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 Thu Dec 11, 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
3222620	2	229	200,19	sleep1	0	-21	swapper/1	07:07:52	1
3221575	2	227	179,38	sleep2	0	-21	swapper/2	07:05:21	2
3222607	2	225	197,18	sleep3	0	-21	swapper/3	07:07:42	3
3222589	2	223	195,18	sleep0	0	-21	swapper/0	07:07:27	0
3222969	99	97	0,62	cyclictest	3358533	-21	chrome	09:45:01	0
3222975	99	64	61,2	cyclictest	3358583	-21	/usr/share/muni	09:45:02	1
3222975	99	62	5,56	cyclictest	3309837	-21	kworker/u8:2+efi_rts_wq	08:55:30	1
3222982	99	60	54,2	cyclictest	3410992	-21	chrome	10:45:01	3
3222969	99	57	3,53	cyclictest	3309837	-21	kworker/u8:2+efi_rts_wq	08:55:27	0
3222969	99	53	49,3	cyclictest	3305915	-21	chrome	08:45:00	0
3222969	99	49	46,2	cyclictest	3413934	-21	kworker/u8:1+events_unbound	11:25:13	0
3222969	99	48	44,3	cyclictest	3488202	-21	kworker/u8:3+flush-179:0	12:25:23	0
3222979	99	47	44,2	cyclictest	3394505	-21	kworker/u8:1+events_unbound	10:35:17	2
3222979	99	47	44,2	cyclictest	3290491	-21	kworker/u8:1+flush-179:0	08:55:16	2
3222975	99	46	43,2	cyclictest	3305802	-13	chrome	08:45:01	1
3222979	99	45	41,3	cyclictest	3349290	-21	kworker/u8:0+events_unbound	09:55:07	2
3222979	99	44	41,2	cyclictest	3388259	-21	kworker/u8:3+events_unbound	10:30:16	2
3222979	99	44	40,3	cyclictest	3231763	-21	kworker/u8:2+events_unbound	07:25:09	2
3222979	99	44	33,10	cyclictest	3379942	-21	kworker/u8:0+events_unbound	10:15:10	2
3222975	99	44	39,3	cyclictest	3379942	-21	kworker/u8:0+events_unbound	10:15:14	1
3222979	99	43	22,1	cyclictest	1318	-21	snmpd	10:01:13	2
3222969	99	43	40,2	cyclictest	3266410	-21	kworker/u8:0+events_unbound	08:00:16	0
3222982	99	42	37,4	cyclictest	3321035	-21	apt-get	09:00:12	3
3222979	99	42	37,2	cyclictest	3222463	-21	kworker/u8:1+flush-179:0	07:55:05	2
3222975	99	42	38,3	cyclictest	3468313	-21	apt-get	11:50:08	1
3222975	99	42	38,3	cyclictest	3404085	-21	apt-get	10:35:14	1
3222969	99	42	39,2	cyclictest	3406423	-21	kworker/u8:0+flush-179:0	11:10:06	0
3222969	99	42	37,4	cyclictest	3299449	-21	apt-get	08:35:14	0
3222982	99	41	38,2	cyclictest	3150548	-1	kworker/3:1H+kblockd	10:10:56	3
3222979	99	41	38,2	cyclictest	3406423	-21	kworker/u8:0+flush-179:0	11:15:29	2
3222979	99	41	38,2	cyclictest	3258487	-21	kworker/2:2+pm	08:10:11	2
3222979	99	41	38,2	cyclictest	3258487	-21	kworker/2:2+pm	08:10:11	2
3222979	99	41	33,5	cyclictest	3410940	-21	chrome	10:45:01	2
3222982	99	40	32,7	cyclictest	3490575	-21	awk	12:15:13	3
3222982	99	40	30,9	cyclictest	1318	-21	snmpd	09:45:37	3
3222979	99	40	38,2	cyclictest	3406423	-21	kworker/u8:0+flush-179:0	11:45:28	2
3222979	99	40	37,2	cyclictest	3448979	-21	kworker/2:2+pm	12:00:03	2
3222979	99	40	36,2	cyclictest	3309837	-21	kworker/u8:2+events_unbound	09:00:25	2
3222979	99	40	27,2	cyclictest	3183353	-21	kworker/2:0+pm	07:15:05	2
3222975	99	40	37,2	cyclictest	3290491	-21	kworker/u8:1+flush-179:0	08:50:16	1
3222969	99	40	36,3	cyclictest	3327313	-21	kworker/u8:0+events_unbound	09:15:09	0
3222982	99	39	33,4	cyclictest	3458423	-21	/usr/share/muni	11:40:01	3
3222982	99	39	33,4	cyclictest	3402221	-21	/usr/share/muni	10:35:10	3
3222982	99	39	30,6	cyclictest	3493295	-21	/usr/share/muni	12:20:13	3
3222979	99	39	37,2	cyclictest	3222463	-21	kworker/u8:1+events_unbound	07:30:14	2
3222979	99	39	37,1	cyclictest	3448979	-21	kworker/2:2+pm	11:41:09	2
3222979	99	39	37,1	cyclictest	3258487	-21	kworker/2:2+pm	10:10:27	2
3222979	99	39	37,1	cyclictest	3258487	-21	kworker/2:2+pm	09:45:30	2
3222979	99	39	37,1	cyclictest	3258487	-21	kworker/2:2+pm	09:30:07	2
3222979	99	39	37,1	cyclictest	3258487	-21	kworker/2:2+pm	08:45:29	2
3222979	99	39	37,1	cyclictest	3258487	-21	kworker/2:2+pm	08:16:31	2
3222979	99	39	37,1	cyclictest	3258487	-21	kworker/2:2+pm	08:05:39	2
3222979	99	39	37,1	cyclictest	3183353	-21	kworker/2:0+pm	07:45:11	2
3222979	99	39	36,2	cyclictest	3413934	-21	kworker/u8:1+events_unbound	11:20:24	2
3222975	99	39	37,1	cyclictest	3417783	-21	sensors_temp	10:50:16	1
3222975	99	39	36,2	cyclictest	3222463	-21	kworker/u8:1+events_unbound	08:10:13	1
3222975	99	39	36,2	cyclictest	3222463	-21	kworker/u8:1+events_unbound	08:10:13	1
3222969	99	39	35,3	cyclictest	3344902	-21	kworker/u8:2+flush-179:0	10:40:04	0
3222982	99	38	26,10	cyclictest	3254052	-21	CacheThread_Blo	07:45:01	3
3222979	99	38	37,1	cyclictest	3258487	-21	kworker/2:2+pm	09:25:18	2
3222979	99	38	36,1	cyclictest	3448979	-21	kworker/2:2+pm	12:26:05	2
3222979	99	38	36,1	cyclictest	3448979	-21	kworker/2:2+pm	12:20:13	2
3222979	99	38	36,1	cyclictest	3411070	-21	kworker/2:0+pm	11:25:03	2
3222979	99	38	36,1	cyclictest	3411070	-21	kworker/2:0+pm	10:50:54	2
3222979	99	38	36,1	cyclictest	3384022	-21	kworker/2:1+pm	10:20:43	2
3222979	99	38	36,1	cyclictest	3258487	-21	kworker/2:2+pm	08:35:24	2
3222979	99	38	36,1	cyclictest	3258487	-21	kworker/2:2+pm	08:30:17	2
3222979	99	38	35,2	cyclictest	3411070	-21	kworker/2:0+pm	11:10:07	2
3222979	99	38	35,2	cyclictest	3183353	-21	kworker/2:0+pm	07:40:04	2
3222979	99	38	34,3	cyclictest	3344902	-21	kworker/u8:2+events_unbound	10:25:32	2
3222979	99	38	11,26	cyclictest	3340520	-31	munin-graph	09:20:56	2
3222975	99	38	30,7	cyclictest	3020462	-1	kworker/1:0H+kblockd	09:50:16	1
3222969	99	38	34,2	cyclictest	3332325	-21	kworker/u8:1+flush-179:0	10:00:26	0
3222982	99	37	34,2	cyclictest	3150548	-1	kworker/3:1H+kblockd	11:55:05	3
3222982	99	37	34,2	cyclictest	3150548	-1	kworker/3:1H+kblockd	10:10:01	3
3222982	99	37	34,2	cyclictest	3150548	-1	kworker/3:1H+kblockd	09:32:10	3
3222982	99	37	34,2	cyclictest	3150548	-1	kworker/3:1H+kblockd	07:44:27	3
3222982	99	37	33,3	cyclictest	3150548	-1	kworker/3:1H+kblockd	10:01:23	3
3222982	99	37	33,3	cyclictest	3150548	-1	kworker/3:1H+kblockd	08:10:13	3
3222982	99	37	33,3	cyclictest	3150548	-1	kworker/3:1H+kblockd	08:10:12	3
3222982	99	37	33,2	cyclictest	3150548	-1	kworker/3:1H+kblockd	08:55:19	3
3222982	99	37	31,4	cyclictest	47022	-21	systemd-journal	07:20:00	3
3222982	99	37	30,5	cyclictest	3480021	-21	/usr/share/muni	12:05:09	3
3222979	99	37	35,2	cyclictest	3184213	-21	kworker/u8:3+events_unbound	08:20:23	2
3222979	99	37	35,1	cyclictest	3448979	-21	kworker/2:2+pm	12:35:39	2
3222979	99	37	35,1	cyclictest	3448979	-21	kworker/2:2+pm	12:15:54	2
3222979	99	37	35,1	cyclictest	3448979	-21	kworker/2:2+pm	11:56:11	2
3222979	99	37	35,1	cyclictest	3384022	-21	kworker/2:1+pm	10:40:16	2
3222979	99	37	35,1	cyclictest	3258487	-21	kworker/2:2+pm	09:15:26	2
3222979	99	37	35,1	cyclictest	3258487	-21	kworker/2:2+pm	08:27:48	2
3222979	99	37	35,1	cyclictest	3183353	-21	kworker/2:0+pm	07:36:00	2
3222979	99	37	35,1	cyclictest	3183353	-21	kworker/2:0+pm	07:20:47	2
3222979	99	37	34,3	cyclictest	3419425	-21	kworker/u8:3+flush-179:0	11:00:04	2
3222975	99	37	35,1	cyclictest	3124188	-21	kworker/1:2+pm	09:22:01	1
3222975	99	37	35,1	cyclictest	3124188	-21	kworker/1:2+pm	07:15:10	1
3222975	99	37	34,2	cyclictest	3020462	-1	kworker/1:0H+kblockd	10:45:06	1
3222975	99	37	33,2	cyclictest	3020462	-1	kworker/1:0H+kblockd	12:30:01	1
3222969	99	37	35,2	cyclictest	3344902	-21	kworker/u8:2+flush-179:0	09:40:05	0
3222969	99	37	35,1	cyclictest	3393253	-21	kworker/0:2+pm	10:33:26	0
3222969	99	37	34,2	cyclictest	3466979	-21	kworker/u8:3+flush-179:0	12:05:05	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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