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 Wed Sep 02, 2026 12:44:05)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1998825	99	40	33,5	cyclictest	2207796	-21	cat	10:30:00	3
1998817	99	38	34,3	cyclictest	2300832	-21	kworker/u8:1+events_unbound	12:00:24	1
1998817	99	35	30,3	cyclictest	2123900	-21	cat	09:10:01	1
1998817	99	33	29,3	cyclictest	2264663	-21	apt-get	11:25:12	1
1998820	99	31	27,3	cyclictest	2034577	-21	kworker/u8:3+flush-259:0	07:55:11	2
1998825	99	30	27,2	cyclictest	2243300	-21	kworker/u8:3+flush-259:0	11:20:25	3
1998825	99	29	23,4	cyclictest	335557	-21	systemd-journal	09:24:59	3
1998820	99	29	23,4	cyclictest	2331677	-21	latency_hist	12:30:00	2
1998820	99	29	23,4	cyclictest	2331677	-21	latency_hist	12:30:00	2
1998820	99	29	23,4	cyclictest	2175253	-21	ntpq	09:55:23	2
1998817	99	29	26,2	cyclictest	1988759	-21	kworker/u8:2+flush-259:0	07:20:24	1
1998825	99	28	23,3	cyclictest	2150371	-21	latency_hist	09:35:00	3
1998820	99	28	24,3	cyclictest	2285087	-21	kworker/u8:3+flush-259:0	12:15:27	2
1998817	99	28	25,2	cyclictest	2034577	-21	kworker/u8:3+flush-259:0	08:00:15	1
1998825	99	27	24,2	cyclictest	1988759	-21	kworker/u8:2+flush-259:0	07:30:25	3
1998820	99	27	22,4	cyclictest	1998780	-21	kworker/u8:1+flush-259:0	07:15:12	2
1998825	99	26	22,3	cyclictest	2108390	-21	kworker/u8:2+flush-259:0	09:10:24	3
1998817	99	26	23,2	cyclictest	2249149	-21	apt-get	11:10:12	1
1998817	99	26	22,3	cyclictest	2331945	-21	apt-get	12:30:12	1
1998825	99	25	22,2	cyclictest	2191678	-21	kworker/u8:2+events_unbound	10:40:24	3
1998817	99	25	21,3	cyclictest	2081632	-21	/usr/sbin/munin	08:30:21	1
1998825	99	23	20,2	cyclictest	2008726	-21	kworker/u8:0+flush-259:0	07:45:00	3
1998820	99	23	20,2	cyclictest	2285087	-21	kworker/u8:3+flush-259:0	12:00:00	2
1998817	99	23	21,1	cyclictest	1998780	-21	kworker/u8:1+events_unbound	07:15:11	1
1998825	99	22	19,2	cyclictest	2316111	-21	kworker/u8:2+flush-259:0	12:20:15	3
1998820	99	22	18,3	cyclictest	2008726	-21	kworker/u8:0+flush-259:0	07:24:59	2
1998817	99	22	19,2	cyclictest	2145508	-21	apt-get	09:30:13	1
1998817	99	22	17,3	cyclictest	2269770	-21	/usr/sbin/munin	11:30:20	1
1998825	99	21	19,2	cyclictest	2274964	-21	kworker/u8:4+events_unbound	11:50:11	3
1998817	99	21	18,2	cyclictest	2160725	-21	kworker/u8:3+flush-259:0	10:30:25	1
1998817	99	21	17,3	cyclictest	2212752	-21	kworker/u8:0+flush-259:0	11:05:23	1
1998817	99	21	17,3	cyclictest	2034577	-21	kworker/u8:3+flush-259:0	07:45:16	1
1998815	99	21	17,3	cyclictest	2045310	-21	kworker/u8:1+flush-259:0	08:15:16	0
1998825	99	20	17,2	cyclictest	2285087	-21	kworker/u8:3+flush-259:0	12:05:00	3
1998825	99	20	16,3	cyclictest	2160725	-21	kworker/u8:3+flush-259:0	10:45:22	3
1998825	99	20	15,3	cyclictest	335557	-21	systemd-journal	08:45:42	3
1998817	99	20	17,2	cyclictest	2034577	-21	kworker/u8:3+flush-259:0	07:50:16	1
1998817	99	20	16,3	cyclictest	2102796	-21	apt-get	08:50:11	1
1998817	99	20	15,4	cyclictest	2097640	-21	apt-get	08:45:10	1
1998815	99	20	13,5	cyclictest	2049490	-21	ntpq	07:55:22	0
1998825	99	19	16,2	cyclictest	2181350	-21	kworker/u8:1+events_unbound	10:10:24	3
1998825	99	19	16,2	cyclictest	2034577	-21	kworker/u8:3+flush-259:0	07:55:24	3
1998825	99	19	15,3	cyclictest	1988759	-21	kworker/u8:2+flush-259:0	07:20:23	3
1998820	99	19	16,2	cyclictest	2008726	-21	kworker/u8:0+events_unbound	07:25:17	2
1998817	99	19	16,2	cyclictest	2285087	-21	kworker/u8:3+events_unbound	12:10:23	1
1998817	99	19	16,2	cyclictest	2150414	-21	kworker/u8:0+events_unbound	09:55:16	1
1998815	99	19	15,3	cyclictest	2212752	-21	kworker/u8:0+flush-259:0	11:00:01	0
1998815	99	19	12,5	cyclictest	2191651	-21	latency_hist	10:15:01	0
1998825	99	18	16,2	cyclictest	2191678	-21	kworker/u8:2+events_unbound	11:00:28	3
1998825	99	18	15,2	cyclictest	2107943	-21	apt-config	08:55:00	3
1998825	99	18	15,1	cyclictest	0	-21	swapper/3	09:05:01	3
1998825	99	18	14,3	cyclictest	2108390	-21	kworker/u8:2+events_unbound	09:25:17	3
1998820	99	18	14,3	cyclictest	2092452	-21	kworker/u8:4+flush-259:0	09:05:21	2
1998820	99	18	14,3	cyclictest	1983017	-21	kworker/u8:3+flush-259:0	07:35:01	2
1998820	99	18	13,4	cyclictest	2191678	-21	kworker/u8:2+flush-259:0	10:35:22	2
1998817	99	18	15,2	cyclictest	2150414	-21	kworker/u8:0+flush-259:0	09:50:15	1
1998817	99	18	15,2	cyclictest	2045310	-21	kworker/u8:1+events_unbound	08:15:22	1
1998817	99	18	12,4	cyclictest	2289358	-21	ntpq	11:45:18	1
1998815	99	18	12,4	cyclictest	2113789	-21	diskstats	09:00:13	0
1998825	99	17	14,2	cyclictest	2321529	-21	kworker/u8:1+events_unbound	12:30:22	3
1998825	99	17	14,2	cyclictest	2176837	-21	tr	10:00:15	3
1998817	99	17	15,1	cyclictest	2285087	-21	kworker/u8:3+events_unbound	12:25:14	1
1998817	99	17	15,1	cyclictest	2285087	-21	kworker/u8:3+events_unbound	12:25:14	1
1998817	99	17	14,2	cyclictest	2274964	-21	kworker/u8:4+flush-259:0	11:35:24	1
1998817	99	17	12,4	cyclictest	335557	-21	systemd-journal	11:05:00	1
1998817	99	17	12,3	cyclictest	2087209	-21	cp	08:35:02	1
1998815	99	17	14,2	cyclictest	603	50	irq/132-enp0s29f1:rx-0	09:50:12	0
1998815	99	17	12,3	cyclictest	335557	-21	systemd-journal	07:27:41	0
1998815	99	17	12,3	cyclictest	2326719	-21	apt-get	12:25:11	0
1998815	99	17	12,3	cyclictest	2326719	-21	apt-get	12:25:11	0
1998825	99	16	13,2	cyclictest	2176139	-21	idleruntime-cro	10:00:00	3
1998825	99	16	13,2	cyclictest	1988759	-21	kworker/u8:2+flush-259:0	07:35:02	3
1998820	99	16	13,2	cyclictest	2034577	-21	kworker/u8:3+events_unbound	07:45:19	2
1998817	99	16	14,2	cyclictest	2316111	-21	kworker/u8:2+events_unbound	12:22:43	1
1998817	99	16	13,2	cyclictest	2180399	-21	ntp_kernel_err	10:00:20	1
1998817	99	16	13,2	cyclictest	2160725	-21	kworker/u8:3+flush-259:0	10:40:01	1
1998817	99	16	13,2	cyclictest	0	-21	swapper/1	08:00:00	1
1998817	99	16	12,3	cyclictest	2165849	-21	cron	09:50:00	1
1998815	99	16	14,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	11:00:15	0
1998815	99	16	14,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	09:59:41	0
1998815	99	16	13,2	cyclictest	603	50	irq/132-enp0s29f1:rx-0	12:15:27	0
1998815	99	16	13,2	cyclictest	603	50	irq/132-enp0s29f1:rx-0	12:10:14	0
1998815	99	16	13,2	cyclictest	603	50	irq/132-enp0s29f1:rx-0	10:15:13	0
1998815	99	16	11,4	cyclictest	2133623	-21	ntpq	09:15:21	0
1998815	99	16	10,4	cyclictest	2144393	-21	ntpq	09:25:21	0
1998825	99	15	9,4	cyclictest	2108286	-21	cp	08:55:02	3
1998825	99	15	13,2	cyclictest	2274964	-21	kworker/u8:4+events_unbound	11:35:12	3
1998825	99	15	12,2	cyclictest	2285087	-21	kworker/u8:3+flush-259:0	12:10:20	3
1998825	99	15	12,2	cyclictest	2274964	-21	kworker/u8:4+events_unbound	11:49:19	3
1998825	99	15	12,2	cyclictest	2160725	-21	kworker/u8:3+flush-259:0	10:20:21	3
1998825	99	15	12,2	cyclictest	2092452	-21	kworker/u8:4+flush-259:0	09:05:15	3
1998825	99	15	12,2	cyclictest	1988759	-21	kworker/u8:2+events_unbound	07:12:41	3
1998825	99	15	1,1	cyclictest	0	-21	swapper/3	10:55:00	3
1998820	99	15	12,1	cyclictest	0	-21	swapper/2	07:44:59	2
1998817	99	15	9,4	cyclictest	2028870	-21	ntpq	07:35:20	1
1998817	99	15	12,2	cyclictest	2285087	-21	kworker/u8:3+flush-259:0	12:15:20	1
1998817	99	15	12,2	cyclictest	2191678	-21	kworker/u8:2+events_unbound	10:40:20	1
1998817	99	15	12,2	cyclictest	2065877	-21	kworker/u8:3+flush-259:0	08:40:16	1
1998817	99	15	10,4	cyclictest	335557	-21	systemd-journal	07:30:42	1
1998815	99	15	8,5	cyclictest	2055980	-21	diskstats	08:05:14	0
1998815	99	15	13,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	07:45:15	0
1998815	99	15	10,4	cyclictest	2108357	-21	cat	08:55:01	0
1998815	99	15	10,3	cyclictest	335557	-21	systemd-journal	11:58:42	0
1998825	99	14	3,1	cyclictest	2181659	2	grep	10:05:13	3
1998825	99	14	12,2	cyclictest	2274964	-21	kworker/u8:4+flush-259:0	11:55:24	3
1998825	99	14	11,2	cyclictest	2316111	-21	kworker/u8:2+flush-259:0	12:38:47	3
1998825	99	14	11,2	cyclictest	2300832	-21	kworker/u8:1+flush-259:0	12:05:20	3
1998825	99	14	11,2	cyclictest	2155528	-21	idleruntime-cro	09:40:00	3
1998825	99	14	11,2	cyclictest	2129304	-21	kworker/u8:1+flush-259:0	09:40:24	3
1998825	99	14	11,2	cyclictest	2096406	-21	needreboot	08:40:19	3
1998825	99	14	11,1	cyclictest	0	-21	swapper/3	11:20:01	3
1998820	99	14	9,4	cyclictest	1988759	-21	kworker/u8:2+flush-259:0	07:40:00	2
1998820	99	14	9,3	cyclictest	335557	-21	systemd-journal	11:27:42	2
1998820	99	14	11,2	cyclictest	2108390	-21	kworker/u8:2+flush-259:0	09:45:16	2
1998820	99	14	11,2	cyclictest	2102531	-21	idleruntime-cro	08:50:00	2
1998817	99	14	12,2	cyclictest	2274964	-21	kworker/u8:4+events_unbound	11:40:23	1
1998817	99	14	12,2	cyclictest	2108390	-21	kworker/u8:2+events_unbound	09:00:24	1
1998817	99	14	11,2	cyclictest	2238537	-21	idleruntime-cro	11:00:00	1
1998817	99	14	11,2	cyclictest	2212752	-21	kworker/u8:0+flush-259:0	10:50:16	1
1998817	99	14	11,2	cyclictest	2045310	-21	kworker/u8:1+flush-259:0	08:06:12	1
1998817	99	14	10,3	cyclictest	2197241	-21	cut	10:20:12	1
1998815	99	14	13,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	09:24:06	0
1998815	99	14	12,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	11:45:21	0
1998815	99	14	12,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	10:50:23	0
1998815	99	14	12,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	10:35:23	0
1998815	99	14	12,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	10:27:41	0
1998815	99	14	12,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	10:20:24	0
1998815	99	14	12,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	10:05:25	0
1998815	99	14	11,2	cyclictest	603	50	irq/132-enp0s29f1:rx-0	10:30:57	0
1998815	99	14	10,3	cyclictest	2034577	-21	kworker/u8:3+flush-259:0	08:00:16	0
1998825	99	13	9,3	cyclictest	2316111	-21	kworker/u8:2+events_unbound	12:25:18	3
1998825	99	13	9,3	cyclictest	2316111	-21	kworker/u8:2+events_unbound	12:25:18	3
1998825	99	13	11,2	cyclictest	2150414	-21	kworker/u8:0+flush-259:0	09:50:25	3
1998825	99	13	11,1	cyclictest	2249573	-21	sed	11:10:17	3
1998825	99	13	11,1	cyclictest	0	-21	swapper/3	08:35:01	3
1998825	99	13	10,3	cyclictest	2045310	-21	kworker/u8:1+flush-259:0	08:25:26	3
1998825	99	13	10,2	cyclictest	2274964	-21	kworker/u8:4+events_unbound	11:40:14	3
1998825	99	13	10,2	cyclictest	2191678	-21	kworker/u8:2+flush-259:0	10:55:18	3
1998825	99	13	10,2	cyclictest	2108390	-21	kworker/u8:2+events_unbound	09:15:20	3
1998820	99	13	7,4	cyclictest	2311175	-21	/usr/sbin/munin	12:10:14	2
1998820	99	13	10,2	cyclictest	2248446	-21	unixbench_singl	11:05:24	2
1998820	99	13	10,2	cyclictest	0	-21	swapper/2	11:20:01	2
1998817	99	13	10,2	cyclictest	2300158	-21	unixbench_singl	11:55:25	1
1998817	99	13	10,2	cyclictest	2274964	-21	kworker/u8:4+flush-259:0	11:53:52	1
1998815	99	13	11,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	11:30:23	0
1998815	99	13	11,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	09:30:17	0
1998815	99	13	11,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	07:37:31	0
1998825	99	12	9,2	cyclictest	335557	-21	systemd-journal	12:19:24	3
1998825	99	12	9,2	cyclictest	2202516	-21	fschecks_time	10:25:15	3
1998825	99	12	9,2	cyclictest	1988759	-21	kworker/u8:2+flush-259:0	08:00:21	3
1998825	99	12	9,2	cyclictest	1988759	-21	kworker/u8:2+flush-259:0	07:45:23	3
1998825	99	12	10,2	cyclictest	1988759	-21	kworker/u8:2+flush-259:0	07:27:17	3
1998825	99	12	10,1	cyclictest	0	-21	swapper/3	08:15:20	3
1998820	99	12	8,3	cyclictest	2045310	-21	kworker/u8:1+flush-259:0	08:40:00	2
1998820	99	12	7,3	cyclictest	2129304	-21	kworker/u8:1+flush-259:0	09:34:46	2
1998820	99	12	6,4	cyclictest	490	-21	dbus-daemon	08:55:00	2
1998820	99	12	6,4	cyclictest	335557	-21	systemd-journal	09:05:00	2
1998820	99	12	5,5	cyclictest	2081399	-21	latency_hist	08:30:01	2
1998817	99	12	9,2	cyclictest	2160725	-21	kworker/u8:3+events_unbound	10:50:01	1
1998817	99	12	9,2	cyclictest	2092452	-21	kworker/u8:4+flush-259:0	08:55:23	1
1998817	99	12	9,2	cyclictest	2045310	-21	kworker/u8:1+events_unbound	08:25:22	1
1998817	99	12	8,3	cyclictest	2150639	-21	apt-get	09:35:13	1
1998817	99	12	10,2	cyclictest	2321529	-21	kworker/u8:1+flush-259:0	12:35:19	1
1998817	99	12	10,2	cyclictest	2045310	-21	kworker/u8:1+events_unbound	08:20:15	1
1998815	99	12	10,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	07:40:18	0
1998825	99	11	8,2	cyclictest	2274731	-21	latency_hist	11:35:01	3
1998820	99	11	7,3	cyclictest	2218285	-21	cut	10:40:12	2
1998820	99	11	5,4	cyclictest	509	-21	rs:main		2
1998817	99	11	9,2	cyclictest	2300832	-21	kworker/u8:1+flush-259:0	12:05:27	1
1998817	99	11	9,1	cyclictest	0	-21	swapper/1	10:14:59	1
1998817	99	11	9,1	cyclictest	0	-21	swapper/1	07:14:59	1
1998817	99	11	8,2	cyclictest	2262566	-21	kthreadcore	11:20:19	1
1998817	99	11	8,2	cyclictest	2135401	-21	fschecks_time	09:20:15	1
1998817	99	11	8,2	cyclictest	2129304	-21	kworker/u8:1+flush-259:0	09:42:51	1
1998817	99	11	8,2	cyclictest	2045310	-21	kworker/u8:1+flush-259:0	08:10:22	1
1998817	99	11	7,3	cyclictest	2202539	-21	perl	10:25:14	1
1998817	99	11	1,2	cyclictest	2196831	-21	idleruntime-cro	10:20:00	1
1998815	99	11	9,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	12:02:00	0
1998825	99	10	8,1	cyclictest	0	-21	swapper/3	10:15:18	3
1998825	99	10	8,1	cyclictest	0	-21	swapper/3	09:45:25	3
1998825	99	10	7,2	cyclictest	2244358	-21	irqcore	11:05:15	3
1998825	99	10	7,2	cyclictest	2075341	-21	ntpq	08:20:21	3
1998820	99	10	6,3	cyclictest	2191678	-21	kworker/u8:2+flush-259:0	10:25:24	2
1998817	99	10	3,5	cyclictest	2181592	-21	apt-get	10:05:12	1
1998825	99	9	7,1	cyclictest	0	-21	swapper/3	10:35:23	3
1998825	99	9	6,2	cyclictest	2212752	-21	kworker/u8:0+flush-259:0	11:25:21	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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