unbound	22:15:45	1
2202146	99	63	58,4	cyclictest	2288071	-21	kworker/u8:2+flush-8:0	20:45:43	1
2202146	99	62	53,7	cyclictest	2223963	-21	/usr/sbin/munin	19:30:35	1
2202141	99	62	51,9	cyclictest	2426568	-21	ntpq	22:50:38	0
2202146	99	61	50,8	cyclictest	2481450	-21	ntpq	23:45:38	1
2202141	99	61	49,9	cyclictest	2348143	-21	diskstats	21:35:28	0
2457162	2	60	0,1	chrt	47	1	rcuc/3	23:20:46	3
2202146	99	60	54,4	cyclictest	2492746	-21	kworker/u8:4+events_unbound	00:05:43	1
2202146	99	60	53,5	cyclictest	2412334	-21	kworker/u8:2+flush-8:0	22:55:43	1
2202146	99	60	51,7	cyclictest	2403018	-21	/usr/sbin/munin	22:30:43	1
2202146	99	60	51,7	cyclictest	2403018	-21	/usr/sbin/munin	22:30:43	1
2202146	99	59	52,5	cyclictest	2170309	-21	kworker/u8:3+events_unbound	19:20:28	1
2202146	99	59	51,5	cyclictest	2201995	-21	kworker/u8:1+events_unbound	19:35:29	1
2202141	99	59	51,6	cyclictest	1353594	-21	kworker/u8:0+events_unbound	21:00:43	0
2202146	99	58	52,4	cyclictest	2412334	-21	kworker/u8:2+flush-8:0	00:00:31	1
2202146	99	57	51,4	cyclictest	2170309	-21	kworker/u8:3+flush-8:0	19:10:42	1
2202146	99	57	50,5	cyclictest	2502146	-21	kworker/u8:1+events_unbound	00:35:42	1
2202146	99	57	49,6	cyclictest	2201995	-21	kworker/u8:1+flush-8:0	19:15:45	1
2202146	99	57	48,6	cyclictest	1353594	-21	kworker/u8:0+events_unbound	20:15:38	1
2202141	99	57	48,7	cyclictest	2253845	-21	/usr/sbin/munin	20:00:37	0
2202146	99	56	50,4	cyclictest	2407216	-21	kworker/u8:0+events_unbound	22:45:28	1
2202146	99	56	50,4	cyclictest	2288071	-21	kworker/u8:2+flush-8:0	21:05:30	1
2202146	99	56	50,4	cyclictest	2170309	-21	kworker/u8:3+flush-8:0	19:50:31	1
2202146	99	56	48,6	cyclictest	2516493	-21	ntpq	00:20:41	1
2202141	99	56	46,8	cyclictest	2501573	-21	ntpq	00:05:41	0
2202146	99	55	51,3	cyclictest	2526345	-21	kworker/u8:3+events_unbound	00:30:45	1
2202146	99	55	51,3	cyclictest	2332476	-21	kworker/u8:1+flush-8:0	22:05:29	1
2202146	99	55	51,3	cyclictest	2288071	-21	kworker/u8:2+flush-8:0	22:10:31	1
2202146	99	54	48,4	cyclictest	2502146	-21	kworker/u8:1+flush-8:0	00:15:30	1
2202146	99	54	47,6	cyclictest	2481521	-21	kworker/u8:0+flush-8:0	23:55:39	1
2202146	99	54	47,5	cyclictest	2390865	-21	kworker/u8:3+events_unbound	22:50:42	1
2202146	99	54	46,6	cyclictest	2441708	-21	ntpq	23:05:37	1
2202146	99	54	46,6	cyclictest	2288071	-21	kworker/u8:2+flush-8:0	21:25:42	1
2202141	99	54	46,6	cyclictest	2407961	-21	apt-get	22:35:27	0
2202141	99	54	46,6	cyclictest	2407961	-21	apt-get	22:35:26	0
2202141	99	54	45,7	cyclictest	2496613	-21	ntpq	00:00:39	0
2202141	99	53	42,8	cyclictest	2247750	-21	ntpq	19:50:40	0
2202147	99	52	49,2	cyclictest	2332476	-21	kworker/u8:1+events_unbound	21:40:28	2
2202146	99	52	46,4	cyclictest	2170309	-21	kworker/u8:3+events_unbound	20:30:28	1
2202146	99	52	42,8	cyclictest	2307141	-21	ntpq	20:50:36	1
2202146	99	51	46,3	cyclictest	2407216	-21	kworker/u8:0+events_unbound	22:40:27	1
2202146	99	51	43,6	cyclictest	2482631	-21	/usr/sbin/munin	23:50:38	1
2202146	99	51	42,7	cyclictest	2352635	-21	gpgv	21:40:00	1
2202141	99	51	42,6	cyclictest	2327836	-21	latency_hist	21:15:01	0
2202146	99	50	45,4	cyclictest	1353594	-21	kworker/u8:0+events_unbound	19:40:44	1
2202146	99	50	45,4	cyclictest	1353594	-21	kworker/u8:0+events_unbound	19:40:44	1
2202141	99	50	42,6	cyclictest	2292343	-21	ntpq	20:35:40	0
2202141	99	50	40,8	cyclictest	2366763	-21	ntpq	21:50:39	0
2202141	99	50	39,8	cyclictest	2526259	-21	ntpq	00:30:39	0
2202146	99	49	44,4	cyclictest	2288071	-21	kworker/u8:2+flush-8:0	20:40:46	1
2202146	99	49	44,3	cyclictest	2412334	-21	kworker/u8:2+flush-8:0	00:25:37	1
2202146	99	49	43,4	cyclictest	2397224	-21	kworker/u8:1+events_unbound	22:25:00	1
2202146	99	49	40,6	cyclictest	2412334	-21	kworker/u8:2+events_unbound	23:00:40	1
2202146	99	49	39,7	cyclictest	2312678	-21	kworker/u8:3+flush-8:0	21:10:41	1
2202146	99	48	45,2	cyclictest	2390865	-21	kworker/u8:3+flush-8:0	23:40:44	1
2202146	99	48	44,3	cyclictest	2288071	-21	kworker/u8:2+events_unbound	22:25:40	1
2202146	99	48	42,5	cyclictest	2412334	-21	kworker/u8:2+flush-8:0	23:30:42	1
2202146	99	48	42,4	cyclictest	1353594	-21	kworker/u8:0+events_unbound	19:55:33	1
2202146	99	48	40,6	cyclictest	2412334	-21	kworker/u8:2+events_unbound	23:35:43	1
2202146	99	48	40,6	cyclictest	2332476	-21	kworker/u8:1+events_unbound	21:30:34	1
2202141	99	48	38,7	cyclictest	2401890	-21	ntpq	22:25:39	0
2202146	99	46	39,5	cyclictest	2390865	-21	kworker/u8:3+flush-8:0	22:35:42	1
2202146	99	46	39,5	cyclictest	2390865	-21	kworker/u8:3+flush-8:0	22:35:41	1
2202146	99	46	36,8	cyclictest	2371775	-21	ntpq	21:55:41	1
2202141	99	46	41,3	cyclictest	2436735	-21	ntpq	23:00:38	0
2202147	99	45	39,4	cyclictest	2447683	-21	cp	23:15:00	2
2202147	99	45	38,5	cyclictest	2353041	-21	cp	21:40:01	2
2202147	99	45	36,7	cyclictest	2492251	-21	apt-get	00:00:01	2
2202146	99	44	37,5	cyclictest	2412334	-21	kworker/u8:2+flush-8:0	23:20:45	1
2202146	99	44	36,6	cyclictest	2331930	-21	ntpq	21:15:40	1
2202146	99	43	35,6	cyclictest	2412334	-21	kworker/u8:2+flush-8:0	23:25:39	1
2202146	99	42	37,4	cyclictest	2412334	-21	kworker/u8:2+flush-8:0	23:15:34	1
2202146	99	42	35,5	cyclictest	2333091	-21	apt-get	21:20:25	1
2202146	99	42	34,6	cyclictest	2170309	-21	kworker/u8:3+flush-8:0	20:20:35	1
2202141	99	42	33,7	cyclictest	2461760	-21	ntpq	23:25:40	0
2202141	99	41	33,6	cyclictest	2447586	-21	latency_hist	23:15:01	0
2202146	99	40	35,4	cyclictest	2412334	-21	kworker/u8:2+events_unbound	23:10:43	1
2202141	99	40	34,4	cyclictest	2170309	-21	kworker/u8:3+flush-8:0	19:10:31	0
2202141	99	39	32,5	cyclictest	2233822	-21	latency_hist	19:40:00	0
2202146	99	37	32,3	cyclictest	2201995	-21	kworker/u8:1+events_unbound	20:35:26	1
2202141	99	37	32,3	cyclictest	2332789	-21	idleruntime-cro	21:20:00	0
2202147	99	36	12,14	cyclictest	2378650	-21	sed	22:05:32	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2019-05-28 - 00:17