OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #b, slot #1

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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance

Characteristics of the 50 highest latencies:

System rackbslot1.osadl.org (updated Mon Jan 20, 2025 12:44:35)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2933753	2	202	154,13	sleep0	0	-21	swapper/0	07:06:11	0
2933756	2	197	167,20	sleep3	0	-21	swapper/3	07:06:13	3
2933780	2	195	171,15	sleep2	0	-21	swapper/2	07:06:32	2
2933898	2	192	168,14	sleep1	0	-21	swapper/1	07:07:59	1
3161817	2	110	0,1	sleep3	0	-21	swapper/3	11:48:31	3
2934279	99	84	4,79	cyclictest	3451163	-21	chrome	11:45:04	1
2934276	99	81	4,75	cyclictest	3159584	-21	snmp_wlanpowerc	11:45:03	0
2934279	99	69	66,2	cyclictest	3102988	-21	kworker/u8:1+flush-179:0	11:20:00	1
2934281	99	68	64,3	cyclictest	3082404	-21	kworker/u8:1+flush-179:0	10:10:05	2
2934276	99	65	61,3	cyclictest	2947766	-21	kworker/u8:0+flush-179:0	08:00:36	0
2934279	99	62	55,5	cyclictest	3063938	-21	latency_hist	09:45:00	1
2934279	99	56	43,10	cyclictest	2969727	-21	kworker/u8:4+flush-179:0	08:00:21	1
2934276	99	56	53,2	cyclictest	3123460	-21	latency_hist	11:00:02	0
2934281	99	55	51,3	cyclictest	3075495	-21	kworker/u8:2+flush-179:0	10:15:34	2
2934281	99	55	51,3	cyclictest	3048190	-21	kworker/u8:1+events_unbound	09:45:19	2
2934281	99	55	51,3	cyclictest	2947766	-21	kworker/u8:0+flush-179:0	07:35:16	2
2934281	99	54	50,3	cyclictest	2929267	-21	kworker/u8:1+flush-179:0	07:15:28	2
2934279	99	54	50,3	cyclictest	3112013	-21	kworker/u8:2+events_unbound	10:55:24	1
2934276	99	54	50,3	cyclictest	2929267	-21	kworker/u8:1+events_unbound	07:40:26	0
2934276	99	54	50,3	cyclictest	2929267	-21	kworker/u8:1+events_unbound	07:40:26	0
2934279	99	52	49,2	cyclictest	3019205	-21	kworker/u8:3+flush-179:0	09:50:23	1
2934276	99	52	48,3	cyclictest	2992591	-21	apt-get	08:15:18	0
2934285	99	51	40,9	cyclictest	3059823	-21	/usr/share/muni	09:40:15	3
2934285	99	51	32,13	cyclictest	1888279	-1	kworker/3:0H+kblockd	10:25:05	3
2934285	99	51	32,13	cyclictest	1888279	-1	kworker/3:0H+kblockd	10:25:04	3
2934281	99	51	47,3	cyclictest	2999749	-21	kworker/u8:3+flush-179:0	08:25:27	2
2934281	99	51	36,14	cyclictest	3091215	-21	kworker/u8:3+flush-179:0	10:55:20	2
2934279	99	51	45,4	cyclictest	2965549	-21	latency_hist	07:45:01	1
2934279	99	51	45,4	cyclictest	2965549	-21	latency_hist	07:45:01	1
2934276	99	51	48,2	cyclictest	3158886	-21	kworker/u8:2+events_unbound	12:30:23	0
2934276	99	51	46,4	cyclictest	1804640	-13	chrome	07:35:35	0
2934276	99	51	46,3	cyclictest	3048190	-21	kworker/u8:1+events_unbound	09:50:28	0
2934281	99	50	47,2	cyclictest	2964751	-21	kworker/u8:2+events_unbound	08:20:10	2
2934281	99	50	46,3	cyclictest	3102988	-21	kworker/u8:1+flush-179:0	11:40:10	2
2934281	99	50	46,3	cyclictest	3102988	-21	kworker/u8:1+flush-179:0	11:40:10	2
2934281	99	50	46,3	cyclictest	3007741	-21	kworker/u8:2+flush-179:0	08:35:26	2
2934281	99	50	41,5	cyclictest	3158886	-21	kworker/u8:2+events_unbound	12:30:00	2
2934279	99	50	46,3	cyclictest	3127541	-21	kworker/u8:0+events_unbound	12:10:22	1
2934276	99	50	46,3	cyclictest	3174767	-21	kworker/u8:3+events_unbound	12:05:01	0
2934281	99	49	45,3	cyclictest	2969727	-21	kworker/u8:4+flush-179:0	07:50:15	2
2934281	99	49	45,3	cyclictest	2969727	-21	kworker/u8:4+flush-179:0	07:50:15	2
2934281	99	49	45,2	cyclictest	3070759	-21	kworker/u8:4+events_unbound	10:05:24	2
2934276	99	49	45,3	cyclictest	3108758	-21	apt-get	10:40:13	0
2934281	99	48	44,3	cyclictest	3127541	-21	kworker/u8:0+flush-179:0	11:05:06	2
2934281	99	48	41,5	cyclictest	3003908	-21	/usr/share/muni	08:30:09	2
2934279	99	48	45,2	cyclictest	2868717	-21	kworker/u8:3+events_unbound	07:17:01	1
2934276	99	48	44,3	cyclictest	3075495	-21	kworker/u8:2+flush-179:0	10:22:27	0
2934276	99	48	43,4	cyclictest	2947766	-21	kworker/u8:0+flush-179:0	08:05:15	0
2934285	99	47	41,4	cyclictest	3150676	-21	/usr/share/muni	11:35:17	3
2934281	99	47	42,3	cyclictest	3139426	-21	/usr/share/muni	11:20:05	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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