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 Wed Jun 10, 2026 12:44:06)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2209738	99	40	35,4	cyclictest	335557	-21	systemd-journal	10:55:00	0
2209741	99	39	33,4	cyclictest	2526596	-21	latency_hist	12:15:01	1
2209746	99	38	34,3	cyclictest	2432098	-21	kworker/u8:1+flush-259:0	11:25:21	2
2209746	99	38	34,3	cyclictest	2365011	-21	kworker/u8:2+flush-259:0	10:25:00	2
2209738	99	38	1,35	cyclictest	1	-21	systemd	10:10:00	0
2209741	99	36	30,4	cyclictest	335557	-21	systemd-journal	10:52:34	1
2209738	99	35	28,5	cyclictest	2327535	-21	ntpq	09:00:19	0
2209738	99	35	27,5	cyclictest	2256435	-21	latency_hist	07:55:01	0
2209738	99	35	0,33	cyclictest	1	-21	systemd	10:05:00	0
2209738	99	35	0,33	cyclictest	1	-21	systemd	10:05:00	0
2209746	99	34	31,2	cyclictest	2277013	-21	kworker/u8:0+flush-259:0	09:20:19	2
2209748	99	33	28,3	cyclictest	2230712	-21	latency_hist	07:30:00	3
2209746	99	33	29,3	cyclictest	2365011	-21	kworker/u8:2+flush-259:0	10:30:21	2
2209746	99	33	29,3	cyclictest	2282362	-21	kworker/u8:2+events_unbound	08:25:17	2
2209738	99	33	26,5	cyclictest	2483580	-21	ntpq	11:30:21	0
2209746	99	32	28,3	cyclictest	2365011	-21	kworker/u8:2+flush-259:0	09:45:20	2
2209746	99	31	27,3	cyclictest	2354441	-21	kworker/u8:1+flush-259:0	09:30:16	2
2209746	99	31	27,3	cyclictest	2225575	-21	kworker/u8:1+flush-259:0	07:30:21	2
2209738	99	31	22,6	cyclictest	335557	-21	systemd-journal	11:54:59	0
2209748	99	30	26,3	cyclictest	2375288	-21	kworker/u8:4+flush-259:0	10:10:00	3
2209746	99	30	27,2	cyclictest	2365011	-21	kworker/u8:2+events_unbound	10:10:14	2
2209746	99	29	26,2	cyclictest	2495499	-21	kworker/u8:0+flush-259:0	11:45:18	2
2209746	99	29	26,2	cyclictest	2432098	-21	kworker/u8:1+flush-259:0	11:30:18	2
2209746	99	29	25,3	cyclictest	2390810	-21	kworker/u8:0+flush-259:0	10:40:24	2
2209738	99	29	25,2	cyclictest	2287581	-21	apt-get	08:25:11	0
2209748	99	28	22,5	cyclictest	2390773	-21	latency_hist	10:05:00	3
2209748	99	28	22,5	cyclictest	2390773	-21	latency_hist	10:05:00	3
2209746	99	28	25,2	cyclictest	2432098	-21	kworker/u8:1+flush-259:0	11:15:00	2
2209746	99	28	23,3	cyclictest	2432098	-21	kworker/u8:1+flush-259:0	12:00:00	2
2209746	99	28	21,4	cyclictest	335557	-21	systemd-journal	12:37:20	2
2209741	99	28	24,3	cyclictest	2406472	-21	/usr/sbin/munin	10:20:13	1
2209741	99	28	24,3	cyclictest	2246418	-21	/usr/sbin/munin	07:45:15	1
2209741	99	28	24,3	cyclictest	2246418	-21	/usr/sbin/munin	07:45:14	1
2209738	99	28	21,5	cyclictest	2447985	-21	diskstats	11:00:14	0
2209738	99	28	21,5	cyclictest	2265778	-21	ntpq	08:00:21	0
2209748	99	27	21,4	cyclictest	2220534	-21	cat	07:20:01	3
2209746	99	27	23,3	cyclictest	2516329	-21	kworker/u8:3+events_unbound	12:25:18	2
2209746	99	27	23,3	cyclictest	2432098	-21	kworker/u8:1+events_unbound	12:20:14	2
2209746	99	27	23,3	cyclictest	2432098	-21	kworker/u8:1+events_unbound	12:20:13	2
2209746	99	27	23,3	cyclictest	2292482	-21	kworker/u8:3+flush-259:0	09:35:22	2
2209746	99	27	22,4	cyclictest	2272113	-21	apt-get	08:10:10	2
2209746	99	27	22,3	cyclictest	2338502	-21	kworker/u8:2+events_unbound	09:25:16	2
2209738	99	27	21,4	cyclictest	335557	-21	systemd-journal	12:09:33	0
2209748	99	26	20,4	cyclictest	2292457	-21	latency_hist	08:30:01	3
2209746	99	26	23,2	cyclictest	2241039	-21	kworker/u8:3+flush-259:0	08:00:15	2
2209746	99	26	19,2	cyclictest	2505058	-21	kworker/u8:2+events_unbound	12:00:21	2
2209738	99	26	20,4	cyclictest	2256857	-21	diskstats	07:55:12	0
2209746	99	25	22,2	cyclictest	2277013	-21	kworker/u8:0+flush-259:0	08:20:21	2
2209746	99	25	22,2	cyclictest	2241039	-21	kworker/u8:3+events_unbound	07:46:36	2
2209746	99	25	22,2	cyclictest	2241039	-21	kworker/u8:3+events_unbound	07:46:35	2
2209746	99	24	21,2	cyclictest	2484534	-21	kworker/u8:3+flush-259:0	11:35:17	2
2209746	99	24	21,2	cyclictest	2292482	-21	kworker/u8:3+flush-259:0	08:50:11	2
2209746	99	24	20,3	cyclictest	2266712	-21	kworker/u8:1+events_unbound	08:09:34	2
2209746	99	24	17,5	cyclictest	2447552	-21	awk	11:00:00	2
2209738	99	24	18,4	cyclictest	2537202	-21	/usr/sbin/munin	12:25:12	0
2209738	99	24	18,4	cyclictest	2301868	-21	ntpq	08:35:21	0
2209746	99	23	20,2	cyclictest	2277013	-21	kworker/u8:0+flush-259:0	09:05:16	2
2209738	99	23	20,2	cyclictest	2292482	-21	kworker/u8:3+flush-259:0	08:40:10	0
2209746	99	22	7,7	cyclictest	2370160	-21	basename	09:45:00	2
2209746	99	22	19,2	cyclictest	2292482	-21	kworker/u8:3+flush-259:0	08:55:21	2
2209746	99	22	18,3	cyclictest	2542796	-21	kworker/u8:2+flush-259:0	12:30:18	2
2209746	99	22	18,3	cyclictest	2292482	-21	kworker/u8:3+events_unbound	09:10:25	2
2209746	99	22	18,3	cyclictest	2277013	-21	kworker/u8:0+flush-259:0	09:15:12	2
2209741	99	22	17,4	cyclictest	335557	-21	systemd-journal	10:10:00	1
2209741	99	22	16,4	cyclictest	335557	-21	systemd-journal	08:25:01	1
2209748	99	21	19,1	cyclictest	0	-21	swapper/3	12:25:00	3
2209748	99	21	19,1	cyclictest	0	-21	swapper/3	12:25:00	3
2209748	99	21	17,3	cyclictest	2479614	-21	apt-get	11:30:11	3
2209746	99	21	18,2	cyclictest	2516329	-21	kworker/u8:3+events_unbound	12:15:17	2
2209746	99	21	17,3	cyclictest	2292482	-21	kworker/u8:3+flush-259:0	09:00:21	2
2209741	99	21	16,4	cyclictest	2547319	-21	latency_hist	12:35:01	1
2209741	99	21	14,6	cyclictest	0	-21	swapper/1	08:20:00	1
2209741	99	21	10,9	cyclictest	2390755	-21	cron	10:05:00	1
2209741	99	21	10,9	cyclictest	2390755	-21	cron	10:05:00	1
2209738	99	21	17,3	cyclictest	2339477	-21	apt-get	09:15:10	0
2209738	99	21	16,4	cyclictest	2396163	-21	kworker/u8:3+flush-259:0	10:20:15	0
2209738	99	21	14,5	cyclictest	2353834	-21	ntpq	09:25:20	0
2209748	99	20	15,4	cyclictest	335557	-21	systemd-journal	10:40:00	3
2209748	99	20	15,4	cyclictest	2500399	-21	apt-get	11:49:59	3
2209746	99	20	17,2	cyclictest	2396162	-21	kworker/u8:1+events_unbound	10:15:24	2
2209746	99	20	17,2	cyclictest	2375288	-21	kworker/u8:4+events_unbound	09:56:35	2
2209746	99	20	16,3	cyclictest	2432098	-21	kworker/u8:1+events_unbound	11:20:23	2
2209746	99	20	16,3	cyclictest	2365011	-21	kworker/u8:2+flush-259:0	09:50:15	2
2209741	99	20	17,2	cyclictest	2266693	-21	sh	08:05:00	1
2209738	99	20	16,3	cyclictest	2354441	-21	kworker/u8:1+flush-259:0	09:34:45	0
2209738	99	20	14,4	cyclictest	2516329	-21	kworker/u8:3+flush-259:0	12:30:16	0
2209748	99	19	16,2	cyclictest	2468294	-21	gpgv	11:20:01	3
2209748	99	19	16,2	cyclictest	2220012	-21	idleruntime-cro	07:20:00	3
2209748	99	19	15,3	cyclictest	2971	-21	cron	10:55:00	3
2209748	99	19	13,4	cyclictest	2505990	-21	latency_hist	11:55:00	3
2209746	99	19	16,2	cyclictest	2516329	-21	kworker/u8:3+flush-259:0	12:05:15	2
2209746	99	19	16,2	cyclictest	2421797	-21	kworker/u8:3+flush-259:0	10:50:17	2
2209746	99	19	16,2	cyclictest	2396162	-21	kworker/u8:1+events_unbound	10:29:53	2
2209746	99	19	16,2	cyclictest	2365011	-21	kworker/u8:2+events_unbound	10:01:36	2
2209746	99	19	16,2	cyclictest	2365011	-21	kworker/u8:2+events_unbound	10:01:36	2
2209746	99	19	15,3	cyclictest	2516329	-21	kworker/u8:3+events_unbound	12:13:34	2
2209746	99	19	15,3	cyclictest	155503	-21	kworker/u8:0+flush-259:0	07:40:10	2
2209746	99	19	14,3	cyclictest	2375288	-21	kworker/u8:4+events_unbound	10:05:19	2
2209746	99	19	13,4	cyclictest	2468295	-21	apt-key	11:20:01	2
2209741	99	19	16,2	cyclictest	2531813	-21	turbostat.cron	12:20:00	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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