OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #5

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
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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
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rackeslot5s.osadl.org (updated Tue Sep 01, 2026 00:44:24)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1694	99	26	0,25	cyclictest	27773	-21	diskmemload	22:08:34	3
1694	99	26	0,25	cyclictest	27773	-21	diskmemload	22:08:34	3
1694	99	25	0,24	cyclictest	27773	-21	diskmemload	23:41:25	3
1690	99	25	0,24	cyclictest	0	-21	swapper/2	23:42:25	2
1690	99	25	0,24	cyclictest	0	-21	swapper/2	23:16:51	2
1690	99	25	0,1	cyclictest	0	-21	swapper/2	21:45:20	2
1689	99	25	22,2	cyclictest	7835	-21	rm	23:41:35	1
1689	99	25	0,1	cyclictest	0	-21	swapper/1	22:32:39	1
1688	99	25	0,24	cyclictest	0	-21	swapper/0	00:30:01	0
1694	99	24	0,23	cyclictest	27773	-21	diskmemload	21:34:49	3
1694	99	24	0,23	cyclictest	27773	-21	diskmemload	21:16:06	3
1694	99	24	0,23	cyclictest	0	-21	swapper/3	21:54:57	3
1694	99	24	0,23	cyclictest	0	-21	swapper/3	20:31:09	3
1690	99	24	24,0	cyclictest	0	-21	swapper/2	00:08:45	2
1690	99	24	23,1	cyclictest	0	-21	swapper/2	00:25:44	2
1690	99	24	0,23	cyclictest	27773	-21	diskmemload	22:54:02	2
1690	99	24	0,23	cyclictest	27773	-21	diskmemload	21:40:27	2
1690	99	24	0,23	cyclictest	0	-21	swapper/2	23:30:56	2
1690	99	24	0,1	cyclictest	0	-21	swapper/2	21:18:39	2
1689	99	24	24,0	cyclictest	0	-21	swapper/1	21:27:07	1
1689	99	24	0,23	cyclictest	26828	-21	sh	23:59:28	1
1689	99	24	0,1	cyclictest	2152	-21	diskmemload	23:36:33	1
1689	99	24	0,0	cyclictest	0	-21	swapper/1	23:05:02	1
1688	99	24	21,2	cyclictest	9713	-21	ssh	22:18:03	0
1688	99	24	21,2	cyclictest	27828	-21	ssh	21:36:28	0
1688	99	24	21,2	cyclictest	12499	-21	sh	21:51:41	0
1688	99	24	0,24	cyclictest	0	-21	swapper/0	22:04:36	0
1688	99	24	0,23	cyclictest	27773	-21	diskmemload	23:30:20	0
1688	99	24	0,23	cyclictest	0	-21	swapper/0	00:35:29	0
1688	99	24	0,22	cyclictest	28956	-21	cut	22:06:14	0
1688	99	24	0,22	cyclictest	28956	-21	cut	22:06:14	0
1688	99	24	0,1	cyclictest	16837	-21	ssh	23:50:47	0
1694	99	23	23,0	cyclictest	0	-21	swapper/3	22:20:04	3
1694	99	23	23,0	cyclictest	0	-21	swapper/3	00:18:38	3
1694	99	23	22,1	cyclictest	15228	-21	apt-get	23:21:09	3
1694	99	23	22,1	cyclictest	0	-21	swapper/3	22:35:54	3
1694	99	23	22,0	cyclictest	25861	-21	apt-get	21:36:10	3
1694	99	23	21,1	cyclictest	0	-21	swapper/3	23:57:05	3
1694	99	23	21,1	cyclictest	0	-21	swapper/3	23:35:01	3
1694	99	23	21,1	cyclictest	0	-21	swapper/3	23:31:10	3
1694	99	23	21,1	cyclictest	0	-21	swapper/3	21:41:23	3
1694	99	23	21,1	cyclictest	0	-21	swapper/3	00:06:11	3
1694	99	23	1,21	cyclictest	24784	-21	apt-get	23:01:09	3
1694	99	23	0,23	cyclictest	0	-21	swapper/3	23:09:06	3
1694	99	23	0,23	cyclictest	0	-21	swapper/3	22:10:10	3
1694	99	23	0,22	cyclictest	4674	-21	ssh	21:46:07	3
1694	99	23	0,22	cyclictest	4513	-21	ssh	00:38:15	3
1694	99	23	0,22	cyclictest	0	-21	swapper/3	22:48:40	3
1694	99	23	0,22	cyclictest	0	-21	swapper/3	21:11:13	3
1694	99	23	0,1	cyclictest	0	-21	swapper/3	22:50:57	3
1694	99	23	0,0	cyclictest	27773	-21	diskmemload	22:41:17	3
1694	99	23	0,0	cyclictest	27773	-21	diskmemload	00:22:36	3
1694	99	23	0,0	cyclictest	0	-21	swapper/3	23:45:34	3
1694	99	23	0,0	cyclictest	0	-21	swapper/3	23:10:17	3
1694	99	23	0,0	cyclictest	0	-21	swapper/3	21:20:57	3
1690	99	23	23,0	cyclictest	27773	-21	diskmemload	23:54:06	2
1690	99	23	23,0	cyclictest	27773	-21	diskmemload	23:45:32	2
1690	99	23	23,0	cyclictest	0	-21	swapper/2	22:49:11	2
1690	99	23	23,0	cyclictest	0	-21	swapper/2	00:30:37	2
1690	99	23	23,0	cyclictest	0	-21	swapper/2	00:16:30	2
1690	99	23	21,1	cyclictest	29361	-21	apt-get	23:05:02	2
1690	99	23	21,1	cyclictest	0	-21	swapper/2	23:22:20	2
1690	99	23	20,2	cyclictest	27773	-21	diskmemload	21:50:50	2
1690	99	23	19,0	cyclictest	0	-21	swapper/2	21:30:03	2
1690	99	23	0,2	cyclictest	26460	-21	sed	22:05:01	2
1690	99	23	0,23	cyclictest	0	-21	swapper/2	22:40:46	2
1690	99	23	0,23	cyclictest	0	-21	swapper/2	22:13:36	2
1690	99	23	0,23	cyclictest	0	-21	swapper/2	22:06:19	2
1690	99	23	0,23	cyclictest	0	-21	swapper/2	22:06:19	2
1690	99	23	0,23	cyclictest	0	-21	swapper/2	21:12:42	2
1690	99	23	0,23	cyclictest	0	-21	swapper/2	00:39:22	2
1690	99	23	0,22	cyclictest	24968	-21	tr	23:01:10	2
1690	99	23	0,0	cyclictest	27773	-21	diskmemload	21:36:01	2
1690	99	23	0,0	cyclictest	27773	-21	diskmemload	00:12:15	2
1690	99	23	0,0	cyclictest	0	-21	swapper/2	23:56:11	2
1690	99	23	0,0	cyclictest	0	-21	swapper/2	23:25:23	2
1690	99	23	0,0	cyclictest	0	-21	swapper/2	22:57:20	2
1689	99	23	23,0	cyclictest	0	-21	swapper/1	22:47:10	1
1689	99	23	23,0	cyclictest	0	-21	swapper/1	21:58:26	1
1689	99	23	23,0	cyclictest	0	-21	swapper/1	21:47:27	1
1689	99	23	23,0	cyclictest	0	-21	swapper/1	21:32:05	1
1689	99	23	23,0	cyclictest	0	-21	swapper/1	00:15:15	1
1689	99	23	22,1	cyclictest	27773	-21	diskmemload	00:26:02	1
1689	99	23	21,1	cyclictest	19945	-21	ssh	23:52:35	1
1689	99	23	21,1	cyclictest	0	-21	swapper/1	21:11:46	1
1689	99	23	20,2	cyclictest	18789	-21	ssh	22:55:32	1
1689	99	23	20,2	cyclictest	10871	-21	rm	21:21:21	1
1689	99	23	0,2	cyclictest	2941	-21	sh	21:44:04	1
1689	99	23	0,23	cyclictest	0	-21	swapper/1	23:46:07	1
1689	99	23	0,23	cyclictest	0	-21	swapper/1	23:00:39	1
1689	99	23	0,23	cyclictest	0	-21	swapper/1	22:05:37	1
1689	99	23	0,23	cyclictest	0	-21	swapper/1	22:05:37	1
1689	99	23	0,23	cyclictest	0	-21	swapper/1	21:50:54	1
1689	99	23	0,22	cyclictest	6129	-21	idleruntime-cro	20:25:00	1
1689	99	23	0,22	cyclictest	4723	-21	ssh	00:38:30	1
1689	99	23	0,22	cyclictest	28103	-21	acpi	00:31:10	1
1689	99	23	0,22	cyclictest	27796	-21	perf	21:10:00	1
1689	99	23	0,22	cyclictest	27773	-21	diskmemload	23:10:21	1
1689	99	23	0,22	cyclictest	26295	-21	awk	22:05:00	1
1689	99	23	0,22	cyclictest	1214	-21	sh	00:05:38	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2020-09-17 - 11:29