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 Sun Nov 30, 2025 00:44:05)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
680062	99	39	34,3	cyclictest	949840	-21	latency_hist	23:30:00	2
680061	99	39	36,2	cyclictest	685442	-21	kworker/u8:2+flush-259:0	21:03:29	1
680060	99	38	34,3	cyclictest	773094	-21	kworker/u8:3+flush-259:0	20:40:19	0
680062	99	36	30,4	cyclictest	2698871	-21	systemd-journal	23:14:59	2
680067	99	34	28,4	cyclictest	2698871	-21	systemd-journal	00:35:18	3
680061	99	34	31,2	cyclictest	705950	-21	kworker/u8:0+flush-259:0	19:50:18	1
680061	99	34	27,5	cyclictest	986265	-21	latency_hist	00:05:00	1
680067	99	33	28,4	cyclictest	835391	-21	gpgv	21:40:00	3
680062	99	32	28,3	cyclictest	981140	-21	kworker/u8:0+flush-259:0	00:15:17	2
680060	99	32	26,4	cyclictest	913361	-21	latency_hist	22:55:02	0
680067	99	31	26,4	cyclictest	793730	-21	kworker/u8:1+flush-259:0	22:00:00	3
680062	99	31	23,5	cyclictest	788574	-21	latency_hist	20:55:00	2
680060	99	31	23,5	cyclictest	711082	-21	latency_hist	19:40:01	0
680067	99	30	24,4	cyclictest	846666	-21	/usr/sbin/munin	21:50:17	3
680067	99	28	13,2	cyclictest	793694	-21	sh	21:00:00	3
680061	99	28	24,3	cyclictest	882495	-21	kworker/u8:0+flush-259:0	22:35:00	1
680062	99	27	23,2	cyclictest	685442	-21	kworker/u8:2+flush-259:0	21:20:00	2
680061	99	27	23,3	cyclictest	793730	-21	kworker/u8:1+events_unbound	22:10:00	1
680060	99	27	24,2	cyclictest	814699	-21	kworker/u8:4+flush-259:0	22:10:00	0
680060	99	27	24,2	cyclictest	696119	-21	kworker/u8:3+events_unbound	19:30:01	0
680060	99	27	24,2	cyclictest	696119	-21	kworker/u8:3+events_unbound	19:30:01	0
680060	99	27	23,3	cyclictest	631729	-21	kworker/u8:0+events_unbound	19:15:20	0
680062	99	26	22,3	cyclictest	981140	-21	kworker/u8:0+events_unbound	00:25:19	2
680062	99	26	22,3	cyclictest	773103	-21	apt	20:40:01	2
680061	99	26	22,3	cyclictest	705950	-21	kworker/u8:0+flush-259:0	20:00:00	1
680060	99	26	19,5	cyclictest	742078	-21	latency_hist	20:10:01	0
680062	99	25	19,4	cyclictest	735970	-21	ntpq	20:00:23	2
680061	99	25	22,2	cyclictest	934423	-21	kworker/u8:2+events_unbound	23:25:18	1
680060	99	25	20,3	cyclictest	846028	-21	gpgv	21:50:00	0
680067	99	24	18,4	cyclictest	799276	-21	diskstats	21:05:17	3
680067	99	23	12,2	cyclictest	897925	-21	cron	22:40:00	3
680062	99	23	18,4	cyclictest	981140	-21	kworker/u8:0+flush-259:0	00:15:01	2
680061	99	23	19,3	cyclictest	965523	-21	kworker/u8:2+events_unbound	23:57:32	1
680061	99	23	19,3	cyclictest	965523	-21	kworker/u8:2+events_unbound	23:57:31	1
680061	99	23	18,4	cyclictest	830127	-21	latency_hist	21:35:00	1
680061	99	23	18,4	cyclictest	2698871	-21	systemd-journal	20:30:00	1
680060	99	23	19,3	cyclictest	773094	-21	kworker/u8:3+events_unbound	21:05:20	0
680060	99	23	15,6	cyclictest	917582	-21	ntpq	22:55:22	0
680067	99	22	17,4	cyclictest	845094	-21	ntpq	21:45:22	3
680067	99	22	17,4	cyclictest	2698871	-21	systemd-journal	22:07:31	3
680067	99	22	16,4	cyclictest	778275	-21	latency_hist	20:45:01	3
680062	99	22	15,5	cyclictest	756752	-21	ntpq	20:20:24	2
680061	99	22	19,2	cyclictest	814694	-21	kworker/u8:3+flush-259:0	21:20:31	1
680061	99	22	18,3	cyclictest	970662	-21	kworker/u8:4+events_unbound	23:55:00	1
680061	99	22	14,6	cyclictest	747231	-21	latency_hist	20:15:00	1
680060	99	22	18,3	cyclictest	690658	-21	apt-get	19:20:12	0
680060	99	22	1,19	cyclictest	798872	-21	unin-run	21:05:00	0
680067	99	21	18,2	cyclictest	918492	-21	cron	23:00:01	3
680067	99	21	14,5	cyclictest	2698871	-21	systemd-journal	19:25:00	3
680062	99	21	15,4	cyclictest	2698871	-21	systemd-journal	23:59:32	2
680062	99	21	15,4	cyclictest	2698871	-21	systemd-journal	23:59:31	2
680061	99	21	17,3	cyclictest	1018315	-21	apt-get	00:35:13	1
680060	99	21	18,2	cyclictest	814699	-21	kworker/u8:4+events_unbound	22:40:01	0
680060	99	21	15,4	cyclictest	680006	-21	latency_hist	19:10:00	0
680067	99	20	16,3	cyclictest	685442	-21	kworker/u8:2+flush-259:0	20:02:44	3
680067	99	20	15,3	cyclictest	825224	-21	/usr/sbin/munin	21:30:23	3
680062	99	20	13,5	cyclictest	846516	-21	cat	21:50:01	2
680061	99	20	17,2	cyclictest	685442	-21	kworker/u8:2+flush-259:0	20:15:16	1
680061	99	20	16,3	cyclictest	705950	-21	kworker/u8:0+flush-259:0	19:45:00	1
680061	99	20	16,3	cyclictest	685442	-21	kworker/u8:2+flush-259:0	19:35:21	1
680067	99	19	14,3	cyclictest	820110	-21	apt-get	21:25:12	3
680062	99	19	16,2	cyclictest	773094	-21	kworker/u8:3+flush-259:0	21:00:19	2
680061	99	19	15,3	cyclictest	939779	-21	kworker/u8:0+flush-259:0	23:35:15	1
680061	99	19	15,3	cyclictest	882495	-21	kworker/u8:0+events_unbound	22:45:17	1
680061	99	19	15,3	cyclictest	814694	-21	kworker/u8:3+flush-259:0	21:25:18	1
680061	99	19	13,4	cyclictest	680461	-21	diskstats	19:10:14	1
680060	99	19	15,3	cyclictest	773094	-21	kworker/u8:3+events_unbound	20:45:18	0
680060	99	19	14,4	cyclictest	997259	-21	apt-get	00:15:12	0
680060	99	19	13,4	cyclictest	887658	-21	latency_hist	22:30:01	0
680067	99	18	16,1	cyclictest	0	-21	swapper/3	22:55:00	3
680067	99	18	15,2	cyclictest	1	-21	systemd	00:20:00	3
680067	99	18	13,3	cyclictest	2698871	-21	systemd-journal	23:17:31	3
680067	99	18	11,5	cyclictest	950253	-21	diskstats	23:30:12	3
680062	99	18	16,1	cyclictest	0	-21	swapper/2	19:14:59	2
680062	99	18	13,4	cyclictest	835279	-21	apt-get	21:40:00	2
680061	99	18	14,3	cyclictest	814699	-21	kworker/u8:4+events_unbound	22:35:18	1
680061	99	18	14,3	cyclictest	804041	-21	kworker/u8:0+flush-259:0	21:10:25	1
680061	99	18	14,3	cyclictest	773094	-21	kworker/u8:3+events_unbound	20:54:33	1
680061	99	18	13,4	cyclictest	986533	-21	apt-get	00:05:13	1
680061	99	18	11,5	cyclictest	1001268	-21	ntpq	00:15:21	1
680060	99	18	15,2	cyclictest	696119	-21	kworker/u8:3+events_unbound	20:00:00	0
680060	99	18	13,4	cyclictest	809792	-21	/usr/sbin/munin	21:15:16	0
680060	99	18	12,4	cyclictest	934375	-21	latency_hist	23:15:00	0
680060	99	18	12,4	cyclictest	882475	-21	latency_hist	22:25:01	0
680067	99	17	14,2	cyclictest	871341	-21	ntp_offset	22:10:22	3
680067	99	17	12,3	cyclictest	975611	-21	gpgv	23:55:01	3
680062	99	17	9,6	cyclictest	778283	-21	munin-run	20:45:01	2
680062	99	17	13,3	cyclictest	856958	-21	kworker/u8:3+flush-259:0	22:10:17	2
680062	99	17	13,3	cyclictest	685442	-21	kworker/u8:2+flush-259:0	20:45:27	2
680061	99	17	13,3	cyclictest	934423	-21	kworker/u8:2+events_unbound	23:30:16	1
680061	99	17	13,3	cyclictest	918521	-21	kworker/u8:0+flush-259:0	23:05:17	1
680061	99	17	12,4	cyclictest	835461	-21	cp	21:40:00	1
680061	99	17	10,5	cyclictest	918499	-21	latency_hist	23:00:01	1
680060	99	17	14,2	cyclictest	731714	-21	kworker/u8:1+events_unbound	20:25:17	0
680060	99	17	14,2	cyclictest	614	50	irq/134-enp0s29f1:tx-0	00:00:22	0
680060	99	17	14,2	cyclictest	606	50	irq/133-enp0s29f1:rx-0	19:51:53	0
680060	99	17	13,3	cyclictest	814699	-21	kworker/u8:4+events_unbound	22:40:25	0
680060	99	17	12,4	cyclictest	767964	-21	sh	20:35:01	0
680062	99	16	9,1	cyclictest	0	-21	swapper/2	22:50:00	2
680062	99	16	3,7	cyclictest	731706	-21	munin-run	20:00:00	2
680062	99	16	12,3	cyclictest	814699	-21	kworker/u8:4+flush-259:0	21:45:00	2
680062	99	16	11,4	cyclictest	2698871	-21	systemd-journal	00:05:00	2
680061	99	16	13,2	cyclictest	793730	-21	kworker/u8:1+flush-259:0	21:45:15	1
680061	99	16	13,2	cyclictest	631729	-21	kworker/u8:0+flush-259:0	19:17:32	1
680061	99	16	12,3	cyclictest	981140	-21	kworker/u8:0+events_unbound	00:10:13	1
680061	99	16	12,3	cyclictest	814699	-21	kworker/u8:4+flush-259:0	22:45:00	1
680061	99	16	12,3	cyclictest	804041	-21	kworker/u8:0+flush-259:0	21:15:26	1
680061	99	16	12,3	cyclictest	696119	-21	kworker/u8:3+events_unbound	19:25:16	1
680061	99	16	12,3	cyclictest	696119	-21	kworker/u8:3+events_unbound	19:25:16	1
680061	99	16	12,3	cyclictest	685442	-21	kworker/u8:2+flush-259:0	20:00:22	1
680061	99	16	11,3	cyclictest	685442	-21	kworker/u8:2+events_unbound	19:45:20	1
680061	99	16	10,4	cyclictest	835940	-21	/usr/sbin/munin	21:40:16	1
680060	99	16	9,5	cyclictest	2698871	-21	systemd-journal	20:25:00	0
680060	99	16	13,2	cyclictest	835935	-21	kworker/u8:0+events_unbound	21:40:18	0
680060	99	16	13,2	cyclictest	830798	-21	irqcore	21:35:17	0
680067	99	15	9,4	cyclictest	929011	-21	cp	23:10:01	3
680062	99	15	4,6	cyclictest	903038	-21	munin-run	22:45:00	2
680062	99	15	12,2	cyclictest	929226	-21	apt-key	23:10:01	2
680062	99	15	12,2	cyclictest	711755	-21	irqcore	19:40:18	2
680062	99	15	12,2	cyclictest	0	-21	swapper/2	19:49:59	2
680062	99	15	12,1	cyclictest	0	-21	swapper/2	20:10:17	2
680062	99	15	11,2	cyclictest	0	-21	swapper/2	23:40:01	2
680061	99	15	12,2	cyclictest	768641	-21	grep	20:35:17	1
680061	99	15	11,3	cyclictest	908425	-21	kworker/u8:3+flush-259:0	23:15:20	1
680061	99	15	11,3	cyclictest	903263	-21	kworker/u8:1+events_unbound	23:00:24	1
680061	99	15	11,3	cyclictest	903263	-21	kworker/u8:1+events_unbound	22:51:32	1
680061	99	15	11,3	cyclictest	814699	-21	kworker/u8:4+flush-259:0	22:25:21	1
680061	99	15	11,3	cyclictest	773094	-21	kworker/u8:3+events_unbound	21:05:18	1
680061	99	15	11,3	cyclictest	731714	-21	kworker/u8:1+events_unbound	20:41:30	1
680060	99	15	13,1	cyclictest	606	50	irq/133-enp0s29f1:rx-0	23:20:24	0
680060	99	15	13,1	cyclictest	606	50	irq/133-enp0s29f1:rx-0	23:15:18	0
680060	99	15	13,1	cyclictest	606	50	irq/133-enp0s29f1:rx-0	22:17:50	0
680060	99	15	13,1	cyclictest	606	50	irq/133-enp0s29f1:rx-0	21:10:17	0
680060	99	15	13,1	cyclictest	606	50	irq/133-enp0s29f1:rx-0	20:10:07	0
680060	99	15	13,1	cyclictest	606	50	irq/133-enp0s29f1:rx-0	19:10:25	0
680060	99	15	13,1	cyclictest	606	50	irq/133-enp0s29f1:rx-0	00:20:16	0
680060	99	15	12,2	cyclictest	606	50	irq/133-enp0s29f1:rx-0	20:55:22	0
680060	99	15	11,3	cyclictest	981140	-21	kworker/u8:0+events_unbound	00:25:17	0
680060	99	15	10,3	cyclictest	3000063	-21	rs:main		0
680067	99	14	11,2	cyclictest	1013580	-21	sed	00:30:17	3
680062	99	14	12,1	cyclictest	877343	-21	cron	22:20:01	2
680062	99	14	10,2	cyclictest	0	-21	swapper/2	22:25:00	2
680061	99	14	10,3	cyclictest	793730	-21	kworker/u8:1+events_unbound	21:58:09	1
680060	99	14	13,1	cyclictest	606	50	irq/133-enp0s29f1:rx-0	21:26:59	0
680060	99	14	13,1	cyclictest	606	50	irq/133-enp0s29f1:rx-0	20:50:23	0
680060	99	14	13,1	cyclictest	606	50	irq/133-enp0s29f1:rx-0	20:15:17	0
680060	99	14	12,1	cyclictest	606	50	irq/133-enp0s29f1:rx-0	23:40:17	0
680060	99	14	12,1	cyclictest	606	50	irq/133-enp0s29f1:rx-0	22:45:24	0
680060	99	14	12,1	cyclictest	606	50	irq/133-enp0s29f1:rx-0	22:14:35	0
680060	99	14	11,2	cyclictest	606	50	irq/133-enp0s29f1:rx-0	00:10:17	0
680067	99	13	8,4	cyclictest	711346	-21	apt-get	19:40:14	3
680067	99	13	8,3	cyclictest	2698871	-21	systemd-journal	22:28:30	3
680067	99	13	8,3	cyclictest	2698871	-21	systemd-journal	20:00:00	3
680067	99	13	7,4	cyclictest	2698871	-21	systemd-journal	20:46:31	3
680067	99	13	6,5	cyclictest	767970	-21	latency_hist	20:35:01	3
680067	99	13	10,2	cyclictest	981463	-21	cpuspeed_turbos	00:00:15	3
680067	99	13	10,2	cyclictest	819844	-21	sh	21:25:00	3
680067	99	13	10,2	cyclictest	794362	-21	irqcore	21:00:18	3
680067	99	13	10,2	cyclictest	703306	-21	kthreadcore	19:30:21	3
680062	99	13	11,1	cyclictest	0	-21	swapper/2	21:10:00	2
680061	99	13	9,2	cyclictest	861916	-21	sh	22:05:01	1
680061	99	13	9,2	cyclictest	0	-21	swapper/1	20:50:01	1
680061	99	13	7,4	cyclictest	928824	-21	apt-get	23:10:02	1
680061	99	13	10,2	cyclictest	737211	-21	cpuspeed_turbos	20:05:16	1
680060	99	13	12,1	cyclictest	606	50	irq/133-enp0s29f1:rx-0	20:38:53	0
680060	99	13	11,1	cyclictest	606	50	irq/133-enp0s29f1:rx-0	23:55:10	0
680060	99	13	11,1	cyclictest	606	50	irq/133-enp0s29f1:rx-0	23:55:09	0
680060	99	13	11,1	cyclictest	606	50	irq/133-enp0s29f1:rx-0	23:50:20	0
680060	99	13	11,1	cyclictest	606	50	irq/133-enp0s29f1:rx-0	21:50:16	0
680060	99	13	11,1	cyclictest	606	50	irq/133-enp0s29f1:rx-0	19:40:25	0
680067	99	12	9,2	cyclictest	929919	-21	grep	23:10:17	3
680067	99	12	9,2	cyclictest	836388	-21	irqcore	21:40:18	3
680067	99	12	8,2	cyclictest	0	-21	swapper/3	19:15:00	3
680067	99	12	7,3	cyclictest	965559	-21	apt-get	23:45:13	3
680067	99	12	10,1	cyclictest	0	-21	swapper/3	21:20:00	3
680067	99	12	0,9	cyclictest	731714	-21	kworker/u8:1+flush-259:0	20:25:00	3
680062	99	12	9,2	cyclictest	939546	-21	sh	23:19:59	2
680062	99	12	9,2	cyclictest	758000	-21	cpuspeed_turbos	20:25:14	2
680062	99	12	9,2	cyclictest	0	-21	swapper/2	21:50:00	2
680062	99	12	8,3	cyclictest	675115	-21	kworker/u8:1+flush-259:0	19:20:17	2
680062	99	12	6,4	cyclictest	793697	-21	latency_hist	20:59:59	2
680062	99	12	10,1	cyclictest	0	-21	swapper/2	21:35:00	2
680062	99	12	10,1	cyclictest	0	-21	swapper/2	21:10:00	2
680062	99	12	10,1	cyclictest	0	-21	swapper/2	19:35:00	2
680061	99	12	9,2	cyclictest	908425	-21	kworker/u8:3+events_unbound	23:40:23	1
680061	99	12	9,2	cyclictest	767539	-21	unixbench_singl	20:30:27	1
680061	99	12	9,2	cyclictest	675115	-21	kworker/u8:1+events_unbound	19:20:13	1
680061	99	12	9,2	cyclictest	1005120	-21	kthreadcore	00:20:19	1
680060	99	12	9,2	cyclictest	934423	-21	kworker/u8:2+events_unbound	23:30:15	0
680060	99	12	8,2	cyclictest	606	50	irq/133-enp0s29f1:rx-0	23:25:19	0
680060	99	12	10,1	cyclictest	606	50	irq/133-enp0s29f1:rx-0	23:05:25	0
680067	99	11	8,2	cyclictest	945179	-21	fschecks_time	23:25:17	3
680067	99	11	8,2	cyclictest	0	-21	swapper/3	00:20:25	3
680067	99	11	7,3	cyclictest	768231	-21	apt-get	20:35:13	3
680067	99	11	5,4	cyclictest	955206	-21	/usr/sbin/munin	23:35:15	3
680067	99	11	5,4	cyclictest	492	-21	dbus-daemon	19:39:59	3
680062	99	11	8,2	cyclictest	969425	-21	needreboot	23:45:21	2
680062	99	11	7,2	cyclictest	0	-21	swapper/2	23:25:01	2
680061	99	11	7,3	cyclictest	793730	-21	kworker/u8:1+events_unbound	22:20:21	1
680061	99	11	7,3	cyclictest	731714	-21	kworker/u8:1+events_unbound	20:20:24	1
680060	99	11	9,2	cyclictest	606	50	irq/133-enp0s29f1:rx-0	00:30:20	0
680067	99	10	8,1	cyclictest	0	-21	swapper/3	22:50:00	3
680067	99	10	7,2	cyclictest	960803	-21	irqcore	23:40:19	3
680067	99	10	7,2	cyclictest	1012451	-21	unixbench_singl	00:25:28	3
680067	99	10	7,1	cyclictest	0	-21	swapper/3	22:20:00	3
680067	99	10	5,4	cyclictest	804655	-21	/usr/sbin/munin	21:10:22	3
680067	99	10	5,4	cyclictest	742173	-21	cat	20:10:01	3
680067	99	10	5,3	cyclictest	690162	-21	sshd	19:17:27	3
680062	99	10	6,2	cyclictest	748451	-21	irqcore	20:15:18	2
680062	99	10	5,3	cyclictest	2698871	-21	systemd-journal	22:30:00	2
680061	99	10	6,3	cyclictest	981140	-21	kworker/u8:0+events_unbound	00:25:15	1
680067	99	9	7,1	cyclictest	0	-21	swapper/3	22:25:01	3
680067	99	9	7,1	cyclictest	0	-21	swapper/3	20:20:00	3
680067	99	9	7,1	cyclictest	0	-21	swapper/3	19:25:26	3
680067	99	9	7,1	cyclictest	0	-21	swapper/3	19:25:25	3
680067	99	9	6,2	cyclictest	860947	-21	needreboot	22:00:22	3
680067	99	9	6,2	cyclictest	783737	-21	cpuspeed_turbos	20:50:14	3
680067	99	9	6,2	cyclictest	722072	-21	irqcore	19:50:19	3
680067	99	9	5,3	cyclictest	970662	-21	kworker/u8:4+flush-259:0	23:55:01	3
680067	99	9	5,3	cyclictest	970662	-21	kworker/u8:4+flush-259:0	23:55:01	3
680067	99	9	5,2	cyclictest	922777	-21	ntpq	23:00:22	3
680067	99	9	4,4	cyclictest	757876	-21	apt-get	20:25:13	3
680067	99	8	1,5	cyclictest	892787	-21	munin-run	22:35:01	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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