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 Sun Feb 22, 2026 00:44:13)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
507760	2	336	0,2	sleep3	47	1	rcuc/3	23:26:04	3
471163	2	222	0,4	sleep3	584	-21	kworker/3:2-events	22:50:00	3
429015	2	204	0,2	sleep3	584	-21	kworker/3:2-events	22:06:07	3
535858	2	202	0,2	sleep3	48	1	ktimers/3	23:55:01	3
315805	2	78	0,1	sleep1	315810	-21	tr	20:11:05	1
250995	99	60	48,9	cyclictest	540809	-40	logrotate	00:00:00	0
250999	99	51	45,4	cyclictest	258038	-21	kworker/u8:2+events_unbound	20:16:14	1
250999	99	51	43,6	cyclictest	483903	-21	kworker/u8:0+events_unbound	23:01:11	1
250999	99	50	44,4	cyclictest	486360	-21	kworker/u8:4+events_unbound	23:06:14	1
250999	99	50	44,4	cyclictest	337181	-21	kworker/u8:0+events_unbound	22:31:15	1
250999	99	49	41,5	cyclictest	565563	-21	latency_hist	00:25:00	1
375197	2	48	0,3	sleep3	584	-21	kworker/3:2+events	21:11:06	3
251005	99	46	42,3	cyclictest	371818	-21	kworker/u8:3+events_unbound	21:46:14	2
493889	2	45	0,1	sleep1	493894	-21	cut	23:11:05	1
370968	2	45	0,5	sleep2	0	-21	swapper/2	21:06:11	2
250995	99	45	37,6	cyclictest	426386	-21	latency_hist	22:05:01	0
250999	99	43	37,4	cyclictest	545485	-21	kworker/u8:2+flush-8:0	00:16:05	1
250995	99	43	34,6	cyclictest	520774	-21	latency_hist	23:40:01	0
246206	2	43	4,33	sleep1	0	-21	swapper/1	19:05:42	1
250999	99	42	32,8	cyclictest	511171	-21	/usr/sbin/munin	23:31:09	1
250999	99	41	35,4	cyclictest	455848	-21	kworker/u8:1+flush-8:0	22:56:01	1
251005	99	40	36,3	cyclictest	531590	-21	kworker/u8:1+events_unbound	00:31:10	2
250999	99	40	35,3	cyclictest	258038	-21	kworker/u8:2+events_unbound	20:01:15	1
250999	99	40	35,3	cyclictest	241050	-21	kworker/u8:3+events_unbound	19:16:06	1
250999	99	40	32,5	cyclictest	332253	-21	latency_hist	20:30:00	1
250995	99	40	29,8	cyclictest	574639	-21	ntpq	00:31:12	0
250999	99	39	34,3	cyclictest	337181	-21	kworker/u8:0+events_unbound	22:25:57	1
250999	99	39	33,4	cyclictest	371818	-21	kworker/u8:3+events_unbound	23:21:13	1
250999	99	39	32,5	cyclictest	337181	-21	kworker/u8:0+flush-8:0	22:16:02	1
250995	99	39	31,6	cyclictest	298228	-21	diskstats	19:55:59	0
250999	99	38	32,4	cyclictest	347397	-21	apt-get	20:45:57	1
250999	99	38	30,6	cyclictest	391591	-21	latency_hist	21:30:01	1
250995	99	38	28,8	cyclictest	465037	-21	ntpq	22:41:10	0
251005	99	37	32,4	cyclictest	241050	-21	kworker/u8:3+events_unbound	19:16:08	2
250999	99	37	32,3	cyclictest	258038	-21	kworker/u8:2+flush-8:0	20:21:04	1
250999	99	37	32,3	cyclictest	258038	-21	kworker/u8:2+flush-8:0	20:21:04	1
250999	99	37	31,4	cyclictest	371818	-21	kworker/u8:3+events_unbound	21:16:09	1
250999	99	37	0,34	cyclictest	460989	-21	true	22:40:00	1
250995	99	37	28,7	cyclictest	274	-21	systemd-journal	19:15:00	0
251005	99	36	27,7	cyclictest	466349	-21	cp	22:45:01	2
250999	99	36	28,6	cyclictest	337181	-21	kworker/u8:0+flush-8:0	22:06:16	1
250995	99	36	24,9	cyclictest	296830	-21	ntpq	19:51:10	0
251005	99	35	28,2	cyclictest	16	1	rcu_preempt	20:46:07	2
250999	99	35	29,4	cyclictest	347339	-21	kworker/u8:1+flush-8:0	21:06:04	1
250999	99	35	26,6	cyclictest	312486	-21	latency_hist	20:10:01	1
250995	99	35	27,6	cyclictest	541389	-21	diskstats	00:00:59	0
250995	99	35	2,27	cyclictest	241053	-21	kworker/0:0+events	20:45:57	0
251005	99	34	30,3	cyclictest	496044	-21	kworker/u8:0+events_unbound	23:35:01	2
251005	99	34	28,4	cyclictest	565584	-21	kworker/u8:0+events_unbound	00:35:01	2
250995	99	34	26,6	cyclictest	460055	-21	ntpq	22:36:09	0
250995	99	34	24,8	cyclictest	441755	-21	diskstats	22:21:00	0
250995	99	34	24,8	cyclictest	268311	-21	munin-node	19:25:56	0
251005	99	33	29,3	cyclictest	199319	-21	kworker/u8:1+events_unbound	19:31:32	2
250999	99	33	28,4	cyclictest	241050	-21	kworker/u8:3+events_unbound	19:36:12	1
250999	99	33	26,5	cyclictest	500096	-21	ntpq	23:16:09	1
250999	99	33	26,5	cyclictest	357209	-21	kworker/u8:2+flush-8:0	22:11:16	1
250999	99	33	23,4	cyclictest	241050	-21	kworker/u8:3+events_unbound	19:40:59	1
250995	99	33	27,4	cyclictest	501589	-21	grep	23:21:00	0
250995	99	33	1,30	cyclictest	241053	-21	kworker/0:0+events	23:15:57	0
251005	99	32	28,3	cyclictest	241050	-21	kworker/u8:3+events_unbound	19:11:31	2
250999	99	32	26,5	cyclictest	241050	-21	kworker/u8:3+flush-8:0	19:51:10	1
250999	99	32	25,5	cyclictest	337181	-21	kworker/u8:0+flush-8:0	22:01:02	1
250999	99	32	25,5	cyclictest	302201	-21	grep	19:56:15	1
250999	99	32	25,5	cyclictest	258038	-21	kworker/u8:2+events_unbound	20:36:10	1
250999	99	32	24,6	cyclictest	416523	-21	latency_hist	21:55:01	1
250999	99	32	24,6	cyclictest	199319	-21	kworker/u8:1+events_unbound	19:30:59	1
250999	99	32	23,7	cyclictest	274	-21	systemd-journal	23:55:00	1
250995	99	32	8,19	cyclictest	241053	-21	kworker/0:0+events	23:25:37	0
250995	99	32	27,3	cyclictest	267783	-21	latency_hist	19:25:01	0
246500	2	32	2,13	sleep0	0	-21	swapper/0	19:06:01	0
251005	99	31	23,6	cyclictest	274	-21	systemd-journal	19:40:00	2
251005	99	31	22,2	cyclictest	16	1	rcu_preempt	20:31:03	2
250999	99	31	26,3	cyclictest	199319	-21	kworker/u8:1+events_unbound	19:11:03	1
250999	99	31	25,4	cyclictest	241050	-21	kworker/u8:3+events_unbound	20:51:14	1
250999	99	31	24,5	cyclictest	357209	-21	kworker/u8:2+events_unbound	21:00:57	1
250995	99	31	27,3	cyclictest	475997	-21	cron	22:55:00	0
250995	99	31	2,28	cyclictest	241053	-21	kworker/0:0+events	20:41:09	0
250995	99	31	2,27	cyclictest	545803	-21	kworker/0:3+events	00:35:57	0
250995	99	31	1,29	cyclictest	241053	-21	kworker/0:0+events	21:46:13	0
250995	99	31	1,28	cyclictest	241053	-21	kworker/0:0+events	21:55:57	0
250995	99	31	1,24	cyclictest	241053	-21	kworker/0:0+events	19:30:05	0
289951	2	30	0,2	sleep2	0	-21	swapper/2	19:46:06	2
250999	99	30	24,5	cyclictest	337181	-21	kworker/u8:0+events_unbound	21:21:00	1
250999	99	30	24,4	cyclictest	536149	-21	apt-get	23:55:56	1
250999	99	30	24,4	cyclictest	337181	-21	kworker/u8:0+events_unbound	21:36:02	1
250999	99	30	22,6	cyclictest	337181	-21	kworker/u8:0+flush-8:0	20:56:11	1
250995	99	30	9,20	cyclictest	241053	-21	kworker/0:0+events	20:05:57	0
250995	99	30	7,18	cyclictest	241053	-21	kworker/0:0+events	20:10:30	0
250995	99	30	3,26	cyclictest	241053	-21	kworker/0:0+events	20:16:09	0
250995	99	30	25,4	cyclictest	258038	-21	kworker/u8:2+flush-8:0	20:21:14	0
250995	99	30	25,4	cyclictest	258038	-21	kworker/u8:2+flush-8:0	20:21:13	0
250995	99	30	2,27	cyclictest	241053	-21	kworker/0:0+events	21:51:09	0
250995	99	30	2,26	cyclictest	241053	-21	kworker/0:0+events	23:06:05	0
250995	99	30	20,8	cyclictest	375911	-21	ntpq	21:11:09	0
251005	99	29	25,3	cyclictest	357209	-21	kworker/u8:2+events_unbound	22:13:21	2
250999	99	29	25,2	cyclictest	516054	-21	kworker/u8:2+events_unbound	23:36:10	1
250999	99	29	24,4	cyclictest	258038	-21	kworker/u8:2+flush-8:0	19:26:06	1
250999	99	29	24,3	cyclictest	576723	-21	kthreadcore	00:36:04	1
250999	99	29	24,3	cyclictest	241050	-21	kworker/u8:3+flush-8:0	19:21:07	1
250999	99	29	23,4	cyclictest	357209	-21	kworker/u8:2+flush-8:0	21:41:19	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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