OSADL QA Farm on Real-time of Mainline Linux

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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 Thu Jun 11, 2026 00:44:15)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3250281	2	75	0,4	chrt	0	-21	swapper/1	23:35:36	1
2982887	99	62	40,20	cyclictest	3227216	-21	ntpq	23:10:40	0
2982887	99	60	36,21	cyclictest	3083455	-21	ntpq	20:45:41	0
3094447	2	58	0,5	chrt	0	-21	swapper/0	21:00:01	0
2982889	99	57	47,7	cyclictest	3104355	-21	kworker/u8:1+flush-8:0	21:25:43	1
2982889	99	57	46,7	cyclictest	3009492	-21	kworker/u8:1+flush-8:0	19:45:42	1
2982887	99	55	34,18	cyclictest	3193472	-21	latency_hist	22:40:01	0
2982889	99	53	46,5	cyclictest	2999896	-21	kworker/u8:0+events_unbound	19:40:43	1
2982889	99	52	45,5	cyclictest	2999896	-21	kworker/u8:0+flush-8:0	20:45:44	1
2982889	99	51	46,4	cyclictest	3104355	-21	kworker/u8:1+flush-8:0	21:15:47	1
2982889	99	51	41,7	cyclictest	2999896	-21	kworker/u8:0+flush-8:0	21:05:45	1
2982889	99	49	42,5	cyclictest	1606356	-21	kworker/u8:0+events_unbound	19:10:41	1
2982889	99	49	41,6	cyclictest	3069531	-21	kworker/u8:2+flush-8:0	21:00:41	1
2989049	2	47	0,3	sleep3	75	-21	kworker/3:1-events	19:15:02	3
2982889	99	47	42,4	cyclictest	2972922	-21	kworker/u8:3+flush-8:0	23:55:41	1
2982889	99	47	42,3	cyclictest	3069531	-21	kworker/u8:2+flush-8:0	20:35:42	1
2982889	99	47	41,5	cyclictest	2972922	-21	kworker/u8:3+flush-8:0	20:55:41	1
2982889	99	47	38,7	cyclictest	3132957	-21	ntpq	21:35:40	1
2982889	99	46	41,4	cyclictest	2972922	-21	kworker/u8:3+events_unbound	23:20:44	1
2982889	99	46	39,5	cyclictest	3242717	-21	kworker/u8:2+events_unbound	00:35:42	1
2982889	99	46	39,5	cyclictest	3242717	-21	kworker/u8:2+events_unbound	00:35:41	1
2982889	99	46	34,9	cyclictest	1704890	-21	systemd-journal	22:15:53	1
2982887	99	46	36,8	cyclictest	3272028	-21	ntpq	23:55:41	0
2982889	99	45	40,3	cyclictest	3166137	-21	kworker/u8:1+events_unbound	22:40:31	1
2982889	99	45	39,4	cyclictest	3272906	-21	kworker/u8:1+events_unbound	00:05:41	1
2982889	99	45	39,4	cyclictest	3272906	-21	kworker/u8:1+events_unbound	00:05:40	1
2982889	99	45	38,5	cyclictest	3242717	-21	kworker/u8:2+flush-8:0	00:20:43	1
2982889	99	45	37,6	cyclictest	3272906	-21	kworker/u8:1+events_unbound	00:30:43	1
2982889	99	45	37,6	cyclictest	3009492	-21	kworker/u8:1+flush-8:0	20:20:31	1
2982889	99	45	34,8	cyclictest	3013858	-21	ntpq	19:35:42	1
2982887	99	45	34,9	cyclictest	2986795	-21	ntpq	19:10:40	0
2982887	99	45	1,41	cyclictest	583	-21	snmpd	22:05:42	0
2982889	99	44	40,3	cyclictest	3009492	-21	kworker/u8:1+events_unbound	19:50:47	1
2982889	99	44	40,3	cyclictest	3009492	-21	kworker/u8:1+events_unbound	19:50:47	1
2982889	99	44	39,4	cyclictest	3113724	-21	kworker/u8:2+flush-8:0	21:40:32	1
2982889	99	44	39,4	cyclictest	3113724	-21	kworker/u8:2+flush-8:0	21:40:32	1
2982889	99	44	39,4	cyclictest	2999896	-21	kworker/u8:0+events_unbound	20:05:51	1
2982889	99	44	39,4	cyclictest	2972922	-21	kworker/u8:3+flush-8:0	22:00:30	1
2982889	99	44	36,6	cyclictest	3198124	-21	kworker/u8:0+flush-8:0	23:05:42	1
2982889	99	44	34,8	cyclictest	3173727	-21	/usr/sbin/munin	22:20:43	1
2982889	99	43	39,3	cyclictest	2972922	-21	kworker/u8:3+flush-8:0	22:10:32	1
2982887	99	43	33,7	cyclictest	3064355	-21	apt-get	20:30:01	0
2982887	99	43	0,24	cyclictest	3108888	-21	sshd	21:12:53	0
2982889	99	42	35,5	cyclictest	3198124	-21	kworker/u8:0+events_unbound	23:00:41	1
2982889	99	42	34,6	cyclictest	3152789	-21	ntpq	21:55:41	1
2982889	99	41	36,4	cyclictest	3198124	-21	kworker/u8:0+events_unbound	23:15:44	1
2982889	99	41	35,4	cyclictest	3166137	-21	kworker/u8:1+events_unbound	22:35:41	1
2982887	99	41	31,7	cyclictest	3014731	-21	latency_hist	19:40:01	0
2982889	99	40	35,4	cyclictest	2972922	-21	kworker/u8:3+events_unbound	23:40:40	1
2982889	99	40	35,3	cyclictest	3113724	-21	kworker/u8:2+flush-8:0	21:45:42	1
2982889	99	40	34,4	cyclictest	3242717	-21	kworker/u8:2+events_unbound	23:30:49	1
2982889	99	40	34,4	cyclictest	2999896	-21	kworker/u8:0+events_unbound	20:10:47	1
2982889	99	40	34,4	cyclictest	2972922	-21	kworker/u8:3+events_unbound	22:50:45	1
2982889	99	40	32,6	cyclictest	3286884	-21	ntpq	00:10:42	1
2982887	99	40	19,18	cyclictest	1704890	-21	systemd-journal	19:45:00	0
2982889	99	39	33,4	cyclictest	3166137	-21	kworker/u8:1+flush-8:0	22:30:47	1
2982889	99	39	32,5	cyclictest	2972922	-21	kworker/u8:3+flush-8:0	23:50:44	1
2982889	99	39	32,5	cyclictest	2972922	-21	kworker/u8:3+flush-8:0	20:30:37	1
2982887	99	39	20,17	cyclictest	3100068	-21	sed	21:05:35	0
2982887	99	39	19,17	cyclictest	3238288	-21	apt-config	23:25:00	0
2982889	99	38	32,4	cyclictest	3113724	-21	kworker/u8:2+flush-8:0	21:30:41	1
2982889	99	38	32,4	cyclictest	3113724	-21	kworker/u8:2+events_unbound	21:20:42	1
2982889	99	38	28,8	cyclictest	3108159	-21	ntpq	21:10:43	1
2982887	99	37	2,29	cyclictest	2987935	-21	kworker/0:1+events	20:00:29	0
2982887	99	37	2,10	cyclictest	3278183	-21	taskset	00:05:29	0
2982887	99	37	2,10	cyclictest	3278183	-21	taskset	00:05:28	0
2982887	99	37	20,15	cyclictest	3055319	-21	irqcore	20:20:35	0
2982887	99	37	20,15	cyclictest	2989807	-21	cut	19:15:04	0
2982887	99	37	18,2	cyclictest	0	-21	swapper/0	22:35:00	0
2982887	99	37	18,17	cyclictest	3098821	-21	grep	21:00:48	0
2982887	99	37	17,2	cyclictest	0	-21	swapper/0	21:40:39	0
2982887	99	37	17,2	cyclictest	0	-21	swapper/0	21:40:39	0
2982887	99	37	15,3	cyclictest	0	-21	swapper/0	19:34:53	0
3160496	2	36	0,2	sleep3	48	1	ktimers/3	22:05:37	3
2982889	99	36	32,3	cyclictest	3009492	-21	kworker/u8:1+events_unbound	20:00:36	1
2982889	99	36	31,4	cyclictest	3198124	-21	kworker/u8:0+events_unbound	22:55:36	1
2982889	99	36	30,4	cyclictest	3242717	-21	kworker/u8:2+events_unbound	00:25:43	1
2982889	99	36	30,4	cyclictest	2972922	-21	kworker/u8:3+flush-8:0	20:15:43	1
2982887	99	36	2,9	cyclictest	589	-21	runrttasks	22:00:28	0
2982887	99	36	26,8	cyclictest	3266993	-21	ntpq	23:50:42	0
2982887	99	36	19,15	cyclictest	3088953	-21	unixbench_singl	20:50:49	0
2982887	99	36	17,3	cyclictest	3029835	-21	systemd-run	19:55:00	0
2982887	99	36	17,3	cyclictest	3029835	-21	systemd-run	19:55:00	0
2982887	99	36	17,2	cyclictest	0	-21	swapper/0	20:30:38	0
2982887	99	36	16,8	cyclictest	3048688	-21	ntpq	20:10:40	0
2982887	99	36	16,2	cyclictest	3203384	-21	turbostat.cron	22:50:00	0
2982887	99	36	15,3	cyclictest	0	-21	swapper/0	21:37:53	0
2982889	99	35	30,3	cyclictest	3207482	-21	kworker/u8:1+events_unbound	23:10:32	1
2982889	99	35	29,4	cyclictest	3273199	-21	apt-get	00:00:29	1
2982887	99	35	26,7	cyclictest	3114603	-21	diskstats	21:20:32	0
2982887	99	35	17,3	cyclictest	0	-21	swapper/0	00:10:31	0
2982889	99	34	30,3	cyclictest	3166137	-21	kworker/u8:1+flush-8:0	22:25:31	1
2982889	99	34	30,3	cyclictest	2999896	-21	kworker/u8:0+events_unbound	20:00:00	1
2982889	99	34	27,5	cyclictest	3242717	-21	kworker/u8:2+flush-8:0	00:15:42	1
2982889	99	34	27,5	cyclictest	3242717	-21	kworker/u8:2+flush-8:0	00:15:41	1
2982887	99	34	15,3	cyclictest	0	-21	swapper/0	00:00:07	0
2982887	99	34	14,2	cyclictest	0	-21	swapper/0	23:15:37	0
2982889	99	33	31,1	cyclictest	3207482	-21	kworker/u8:1+flush-8:0	23:25:45	1
2982889	99	33	29,3	cyclictest	2999896	-21	kworker/u8:0+events_unbound	20:40:29	1
2982889	99	33	29,3	cyclictest	2990143	-21	kworker/u8:2+events_unbound	19:25:35	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2019-05-28 - 00:17