OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #b, slot #2

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: performance
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rackbslot2.osadl.org (updated Mon Nov 17, 2025 12:44:40)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2533657	2	225	196,19	sleep0	0	-21	swapper/0	07:06:43	0
2533578	2	225	176,43	sleep2	0	-21	swapper/2	07:05:41	2
2533788	2	224	195,19	sleep1	0	-21	swapper/1	07:08:21	1
2533629	2	223	195,18	sleep3	0	-21	swapper/3	07:06:23	3
2614782	2	109	0,0	sleep3	2614786	-21	grep	08:40:16	3
2534041	99	65	62,1	cyclictest	2564803	-21	/usr/share/muni	07:45:01	1
2534038	99	59	9,50	cyclictest	2612007	-21	kworker/u8:0+efi_rts_wq	09:02:08	0
2534044	99	56	13,42	cyclictest	2668596	-21	/usr/sbin/munin	09:45:01	2
2534044	99	55	37,6	cyclictest	2659390	-21	kworker/2:0+pm	09:50:23	2
2534049	99	54	39,3	cyclictest	2616555	-13	chrome	08:45:01	3
2534041	99	53	50,2	cyclictest	2594377	-21	kworker/u8:2+flush-179:0	08:35:27	1
2534049	99	52	41,1	cyclictest	2668434	-13	chrome	09:45:01	3
2534041	99	51	3,28	cyclictest	0	-21	swapper/1	12:35:07	1
2534038	99	51	41,9	cyclictest	2594377	-21	kworker/u8:2+flush-179:0	08:45:16	0
2534041	99	49	2,46	cyclictest	2612007	-21	kworker/u8:0+efi_rts_wq	09:02:09	1
2534038	99	49	46,2	cyclictest	2594377	-21	kworker/u8:2+events_unbound	08:20:14	0
2534041	99	48	42,2	cyclictest	2711570	-21	kworker/u8:3+events_unbound	10:50:15	1
2534044	99	47	36,1	cyclictest	2694048	-21	kworker/2:2+pm	10:17:01	2
2534038	99	47	43,3	cyclictest	2719132	-21	kworker/u8:2+flush-179:0	12:15:10	0
2534038	99	47	43,2	cyclictest	2772607	-21	chrome	11:45:01	0
2534038	99	47	43,2	cyclictest	2772607	-21	chrome	11:45:01	0
2534041	99	46	43,2	cyclictest	2719132	-21	kworker/u8:2+events_unbound	11:25:14	1
2534041	99	46	42,3	cyclictest	2739678	-21	apt-get	11:05:14	1
2534038	99	46	43,2	cyclictest	2719132	-21	kworker/u8:2+flush-179:0	12:05:09	0
2534038	99	46	43,2	cyclictest	2698316	-21	kworker/u8:4+flush-179:0	10:20:15	0
2534038	99	46	37,8	cyclictest	2745648	-21	kworker/u8:0+events_unbound	11:20:14	0
2534049	99	45	40,3	cyclictest	2677016	-21	latency_hist	09:55:01	3
2534041	99	45	43,2	cyclictest	2564111	-21	kworker/u8:0+events_unbound	07:55:14	1
2534041	99	45	42,2	cyclictest	2711570	-21	kworker/u8:3+flush-179:0	10:35:16	1
2534041	99	45	42,2	cyclictest	2503062	-21	kworker/u8:0+flush-179:0	07:20:23	1
2534041	99	45	42,2	cyclictest	2469617	-21	kworker/u8:1+flush-179:0	07:15:27	1
2534038	99	45	42,2	cyclictest	2662634	-21	kworker/u8:0+flush-179:0	10:10:17	0
2534038	99	45	41,3	cyclictest	2564111	-21	kworker/u8:0+flush-179:0	07:50:15	0
2534038	99	45	41,3	cyclictest	2534715	-21	kworker/u8:3+flush-179:0	07:20:27	0
2534038	99	44	40,3	cyclictest	2662634	-21	kworker/u8:0+flush-179:0	09:40:08	0
2534044	99	43	9,33	cyclictest	2743588	-21	apt-get	11:10:14	2
2534044	99	43	37,5	cyclictest	2694048	-21	kworker/2:2+pm	10:40:08	2
2534044	99	43	30,12	cyclictest	2694048	-21	kworker/2:2+pm	10:35:52	2
2534038	99	43	30,7	cyclictest	2668593	-21	/usr/share/muni	09:45:01	0
2534049	99	42	37,4	cyclictest	2603387	-21	/usr/share/muni	08:30:16	3
2534044	99	42	35,5	cyclictest	2746209	-21	/usr/share/muni	11:15:03	2
2534041	99	42	39,2	cyclictest	2629051	-21	kworker/u8:2+events_unbound	09:15:24	1
2534038	99	42	25,16	cyclictest	2598810	-21	kworker/u8:3+flush-179:0	08:30:24	0
2534044	99	41	37,3	cyclictest	2694048	-21	kworker/2:2+pm	11:21:37	2
2534044	99	41	36,4	cyclictest	2577168	-21	kworker/2:1+pm	09:02:10	2
2534044	99	41	35,5	cyclictest	2577168	-21	kworker/2:1+pm	08:06:01	2
2534044	99	41	32,8	cyclictest	2577168	-21	kworker/2:1+pm	08:35:03	2
2534041	99	41	36,2	cyclictest	2754218	-21	kworker/u8:4+events_unbound	11:35:06	1
2534038	99	41	38,2	cyclictest	2564687	-13	chrome	07:45:01	0
2534049	99	40	37,2	cyclictest	2469665	-1	kworker/3:1H+kblockd	11:25:19	3
2534044	99	40	36,2	cyclictest	2694048	-21	kworker/2:2+pm	10:50:01	2
2534044	99	40	34,1	cyclictest	2763445	-21	kworker/2:2+pm	12:01:15	2
2534044	99	40	30,2	cyclictest	2577168	-21	kworker/2:1+pm	08:10:03	2
2534041	99	40	37,2	cyclictest	2633430	-21	kworker/u8:1+events_unbound	10:00:14	1
2534041	99	40	37,2	cyclictest	2598810	-21	kworker/u8:3+events_unbound	08:25:25	1
2534041	99	40	37,2	cyclictest	2568596	-21	kworker/u8:1+flush-179:0	08:17:02	1
2534041	99	40	35,3	cyclictest	2741906	-21	/usr/share/muni	11:10:03	1
2534038	99	40	39,1	cyclictest	2498465	-1	kworker/0:0H+kblockd	12:31:35	0
2534038	99	40	32,2	cyclictest	2568596	-21	kworker/u8:1+events_unbound	08:10:15	0
2534049	99	39	37,1	cyclictest	2651191	-21	kworker/3:1+pm	09:35:09	3
2534049	99	39	37,1	cyclictest	2535312	-21	awk	07:10:07	3
2534044	99	39	37,1	cyclictest	2793645	-31	munin-html	12:05:37	2
2534044	99	39	37,1	cyclictest	2694048	-21	kworker/2:2+pm	10:25:39	2
2534044	99	39	37,1	cyclictest	2577168	-21	kworker/2:1+pm	09:16:01	2
2534044	99	39	37,1	cyclictest	2533962	-21	kworker/2:1+pm	07:35:27	2
2534044	99	39	37,1	cyclictest	2533962	-21	kworker/2:1+pm	07:20:29	2
2534044	99	39	36,2	cyclictest	2763445	-21	kworker/2:2+pm	11:55:10	2
2534044	99	39	36,2	cyclictest	2659390	-21	kworker/2:0+pm	09:40:09	2
2534044	99	39	36,2	cyclictest	2577168	-21	kworker/2:1+pm	08:40:04	2
2534044	99	39	35,2	cyclictest	2564468	-21	kworker/2:0+pm	07:45:07	2
2534044	99	39	33,4	cyclictest	2621084	-21	/usr/share/muni	08:50:13	2
2534044	99	39	31,6	cyclictest	2754850	-21	/usr/share/muni	11:25:04	2
2534041	99	39	35,3	cyclictest	2808188	-21	apt-get	12:25:08	1
2534041	99	39	35,3	cyclictest	2808188	-21	apt-get	12:25:08	1
2534041	99	39	35,3	cyclictest	2771752	-21	kworker/u8:0+events_unbound	11:45:28	1
2534041	99	39	34,4	cyclictest	2791097	-21	apt-get	12:05:08	1
2534038	99	39	33,2	cyclictest	2723979	-21	kworker/u8:0+flush-179:0	10:50:07	0
2534049	99	38	33,4	cyclictest	2547898	-21	ntpq	07:25:03	3
2534044	99	38	36,1	cyclictest	2763445	-21	kworker/2:2+pm	12:30:18	2
2534044	99	38	36,1	cyclictest	2763445	-21	kworker/2:2+pm	11:50:18	2
2534044	99	38	36,1	cyclictest	2745591	-21	kworker/2:0+pm	11:31:25	2
2534044	99	38	36,1	cyclictest	2577168	-21	kworker/2:1+pm	09:21:08	2
2534044	99	38	36,1	cyclictest	2577168	-21	kworker/2:1+pm	09:05:07	2
2534044	99	38	36,1	cyclictest	2577168	-21	kworker/2:1+pm	08:31:13	2
2534044	99	38	36,1	cyclictest	2533962	-21	kworker/2:1+pm	07:31:33	2
2534044	99	38	36,1	cyclictest	2533962	-21	kworker/2:1+pm	07:17:01	2
2534044	99	38	35,2	cyclictest	2763445	-21	kworker/2:2+pm	12:10:49	2
2534044	99	38	35,2	cyclictest	2763445	-21	kworker/2:2+pm	11:46:10	2
2534044	99	38	35,2	cyclictest	2577168	-21	kworker/2:1+pm	09:10:47	2
2534044	99	38	34,4	cyclictest	2659390	-21	kworker/2:0+pm	09:37:11	2
2534044	99	38	34,2	cyclictest	2763445	-21	kworker/2:2+pm	12:20:15	2
2534044	99	38	34,2	cyclictest	2659390	-21	kworker/2:0+pm	10:00:04	2
2534044	99	38	34,2	cyclictest	2577168	-21	kworker/2:1+pm	08:20:03	2
2534038	99	38	36,1	cyclictest	1318	-21	snmpd	09:05:11	0
2534038	99	38	34,3	cyclictest	2754833	-21	/usr/share/muni	11:25:02	0
2534038	99	38	34,3	cyclictest	2555724	-21	kworker/u8:2+events_unbound	07:40:09	0
2534038	99	38	34,2	cyclictest	2498465	-1	kworker/0:0H+kblockd	11:05:17	0
2534038	99	38	33,4	cyclictest	2503062	-21	kworker/u8:0+flush-179:0	07:10:04	0
2534038	99	38	33,3	cyclictest	2809152	-21	ntpq	12:25:15	0
2534038	99	38	33,3	cyclictest	2809152	-21	ntpq	12:25:15	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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