OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #3, slot #4

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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

Characteristics of the 50 highest latencies:

System rack3slot4.osadl.org (updated Tue Jul 16, 2024 00:46:59)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2243028	2	12470	12461,3	sleep5	0	-21	swapper/5	00:22:29	5
2237664	2	7600	7590,3	sleep5	0	-21	swapper/5	00:17:43	5
2225834	2	5895	5886,3	sleep5	0	-21	swapper/5	00:06:25	5
2225834	2	5895	5886,3	sleep5	0	-21	swapper/5	00:06:24	5
2206695	2	5653	5643,3	sleep5	0	-21	swapper/5	23:50:15	5
2206695	2	5653	5643,3	sleep5	0	-21	swapper/5	23:50:14	5
2249691	2	5010	4999,3	sleep5	0	-21	swapper/5	00:29:01	5
2256104	2	4859	4849,3	sleep5	0	-21	swapper/5	00:35:18	5
2159414	2	4736	4725,3	sleep5	0	-21	swapper/5	23:09:14	5
2220139	2	4053	4043,3	sleep5	0	-21	swapper/5	00:01:04	5
2177024	2	3347	3336,3	sleep5	0	-21	swapper/5	23:24:35	5
2111866	2	2668	2658,3	sleep5	0	-21	swapper/5	22:27:24	5
2191758	2	2598	2587,3	sleep5	0	-21	swapper/5	23:36:31	5
2183304	2	2574	2563,4	sleep5	0	-21	swapper/5	23:30:02	5
2197826	2	2380	2370,3	sleep5	0	-21	swapper/5	23:41:51	5
2202624	2	2293	2283,3	sleep5	0	-21	swapper/5	23:46:01	5
2202624	2	2293	2283,3	sleep5	0	-21	swapper/5	23:46:00	5
2167628	2	1231	1220,3	sleep5	0	-21	swapper/5	23:15:49	5
2167628	2	1231	1220,3	sleep5	0	-21	swapper/5	23:15:48	5
2215481	2	567	556,3	sleep5	0	-21	swapper/5	23:57:19	5
1989378	2	494	487,3	sleep4	0	-21	swapper/4	19:44:14	4
2221090	2	230	220,3	sleep4	0	-21	swapper/4	00:02:21	4
2193512	2	171	158,5	sleep4	2193522	-21	ssh	23:38:36	4
1975426	99	148	116,24	cyclictest	2168521	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:33:00	0
2210976	2	144	134,3	sleep4	0	-21	swapper/4	23:53:52	4
2210976	2	144	134,3	sleep4	0	-21	swapper/4	23:53:51	4
2249754	2	142	132,3	sleep4	0	-21	swapper/4	00:29:08	4
1975426	99	142	111,23	cyclictest	2222123	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	00:07:56	0
1975426	99	142	111,23	cyclictest	2222123	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	00:07:56	0
1975426	99	142	107,26	cyclictest	1999955	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:47:31	0
1975426	99	139	109,21	cyclictest	1999955	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:36:51	0
1975426	99	137	109,20	cyclictest	2024192	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:27:42	0
1975426	99	137	109,20	cyclictest	2024192	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:27:41	0
1975426	99	135	41,26	cyclictest	2106387	-21	kworker/0:1+events@ igb_watchdog_task	00:35:19	0
1975426	99	135	100,27	cyclictest	2006106	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:27:26	0
2022304	2	133	126,3	sleep5	0	-21	swapper/5	21:05:16	5
1975426	99	132	2,90	cyclictest	2083789	-21	kworker/0:0+events@ igb_watchdog_task	22:10:14	0
1975426	99	132	2,90	cyclictest	2083789	-21	kworker/0:0+events@ igb_watchdog_task	22:10:14	0
1975426	99	130	94,28	cyclictest	2024192	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:17:04	0
1975426	99	130	92,24	cyclictest	2168521	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:17:57	0
1975426	99	130	92,24	cyclictest	2168521	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:17:57	0
1975426	99	128	43,23	cyclictest	2007455	-21	kworker/0:2+events@ igb_watchdog_task	21:30:14	0
1975426	99	126	69,34	cyclictest	2106387	-21	kworker/0:1+events@ igb_watchdog_task	23:59:59	0
1975426	99	124	1,65	cyclictest	0	-21	swapper/0	23:35:57	0
1975426	99	123	49,30	cyclictest	1973022	-21	kworker/0:1+events@ igb_watchdog_task	19:10:29	0
1975426	99	119	3,64	cyclictest	2106387	-21	kworker/0:1+events@ igb_watchdog_task	23:44:15	0
1975426	99	119	33,49	cyclictest	1975231	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	19:20:34	0
1975426	99	117	55,13	cyclictest	2083789	-21	kworker/0:0+events@ igb_watchdog_task	22:20:58	0
1975426	99	116	61,41	cyclictest	2007455	-21	kworker/0:2+events@ igb_watchdog_task	21:35:33	0
1975426	99	116	5,54	cyclictest	2083789	-21	kworker/0:0+events_power_efficient@ fb_flashcursor	22:15:21	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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