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 #2, slot #7

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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack2slot7s.osadl.org (updated Sun Feb 22, 2026 07:55:08)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2720165	99	82	70,8	cyclictest	2726736	-21	kworker/u8:8+xprtiod	06:10:28	0
2720167	99	80	68,8	cyclictest	3543612	-21	sh	06:10:33	2
2720166	99	72	46,6	cyclictest	3543947	-21	sh	06:10:34	1
2720167	99	60	33,12	cyclictest	2720425	-21	kworker/u8:1-xprtiod	06:25:01	2
2720167	99	60	33,12	cyclictest	2720425	-21	kworker/u8:1-xprtiod	06:25:01	2
2720165	99	55	47,3	cyclictest	0	-21	swapper/0	05:50:32	0
2720167	99	54	37,14	cyclictest	3454198	-21	sh	06:06:57	2
2720167	99	54	28,23	cyclictest	2988947	-21	sh	05:41:55	2
2720166	99	54	44,7	cyclictest	2955774	-21	sh	05:40:31	1
2720167	99	52	45,3	cyclictest	0	-21	swapper/2	05:50:21	2
2720166	99	52	43,5	cyclictest	3606239	-21	systemd-run	06:25:01	1
2720166	99	52	43,5	cyclictest	3606239	-21	systemd-run	06:25:01	1
2720166	99	51	42,6	cyclictest	3028693	-21	execl	05:50:10	1
2720167	99	50	31,16	cyclictest	2948572	-21	awk	05:40:00	2
2720167	99	50	31,14	cyclictest	0	-21	swapper/2	05:59:28	2
2720166	99	50	37,10	cyclictest	3516199	-21	multi.sh	06:09:24	1
2720165	99	50	40,6	cyclictest	2953522	-21	sh	05:40:24	0
2720166	99	48	40,5	cyclictest	1	-21	systemd	05:30:01	1
2720166	99	47	39,5	cyclictest	2948562	-21	sh	05:40:00	1
2720165	99	47	34,10	cyclictest	3027997	-21	Run	05:45:31	0
2720167	99	46	0,40	cyclictest	0	-21	swapper/2	06:30:24	2
2720167	99	46	0,40	cyclictest	0	-21	swapper/2	06:30:24	2
2720165	99	46	31,4	cyclictest	3512704	-21	sh	06:09:16	0
2720167	99	45	36,6	cyclictest	2721957	-21	Run	05:15:01	2
2720167	99	45	36,6	cyclictest	2721957	-21	Run	05:15:01	2
2720167	99	45	26,16	cyclictest	3604718	-21	systemd-run	06:20:01	2
2720166	99	45	38,4	cyclictest	0	-21	swapper/1	05:49:50	1
2720167	99	44	1,40	cyclictest	2724039	-21	execl	05:20:21	2
2720167	99	43	2,34	cyclictest	3032685	-21	ntpq	06:00:24	2
2720167	99	42	2,34	cyclictest	3607079	-21	ntpq	06:25:19	2
2720167	99	42	19,20	cyclictest	3028443	-21	execl	05:49:36	2
2720165	99	42	33,6	cyclictest	2603664	-21	cups-browsed	05:20:25	0
2720167	99	41	1,35	cyclictest	2727696	-21	ntpq	05:30:19	2
2720167	99	41	1,35	cyclictest	2727696	-21	ntpq	05:30:19	2
2720166	99	41	16,18	cyclictest	27	1	ktimers/1	05:30:20	1
2720166	99	41	16,18	cyclictest	27	1	ktimers/1	05:30:20	1
2720166	99	40	32,5	cyclictest	2721980	-21	systemd-run	05:15:01	1
2720166	99	40	32,5	cyclictest	2721980	-21	systemd-run	05:15:01	1
2720166	99	40	1,28	cyclictest	2724039	-21	execl	05:20:26	1
2720166	99	38	30,5	cyclictest	0	-21	swapper/1	05:59:28	1
2720166	99	38	29,5	cyclictest	0	-21	swapper/1	06:40:00	1
2720167	99	37	2,29	cyclictest	3609735	-21	sshd	06:35:17	2
2720167	99	37	1,32	cyclictest	2726719	-21	fstime	05:27:36	2
2720166	99	37	28,6	cyclictest	3136144	-21	spawn	06:03:11	1
2720167	99	35	12,16	cyclictest	35	1	ktimers/2	05:15:19	2
2720167	99	35	0,32	cyclictest	2720434	-21	munin-run	05:10:01	2
2720166	99	35	28,4	cyclictest	2723653	-21	awk	05:20:00	1
2720165	99	35	30,2	cyclictest	0	-21	swapper/0	05:56:12	0
2720165	99	35	29,4	cyclictest	3605213	-21	fschecks_count	06:20:14	0
2720165	99	35	29,4	cyclictest	3605213	-21	fschecks_count	06:20:14	0
2720166	99	34	26,5	cyclictest	3604729	-21	systemd	06:20:02	1
2720165	99	34	30,2	cyclictest	0	-21	swapper/0	05:30:00	0
2720165	99	34	27,5	cyclictest	3610807	-21	latency_hist	06:40:02	0
2720165	99	34	27,4	cyclictest	3604689	-21	cut	06:20:01	0
2720167	99	32	0,28	cyclictest	2720173	-21	systemd-run	05:05:01	2
2720167	99	32	0,28	cyclictest	2720173	-21	systemd-run	05:05:01	2
2720165	99	32	4,23	cyclictest	3608665	-21	sshd	06:30:28	0
2720165	99	32	4,23	cyclictest	3608665	-21	sshd	06:30:28	0
2720165	99	32	25,5	cyclictest	3104100	-21	spawn	06:03:04	0
2720166	99	29	6,18	cyclictest	1165	-21	mta-sts-daemon	06:25:19	1
2720165	99	29	23,4	cyclictest	2728223	-21	grep	05:30:31	0
2720165	99	29	23,4	cyclictest	2728223	-21	grep	05:30:31	0
2720165	99	29	22,4	cyclictest	2723625	-21	whetstone-doubl	05:20:00	0
2720165	99	29	14,3	cyclictest	17	1	rcu_preempt	05:10:18	0
2720165	99	29	14,3	cyclictest	17	1	rcu_preempt	05:10:18	0
2720165	99	29	14,10	cyclictest	17	1	rcu_preempt	05:40:01	0
2720165	99	26	2,20	cyclictest	3606849	-21	irqstats	06:25:15	0
2720165	99	25	12,11	cyclictest	2710687	-21	kworker/u8:4-events_unbound	05:05:58	0
2720168	99	21	1,8	cyclictest	0	-21	swapper/3	05:20:20	3
2720166	99	21	3,11	cyclictest	577	-21	mta-sts-daemon	06:30:24	1
2720166	99	21	3,11	cyclictest	577	-21	mta-sts-daemon	06:30:24	1
2720165	99	21	8,3	cyclictest	17	1	rcu_preempt	05:05:01	0
2720165	99	21	8,3	cyclictest	17	1	rcu_preempt	05:05:01	0
2720168	99	19	3,8	cyclictest	0	-21	swapper/3	06:10:29	3
2720166	99	19	13,3	cyclictest	0	-21	swapper/1	05:08:27	1
2720166	99	19	12,4	cyclictest	1168	-21	mta-sts-daemon	05:05:02	1
2720166	99	19	12,4	cyclictest	1168	-21	mta-sts-daemon	05:05:02	1
2720168	99	18	3,7	cyclictest	0	-21	swapper/3	06:00:25	3
2720168	99	17	2,5	cyclictest	0	-21	swapper/3	06:35:23	3
2720168	99	16	2,9	cyclictest	0	-21	swapper/3	05:50:22	3
2720168	99	16	1,8	cyclictest	0	-21	swapper/3	05:45:22	3
2720168	99	15	3,7	cyclictest	0	-21	swapper/3	05:56:59	3
2720168	99	15	3,5	cyclictest	0	-21	swapper/3	05:25:24	3
2720168	99	15	2,6	cyclictest	0	-21	swapper/3	06:05:21	3
2720168	99	15	2,5	cyclictest	0	-21	swapper/3	06:30:23	3
2720168	99	15	2,5	cyclictest	0	-21	swapper/3	06:30:23	3
2720168	99	15	1,7	cyclictest	0	-21	swapper/3	05:15:19	3
2720168	99	15	1,4	cyclictest	0	-21	swapper/3	06:15:23	3
2720168	99	14	2,6	cyclictest	0	-21	swapper/3	05:30:18	3
2720168	99	14	2,6	cyclictest	0	-21	swapper/3	05:30:18	3
2720168	99	13	3,4	cyclictest	0	-21	swapper/3	05:35:21	3
2720168	99	13	2,8	cyclictest	0	-21	swapper/3	05:40:25	3
2720168	99	12	2,5	cyclictest	0	-21	swapper/3	05:10:00	3
2720168	99	12	1,6	cyclictest	0	-21	swapper/3	06:25:24	3
2720168	99	12	1,6	cyclictest	0	-21	swapper/3	05:10:17	3
2720168	99	12	1,6	cyclictest	0	-21	swapper/3	05:10:17	3
2720168	99	11	2,5	cyclictest	0	-21	swapper/3	06:20:30	3
2720168	99	11	2,5	cyclictest	0	-21	swapper/3	06:20:30	3
2720168	99	10	2,5	cyclictest	0	-21	swapper/3	05:05:01	3
2720168	99	10	2,5	cyclictest	0	-21	swapper/3	05:05:01	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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