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 #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 100 highest latencies:

System rackeslot4s.osadl.org (updated Sun Mar 01, 2026 00:44:05)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2146044	99	39	36,2	cyclictest	2250330	-21	kworker/u8:2+flush-259:0	22:50:21	3
2146039	99	37	31,4	cyclictest	2364224	-21	latency_hist	23:50:01	2
2146036	99	35	29,4	cyclictest	2301645	-21	latency_hist	22:50:01	1
2146044	99	33	30,2	cyclictest	2348836	-21	kworker/u8:2+flush-259:0	23:40:24	3
2146044	99	33	30,2	cyclictest	2164904	-21	kworker/u8:2+events_unbound	21:15:20	3
2146044	99	33	29,3	cyclictest	2191104	-21	kworker/u8:3+events_unbound	21:30:23	3
2146044	99	32	28,3	cyclictest	2379693	-21	kworker/u8:3+events_unbound	00:05:16	3
2146036	99	32	29,2	cyclictest	2348836	-21	kworker/u8:2+flush-259:0	00:00:24	1
2146034	99	32	29,2	cyclictest	2164904	-21	kworker/u8:2+flush-259:0	20:30:21	0
2146044	99	31	28,2	cyclictest	2250330	-21	kworker/u8:2+events_unbound	22:05:18	3
2146036	99	31	25,4	cyclictest	509	-21	rs:main		1
2146044	99	30	27,2	cyclictest	2250330	-21	kworker/u8:2+flush-259:0	22:10:24	3
2146036	99	30	26,3	cyclictest	2159781	-21	apt-get	19:45:10	1
2146044	99	29	26,2	cyclictest	2240014	-21	kworker/u8:1+flush-259:0	22:25:15	3
2146044	99	29	25,3	cyclictest	2240014	-21	kworker/u8:1+flush-259:0	22:45:20	3
2146039	99	29	22,5	cyclictest	2224565	-21	diskstats	21:35:14	2
2146044	99	28	25,2	cyclictest	2311746	-21	kworker/u8:3+events_unbound	23:20:17	3
2146044	99	28	25,2	cyclictest	2240014	-21	kworker/u8:1+flush-259:0	22:30:15	3
2146044	99	28	24,3	cyclictest	2240014	-21	kworker/u8:1+flush-259:0	23:05:01	3
2146044	99	28	24,3	cyclictest	2240014	-21	kworker/u8:1+flush-259:0	22:20:28	3
2146039	99	28	19,4	cyclictest	2399396	-21	ntpq	00:20:22	2
2146044	99	27	23,3	cyclictest	2379693	-21	kworker/u8:3+events_unbound	00:25:21	3
2146044	99	27	22,4	cyclictest	2411168	-21	cat	00:35:01	3
2146036	99	27	21,4	cyclictest	2285379	-21	ntpq	22:30:22	1
2146044	99	26	20,3	cyclictest	2164904	-21	kworker/u8:2+events_unbound	21:10:20	3
2146039	99	26	20,4	cyclictest	2208257	-21	latency_hist	21:20:01	2
2146036	99	26	23,2	cyclictest	2240014	-21	kworker/u8:1+events_unbound	22:15:23	1
2146036	99	26	23,2	cyclictest	2230945	-21	kworker/u8:0+flush-259:0	21:50:10	1
2146036	99	26	22,3	cyclictest	2379693	-21	kworker/u8:3+flush-259:0	00:25:24	1
2146036	99	26	22,3	cyclictest	2159543	-21	kworker/u8:3+flush-259:0	20:00:00	1
2146044	99	25	22,2	cyclictest	2240014	-21	kworker/u8:1+flush-259:0	23:35:15	3
2146044	99	25	20,3	cyclictest	2125584	-21	kworker/u8:0+flush-259:0	19:45:23	3
2146034	99	25	22,2	cyclictest	2348836	-21	kworker/u8:2+events_unbound	23:40:18	0
2146034	99	25	19,4	cyclictest	2159525	-21	latency_hist	19:45:00	0
2146044	99	24	21,2	cyclictest	2164904	-21	kworker/u8:2+events_unbound	20:15:18	3
2146036	99	24	21,2	cyclictest	2240014	-21	kworker/u8:1+flush-259:0	22:30:00	1
2146036	99	24	20,3	cyclictest	2164904	-21	kworker/u8:2+flush-259:0	21:25:24	1
2146036	99	24	19,3	cyclictest	2164904	-21	kworker/u8:2+flush-259:0	20:30:24	1
2146034	99	24	0,22	cyclictest	1	-21	systemd	21:16:29	0
2146044	99	23	20,2	cyclictest	2348836	-21	kworker/u8:2+flush-259:0	00:20:15	3
2146044	99	23	20,2	cyclictest	2230945	-21	kworker/u8:0+flush-259:0	21:45:20	3
2146044	99	23	20,2	cyclictest	2178229	-21	kworker/u8:3+events_unbound	20:30:27	3
2146044	99	23	19,3	cyclictest	2311746	-21	kworker/u8:3+events_unbound	23:10:16	3
2146044	99	23	19,3	cyclictest	2219011	-21	kworker/u8:4+flush-259:0	21:50:21	3
2146034	99	23	17,4	cyclictest	2230126	-21	diskstats	21:40:13	0
2146044	99	22	19,2	cyclictest	2348836	-21	kworker/u8:2+events_unbound	00:00:19	3
2146044	99	22	19,2	cyclictest	2250330	-21	kworker/u8:2+events_unbound	22:00:21	3
2146044	99	22	19,2	cyclictest	2191104	-21	kworker/u8:3+events_unbound	21:25:24	3
2146044	99	22	18,3	cyclictest	2348836	-21	kworker/u8:2+events_unbound	23:50:23	3
2146044	99	22	18,3	cyclictest	2240014	-21	kworker/u8:1+events_unbound	22:15:12	3
2146039	99	22	19,2	cyclictest	2165960	-21	idleruntime-cro	20:00:00	2
2146039	99	22	15,5	cyclictest	2333612	-21	/usr/sbin/munin	23:20:22	2
2146034	99	22	17,4	cyclictest	2307049	-21	apt-get	22:55:12	0
2146034	99	22	15,5	cyclictest	2202212	-21	ntpq	21:10:16	0
2146044	99	21	18,2	cyclictest	2240014	-21	kworker/u8:1+events_unbound	23:30:15	3
2146036	99	21	17,3	cyclictest	2311746	-21	kworker/u8:3+flush-259:0	23:25:18	1
2146036	99	21	17,3	cyclictest	2250330	-21	kworker/u8:2+events_unbound	22:40:15	1
2146034	99	21	17,3	cyclictest	500	-21	systemd-logind	20:15:00	0
2146034	99	21	17,3	cyclictest	2146009	-21	kworker/u8:2+flush-259:0	19:15:01	0
2146044	99	20	17,2	cyclictest	2191104	-21	kworker/u8:3+flush-259:0	21:35:17	3
2146044	99	20	16,3	cyclictest	2250330	-21	kworker/u8:2+events_unbound	22:35:29	3
2146044	99	20	16,3	cyclictest	2164904	-21	kworker/u8:2+events_unbound	21:00:21	3
2146039	99	20	17,2	cyclictest	2971	-21	cron	20:05:00	2
2146039	99	20	17,2	cyclictest	2158224	-21	idleruntime-cro	19:35:00	2
2146034	99	20	13,5	cyclictest	2245393	-21	apt-get	21:55:10	0
2146044	99	19	16,2	cyclictest	2306408	-21	kworker/u8:0+events_unbound	23:05:18	3
2146044	99	19	15,3	cyclictest	2164904	-21	kworker/u8:2+flush-259:0	21:20:23	3
2146039	99	19	13,5	cyclictest	2164904	-21	kworker/u8:2+flush-259:0	20:45:17	2
2146039	99	19	13,4	cyclictest	2348814	-21	latency_hist	23:35:01	2
2146039	99	19	13,4	cyclictest	2185183	-21	cat	20:40:02	2
2146039	99	19	12,5	cyclictest	2275025	-21	ntpq	22:20:24	2
2146039	99	19	11,5	cyclictest	2255410	-21	latency_hist	22:05:00	2
2146036	99	19	16,2	cyclictest	2240014	-21	kworker/u8:1+events_unbound	22:50:15	1
2146036	99	19	15,3	cyclictest	2271101	-21	apt-get	22:20:14	1
2146036	99	19	15,3	cyclictest	2240014	-21	kworker/u8:1+events_unbound	21:55:23	1
2146036	99	19	15,3	cyclictest	2164904	-21	kworker/u8:2+events_unbound	21:00:23	1
2146036	99	19	14,4	cyclictest	252	-21	systemd-journal	20:14:29	1
2146036	99	19	14,4	cyclictest	2191104	-21	kworker/u8:3+flush-259:0	21:30:15	1
2146036	99	19	13,4	cyclictest	2146893	-21	apt-get	19:15:13	1
2146034	99	19	14,3	cyclictest	2338776	-21	apt-get	23:25:11	0
2146044	99	18	15,2	cyclictest	2250330	-21	kworker/u8:2+events_unbound	22:40:20	3
2146044	99	18	15,2	cyclictest	2164904	-21	kworker/u8:2+flush-259:0	20:45:21	3
2146044	99	18	15,2	cyclictest	2125584	-21	kworker/u8:0+flush-259:0	19:15:24	3
2146044	99	18	14,3	cyclictest	2348836	-21	kworker/u8:2+events_unbound	00:16:51	3
2146039	99	18	14,3	cyclictest	2165308	-21	idleruntime-cro	19:55:00	2
2146039	99	18	14,2	cyclictest	0	-21	swapper/2	22:39:59	2
2146036	99	18	15,2	cyclictest	2348836	-21	kworker/u8:2+events_unbound	00:20:23	1
2146036	99	18	14,3	cyclictest	2240014	-21	kworker/u8:1+flush-259:0	23:30:19	1
2146036	99	18	12,4	cyclictest	2410680	-21	gpgv	00:34:59	1
2146036	99	18	11,5	cyclictest	252	-21	systemd-journal	19:35:00	1
2146034	99	18	16,1	cyclictest	2306772	-21	cron	22:55:00	0
2146034	99	18	14,2	cyclictest	0	-21	swapper/0	20:40:01	0
2146034	99	18	12,4	cyclictest	252	-21	systemd-journal	00:15:30	0
2146034	99	18	12,4	cyclictest	2152432	-21	latency_hist	19:25:00	0
2146034	99	18	11,6	cyclictest	252	-21	systemd-journal	00:00:00	0
2146044	99	17	13,3	cyclictest	2164904	-21	kworker/u8:2+events_unbound	20:55:00	3
2146044	99	17	12,4	cyclictest	2385047	-21	apt-get	00:10:11	3
2146044	99	17	11,2	cyclictest	2159543	-21	kworker/u8:3+flush-259:0	20:00:14	3
2146039	99	17	5,6	cyclictest	2374506	-21	apt	00:00:01	2
2146039	99	17	10,5	cyclictest	2250261	-21	cat	21:59:54	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


Access: public		Short link to this page
This page was last modified on 2021-09-01 - 00:34