OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

Default latency plot of shadow in rack #1, slot #6

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8
Special All - All RT - Optimization - Ethernet - Thumbnails - Next

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
Compare latency of primary with shadow system

Characteristics of the 50 highest latencies:

System rack1slot6s.osadl.org (updated Tue Mar 17, 2026 00:43:32)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
7290	99	93	3,83	cyclictest	0	-21	swapper/1	20:51:57	1
7290	99	93	3,83	cyclictest	0	-21	swapper/1	20:51:57	1
7290	99	86	16,50	cyclictest	6851	-21	ssh	20:37:16	1
18533	2	86	0,9	sleep0	7288	99	cyclictest	18:02:23	0
18533	2	86	0,9	sleep0	7288	99	cyclictest	18:02:23	0
7290	99	84	5,71	cyclictest	1419	-21	runrttasks	22:51:08	1
7290	99	83	8,37	cyclictest	20307	-21	ssh	21:46:56	1
7290	99	83	4,70	cyclictest	5332	-21	fschecks_time	22:12:00	1
7290	99	81	4,69	cyclictest	0	-21	swapper/1	20:32:17	1
7290	99	81	3,71	cyclictest	0	-21	swapper/1	19:04:44	1
7290	99	80	6,51	cyclictest	0	-21	swapper/1	19:56:43	1
7290	99	80	5,56	cyclictest	0	-21	swapper/1	20:24:40	1
7290	99	80	5,53	cyclictest	0	-21	swapper/1	21:07:11	1
7290	99	80	4,68	cyclictest	9441	-21	head	23:06:51	1
7290	99	80	4,68	cyclictest	1449	-21	ntp_states	19:42:12	1
7290	99	80	4,42	cyclictest	26538	-21	grep	22:42:13	1
7290	99	80	3,49	cyclictest	12169	-21	sh	21:33:33	1
7290	99	80	3,49	cyclictest	12169	-21	sh	21:33:33	1
7290	99	79	5,65	cyclictest	0	-21	swapper/1	21:27:13	1
7290	99	78	8,49	cyclictest	0	-21	swapper/1	20:56:56	1
7290	99	78	7,65	cyclictest	0	-21	swapper/1	22:36:48	1
7290	99	78	6,55	cyclictest	0	-21	swapper/1	21:57:33	1
7290	99	78	6,53	cyclictest	0	-21	swapper/1	21:06:44	1
7290	99	78	5,67	cyclictest	0	-21	swapper/1	20:15:03	1
7290	99	78	4,67	cyclictest	25138	-21	munin-run	19:26:47	1
7290	99	78	4,66	cyclictest	19789	-21	ssh	20:09:24	1
7290	99	78	4,66	cyclictest	19789	-21	ssh	20:09:24	1
7290	99	78	4,65	cyclictest	0	-21	swapper/1	19:37:10	1
7290	99	78	3,56	cyclictest	0	-21	swapper/1	20:18:17	1
7290	99	78	24,47	cyclictest	4351	-21	tune2fs	19:47:03	1
7290	99	77	7,52	cyclictest	0	-21	swapper/1	20:28:06	1
7290	99	77	7,50	cyclictest	0	-21	swapper/1	18:16:55	1
7290	99	77	5,66	cyclictest	0	-21	swapper/1	17:47:08	1
7290	99	77	5,56	cyclictest	0	-21	swapper/1	22:01:54	1
7290	99	77	4,65	cyclictest	7304	-21	sort	17:41:51	1
7290	99	77	4,65	cyclictest	0	-21	swapper/1	21:12:06	1
7290	99	77	4,56	cyclictest	15737	-21	ssh	20:02:18	1
7290	99	77	3,51	cyclictest	0	-21	swapper/1	23:01:50	1
7290	99	76	8,60	cyclictest	0	-21	swapper/1	20:44:46	1
7290	99	76	7,53	cyclictest	0	-21	swapper/1	19:58:08	1
7290	99	76	7,50	cyclictest	0	-21	swapper/1	22:28:09	1
7290	99	76	4,51	cyclictest	0	-21	swapper/1	22:21:55	1
7290	99	76	4,51	cyclictest	0	-21	swapper/1	17:42:16	1
7290	99	76	3,54	cyclictest	0	-21	swapper/1	22:07:31	1
7290	99	75	6,62	cyclictest	0	-21	swapper/1	18:27:02	1
7290	99	75	5,47	cyclictest	0	-21	swapper/1	22:59:36	1
7290	99	75	5,47	cyclictest	0	-21	swapper/1	22:59:36	1
7290	99	75	3,55	cyclictest	0	-21	swapper/1	20:48:31	1
7290	99	75	3,54	cyclictest	0	-21	swapper/1	18:22:11	1
7290	99	75	3,51	cyclictest	4065	-21	tail	21:22:02	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


Access: public		Short link to this page
This page was last modified on 2019-05-28 - 00:17