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 Dec 26, 2025 12:46:31)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1930591	2	295	260,27	sleep0	0	-21	swapper/0	07:07:13	0
1930567	2	288	266,14	sleep7	0	-21	swapper/7	07:06:55	7
1930554	2	288	268,13	sleep3	0	-21	swapper/3	07:06:44	3
1930723	2	286	266,13	sleep2	0	-21	swapper/2	07:09:08	2
1930587	2	286	266,13	sleep5	0	-21	swapper/5	07:07:10	5
1930662	2	285	265,13	sleep6	0	-21	swapper/6	07:08:16	6
1930502	2	285	266,12	sleep1	0	-21	swapper/1	07:06:01	1
1930624	2	283	263,13	sleep4	0	-21	swapper/4	07:07:40	4
1931234	99	36	30,5	cyclictest	870	-21	snmpd	11:42:27	4
1931234	99	35	0,32	cyclictest	0	-21	swapper/4	08:42:51	4
1931234	99	34	29,4	cyclictest	870	-21	snmpd	12:31:52	4
1931234	99	34	29,4	cyclictest	870	-21	snmpd	11:13:50	4
1931234	99	34	0,33	cyclictest	0	-21	swapper/4	10:49:18	4
1931245	99	33	28,5	cyclictest	870	-21	snmpd	10:48:25	7
1931239	99	33	30,2	cyclictest	870	-21	snmpd	09:30:24	5
1931239	99	33	30,2	cyclictest	1952930	-21	cat	07:50:14	5
1931239	99	33	29,3	cyclictest	870	-21	snmpd	07:49:01	5
1931239	99	33	29,3	cyclictest	870	-21	snmpd	07:49:01	5
1931234	99	33	30,2	cyclictest	870	-21	snmpd	12:37:07	4
1931234	99	33	30,2	cyclictest	870	-21	snmpd	08:14:17	4
1931234	99	33	29,3	cyclictest	870	-21	snmpd	07:43:10	4
1931234	99	33	29,3	cyclictest	870	-21	snmpd	07:43:09	4
1931232	99	33	30,2	cyclictest	870	-21	snmpd	08:24:49	3
1931232	99	33	30,2	cyclictest	2029845	-21	cat	10:20:16	3
1931232	99	33	0,30	cyclictest	0	-21	swapper/3	12:33:57	3
1931229	99	33	30,2	cyclictest	870	-21	snmpd	11:36:12	2
1931229	99	33	30,2	cyclictest	1849915	-21	ntpd	10:16:41	2
1931227	99	33	30,2	cyclictest	870	-21	snmpd	09:18:54	1
1931222	99	33	1,31	cyclictest	2052799	-21	ntp_states	11:05:21	0
1931245	99	32	30,2	cyclictest	870	-21	snmpd	12:37:37	7
1931245	99	32	30,2	cyclictest	2074878	-21	cat	11:50:18	7
1931245	99	32	30,1	cyclictest	870	-21	snmpd	07:27:57	7
1931245	99	32	29,2	cyclictest	870	-21	snmpd	12:25:49	7
1931245	99	32	29,2	cyclictest	870	-21	snmpd	10:58:45	7
1931245	99	32	29,2	cyclictest	870	-21	snmpd	08:37:49	7
1931245	99	32	0,30	cyclictest	0	-21	swapper/7	09:39:49	7
1931245	99	32	0,30	cyclictest	0	-21	swapper/7	09:39:48	7
1931242	99	32	30,2	cyclictest	870	-21	snmpd	11:34:59	6
1931242	99	32	30,2	cyclictest	870	-21	snmpd	08:54:06	6
1931239	99	32	28,3	cyclictest	870	-21	snmpd	08:02:10	5
1931239	99	32	0,31	cyclictest	0	-21	swapper/5	12:25:15	5
1931239	99	32	0,31	cyclictest	0	-21	swapper/5	09:36:46	5
1931239	99	32	0,31	cyclictest	0	-21	swapper/5	09:36:45	5
1931239	99	32	0,31	cyclictest	0	-21	swapper/5	07:13:38	5
1931234	99	32	30,2	cyclictest	870	-21	snmpd	10:14:27	4
1931234	99	32	30,2	cyclictest	870	-21	snmpd	09:23:58	4
1931234	99	32	30,2	cyclictest	870	-21	snmpd	07:47:22	4
1931234	99	32	30,2	cyclictest	870	-21	snmpd	07:47:21	4
1931234	99	32	29,2	cyclictest	870	-21	snmpd	12:12:57	4
1931234	99	32	0,31	cyclictest	0	-21	swapper/4	10:25:15	4
1931234	99	32	0,31	cyclictest	0	-21	swapper/4	09:38:13	4
1931234	99	32	0,31	cyclictest	0	-21	swapper/4	09:38:12	4
1931234	99	32	0,31	cyclictest	0	-21	swapper/4	08:01:27	4
1931234	99	32	0,30	cyclictest	0	-21	swapper/4	09:34:34	4
1931234	99	32	0,29	cyclictest	0	-21	swapper/4	09:13:40	4
1931232	99	32	30,2	cyclictest	1950434	-21	cat	07:45:14	3
1931232	99	32	30,2	cyclictest	1950434	-21	cat	07:45:14	3
1931232	99	32	30,1	cyclictest	870	-21	snmpd	10:29:51	3
1931232	99	32	30,1	cyclictest	870	-21	snmpd	08:14:56	3
1931232	99	32	29,2	cyclictest	870	-21	snmpd	07:20:24	3
1931232	99	32	29,2	cyclictest	870	-21	snmpd	07:13:30	3
1931232	99	32	0,31	cyclictest	0	-21	swapper/3	09:56:52	3
1931232	99	32	0,30	cyclictest	0	-21	swapper/3	10:31:03	3
1931229	99	32	30,1	cyclictest	870	-21	snmpd	11:31:28	2
1931229	99	32	30,1	cyclictest	870	-21	snmpd	10:26:44	2
1931229	99	32	29,2	cyclictest	870	-21	snmpd	12:06:37	2
1931229	99	32	29,2	cyclictest	870	-21	snmpd	11:27:38	2
1931229	99	32	29,2	cyclictest	870	-21	snmpd	11:27:38	2
1931229	99	32	29,2	cyclictest	870	-21	snmpd	10:00:23	2
1931229	99	32	29,2	cyclictest	870	-21	snmpd	08:02:58	2
1931229	99	32	29,2	cyclictest	1849915	-21	ntpd	11:56:41	2
1931229	99	32	0,31	cyclictest	0	-21	swapper/2	12:35:12	2
1931227	99	32	30,2	cyclictest	870	-21	snmpd	08:58:09	1
1931227	99	32	29,2	cyclictest	870	-21	snmpd	08:38:04	1
1931227	99	32	0,31	cyclictest	0	-21	swapper/1	11:48:11	1
1931227	99	32	0,30	cyclictest	0	-21	swapper/1	07:33:16	1
1931222	99	32	30,2	cyclictest	870	-21	snmpd	08:02:31	0
1931222	99	32	30,2	cyclictest	870	-21	snmpd	07:58:21	0
1931222	99	32	30,2	cyclictest	2057365	-21	cat	11:15:16	0
1931222	99	32	30,2	cyclictest	1945390	-21	cat	07:35:17	0
1931222	99	32	30,2	cyclictest	0	-21	swapper/0	07:28:18	0
1931222	99	32	29,2	cyclictest	870	-21	snmpd	10:02:05	0
1931222	99	32	28,3	cyclictest	0	-21	swapper/0	10:35:41	0
1931222	99	32	0,31	cyclictest	0	-21	swapper/0	12:06:06	0
1931245	99	31	30,1	cyclictest	870	-21	snmpd	10:12:57	7
1931245	99	31	30,1	cyclictest	870	-21	snmpd	09:53:35	7
1931245	99	31	30,1	cyclictest	870	-21	snmpd	07:40:10	7
1931245	99	31	30,1	cyclictest	870	-21	snmpd	07:40:09	7
1931245	99	31	29,2	cyclictest	870	-21	snmpd	11:55:44	7
1931245	99	31	28,2	cyclictest	870	-21	snmpd	11:32:59	7
1931245	99	31	28,2	cyclictest	2057346	-21	cat	11:15:16	7
1931245	99	31	26,1	cyclictest	870	-21	snmpd	07:17:06	7
1931245	99	31	0,30	cyclictest	0	-21	swapper/7	12:01:24	7
1931245	99	31	0,30	cyclictest	0	-21	swapper/7	09:43:08	7
1931245	99	31	0,30	cyclictest	0	-21	swapper/7	09:43:08	7
1931245	99	31	0,30	cyclictest	0	-21	swapper/7	09:06:27	7
1931245	99	31	0,29	cyclictest	0	-21	swapper/7	09:45:49	7
1931245	99	31	0,1	cyclictest	0	-21	swapper/7	11:14:38	7
1931242	99	31	30,1	cyclictest	870	-21	snmpd	09:11:18	6
1931242	99	31	30,1	cyclictest	870	-21	snmpd	07:49:28	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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