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 Wed Sep 09, 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
1805718	2	68	0,5	sleep2	0	-21	swapper/2	23:14:15	2
1772926	2	58	0,5	sleep2	0	-21	swapper/2	22:44:10	2
1561119	99	58	49,6	cyclictest	1732354	-21	latency_hist	22:00:01	0
1561119	99	57	48,6	cyclictest	1613005	-21	latency_hist	20:00:01	0
1561126	99	56	49,5	cyclictest	1697455	-21	kworker/u8:1+events_unbound	21:49:21	1
1561130	99	54	49,4	cyclictest	1885923	-21	kworker/u8:2+events_unbound	00:39:22	2
1561119	99	50	39,8	cyclictest	278	-21	systemd-journal	21:55:00	0
1561126	99	49	43,4	cyclictest	1379172	-21	kworker/u8:3+events_unbound	19:39:17	1
1561126	99	49	42,5	cyclictest	1762482	-21	kworker/u8:0+flush-8:0	00:14:24	1
1561126	99	48	44,3	cyclictest	1801831	-21	kworker/u8:2+flush-8:0	23:34:10	1
1561126	99	48	40,6	cyclictest	1722667	-21	kworker/u8:3+flush-8:0	22:34:23	1
1561126	99	47	42,4	cyclictest	1722667	-21	kworker/u8:3+flush-8:0	21:54:09	1
1561126	99	47	42,4	cyclictest	1637813	-21	kworker/u8:2+events_unbound	20:44:11	1
1561126	99	47	42,4	cyclictest	1637813	-21	kworker/u8:2+events_unbound	20:44:10	1
1561126	99	47	42,3	cyclictest	1702801	-21	kworker/u8:0+events_unbound	22:04:10	1
1561126	99	47	41,4	cyclictest	1593469	-21	kworker/u8:0+events_unbound	20:24:24	1
1561126	99	46	41,3	cyclictest	1561303	-21	kworker/u8:1+events_unbound	19:34:16	1
1561126	99	45	38,5	cyclictest	1722667	-21	kworker/u8:3+flush-8:0	23:09:11	1
1561126	99	45	38,5	cyclictest	1608095	-21	latency_hist	19:55:01	1
1561126	99	45	34,9	cyclictest	1642850	-21	cp	20:30:00	1
1561126	99	45	33,8	cyclictest	278	-21	systemd-journal	22:39:08	1
1561119	99	45	35,8	cyclictest	1830611	-21	ntpq	23:39:18	0
1561126	99	44	38,4	cyclictest	1816379	-21	kworker/u8:1+events_unbound	23:54:24	1
1561126	99	44	34,4	cyclictest	1772185	-21	kworker/u8:2+flush-8:0	22:49:11	1
1561126	99	43	39,3	cyclictest	1637813	-21	kworker/u8:2+events_unbound	21:04:24	1
1561126	99	43	39,3	cyclictest	1379172	-21	kworker/u8:3+events_unbound	20:14:13	1
1561126	99	43	38,3	cyclictest	1637813	-21	kworker/u8:2+events_unbound	21:15:01	1
1561126	99	43	37,4	cyclictest	1762482	-21	kworker/u8:0+events_unbound	00:24:09	1
1561126	99	43	34,6	cyclictest	278	-21	systemd-journal	20:01:09	1
1822910	2	42	0,6	sleep2	0	-21	swapper/2	23:34:13	2
1561130	99	42	37,4	cyclictest	1801831	-21	kworker/u8:2+events_unbound	23:21:09	2
1561126	99	42	38,3	cyclictest	1702801	-21	kworker/u8:0+events_unbound	22:09:09	1
1561126	99	42	37,4	cyclictest	1742196	-21	kworker/u8:1+events_unbound	22:19:21	1
1561126	99	41	37,3	cyclictest	1379172	-21	kworker/u8:3+events_unbound	20:09:10	1
1561126	99	41	36,4	cyclictest	1762482	-21	kworker/u8:0+events_unbound	23:04:17	1
1561126	99	41	36,3	cyclictest	1762482	-21	kworker/u8:0+flush-8:0	00:19:10	1
1561126	99	40	36,3	cyclictest	1637813	-21	kworker/u8:2+events_unbound	20:54:15	1
1561126	99	40	33,5	cyclictest	1637813	-21	kworker/u8:2+flush-8:0	21:09:25	1
1561126	99	40	33,5	cyclictest	1637813	-21	kworker/u8:2+events_unbound	20:30:03	1
1561126	99	40	31,6	cyclictest	1593469	-21	kworker/u8:0+flush-8:0	19:59:19	1
1561130	99	39	34,4	cyclictest	1866357	-21	kworker/u8:1+events_unbound	00:19:17	2
1561130	99	39	32,5	cyclictest	1722610	-21	base64	21:50:00	2
1561126	99	39	34,4	cyclictest	1637813	-21	kworker/u8:2+flush-8:0	21:24:14	1
1561126	99	39	33,4	cyclictest	1697455	-21	kworker/u8:1+events_unbound	21:34:25	1
1561126	99	39	32,5	cyclictest	1826882	-21	apt-get	23:39:06	1
1561126	99	38	34,3	cyclictest	1801831	-21	kworker/u8:2+flush-8:0	23:14:13	1
1561126	99	38	32,4	cyclictest	1379172	-21	kworker/u8:3+events_unbound	19:19:19	1
1561126	99	38	31,5	cyclictest	1762482	-21	kworker/u8:0+events_unbound	23:44:23	1
1561126	99	38	31,5	cyclictest	1742196	-21	kworker/u8:1+flush-8:0	22:29:19	1
1561126	99	38	30,5	cyclictest	278	-21	systemd-journal	20:18:09	1
1561119	99	38	31,5	cyclictest	1870409	-21	ntpq	00:19:19	0
1561119	99	38	31,5	cyclictest	1379172	-21	kworker/u8:3+flush-8:0	20:29:09	0
1561126	99	37	32,3	cyclictest	1722667	-21	kworker/u8:3+events_unbound	22:24:24	1
1561126	99	37	31,5	cyclictest	1816379	-21	kworker/u8:1+events_unbound	23:29:09	1
1561126	99	37	30,5	cyclictest	1866357	-21	kworker/u8:1+flush-8:0	00:39:18	1
1561126	99	37	30,5	cyclictest	1379172	-21	kworker/u8:3+flush-8:0	19:29:10	1
1561126	99	36	32,3	cyclictest	1762482	-21	kworker/u8:0+events_unbound	22:59:12	1
1561126	99	36	31,4	cyclictest	1379172	-21	kworker/u8:3+events_unbound	19:49:16	1
1561126	99	36	29,5	cyclictest	1637813	-21	kworker/u8:2+flush-8:0	20:59:25	1
1561119	99	36	28,6	cyclictest	1801599	-21	latency_hist	23:10:01	0
1561130	99	35	31,3	cyclictest	1593469	-21	kworker/u8:0+events_unbound	20:29:23	2
1561130	99	35	29,4	cyclictest	1593469	-21	kworker/u8:0+events_unbound	20:04:22	2
1561126	99	35	29,4	cyclictest	1379172	-21	kworker/u8:3+events_unbound	20:39:08	1
1561126	99	35	28,5	cyclictest	1697455	-21	kworker/u8:1+flush-8:0	21:29:12	1
1561119	99	35	29,4	cyclictest	1628421	-21	apt-get	20:19:06	0
1561130	99	34	30,3	cyclictest	1379172	-21	kworker/u8:3+events_unbound	21:30:00	2
1561126	99	34	30,3	cyclictest	1742196	-21	kworker/u8:1+events_unbound	22:14:12	1
1561126	99	34	29,4	cyclictest	1851286	-21	kworker/u8:3+events_unbound	00:04:25	1
1561126	99	34	29,4	cyclictest	1379172	-21	kworker/u8:3+events_unbound	19:44:13	1
1561126	99	34	29,4	cyclictest	1379172	-21	kworker/u8:3+events_unbound	19:44:13	1
1561126	99	34	28,5	cyclictest	1722667	-21	kworker/u8:3+events_unbound	21:59:27	1
1561126	99	34	27,5	cyclictest	1772185	-21	kworker/u8:2+flush-8:0	22:44:13	1
1561126	99	34	27,5	cyclictest	1762482	-21	kworker/u8:0+flush-8:0	23:19:17	1
1561126	99	34	22,9	cyclictest	278	-21	systemd-journal	00:00:00	1
1561119	99	34	25,6	cyclictest	1816445	-21	latency_hist	23:25:01	0
1561130	99	33	25,6	cyclictest	1752123	-21	cron	22:20:00	2
1561126	99	33	27,4	cyclictest	1529180	-21	kworker/u8:2+events_unbound	19:14:16	1
1561119	99	33	29,3	cyclictest	1580872	-21	kthreadcore	19:29:14	0
1561119	99	33	24,7	cyclictest	1851252	-21	latency_hist	00:00:00	0
1561119	99	33	0,32	cyclictest	1757897	-21	sshd	22:29:09	0
1561130	99	32	28,2	cyclictest	1846065	-21	cron	23:55:00	2
1561126	99	32	27,3	cyclictest	1762482	-21	kworker/u8:0+flush-8:0	23:24:16	1
1561126	99	32	27,3	cyclictest	1561303	-21	kworker/u8:1+events_unbound	19:24:16	1
1561119	99	32	23,7	cyclictest	1652248	-21	ntpq	20:39:20	0
1561119	99	32	22,8	cyclictest	278	-21	systemd-journal	22:40:00	0
1561126	99	31	28,1	cyclictest	1762482	-21	kworker/u8:0+events_unbound	00:30:07	1
1561126	99	31	26,4	cyclictest	1816379	-21	kworker/u8:1+flush-8:0	23:49:15	1
1561126	99	31	24,5	cyclictest	1781771	-21	kworker/u8:1+flush-8:0	22:54:19	1
1561126	99	31	24,5	cyclictest	1781771	-21	kworker/u8:1+flush-8:0	22:54:19	1
1561130	99	30	26,3	cyclictest	1762482	-21	kworker/u8:0+events_unbound	00:29:22	2
1561119	99	30	26,3	cyclictest	1697426	-21	cron	21:25:00	0
1561119	99	30	21,7	cyclictest	1802410	-21	diskstats	23:14:09	0
1561130	99	29	25,3	cyclictest	1643640	-21	aten2_r5power_p	20:34:09	2
1561126	99	29	25,3	cyclictest	1697455	-21	kworker/u8:1+flush-8:0	21:44:10	1
1561126	99	29	25,3	cyclictest	1697455	-21	kworker/u8:1+flush-8:0	21:44:10	1
1561126	99	29	24,4	cyclictest	1851286	-21	kworker/u8:3+events_unbound	00:09:14	1
1561126	99	29	19,8	cyclictest	1880387	-21	ntpq	00:29:20	1
1561119	99	29	25,3	cyclictest	1379172	-21	kworker/u8:3+flush-8:0	19:49:24	0
1561119	99	29	22,5	cyclictest	1561303	-21	kworker/u8:1+flush-8:0	19:34:10	0
1561119	99	29	21,6	cyclictest	278	-21	systemd-journal	20:40:37	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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