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 376 highest latencies:

System rackeslot4s.osadl.org (updated Tue Dec 16, 2025 12:44:06)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
60845	99	33	27,4	cyclictest	314306	-21	latency_hist	11:15:01	3
60836	99	32	26,4	cyclictest	112650	-21	latency_hist	08:00:01	0
60836	99	31	28,2	cyclictest	55005	-21	kworker/u8:1+events_unbound	07:20:23	0
60836	99	31	27,3	cyclictest	49504	-21	kworker/u8:3+flush-259:0	07:45:14	0
60836	99	31	27,3	cyclictest	309346	-21	kworker/u8:2+flush-259:0	11:10:21	0
60845	99	29	23,4	cyclictest	267816	-21	latency_hist	10:30:00	3
60836	99	29	24,3	cyclictest	169612	-21	kworker/u8:2+events_unbound	09:30:20	0
60842	99	28	24,2	cyclictest	231302	-21	kworker/u8:0+flush-259:0	09:55:17	2
60845	99	27	23,3	cyclictest	55005	-21	kworker/u8:1+flush-259:0	07:20:22	3
60845	99	27	22,3	cyclictest	252	-21	systemd-journal	09:03:47	3
60842	99	26	22,3	cyclictest	55005	-21	kworker/u8:1+flush-259:0	07:25:15	2
60842	99	26	21,4	cyclictest	81432	-21	kworker/u8:0+flush-259:0	09:05:18	2
60839	99	26	21,4	cyclictest	252	-21	systemd-journal	10:35:00	1
60845	99	25	19,4	cyclictest	251923	-21	latency_hist	10:15:00	3
60842	99	25	21,3	cyclictest	283534	-21	kworker/u8:4+flush-259:0	11:15:00	2
60836	99	25	22,2	cyclictest	309140	-21	kworker/u8:1+flush-259:0	12:20:20	0
60836	99	25	21,3	cyclictest	49504	-21	kworker/u8:3+flush-259:0	07:20:00	0
60836	99	25	21,3	cyclictest	283534	-21	kworker/u8:4+events_unbound	11:25:24	0
60842	99	24	19,3	cyclictest	340094	-21	kworker/u8:4+flush-259:0	11:40:23	2
60839	99	24	17,5	cyclictest	324608	-21	latency_hist	11:25:01	1
60836	99	24	21,2	cyclictest	128132	-21	kworker/u8:2+flush-259:0	08:30:21	0
60836	99	24	20,3	cyclictest	365876	-21	kworker/u8:0+flush-259:0	12:19:56	0
60836	99	24	20,3	cyclictest	252155	-21	kworker/u8:1+flush-259:0	10:30:18	0
60836	99	24	18,4	cyclictest	252	-21	systemd-journal	10:20:00	0
60842	99	23	17,5	cyclictest	298807	-21	latency_hist	11:00:01	2
60836	99	23	20,2	cyclictest	309140	-21	kworker/u8:1+flush-259:0	12:10:21	0
60836	99	23	18,3	cyclictest	309346	-21	kworker/u8:2+events_unbound	11:35:23	0
60845	99	22	18,3	cyclictest	169612	-21	kworker/u8:2+flush-259:0	09:35:17	3
60839	99	22	18,2	cyclictest	0	-21	swapper/1	10:45:00	1
60836	99	22	19,2	cyclictest	49504	-21	kworker/u8:3+events_unbound	07:10:23	0
60842	99	21	15,4	cyclictest	371395	-21	latency_hist	12:10:01	2
60842	99	21	11,5	cyclictest	278130	-21	idleruntime-cro	10:40:00	2
60839	99	21	15,4	cyclictest	313443	-21	ntpq	11:10:22	1
60839	99	21	14,5	cyclictest	252	-21	systemd-journal	07:49:59	1
60836	99	21	18,2	cyclictest	81432	-21	kworker/u8:0+events_unbound	09:00:24	0
60836	99	21	18,2	cyclictest	309346	-21	kworker/u8:2+events_unbound	11:15:22	0
60836	99	21	18,2	cyclictest	169612	-21	kworker/u8:2+events_unbound	10:45:21	0
60836	99	21	18,2	cyclictest	169612	-21	kworker/u8:2+events_unbound	09:45:20	0
60842	99	20	17,2	cyclictest	252	-21	systemd-journal	11:20:00	2
60842	99	20	16,3	cyclictest	236645	-21	kworker/u8:1+flush-259:0	10:10:00	2
60839	99	20	15,4	cyclictest	154194	-21	latency_hist	08:40:01	1
60836	99	20	17,3	cyclictest	236645	-21	kworker/u8:1+events_unbound	10:09:57	0
60836	99	20	17,2	cyclictest	81432	-21	kworker/u8:0+events_unbound	09:15:25	0
60836	99	20	17,2	cyclictest	509	-21	rs:main		0
60836	99	20	17,2	cyclictest	210781	-21	kworker/u8:3+events_unbound	09:50:15	0
60836	99	20	16,3	cyclictest	334931	-21	kworker/u8:3+events_unbound	11:55:17	0
60836	99	20	16,3	cyclictest	236645	-21	kworker/u8:1+flush-259:0	10:00:56	0
60845	99	19	13,4	cyclictest	90789	-21	ntpq	07:35:22	3
60845	99	19	13,4	cyclictest	365824	-21	apt-get	12:05:00	3
60845	99	19	13,4	cyclictest	138386	-21	latency_hist	08:25:01	3
60842	99	19	16,2	cyclictest	387095	-21	kworker/u8:2+events_unbound	12:25:17	2
60842	99	19	14,4	cyclictest	49504	-21	kworker/u8:3+events_unbound	08:05:22	2
60842	99	19	14,4	cyclictest	49504	-21	kworker/u8:3+events_unbound	08:05:22	2
60842	99	19	12,5	cyclictest	169579	-21	latency_hist	08:55:01	2
60839	99	19	16,2	cyclictest	340094	-21	kworker/u8:4+flush-259:0	12:20:00	1
60839	99	19	15,3	cyclictest	350682	-21	apt-get	11:50:13	1
60839	99	19	15,3	cyclictest	128375	-21	apt-get	08:15:14	1
60842	99	18	14,3	cyclictest	231302	-21	kworker/u8:0+flush-259:0	10:00:17	2
60839	99	18	15,2	cyclictest	283534	-21	kworker/u8:4+flush-259:0	11:20:00	1
60839	99	18	14,3	cyclictest	49504	-21	kworker/u8:3+flush-259:0	07:55:24	1
60839	99	18	14,3	cyclictest	334931	-21	kworker/u8:3+flush-259:0	11:35:18	1
60839	99	18	14,3	cyclictest	283569	-21	apt-get	10:45:12	1
60839	99	18	14,3	cyclictest	283534	-21	kworker/u8:4+flush-259:0	11:00:18	1
60836	99	18	15,2	cyclictest	81432	-21	kworker/u8:0+events_unbound	07:35:17	0
60836	99	18	14,3	cyclictest	603	50	irq/132-enp0s29f1:rx-0	11:00:19	0
60836	99	18	14,3	cyclictest	169612	-21	kworker/u8:2+events_unbound	08:57:56	0
60836	99	18	12,3	cyclictest	366159	2	sleep0	12:05:01	0
60836	99	18	1,16	cyclictest	1	-21	systemd	10:40:55	0
60845	99	17	14,2	cyclictest	117850	-21	kworker/u8:1+flush-259:0	08:15:25	3
60845	99	17	12,3	cyclictest	309346	-21	kworker/u8:2+flush-259:0	11:30:19	3
60842	99	17	14,2	cyclictest	309140	-21	kworker/u8:1+events_unbound	12:00:15	2
60842	99	17	14,2	cyclictest	248025	-21	kthreadcore	10:10:17	2
60842	99	17	12,3	cyclictest	49504	-21	kworker/u8:3+events_unbound	07:24:59	2
60839	99	17	14,2	cyclictest	81432	-21	kworker/u8:0+events_unbound	08:25:24	1
60839	99	17	13,3	cyclictest	309140	-21	kworker/u8:1+events_unbound	12:20:19	1
60836	99	17	14,2	cyclictest	169612	-21	kworker/u8:2+flush-259:0	10:55:24	0
60836	99	17	13,3	cyclictest	81432	-21	kworker/u8:0+flush-259:0	08:15:00	0
60836	99	17	13,3	cyclictest	507	-21	in:imuxsock	08:30:00	0
60836	99	17	13,3	cyclictest	397210	-21	kworker/u8:1+events_unbound	12:40:00	0
60836	99	17	13,3	cyclictest	387095	-21	kworker/u8:2+flush-259:0	12:34:58	0
60836	99	17	11,5	cyclictest	49504	-21	kworker/u8:3+flush-259:0	07:53:32	0
60842	99	16	1,8	cyclictest	221000	-21	munin-run	09:45:00	2
60842	99	16	1,8	cyclictest	200454	-21	apt	09:25:01	2
60842	99	16	13,2	cyclictest	81432	-21	kworker/u8:0+flush-259:0	08:15:16	2
60842	99	16	13,2	cyclictest	81432	-21	kworker/u8:0+events_unbound	08:25:18	2
60842	99	16	13,2	cyclictest	334931	-21	kworker/u8:3+flush-259:0	11:55:17	2
60842	99	16	12,3	cyclictest	81432	-21	kworker/u8:0+events_unbound	09:15:23	2
60842	99	16	12,3	cyclictest	49504	-21	kworker/u8:3+events_unbound	07:10:24	2
60842	99	16	12,3	cyclictest	309140	-21	kworker/u8:1+events_unbound	12:20:14	2
60842	99	16	12,3	cyclictest	309140	-21	kworker/u8:1+events_unbound	11:20:22	2
60842	99	16	12,2	cyclictest	0	-21	swapper/2	07:54:59	2
60839	99	16	12,3	cyclictest	365832	-21	latency_hist	12:05:01	1
60839	99	16	12,3	cyclictest	154434	-21	/usr/sbin/munin	08:40:23	1
60839	99	16	12,2	cyclictest	174716	-21	sh	09:00:00	1
60836	99	16	14,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	12:27:04	0
60836	99	16	14,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	07:41:42	0
60836	99	16	13,2	cyclictest	603	50	irq/132-enp0s29f1:rx-0	11:23:45	0
60836	99	16	13,2	cyclictest	309346	-21	kworker/u8:2+flush-259:0	11:30:24	0
60836	99	16	13,2	cyclictest	117850	-21	kworker/u8:1+flush-259:0	08:15:27	0
60836	99	16	12,3	cyclictest	365876	-21	kworker/u8:0+events_unbound	12:05:22	0
60836	99	16	11,4	cyclictest	340094	-21	kworker/u8:4+events_unbound	11:45:14	0
60845	99	15	9,4	cyclictest	294123	-21	diskstats	10:55:15	3
60845	99	15	12,2	cyclictest	252597	-21	irqcore	10:15:17	3
60842	99	15	9,2	cyclictest	365876	-21	kworker/u8:0+flush-259:0	12:30:17	2
60842	99	15	12,2	cyclictest	169612	-21	kworker/u8:2+events_unbound	09:45:23	2
60842	99	15	11,3	cyclictest	81432	-21	kworker/u8:0+events_unbound	07:35:18	2
60842	99	15	11,3	cyclictest	169612	-21	kworker/u8:2+flush-259:0	09:30:18	2
60842	99	15	11,2	cyclictest	81432	-21	kworker/u8:0+events_unbound	08:45:18	2
60839	99	15	13,1	cyclictest	248938	-21	kthreadcore	10:10:17	1
60839	99	15	11,2	cyclictest	0	-21	swapper/1	07:30:00	1
60836	99	15	13,2	cyclictest	603	50	irq/132-enp0s29f1:rx-0	10:51:11	0
60836	99	15	13,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	10:35:17	0
60836	99	15	13,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	09:35:24	0
60836	99	15	12,2	cyclictest	611	50	irq/133-enp0s29f1:tx-0	08:45:14	0
60836	99	15	12,2	cyclictest	252155	-21	kworker/u8:1+flush-259:0	10:25:21	0
60845	99	14	11,2	cyclictest	355548	-21	apt	11:55:00	3
60845	99	14	11,2	cyclictest	324605	-21	sh	11:25:00	3
60845	99	14	11,2	cyclictest	292800	-21	ntp_kernel_pll_	10:50:23	3
60845	99	14	11,2	cyclictest	278145	-21	sh	10:40:00	3
60845	99	14	11,2	cyclictest	169612	-21	kworker/u8:2+flush-259:0	09:22:26	3
60845	99	14	10,3	cyclictest	283534	-21	kworker/u8:4+flush-259:0	11:25:27	3
60842	99	14	11,2	cyclictest	49504	-21	kworker/u8:3+events_unbound	07:40:24	2
60842	99	14	11,2	cyclictest	333036	-21	kthreadcore	11:30:19	2
60842	99	14	10,3	cyclictest	81432	-21	kworker/u8:0+events_unbound	08:20:25	2
60842	99	14	10,3	cyclictest	324996	-21	cpuspeed_turbos	11:25:15	2
60842	99	14	10,3	cyclictest	169612	-21	kworker/u8:2+events_unbound	09:35:13	2
60842	99	14	10,3	cyclictest	128132	-21	kworker/u8:2+flush-259:0	08:35:21	2
60839	99	14	8,4	cyclictest	509	-21	rs:main		1
60839	99	14	11,2	cyclictest	340094	-21	kworker/u8:4+flush-259:0	12:15:00	1
60839	99	14	10,3	cyclictest	231302	-21	kworker/u8:0+events_unbound	10:25:02	1
60836	99	14	7,4	cyclictest	164899	-21	diskstats	08:50:14	0
60836	99	14	6,5	cyclictest	199599	-21	ntpq	09:20:23	0
60836	99	14	13,1	cyclictest	611	50	irq/133-enp0s29f1:tx-0	10:20:24	0
60836	99	14	12,2	cyclictest	603	50	irq/132-enp0s29f1:rx-0	07:31:40	0
60836	99	14	12,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	11:44:57	0
60836	99	14	12,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	11:05:33	0
60836	99	14	12,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	09:10:22	0
60836	99	14	12,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	08:40:19	0
60836	99	14	12,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	07:25:24	0
60836	99	14	11,2	cyclictest	611	50	irq/133-enp0s29f1:tx-0	08:00:15	0
60836	99	14	11,2	cyclictest	603	50	irq/132-enp0s29f1:rx-0	09:05:21	0
60836	99	14	11,2	cyclictest	0	-21	swapper/0	08:24:59	0
60836	99	14	10,3	cyclictest	195330	-21	kworker/u8:1+events_unbound	09:40:23	0
60845	99	13	9,3	cyclictest	55005	-21	kworker/u8:1+flush-259:0	07:29:29	3
60845	99	13	9,3	cyclictest	55005	-21	kworker/u8:1+flush-259:0	07:15:00	3
60845	99	13	9,3	cyclictest	252155	-21	kworker/u8:1+flush-259:0	10:35:00	3
60845	99	13	9,3	cyclictest	169612	-21	kworker/u8:2+flush-259:0	08:55:31	3
60845	99	13	8,3	cyclictest	252	-21	systemd-journal	09:46:55	3
60845	99	13	11,1	cyclictest	0	-21	swapper/3	11:50:00	3
60845	99	13	11,1	cyclictest	0	-21	swapper/3	10:20:20	3
60845	99	13	10,2	cyclictest	339061	-21	needreboot	11:35:21	3
60845	99	13	10,2	cyclictest	227440	-21	kthreadcore	09:50:17	3
60845	99	13	10,2	cyclictest	118489	-21	irqcore	08:05:17	3
60845	99	13	10,2	cyclictest	118489	-21	irqcore	08:05:16	3
60842	99	13	9,3	cyclictest	298836	-21	kworker/u8:0+flush-259:0	11:05:20	2
60842	99	13	9,3	cyclictest	210781	-21	kworker/u8:3+flush-259:0	09:50:16	2
60842	99	13	10,3	cyclictest	334931	-21	kworker/u8:3+events_unbound	11:55:00	2
60842	99	13	10,2	cyclictest	49504	-21	kworker/u8:3+flush-259:0	07:15:18	2
60842	99	13	10,2	cyclictest	231302	-21	kworker/u8:0+flush-259:0	10:20:15	2
60842	99	13	10,2	cyclictest	169612	-21	kworker/u8:2+events_unbound	09:25:25	2
60836	99	13	12,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	10:12:46	0
60836	99	13	11,2	cyclictest	603	50	irq/132-enp0s29f1:rx-0	09:25:54	0
60836	99	13	11,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	11:50:27	0
60845	99	12	9,2	cyclictest	282443	-21	ntp_kernel_pll_	10:40:22	3
60845	99	12	8,3	cyclictest	49504	-21	kworker/u8:3+flush-259:0	07:50:25	3
60845	99	12	8,3	cyclictest	309140	-21	kworker/u8:1+flush-259:0	12:08:26	3
60845	99	12	8,3	cyclictest	195330	-21	kworker/u8:1+flush-259:0	09:30:26	3
60845	99	12	8,3	cyclictest	195330	-21	kworker/u8:1+flush-259:0	09:30:00	3
60845	99	12	6,4	cyclictest	252	-21	systemd-journal	08:30:00	3
60845	99	12	6,4	cyclictest	149294	-21	/usr/sbin/munin	08:35:15	3
60842	99	12	9,2	cyclictest	376527	-21	idleruntime-cro	12:14:59	2
60842	99	12	9,2	cyclictest	170875	-21	kthreadcore	08:55:17	2
60842	99	12	9,2	cyclictest	107839	-21	cpuspeed_turbos	07:55:14	2
60842	99	12	8,3	cyclictest	55005	-21	kworker/u8:1+events_unbound	07:30:17	2
60842	99	12	8,3	cyclictest	49504	-21	kworker/u8:3+events_unbound	07:45:20	2
60839	99	12	9,2	cyclictest	107032	-21	unixbench_multi	07:50:25	1
60839	99	12	9,2	cyclictest	0	-21	swapper/1	10:40:00	1
60839	99	12	8,3	cyclictest	350402	-21	cron	11:50:00	1
60839	99	12	10,1	cyclictest	0	-21	swapper/1	08:14:59	1
60836	99	12	9,2	cyclictest	603	50	irq/132-enp0s29f1:rx-0	08:35:12	0
60845	99	11	9,1	cyclictest	0	-21	swapper/3	08:30:25	3
60845	99	11	8,2	cyclictest	387207	-21	cpuspeed_turbos	12:25:14	3
60845	99	11	6,3	cyclictest	513	-21	gdbus	10:05:00	3
60845	99	11	6,3	cyclictest	102316	-21	sh	07:50:00	3
60845	99	11	5,4	cyclictest	181683	-21	cut	09:05:19	3
60842	99	11	9,1	cyclictest	169612	-21	kworker/u8:2+events_unbound	09:10:14	2
60842	99	11	8,2	cyclictest	252155	-21	kworker/u8:1+flush-259:0	10:30:19	2
60842	99	11	7,3	cyclictest	402259	-21	sshd	12:39:29	2
60842	99	11	7,3	cyclictest	169612	-21	kworker/u8:2+flush-259:0	09:00:25	2
60839	99	11	9,1	cyclictest	211	-21	jbd2/nvme0n1p2-8	09:45:00	1
60839	99	11	8,2	cyclictest	507	-21	in:imuxsock	07:35:00	1
60839	99	11	8,2	cyclictest	122524	-21	unixbench_singl	08:05:25	1
60839	99	11	8,2	cyclictest	122524	-21	unixbench_singl	08:05:25	1
60839	99	11	8,2	cyclictest	0	-21	swapper/1	10:25:01	1
60839	99	11	6,4	cyclictest	252	-21	systemd-journal	09:50:55	1
60845	99	10	7,2	cyclictest	314633	-21	cpuspeed_turbos	11:15:14	3
60845	99	10	7,1	cyclictest	0	-21	swapper/3	12:10:26	3
60845	99	10	6,3	cyclictest	49	1	ktimers/3	09:55:22	3
60845	99	10	5,3	cyclictest	190150	-21	sshd	09:14:55	3
60842	99	10	7,2	cyclictest	231302	-21	kworker/u8:0+events_unbound	10:40:21	2
60842	99	10	0,3	cyclictest	288487	-21	latency_hist	10:50:01	2
60842	99	10	0,2	cyclictest	293700	-21	latency_hist	10:55:00	2
60839	99	10	8,1	cyclictest	0	-21	swapper/1	12:35:13	1
60839	99	10	8,1	cyclictest	0	-21	swapper/1	10:00:15	1
60839	99	10	7,2	cyclictest	256631	-21	unixbench_multi	10:15:26	1
60839	99	10	6,3	cyclictest	81432	-21	kworker/u8:0+flush-259:0	08:00:17	1
60839	99	10	5,3	cyclictest	190170	-21	basename	09:15:01	1
60839	99	10	0,2	cyclictest	360692	-21	latency_hist	12:00:01	1
60845	99	9	7,1	cyclictest	165758	-21	kthreadcore	08:50:18	3
60839	99	9	7,1	cyclictest	0	-21	swapper/1	09:15:13	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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