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
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, lowest P state: ondemand
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack5slot4s.osadl.org (updated Sun Mar 15, 2026 12:44:13)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2402027	2	217	0,4	sleep3	75	-21	kworker/3:1-events	11:56:37	3
2353210	2	185	0,5	sleep3	0	-21	swapper/3	11:06:42	3
2116366	99	54	47,5	cyclictest	2415280	-21	ntpq	12:06:45	0
2116370	99	50	43,6	cyclictest	2321692	-21	kworker/u8:2+events_unbound	10:51:46	1
2116370	99	50	39,7	cyclictest	280	-21	systemd-journal	09:16:44	1
2116370	99	49	44,4	cyclictest	2361482	-21	kworker/u8:0+events_unbound	11:21:52	1
2116370	99	49	43,4	cyclictest	2207941	-21	kworker/u8:1+events_unbound	09:46:37	1
2116370	99	48	42,4	cyclictest	2353887	-21	kworker/u8:2+events_unbound	11:10:01	1
2116366	99	48	41,5	cyclictest	2445780	-21	apt-get	12:40:01	0
2116366	99	48	40,6	cyclictest	280	-21	systemd-journal	10:20:00	0
2116374	99	47	40,5	cyclictest	280	-21	systemd-journal	08:10:12	2
2116366	99	46	39,5	cyclictest	2267184	-40	mandb	09:37:45	0
2116370	99	45	41,3	cyclictest	2353887	-21	kworker/u8:2+flush-8:0	11:11:37	1
2116370	99	44	40,3	cyclictest	2376318	-21	kworker/u8:2+events_unbound	12:02:44	1
2116370	99	44	38,4	cyclictest	2147824	-21	kworker/u8:0+events_unbound	08:16:38	1
2116370	99	44	37,5	cyclictest	2307207	-21	kworker/u8:0+events_unbound	11:01:38	1
2116370	99	44	37,4	cyclictest	2139648	-21	kworker/u8:1+events_unbound	07:55:01	1
2116370	99	44	36,5	cyclictest	2192882	-21	kworker/u8:2+events_unbound	09:01:38	1
2116370	99	43	38,4	cyclictest	2123507	-21	kworker/u8:0+events_unbound	07:17:00	1
2116370	99	41	37,3	cyclictest	2396140	-21	kworker/u8:0+flush-8:0	12:21:39	1
2116370	99	41	35,4	cyclictest	1263907	-21	kworker/u8:2+events_unbound	08:10:00	1
2116370	99	41	33,6	cyclictest	1263907	-21	kworker/u8:2+events_unbound	07:21:49	1
2116370	99	41	31,4	cyclictest	2261928	-21	kworker/u8:0+events_unbound	09:36:43	1
2116370	99	40	36,3	cyclictest	2139648	-21	kworker/u8:1+events_unbound	07:46:45	1
2116370	99	40	35,4	cyclictest	2346789	-21	kworker/u8:1+events_unbound	11:35:00	1
2116370	99	40	35,4	cyclictest	2207941	-21	kworker/u8:1+flush-8:0	08:40:21	1
2116370	99	40	33,6	cyclictest	2376318	-21	kworker/u8:2+flush-8:0	11:51:50	1
2116370	99	40	28,9	cyclictest	280	-21	systemd-journal	08:24:44	1
2116370	99	39	35,3	cyclictest	2307218	-21	kworker/u8:4+flush-8:0	10:36:52	1
2116370	99	38	34,3	cyclictest	2192882	-21	kworker/u8:2+events_unbound	08:36:37	1
2116370	99	38	33,3	cyclictest	2116233	-21	kworker/u8:3+events_unbound	07:31:56	1
2116370	99	38	32,5	cyclictest	2321692	-21	kworker/u8:2+events_unbound	10:41:48	1
2116370	99	38	32,4	cyclictest	2346789	-21	kworker/u8:1+events_unbound	11:46:38	1
2116370	99	38	27,8	cyclictest	280	-21	systemd-journal	11:40:00	1
2116370	99	37	33,3	cyclictest	2430946	-21	kworker/u8:3+flush-8:0	12:31:41	1
2116370	99	37	33,3	cyclictest	2346789	-21	kworker/u8:1+events_unbound	11:41:37	1
2116370	99	37	33,3	cyclictest	2192882	-21	kworker/u8:2+flush-8:0	09:31:38	1
2116370	99	37	33,3	cyclictest	2116233	-21	kworker/u8:3+events_unbound	07:36:37	1
2116370	99	37	28,7	cyclictest	2147824	-21	kworker/u8:0+flush-8:0	08:26:50	1
2116370	99	37	28,7	cyclictest	2147824	-21	kworker/u8:0+flush-8:0	08:26:50	1
2116370	99	36	32,3	cyclictest	2346789	-21	kworker/u8:1+events_unbound	12:26:54	1
2116370	99	36	31,4	cyclictest	2147824	-21	kworker/u8:0+flush-8:0	07:56:52	1
2116370	99	36	28,6	cyclictest	2137302	-21	ntpq	07:26:48	1
2116366	99	36	28,6	cyclictest	2312553	-21	diskstats	10:26:38	0
2116370	99	35	31,3	cyclictest	2396140	-21	kworker/u8:0+flush-8:0	12:11:54	1
2116370	99	35	31,3	cyclictest	2376318	-21	kworker/u8:2+flush-8:0	11:56:52	1
2116370	99	35	31,3	cyclictest	2207941	-21	kworker/u8:1+flush-8:0	09:00:00	1
2116370	99	35	30,3	cyclictest	2222522	-21	cron	08:55:00	1
2116366	99	35	29,4	cyclictest	2261928	-21	kworker/u8:0+flush-8:0	09:56:38	0
2116370	99	34	30,3	cyclictest	2292370	-21	kworker/u8:2+flush-8:0	10:06:47	1
2116370	99	34	30,3	cyclictest	2267192	-21	kworker/u8:3+events_unbound	09:51:36	1
2116370	99	34	30,3	cyclictest	2147824	-21	kworker/u8:0+flush-8:0	07:40:21	1
2116370	99	34	29,3	cyclictest	2207941	-21	kworker/u8:1+events_unbound	10:10:46	1
2116366	99	34	27,5	cyclictest	2116623	-21	/usr/sbin/munin	07:11:53	0
2116366	99	34	27,5	cyclictest	2116623	-21	/usr/sbin/munin	07:11:53	0
2116366	99	34	22,9	cyclictest	2211851	-21	ntpq	08:41:47	0
2116370	99	33	28,3	cyclictest	2311060	-21	needreboot	10:21:47	1
2116370	99	33	28,3	cyclictest	2202313	-21	timerandwakeup	08:31:54	1
2116370	99	33	26,5	cyclictest	2321812	-21	munin-run	10:35:00	1
2116366	99	33	28,3	cyclictest	2397456	-21	irqrtprio	11:51:39	0
2116366	99	33	26,5	cyclictest	2311631	-21	grep	10:21:55	0
2116366	99	33	23,8	cyclictest	2276556	-21	ntpq	09:46:49	0
2116374	99	32	25,5	cyclictest	2346533	-21	cron	11:00:01	2
2116370	99	32	26,4	cyclictest	880	-21	mta-sts-daemon	08:05:00	1
2116370	99	32	26,4	cyclictest	2312304	-21	apt-get	10:26:34	1
2116370	99	32	20,9	cyclictest	280	-21	systemd-journal	07:10:45	1
2116370	99	32	20,9	cyclictest	280	-21	systemd-journal	07:10:45	1
2116366	99	32	22,8	cyclictest	2361482	-21	kworker/u8:0+flush-8:0	11:16:45	0
2116374	99	31	25,4	cyclictest	2311054	-21	needreboot	10:21:46	2
2116370	99	31	26,3	cyclictest	2234947	-21	kthreadcore	09:06:43	1
2116366	99	31	25,5	cyclictest	2440611	-21	kworker/u8:2+events_unbound	12:35:01	0
2116366	99	31	22,7	cyclictest	2187115	-21	ntpq	08:16:49	0
2116366	99	31	16,3	cyclictest	0	-21	swapper/0	11:31:50	0
2116374	99	30	21,7	cyclictest	2116912	-21	fschecks_count	07:11:39	2
2116374	99	30	21,7	cyclictest	2116912	-21	fschecks_count	07:11:39	2
2116370	99	30	22,6	cyclictest	2426003	-21	latency_hist	12:20:00	1
2116370	99	30	22,6	cyclictest	2147824	-21	kworker/u8:0+events_unbound	09:21:48	1
2116366	99	30	23,5	cyclictest	2167776	-21	grep	07:56:53	0
2116366	99	30	21,6	cyclictest	2361482	-21	kworker/u8:0+flush-8:0	11:25:06	0
2304705	2	29	0,3	sleep3	75	-21	kworker/3:1+events	10:16:42	3
2116374	99	29	25,2	cyclictest	2416551	-21	aten2_r5power_e	12:11:36	2
2116374	99	29	24,3	cyclictest	2336645	-21	idleruntime-cro	10:50:00	2
2116374	99	29	21,6	cyclictest	2277939	-21	fschecks_count	09:51:38	2
2116374	99	29	20,7	cyclictest	2213327	-21	fschecks_count	08:46:38	2
2116374	99	29	20,7	cyclictest	2188615	-21	fschecks_time	08:21:40	2
2116374	99	29	20,7	cyclictest	2124002	-21	fschecks_time	07:16:53	2
2116370	99	29	25,3	cyclictest	2396140	-21	kworker/u8:0+events_unbound	12:06:39	1
2116370	99	29	25,3	cyclictest	2242769	-21	kworker/u8:3+events_unbound	09:26:40	1
2116370	99	29	25,3	cyclictest	2192882	-21	kworker/u8:2+events_unbound	09:10:22	1
2116366	99	29	24,4	cyclictest	2192882	-21	kworker/u8:2+flush-8:0	09:11:54	0
2116366	99	29	23,4	cyclictest	2232421	-21	latency_hist	09:05:01	0
2116366	99	29	21,6	cyclictest	2430929	-21	latency_hist	12:25:01	0
2116366	99	29	21,6	cyclictest	2272378	-21	latency_hist	09:45:00	0
2116366	99	29	21,6	cyclictest	2272378	-21	latency_hist	09:45:00	0
2116366	99	29	1,26	cyclictest	2148557	-21	sshd	07:40:10	0
2116374	99	28	24,2	cyclictest	2232875	-21	aten2_r5power_p	09:06:36	2
2116374	99	28	23,3	cyclictest	2292717	-21	cpuspeed_turbos	10:06:37	2
2116374	99	28	22,4	cyclictest	2208345	-21	fschecks_count	08:41:38	2
2116374	99	28	20,6	cyclictest	2397051	-21	fschecks_time	11:51:36	2
2116374	99	28	18,8	cyclictest	2158893	-21	fschecks_count	07:51:38	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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