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 Wed Dec 31, 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
3210220	2	233	205,19	sleep0	0	-21	swapper/0	07:07:03	0
3210207	2	231	202,19	sleep2	0	-21	swapper/2	07:06:54	2
3210139	2	231	181,40	sleep1	0	-21	swapper/1	07:06:08	1
3210166	2	223	194,19	sleep3	0	-21	swapper/3	07:06:26	3
3210643	99	58	54,3	cyclictest	3431980	-21	/usr/share/muni	11:25:01	3
3210643	99	57	54,2	cyclictest	3210163	-21	kworker/u8:5+flush-179:0	07:10:16	3
3414715	2	53	0,1	chrt	3414714	-21	ntpq	11:05:02	2
3210643	99	52	50,2	cyclictest	3271914	-21	kworker/u8:2+events_unbound	09:10:15	3
3210643	99	52	48,3	cyclictest	3427188	-21	kworker/u8:0+events_unbound	11:30:14	3
3210634	99	52	48,3	cyclictest	3229473	-21	apt-get	07:30:07	1
3210641	99	51	48,2	cyclictest	3210163	-21	kworker/u8:5+events_unbound	07:40:12	2
3210634	99	49	46,1	cyclictest	3241767	-21	/usr/share/muni	07:45:01	1
3210643	99	48	46,2	cyclictest	3379994	-21	kworker/u8:0+flush-179:0	10:50:12	3
3210641	99	48	45,2	cyclictest	3464858	-21	kworker/u8:1+events_unbound	12:05:06	2
3210634	99	48	4,44	cyclictest	3439934	-21	kworker/u8:2+efi_rts_wq	12:09:08	1
3210632	99	48	42,4	cyclictest	3453337	-21	latency_hist	11:50:02	0
3210643	99	46	43,2	cyclictest	3401149	-21	kworker/u8:4+flush-179:0	10:55:13	3
3210641	99	46	43,2	cyclictest	3448469	-21	kworker/u8:3+flush-179:0	12:00:14	2
3210641	99	46	43,2	cyclictest	3379994	-21	kworker/u8:0+flush-179:0	10:50:05	2
3210643	99	44	38,4	cyclictest	3280498	-21	munin-update	08:30:03	3
3210643	99	43	40,2	cyclictest	3210163	-21	kworker/u8:5+flush-179:0	07:40:12	3
3210643	99	43	32,9	cyclictest	3258685	-21	kworker/u8:0+flush-179:0	08:25:05	3
3210643	99	43	32,10	cyclictest	3258685	-21	kworker/u8:0+flush-179:0	09:05:11	3
3210641	99	43	40,2	cyclictest	3453067	-21	kworker/u8:4+flush-179:0	11:50:13	2
3210641	99	43	40,2	cyclictest	3379994	-21	kworker/u8:0+flush-179:0	10:35:01	2
3210641	99	43	39,3	cyclictest	3288978	-21	kworker/u8:1+events_unbound	08:40:23	2
3210632	99	43	38,4	cyclictest	3437375	-21	apt-get	11:30:07	0
3210641	99	42	38,3	cyclictest	3345026	-21	kworker/u8:1+events_unbound	09:45:10	2
3210641	99	42	28,2	cyclictest	2983160	-1	kworker/2:2H+kblockd	09:01:47	2
3210634	99	42	37,4	cyclictest	3375940	-21	/usr/share/muni	10:20:14	1
3210643	99	41	38,2	cyclictest	3336302	-21	kworker/u8:2+flush-179:0	09:40:25	3
3210641	99	41	38,2	cyclictest	3405764	-21	kworker/u8:2+events_unbound	11:00:09	2
3210643	99	40	38,1	cyclictest	3413905	-21	kworker/3:0+pm	11:15:00	3
3210643	99	40	34,5	cyclictest	3466777	-21	kworker/3:1+pm	12:19:23	3
3210641	99	40	37,2	cyclictest	3405764	-21	kworker/u8:2+events_unbound	10:55:27	2
3210641	99	40	37,2	cyclictest	3362862	-21	kworker/u8:2+flush-179:0	10:10:05	2
3210641	99	40	37,2	cyclictest	3280176	-21	kworker/u8:3+events_unbound	08:50:14	2
3210641	99	40	36,3	cyclictest	3379994	-21	kworker/u8:0+events_unbound	10:35:01	2
3210641	99	40	36,2	cyclictest	3180419	-21	kworker/2:1+pm	09:10:01	2
3210634	99	40	36,3	cyclictest	3385534	-21	apt-get	10:30:07	1
3210643	99	39	38,0	cyclictest	1318	-21	snmpd	07:55:13	3
3210643	99	39	37,2	cyclictest	3393554	-21	kworker/u8:2+flush-179:0	10:45:16	3
3210643	99	39	37,1	cyclictest	3341288	-21	kworker/3:0+pm	10:39:50	3
3210643	99	39	36,2	cyclictest	3336302	-21	kworker/u8:2+events_unbound	09:55:13	3
3210643	99	39	36,2	cyclictest	3241354	-21	kworker/u8:0+flush-179:0	07:50:11	3
3210641	99	39	37,1	cyclictest	3427571	-21	kworker/2:1+pm	11:30:51	2
3210641	99	39	37,1	cyclictest	3427571	-21	kworker/2:1+pm	11:20:16	2
3210641	99	39	37,1	cyclictest	3349710	-21	kworker/2:0+pm	10:45:41	2
3210641	99	39	37,1	cyclictest	3180419	-21	kworker/2:1+pm	08:25:30	2
3210641	99	39	37,1	cyclictest	3180419	-21	kworker/2:1+pm	07:46:04	2
3210641	99	39	37,1	cyclictest	3180419	-21	kworker/2:1+pm	07:31:27	2
3210641	99	39	36,2	cyclictest	3271914	-21	kworker/u8:2+flush-179:0	09:15:05	2
3210641	99	39	34,4	cyclictest	3267799	-21	/usr/share/muni	08:15:02	2
3210634	99	39	36,2	cyclictest	3308528	-21	apt-get	09:00:14	1
3210634	99	39	33,5	cyclictest	3319963	-21	ntpq	09:15:03	1
3210632	99	39	36,3	cyclictest	3414172	-21	kworker/u8:3+flush-179:0	11:25:13	0
3210643	99	38	36,1	cyclictest	3466777	-21	kworker/3:1+pm	12:30:21	3
3210643	99	38	36,1	cyclictest	3224442	-1	kworker/3:0H+kblockd	10:15:30	3
3210643	99	38	35,2	cyclictest	3379994	-21	kworker/u8:0+events_unbound	10:25:15	3
3210643	99	38	35,2	cyclictest	3280176	-21	kworker/u8:3+flush-179:0	08:50:05	3
3210643	99	38	30,3	cyclictest	3453067	-21	kworker/u8:4+events_unbound	11:50:09	3
3210641	99	38	36,1	cyclictest	3461098	-21	kworker/2:2+pm	12:36:04	2
3210641	99	38	36,1	cyclictest	3461098	-21	kworker/2:2+pm	12:30:51	2
3210641	99	38	36,1	cyclictest	3461098	-21	kworker/2:2+pm	12:10:17	2
3210641	99	38	36,1	cyclictest	3427571	-21	kworker/2:1+pm	11:26:46	2
3210641	99	38	36,1	cyclictest	3349710	-21	kworker/2:0+pm	10:00:30	2
3210641	99	38	36,1	cyclictest	3180419	-21	kworker/2:1+pm	08:56:24	2
3210641	99	38	36,1	cyclictest	3180419	-21	kworker/2:1+pm	08:46:05	2
3210641	99	38	36,1	cyclictest	3180419	-21	kworker/2:1+pm	08:36:05	2
3210641	99	38	36,1	cyclictest	3180419	-21	kworker/2:1+pm	08:08:03	2
3210641	99	38	36,1	cyclictest	3180419	-21	kworker/2:1+pm	07:51:03	2
3210641	99	38	35,2	cyclictest	3427571	-21	kworker/2:1+pm	11:45:06	2
3210641	99	38	35,2	cyclictest	3427571	-21	kworker/2:1+pm	11:40:01	2
3210641	99	38	35,2	cyclictest	2983160	-1	kworker/2:2H+kblockd	12:25:32	2
3210641	99	38	27,10	cyclictest	3180419	-21	kworker/2:1+pm	07:15:15	2
3210641	99	38	1,14	cyclictest	3331946	-31	munin-html	09:25:40	2
3210634	99	38	25,12	cyclictest	3488835	-21	munin-node	12:30:03	1
3210643	99	37	35,2	cyclictest	3197543	-21	kworker/u8:4+flush-179:0	07:15:13	3
3210643	99	37	34,2	cyclictest	3258685	-21	kworker/u8:0+flush-179:0	09:30:27	3
3210643	99	37	34,2	cyclictest	3224442	-1	kworker/3:0H+kblockd	09:15:03	3
3210641	99	37	35,2	cyclictest	3180419	-21	kworker/2:1+pm	08:01:33	2
3210641	99	37	35,1	cyclictest	3180419	-21	kworker/2:1+pm	09:20:47	2
3210641	99	37	34,2	cyclictest	3180419	-21	kworker/2:1+pm	07:25:27	2
3210641	99	37	34,2	cyclictest	2983160	-1	kworker/2:2H+kblockd	09:05:54	2
3210634	99	37	34,2	cyclictest	3205956	-1	kworker/1:2H+kblockd	07:10:12	1
3210634	99	37	26,10	cyclictest	1318	-21	snmpd	08:51:56	1
3210632	99	37	34,2	cyclictest	3099002	-1	kworker/0:1H+kblockd	11:15:28	0
3210632	99	37	34,2	cyclictest	3099002	-1	kworker/0:1H+kblockd	07:43:06	0
3210632	99	37	31,4	cyclictest	3471058	-21	/usr/share/muni	12:10:01	0
3210643	99	36	34,1	cyclictest	3224442	-1	kworker/3:0H+kblockd	12:11:07	3
3210643	99	36	34,1	cyclictest	3224442	-1	kworker/3:0H+kblockd	12:06:34	3
3210643	99	36	34,1	cyclictest	3224442	-1	kworker/3:0H+kblockd	09:51:44	3
3210643	99	36	34,1	cyclictest	3224442	-1	kworker/3:0H+kblockd	09:48:12	3
3210643	99	36	34,1	cyclictest	3224442	-1	kworker/3:0H+kblockd	08:05:59	3
3210643	99	36	34,1	cyclictest	3224442	-1	kworker/3:0H+kblockd	07:48:11	3
3210643	99	36	33,2	cyclictest	3414172	-21	kworker/u8:3+flush-179:0	11:20:14	3
3210643	99	36	33,2	cyclictest	3224442	-1	kworker/3:0H+kblockd	11:01:49	3
3210643	99	36	33,2	cyclictest	3224442	-1	kworker/3:0H+kblockd	09:01:54	3
3210643	99	36	33,2	cyclictest	3210163	-21	kworker/u8:5+events_unbound	07:30:10	3
3210643	99	36	32,3	cyclictest	3273848	-21	apt-get	08:20:12	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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