OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

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 Jul 29, 2026 00:44:12)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1685508	2	73	0,2	chrt	583	-21	kworker/3:2+events	19:22:59	3
2001608	2	53	0,5	chrt	0	-21	swapper/1	00:37:59	1
1672446	99	49	40,6	cyclictest	1838324	-21	latency_hist	21:55:00	1
1672442	99	48	39,6	cyclictest	1672612	-21	base64	19:10:01	0
1672442	99	47	41,4	cyclictest	1947703	-21	kworker/u8:3+flush-8:0	23:58:11	0
1672442	99	46	38,5	cyclictest	1822987	-21	latency_hist	21:40:01	0
1672442	99	45	35,7	cyclictest	278	-21	systemd-journal	22:30:01	0
1672442	99	44	38,4	cyclictest	1957223	-21	kworker/u8:1+events_unbound	00:05:01	0
1672442	99	44	36,6	cyclictest	1763864	-21	kworker/u8:0+flush-8:0	21:18:08	0
1672446	99	43	33,7	cyclictest	278	-21	systemd-journal	22:25:00	1
1672442	99	43	37,5	cyclictest	1689287	-21	kworker/u8:3+events_unbound	20:17:59	0
1672442	99	41	36,4	cyclictest	1888310	-21	kworker/u8:3+events_unbound	22:52:59	0
1672442	99	41	34,5	cyclictest	1763864	-21	kworker/u8:0+flush-8:0	21:53:10	0
1672442	99	40	35,4	cyclictest	1662580	-21	kworker/u8:2+flush-8:0	19:53:09	0
1672442	99	40	35,4	cyclictest	1662580	-21	kworker/u8:2+events_unbound	20:38:07	0
1672446	99	39	29,7	cyclictest	1684306	-21	latency_hist	19:20:00	1
1672442	99	39	34,3	cyclictest	1652333	-21	kworker/u8:1+events_unbound	19:15:04	0
1672442	99	39	33,4	cyclictest	1833615	-21	kworker/u8:3+flush-8:0	22:23:00	0
1672442	99	39	32,5	cyclictest	1803460	-21	kworker/u8:1+flush-8:0	21:48:04	0
1672442	99	38	33,4	cyclictest	1763864	-21	kworker/u8:0+flush-8:0	22:13:08	0
1672442	99	38	0,35	cyclictest	1977431	-21	true	00:15:00	0
1672446	99	37	28,6	cyclictest	1743612	-21	latency_hist	20:20:00	1
1672442	99	37	32,3	cyclictest	1662580	-21	kworker/u8:2+flush-8:0	19:23:00	0
1672446	99	36	30,4	cyclictest	1763864	-21	kworker/u8:0+flush-8:0	20:47:54	1
1672442	99	36	30,4	cyclictest	1947703	-21	kworker/u8:3+events_unbound	23:48:06	0
1672442	99	36	30,4	cyclictest	1947703	-21	kworker/u8:3+events_unbound	23:48:06	0
1672448	99	35	25,7	cyclictest	1758449	-21	apt	20:35:00	2
1672448	99	35	24,8	cyclictest	1768617	-21	awk	20:45:00	2
1672446	99	35	30,3	cyclictest	1778657	-21	latency_hist	20:55:01	1
1672446	99	35	28,4	cyclictest	1652333	-21	kworker/u8:1+flush-8:0	19:27:54	1
1672442	99	35	30,3	cyclictest	1932857	-21	kworker/u8:2+events_unbound	23:52:57	0
1672442	99	35	30,3	cyclictest	1893300	-21	kworker/u8:2+flush-8:0	22:57:58	0
1672446	99	34	29,3	cyclictest	1724076	-21	kworker/u8:0+flush-8:0	20:12:58	1
1672446	99	34	29,3	cyclictest	1724076	-21	kworker/u8:0+flush-8:0	20:12:57	1
1672446	99	34	28,4	cyclictest	1962819	-21	apt-get	00:02:49	1
1672446	99	34	26,5	cyclictest	1907885	-21	latency_hist	23:05:01	1
1672446	99	34	23,8	cyclictest	278	-21	systemd-journal	23:35:17	1
1672442	99	34	27,5	cyclictest	1729244	-21	apt-get	20:07:47	0
1672089	2	34	4,10	sleep1	0	-21	swapper/1	19:09:54	1
1672446	99	33	27,4	cyclictest	1933067	-21	apt-get	23:32:48	1
1672446	99	33	25,5	cyclictest	1662580	-21	kworker/u8:2+flush-8:0	19:43:06	1
1672442	99	33	27,4	cyclictest	1763864	-21	kworker/u8:0+flush-8:0	21:13:02	0
1672442	99	33	25,6	cyclictest	1753516	-21	latency_hist	20:30:01	0
1672446	99	32	27,3	cyclictest	1724842	-21	irqcore	20:02:55	1
1672446	99	32	26,4	cyclictest	1797458	-21	needreboot	21:13:00	1
1672446	99	32	22,7	cyclictest	1853173	-21	latency_hist	22:10:01	1
1672442	99	32	27,4	cyclictest	1763864	-21	kworker/u8:0+flush-8:0	21:43:03	0
1672442	99	32	27,3	cyclictest	1662580	-21	kworker/u8:2+events_unbound	19:37:55	0
1672446	99	31	25,4	cyclictest	1832405	-21	ntp_kernel_pll_	21:48:02	1
1672446	99	31	23,6	cyclictest	1672845	-21	/usr/sbin/munin	19:12:59	1
1672446	99	31	22,7	cyclictest	1922001	-21	ntpq	23:18:03	1
1672442	99	31	27,3	cyclictest	1877997	-21	kworker/u8:0+events_unbound	23:08:14	0
1672442	99	31	25,4	cyclictest	1883141	-21	kworker/u8:2+events_unbound	22:45:00	0
1672442	99	31	24,5	cyclictest	1699168	-21	latency_hist	19:35:01	0
1672446	99	30	25,3	cyclictest	1710211	-21	irqrtprio	19:47:56	1
1672446	99	30	24,4	cyclictest	1859284	-21	irqrtprio	22:17:56	1
1672446	99	30	23,5	cyclictest	1838790	-21	apt-get	21:57:51	1
1672446	99	30	21,7	cyclictest	1987520	-21	cp	00:25:00	1
1672442	99	30	26,3	cyclictest	1763864	-21	kworker/u8:0+flush-8:0	22:03:08	0
1672442	99	30	25,4	cyclictest	1803460	-21	kworker/u8:1+flush-8:0	21:23:06	0
1672442	99	30	25,3	cyclictest	1987482	-21	apt-key	00:25:00	0
1672442	99	30	25,3	cyclictest	1943926	-21	kthreadcore	23:42:58	0
1672446	99	29	20,7	cyclictest	1878135	-21	cron	22:35:00	1
1672442	99	29	25,3	cyclictest	1907099	-21	needreboot	23:03:01	0
1672442	99	29	25,3	cyclictest	1652333	-21	kworker/u8:1+flush-8:0	19:28:08	0
1672442	99	29	24,4	cyclictest	1833615	-21	kworker/u8:3+flush-8:0	22:28:09	0
1672442	99	29	23,4	cyclictest	1877997	-21	kworker/u8:0+events_unbound	23:13:00	0
1672448	99	28	19,7	cyclictest	1827943	-21	turbostat.cron	21:45:00	2
1672446	99	28	24,3	cyclictest	1988348	-21	cpuspeed_turbos	00:27:52	1
1672446	99	28	23,3	cyclictest	1952475	-21	systemd-run	23:50:00	1
1672446	99	28	23,3	cyclictest	1952475	-21	systemd-run	23:50:00	1
1672446	99	28	23,3	cyclictest	1733710	-21	sh	20:10:00	1
1672446	99	28	22,4	cyclictest	1955065	-21	kthreadcore	23:53:01	1
1672446	99	28	22,4	cyclictest	1887292	-21	needreboot	22:42:59	1
1672446	99	28	22,4	cyclictest	1788385	-21	cron	21:05:00	1
1672446	99	28	22,4	cyclictest	1782636	-21	needreboot	20:58:04	1
1672446	99	28	22,4	cyclictest	1768377	-21	unixbench_multi	20:43:09	1
1672446	99	28	22,4	cyclictest	1763864	-21	kworker/u8:0+flush-8:0	21:07:52	1
1672446	99	28	21,5	cyclictest	1982379	-21	latency_hist	00:20:01	1
1672446	99	28	21,4	cyclictest	1977407	-21	latency_hist	00:15:01	1
1672446	99	28	20,5	cyclictest	278	-21	systemd-journal	23:40:01	1
1672442	99	28	25,2	cyclictest	1942376	-21	kworker/u8:1+events_unbound	23:38:26	0
1672442	99	28	24,3	cyclictest	1947703	-21	kworker/u8:3+flush-8:0	00:27:55	0
1672442	99	28	23,4	cyclictest	1843305	-21	kworker/u8:1+flush-8:0	22:07:57	0
1672442	99	28	22,5	cyclictest	1662580	-21	kworker/u8:2+events_unbound	20:45:01	0
1672442	99	28	22,4	cyclictest	1772849	-21	ntp_kernel_pll_	20:48:03	0
1672442	99	28	22,4	cyclictest	1763864	-21	kworker/u8:0+flush-8:0	21:58:06	0
1672442	99	28	21,5	cyclictest	1833615	-21	kworker/u8:3+events_unbound	22:38:05	0
1672442	99	28	20,6	cyclictest	1818057	-21	latency_hist	21:35:01	0
1672442	99	28	20,6	cyclictest	1793306	-21	latency_hist	21:10:00	0
1672442	99	28	1,25	cyclictest	1758296	-21	sshd	20:33:17	0
1672448	99	27	23,2	cyclictest	1778258	-21	unixbench_multi	20:53:10	2
1672448	99	27	21,4	cyclictest	1728577	-21	unixbench_singl	20:03:08	2
1672448	99	27	17,7	cyclictest	1833134	-21	apt	21:50:01	2
1672446	99	27	22,3	cyclictest	1758449	-21	apt-get	20:35:00	1
1672446	99	27	21,4	cyclictest	1972259	-21	unixbench_multi	00:08:10	1
1672446	99	27	21,4	cyclictest	1844664	-21	kthreadcore	22:02:58	1
1672446	99	27	21,4	cyclictest	1804007	-21	fschecks_time	21:22:56	1
1672446	99	27	19,6	cyclictest	1763604	-21	cron	20:40:00	1
1672442	99	27	23,3	cyclictest	1662580	-21	kworker/u8:2+events_unbound	19:48:10	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


Access: public		Short link to this page
This page was last modified on 2019-05-28 - 00:17