OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #0

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.

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 r0s0s.osadl.org (updated Fri Nov 07, 2025 00:46:30)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2071268	2	341	330,6	sleep3	0	-21	swapper/3	19:10:00	3
2071082	2	297	260,12	sleep6	0	-21	swapper/6	19:07:31	6
2070940	2	293	259,26	sleep2	0	-21	swapper/2	19:05:33	2
2071107	2	292	271,13	sleep4	0	-21	swapper/4	19:07:52	4
2071056	2	292	284,5	sleep1	0	-21	swapper/1	19:07:09	1
2071146	2	290	256,26	sleep5	0	-21	swapper/5	19:08:25	5
2071157	2	289	270,12	sleep7	0	-21	swapper/7	19:08:36	7
2071240	2	287	266,13	sleep3	0	-21	swapper/3	19:09:37	3
2071008	2	286	266,13	sleep0	0	-21	swapper/0	19:06:29	0
2071739	99	43	35,7	cyclictest	2117176	-21	kworker/u16:0+flush-8:0	20:50:15	1
2071744	99	36	30,2	cyclictest	833	-21	snmpd	20:09:30	6
2071742	99	36	33,2	cyclictest	2209908	-21	ntpq	23:55:23	4
2071742	99	35	30,4	cyclictest	833	-21	snmpd	21:28:53	4
2071745	99	34	0,33	cyclictest	0	-21	swapper/7	22:15:15	7
2071742	99	34	0,30	cyclictest	0	-21	swapper/4	20:06:36	4
2071739	99	34	30,3	cyclictest	0	-21	swapper/1	23:23:46	1
2071745	99	33	30,2	cyclictest	833	-21	snmpd	20:40:16	7
2071745	99	33	30,2	cyclictest	833	-21	snmpd	20:40:15	7
2071744	99	33	30,2	cyclictest	833	-21	snmpd	23:42:24	6
2071744	99	33	30,2	cyclictest	833	-21	snmpd	21:51:42	6
2071744	99	33	0,30	cyclictest	0	-21	swapper/6	00:04:55	6
2071743	99	33	30,2	cyclictest	833	-21	snmpd	19:37:27	5
2071743	99	33	30,2	cyclictest	833	-21	snmpd	00:00:46	5
2071742	99	33	30,2	cyclictest	833	-21	snmpd	23:27:12	4
2071742	99	33	30,2	cyclictest	833	-21	snmpd	19:55:17	4
2071742	99	33	30,2	cyclictest	833	-21	snmpd	19:28:01	4
2071740	99	33	30,2	cyclictest	833	-21	snmpd	22:45:01	2
2071740	99	33	0,30	cyclictest	0	-21	swapper/2	23:40:15	2
2071740	99	33	0,30	cyclictest	0	-21	swapper/2	21:25:59	2
2071739	99	33	30,2	cyclictest	833	-21	snmpd	20:30:25	1
2071738	99	33	30,2	cyclictest	833	-21	snmpd	00:26:35	0
2071738	99	33	30,2	cyclictest	833	-21	snmpd	00:26:35	0
2071745	99	32	30,1	cyclictest	833	-21	snmpd	21:54:13	7
2071745	99	32	30,1	cyclictest	833	-21	snmpd	19:38:53	7
2071745	99	32	30,1	cyclictest	833	-21	snmpd	00:02:37	7
2071745	99	32	29,2	cyclictest	2111010	-21	cat	20:30:18	7
2071745	99	32	0,31	cyclictest	0	-21	swapper/7	21:10:01	7
2071744	99	32	29,2	cyclictest	833	-21	snmpd	20:54:53	6
2071744	99	32	29,2	cyclictest	833	-21	snmpd	19:26:50	6
2071744	99	32	0,30	cyclictest	2088820	2	sleep6	19:45:11	6
2071744	99	32	0,30	cyclictest	0	-21	swapper/6	22:33:16	6
2071744	99	32	0,30	cyclictest	0	-21	swapper/6	22:33:16	6
2071743	99	32	30,2	cyclictest	833	-21	snmpd	21:12:38	5
2071743	99	32	30,2	cyclictest	833	-21	snmpd	00:25:41	5
2071743	99	32	30,2	cyclictest	833	-21	snmpd	00:25:41	5
2071743	99	32	29,2	cyclictest	833	-21	snmpd	22:50:59	5
2071743	99	32	0,30	cyclictest	0	-21	swapper/5	23:45:24	5
2071742	99	32	30,2	cyclictest	2161551	-21	cat	22:15:15	4
2071742	99	32	30,1	cyclictest	833	-21	snmpd	22:27:59	4
2071742	99	32	30,1	cyclictest	833	-21	snmpd	22:27:58	4
2071742	99	32	30,1	cyclictest	833	-21	snmpd	00:22:25	4
2071742	99	32	29,2	cyclictest	833	-21	snmpd	22:09:45	4
2071742	99	32	29,2	cyclictest	833	-21	snmpd	20:37:46	4
2071742	99	32	29,2	cyclictest	833	-21	snmpd	20:37:45	4
2071742	99	32	0,30	cyclictest	0	-21	swapper/4	21:46:51	4
2071741	99	32	30,2	cyclictest	833	-21	snmpd	22:46:04	3
2071741	99	32	0,31	cyclictest	0	-21	swapper/3	20:08:51	3
2071740	99	32	30,1	cyclictest	833	-21	snmpd	22:26:40	2
2071740	99	32	30,1	cyclictest	833	-21	snmpd	22:26:40	2
2071740	99	32	30,1	cyclictest	833	-21	snmpd	22:15:37	2
2071740	99	32	30,1	cyclictest	833	-21	snmpd	20:25:00	2
2071740	99	32	29,2	cyclictest	833	-21	snmpd	21:17:08	2
2071740	99	32	29,2	cyclictest	833	-21	snmpd	20:36:01	2
2071740	99	32	29,2	cyclictest	833	-21	snmpd	20:36:00	2
2071740	99	32	0,31	cyclictest	0	-21	swapper/2	23:21:00	2
2071740	99	32	0,30	cyclictest	0	-21	swapper/2	19:31:23	2
2071739	99	32	30,2	cyclictest	833	-21	snmpd	21:25:32	1
2071739	99	32	30,1	cyclictest	833	-21	snmpd	23:10:47	1
2071739	99	32	30,1	cyclictest	833	-21	snmpd	21:05:32	1
2071739	99	32	30,1	cyclictest	833	-21	snmpd	19:51:23	1
2071739	99	32	29,2	cyclictest	833	-21	snmpd	19:21:26	1
2071739	99	32	29,2	cyclictest	2176272	-21	cat	22:45:17	1
2071739	99	32	0,31	cyclictest	0	-21	swapper/1	22:37:58	1
2071739	99	32	0,31	cyclictest	0	-21	swapper/1	20:03:56	1
2071739	99	32	0,30	cyclictest	0	-21	swapper/1	00:07:40	1
2071738	99	32	30,2	cyclictest	833	-21	snmpd	23:21:45	0
2071738	99	32	30,2	cyclictest	833	-21	snmpd	00:36:05	0
2071738	99	32	30,1	cyclictest	833	-21	snmpd	22:45:04	0
2071738	99	32	29,2	cyclictest	833	-21	snmpd	21:35:20	0
2071738	99	32	0,31	cyclictest	0	-21	swapper/0	23:11:08	0
2071745	99	31	30,1	cyclictest	833	-21	snmpd	19:25:01	7
2071745	99	31	30,1	cyclictest	833	-21	snmpd	00:36:20	7
2071745	99	31	0,30	cyclictest	0	-21	swapper/7	22:55:15	7
2071745	99	31	0,30	cyclictest	0	-21	swapper/7	22:47:35	7
2071745	99	31	0,30	cyclictest	0	-21	swapper/7	22:12:04	7
2071745	99	31	0,30	cyclictest	0	-21	swapper/7	20:26:51	7
2071745	99	31	0,30	cyclictest	0	-21	swapper/7	00:06:22	7
2071745	99	31	0,29	cyclictest	0	-21	swapper/7	21:04:22	7
2071745	99	31	0,1	cyclictest	0	-21	swapper/7	22:30:44	7
2071745	99	31	0,1	cyclictest	0	-21	swapper/7	22:30:43	7
2071744	99	31	30,1	cyclictest	833	-21	snmpd	23:57:40	6
2071744	99	31	30,1	cyclictest	833	-21	snmpd	23:48:54	6
2071744	99	31	30,1	cyclictest	833	-21	snmpd	22:05:42	6
2071744	99	31	30,1	cyclictest	833	-21	snmpd	21:23:53	6
2071744	99	31	30,1	cyclictest	833	-21	snmpd	21:10:47	6
2071744	99	31	30,1	cyclictest	833	-21	snmpd	00:21:59	6
2071744	99	31	30,1	cyclictest	833	-21	snmpd	00:16:43	6
2071744	99	31	28,2	cyclictest	833	-21	snmpd	20:34:27	6
2071744	99	31	0,30	cyclictest	0	-21	swapper/6	23:54:34	6
2071744	99	31	0,30	cyclictest	0	-21	swapper/6	21:26:12	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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