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 Mon Dec 08, 2025 00:44:15)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2304494	99	68	64,3	cyclictest	2304650	-21	kworker/u8:3+events_unbound	19:15:03	2
2304491	99	60	48,9	cyclictest	282	-21	systemd-journal	20:31:07	1
2304488	99	58	48,7	cyclictest	2574354	-21	latency_hist	23:40:01	0
2501970	2	57	0,2	sleep3	586	-21	kworker/3:2-events	22:26:11	3
2304494	99	56	51,4	cyclictest	2247489	-21	kworker/u8:0+flush-8:0	19:11:26	2
2304494	99	56	51,3	cyclictest	2594672	-21	kworker/u8:4+flush-8:0	00:31:20	2
2304488	99	55	44,8	cyclictest	282	-21	systemd-journal	23:24:59	0
2304494	99	54	48,4	cyclictest	2474960	-21	kworker/u8:3+flush-8:0	00:11:20	2
2304494	99	53	48,4	cyclictest	2366230	-21	kworker/u8:3+events_unbound	20:40:01	2
2304491	99	53	43,8	cyclictest	2494392	-21	ntpq	22:16:16	1
2304491	99	52	45,5	cyclictest	2489432	-21	ntpq	22:11:15	1
2304491	99	51	41,7	cyclictest	2543801	-21	ntpq	23:06:20	1
2304488	99	50	39,9	cyclictest	282	-21	systemd-journal	00:10:00	0
2304491	99	49	38,9	cyclictest	2326200	-21	apt-get	19:30:00	1
2304488	99	49	41,6	cyclictest	282	-21	systemd-journal	23:30:00	0
2304494	99	47	42,4	cyclictest	2331409	-21	kworker/u8:1+events_unbound	20:20:00	2
2304491	99	47	37,7	cyclictest	282	-21	systemd-journal	20:37:08	1
2304488	99	47	37,7	cyclictest	282	-21	systemd-journal	23:15:00	0
2304491	99	46	36,8	cyclictest	2633376	-21	ntpq	00:36:16	1
2304488	99	46	38,5	cyclictest	2554570	-21	latency_hist	23:20:01	0
2304494	99	45	40,4	cyclictest	2366230	-21	kworker/u8:3+events_unbound	20:41:20	2
2304494	99	45	40,4	cyclictest	1461127	-21	kworker/u8:2+flush-8:0	20:31:20	2
2304494	99	44	38,4	cyclictest	2331409	-21	kworker/u8:1+events_unbound	20:20:04	2
2304491	99	44	38,5	cyclictest	2331409	-21	kworker/u8:1+flush-8:0	19:46:19	1
2304491	99	43	38,3	cyclictest	2366230	-21	kworker/u8:3+events_unbound	20:45:01	1
2304491	99	43	35,6	cyclictest	2406045	-21	/usr/sbin/munin	20:51:15	1
2304491	99	43	33,8	cyclictest	2424646	-21	ntpq	21:06:18	1
2304491	99	43	33,8	cyclictest	2424646	-21	ntpq	21:06:18	1
2304488	99	43	35,5	cyclictest	282	-21	systemd-journal	20:18:08	0
2304488	99	43	32,9	cyclictest	2394963	-21	ntpq	20:36:17	0
2609908	2	42	0,4	sleep2	37	1	rcuc/2	00:16:06	2
2304488	99	42	37,4	cyclictest	2474960	-21	kworker/u8:3+events_unbound	22:16:12	0
2304491	99	41	36,4	cyclictest	1461127	-21	kworker/u8:2+flush-8:0	19:36:07	1
2304491	99	41	33,6	cyclictest	282	-21	systemd-journal	22:35:01	1
2304488	99	40	36,3	cyclictest	2594672	-21	kworker/u8:4+events_unbound	00:16:20	0
2304488	99	40	32,5	cyclictest	2524951	-21	latency_hist	22:50:01	0
2304488	99	40	30,8	cyclictest	282	-21	systemd-journal	19:15:01	0
2304494	99	39	33,4	cyclictest	2534515	-21	kworker/u8:0+events_unbound	23:10:02	2
2304494	99	38	33,4	cyclictest	2331409	-21	kworker/u8:1+flush-8:0	21:56:24	2
2304491	99	38	31,5	cyclictest	282	-21	systemd-journal	20:49:17	1
2304491	99	38	30,6	cyclictest	2326765	-21	apt-get	19:31:05	1
2304488	99	38	28,8	cyclictest	2456007	-21	diskstats	21:41:05	0
2304488	99	38	2,31	cyclictest	2346471	-21	kworker/0:1+events	20:05:24	0
2304491	99	37	29,5	cyclictest	2375254	-21	ntpq	20:16:18	1
2304491	99	37	28,6	cyclictest	282	-21	systemd-journal	23:22:24	1
2304488	99	37	31,4	cyclictest	2445281	-21	kworker/u8:0+events_unbound	21:46:11	0
2304488	99	37	2,31	cyclictest	2346471	-21	kworker/0:1+events	23:00:52	0
2304488	99	37	2,30	cyclictest	2346471	-21	kworker/0:1+events	22:20:36	0
2304491	99	36	31,4	cyclictest	2331409	-21	kworker/u8:1+events_unbound	22:01:21	1
2304491	99	36	31,3	cyclictest	2569413	-21	systemd-run	23:35:00	1
2304491	99	36	29,5	cyclictest	2331409	-21	kworker/u8:1+flush-8:0	21:46:15	1
2304491	99	36	28,6	cyclictest	2609843	-21	apt-get	00:16:02	1
2304488	99	36	0,30	cyclictest	2336604	-21	kworker/0:0+events	19:40:39	0
2304491	99	35	26,6	cyclictest	282	-21	systemd-journal	21:21:22	1
2304491	99	35	25,8	cyclictest	282	-21	systemd-journal	20:06:05	1
2304491	99	35	24,8	cyclictest	282	-21	systemd-journal	22:00:01	1
2304488	99	35	29,4	cyclictest	2247489	-21	kworker/u8:0+events_unbound	19:31:07	0
2304488	99	35	27,6	cyclictest	282	-21	systemd-journal	19:55:00	0
2304488	99	35	27,6	cyclictest	2510539	-21	aten2_r5power_v	22:36:04	0
2304491	99	34	29,4	cyclictest	2474960	-21	kworker/u8:3+flush-8:0	23:56:23	1
2304491	99	34	24,8	cyclictest	2548779	-21	ntpq	23:11:15	1
2304488	99	34	30,3	cyclictest	2445281	-21	kworker/u8:0+flush-8:0	22:11:11	0
2304488	99	34	26,6	cyclictest	2435972	-21	diskstats	21:21:08	0
2304488	99	34	2,31	cyclictest	2346471	-21	kworker/0:1+events	20:03:28	0
2304488	99	34	1,32	cyclictest	2346471	-21	kworker/0:1+events	21:58:52	0
2304488	99	34	1,28	cyclictest	2594421	-21	kworker/0:2+events	00:10:52	0
2304488	99	34	0,32	cyclictest	2346471	-21	kworker/0:1+events	20:54:36	0
2304494	99	33	29,3	cyclictest	2534515	-21	kworker/u8:0+events_unbound	23:10:01	2
2304491	99	33	28,4	cyclictest	2509938	-21	kworker/u8:2+events_unbound	22:46:19	1
2304491	99	33	28,3	cyclictest	2420552	-21	cron	21:05:00	1
2304491	99	33	28,3	cyclictest	2420552	-21	cron	21:05:00	1
2304491	99	33	27,4	cyclictest	2385629	-21	grep	20:26:23	1
2304488	99	33	26,5	cyclictest	2624328	-21	cron	00:30:00	0
2304488	99	33	26,5	cyclictest	2430844	-21	aten2_r5power_e	21:16:05	0
2304488	99	33	26,5	cyclictest	2420180	-21	grep	21:01:23	0
2304488	99	33	26,5	cyclictest	2420180	-21	grep	21:01:22	0
2304488	99	33	2,30	cyclictest	919000	-21	kworker/0:3+events	19:17:12	0
2304488	99	33	2,30	cyclictest	2614491	-21	kworker/0:1+events	00:33:35	0
2304488	99	33	2,30	cyclictest	2346471	-21	kworker/0:1+events	22:55:04	0
2304488	99	33	22,9	cyclictest	2584494	-21	turbostat.cron	23:50:00	0
2304488	99	33	2,26	cyclictest	2346471	-21	kworker/0:1+events	20:55:24	0
2304488	99	33	1,31	cyclictest	2346471	-21	kworker/0:1+events	20:42:04	0
2304488	99	33	10,19	cyclictest	2594421	-21	kworker/0:2+events	00:20:04	0
2304488	99	33	0,29	cyclictest	2346471	-21	kworker/0:1+events	20:30:16	0
2304494	99	32	28,3	cyclictest	2247489	-21	kworker/u8:0+events_unbound	20:04:59	2
2304491	99	32	26,5	cyclictest	1461127	-21	kworker/u8:2+events_unbound	19:51:18	1
2304491	99	32	22,8	cyclictest	2484486	-21	ntpq	22:06:16	1
2304488	99	32	2,29	cyclictest	2346471	-21	kworker/0:1+events	22:04:32	0
2304488	99	32	1,30	cyclictest	2346471	-21	kworker/0:1+events	22:44:48	0
2304488	99	32	1,30	cyclictest	2346471	-21	kworker/0:1+events	22:08:28	0
2304488	99	32	1,30	cyclictest	2346471	-21	kworker/0:1+events	19:53:36	0
2304488	99	32	1,26	cyclictest	2346471	-21	kworker/0:1+events	20:45:35	0
2304488	99	32	0,31	cyclictest	2346471	-21	kworker/0:1+events	23:33:48	0
2304488	99	32	0,31	cyclictest	2346471	-21	kworker/0:1+events	21:06:56	0
2304488	99	32	0,31	cyclictest	2346471	-21	kworker/0:1+events	21:06:56	0
2525318	2	31	0,4	sleep0	20	1	rcuc/0	22:51:05	0
2304491	99	31	27,3	cyclictest	2376655	-21	cpuspeed_turbos	20:21:07	1
2304488	99	31	25,4	cyclictest	2505164	-21	latency_hist	22:30:01	0
2304488	99	31	24,6	cyclictest	2346083	-21	unixbench_multi	19:46:21	0
2304488	99	31	23,6	cyclictest	2334101	-21	kthreadcore	19:36:12	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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