OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #0, slot #2

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 rack0slot2.osadl.org (updated Sat Jan 25, 2025 00:43:35)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1766863	2	55	19,31	sleep7	0	-21	swapper/7	19:06:33	7
1766870	2	50	39,7	sleep4	0	-21	swapper/4	19:06:38	4
1767327	99	42	39,2	cyclictest	2147229	-21	sed	22:39:03	7
1767327	99	40	0,38	cyclictest	2095867	-21	latency_hist	22:09:03	7
1766813	2	37	26,8	sleep5	0	-21	swapper/5	19:05:51	5
1767327	99	31	28,2	cyclictest	1901337	-21	perf	20:14:03	7
1767317	99	31	29,2	cyclictest	1983294	-21	kworker/u16:4+events_unbound	21:29:14	4
1766805	2	27	17,7	sleep6	0	-21	swapper/6	19:05:44	6
1767322	99	26	24,2	cyclictest	1856705	-21	kworker/u16:3+flush-8:0	19:54:20	6
1767322	99	25	23,2	cyclictest	1890741	-21	kworker/u16:0+events_unbound	20:49:13	6
1767322	99	25	23,2	cyclictest	1890741	-21	kworker/u16:0+events_unbound	20:49:13	6
1767317	99	25	22,2	cyclictest	1921029	-21	kworker/u16:2+events_unbound	20:44:04	4
1767327	99	24	0,22	cyclictest	2178230	-21	latency_hist	22:59:03	7
1767322	99	24	22,2	cyclictest	2056149	-21	kworker/u16:1+events_unbound	21:39:30	6
1767317	99	24	22,2	cyclictest	2096287	-21	kworker/u16:3+flush-8:0	23:39:32	4
1767317	99	24	22,2	cyclictest	2096287	-21	kworker/u16:3+events_unbound	22:59:16	4
1767317	99	24	22,2	cyclictest	1681941	-21	kworker/u16:0+events_unbound	19:29:05	4
1767317	99	24	21,2	cyclictest	1856705	-21	kworker/u16:3+flush-8:0	20:19:31	4
1767317	99	23	21,2	cyclictest	2200959	-21	kworker/u16:5+flush-8:0	00:34:23	4
1767327	99	22	20,1	cyclictest	2323976	-21	munin-run	00:34:02	7
1767322	99	22	20,2	cyclictest	2200959	-21	kworker/u16:5+flush-8:0	00:33:57	6
1767317	99	21	19,2	cyclictest	2056149	-21	kworker/u16:1+flush-8:0	21:59:32	4
1991845	2	20	0,1	chrt	1991844	-21	sed	20:59:30	7
1934273	2	20	0,1	chrt	1934272	-21	grep	20:29:25	7
1767322	99	20	18,2	cyclictest	2200959	-21	kworker/u16:5+events_unbound	23:59:00	6
1767322	99	20	18,2	cyclictest	2200959	-21	kworker/u16:5+events_unbound	23:59:00	6
1767322	99	20	18,2	cyclictest	2064499	-21	kworker/u16:2+events_unbound	23:01:31	6
1767322	99	20	18,2	cyclictest	1890741	-21	kworker/u16:0+events_unbound	20:16:46	6
1767322	99	20	18,2	cyclictest	1757905	-21	kworker/u16:4+events_unbound	19:27:16	6
1767320	99	20	17,2	cyclictest	1983294	-21	kworker/u16:4+events_unbound	21:14:17	5
1767317	99	20	16,3	cyclictest	1757905	-21	kworker/u16:4+flush-8:0	20:04:24	4
1767322	99	19	17,2	cyclictest	2282479	-21	kworker/u16:2+events_unbound	00:15:08	6
1767322	99	19	17,2	cyclictest	2200959	-21	kworker/u16:5+events_unbound	00:06:12	6
1767322	99	19	17,2	cyclictest	2096287	-21	kworker/u16:3+events_unbound	23:43:26	6
1767322	99	19	17,2	cyclictest	2064499	-21	kworker/u16:2+flush-8:0	22:15:36	6
1767322	99	19	17,2	cyclictest	2002637	-21	kworker/u16:0+events_unbound	21:23:11	6
1767322	99	19	17,2	cyclictest	1983294	-21	kworker/u16:4+events_unbound	21:16:38	6
1767322	99	19	17,2	cyclictest	1737192	-21	kworker/u16:1+events_unbound	19:13:45	6
1767322	99	19	16,2	cyclictest	1983294	-21	kworker/u16:4+events_unbound	21:09:05	6
1767317	99	19	17,2	cyclictest	1983294	-21	kworker/u16:4+flush-8:0	21:04:33	4
1767317	99	19	17,2	cyclictest	1757905	-21	kworker/u16:4+flush-8:0	19:49:29	4
1767317	99	19	17,2	cyclictest	1493113	-21	kworker/u16:2+events_unbound	19:54:06	4
1767327	99	18	17,0	cyclictest	0	-21	swapper/7	23:43:31	7
1767322	99	18	16,2	cyclictest	2282479	-21	kworker/u16:2+events_unbound	00:12:43	6
1767322	99	18	16,2	cyclictest	2200959	-21	kworker/u16:5+events_unbound	23:38:51	6
1767322	99	18	16,2	cyclictest	2200959	-21	kworker/u16:5+events_unbound	00:23:28	6
1767322	99	18	16,2	cyclictest	2199075	-21	kworker/u16:4+events_unbound	23:53:14	6
1767322	99	18	16,2	cyclictest	2064499	-21	kworker/u16:2+flush-8:0	22:34:28	6
1767322	99	18	16,2	cyclictest	1890741	-21	kworker/u16:0+flush-8:0	20:09:47	6
1767322	99	18	16,2	cyclictest	1856705	-21	kworker/u16:3+events_unbound	19:50:37	6
1767322	99	18	16,2	cyclictest	1757905	-21	kworker/u16:4+events_unbound	20:06:19	6
1767322	99	18	15,2	cyclictest	2033402	-21	kworker/u16:3+events_unbound	21:54:06	6
1767317	99	18	15,2	cyclictest	2064499	-21	kworker/u16:2+events_unbound	22:24:05	4
1767322	99	17	15,2	cyclictest	2200959	-21	kworker/u16:5+events_unbound	23:16:18	6
1767322	99	17	15,2	cyclictest	2200959	-21	kworker/u16:5+events_unbound	00:37:40	6
1767322	99	17	15,2	cyclictest	2199075	-21	kworker/u16:4+events_unbound	00:01:37	6
1767322	99	17	15,2	cyclictest	2096287	-21	kworker/u16:3+events_unbound	22:12:38	6
1767322	99	17	15,2	cyclictest	2094620	-21	kworker/u16:0+events_unbound	22:21:29	6
1767322	99	17	15,2	cyclictest	2056149	-21	kworker/u16:1+events_unbound	22:46:48	6
1767322	99	17	15,2	cyclictest	1961222	-21	kworker/u16:1+events_unbound	21:05:55	6
1767322	99	17	15,2	cyclictest	1961222	-21	kworker/u16:1+events_unbound	21:01:27	6
1767322	99	17	15,2	cyclictest	1931495	-21	kworker/u16:3+events_unbound	20:39:05	6
1767322	99	17	15,2	cyclictest	1931495	-21	kworker/u16:3+events_unbound	20:35:42	6
1767322	99	17	14,2	cyclictest	2312502	-21	kworker/u16:3+events_unbound	00:24:44	6
1767322	99	17	14,2	cyclictest	2096287	-21	kworker/u16:3+events_unbound	23:27:56	6
1767317	99	17	15,2	cyclictest	2096287	-21	kworker/u16:3+events_unbound	22:54:17	4
1767317	99	17	15,2	cyclictest	2065521	-21	kworker/u16:4+flush-8:0	21:54:18	4
1767317	99	17	15,2	cyclictest	1972330	-21	kworker/u16:3+flush-8:0	20:59:14	4
1767317	99	17	15,2	cyclictest	1493113	-21	kworker/u16:2+events_unbound	19:34:16	4
1767327	99	16	15,0	cyclictest	0	-21	swapper/7	20:54:34	7
1767327	99	16	14,1	cyclictest	1851260	-21	awk	19:49:03	7
1767327	99	16	0,14	cyclictest	1302	-21	snmpd	19:17:00	7
1767327	99	16	0,14	cyclictest	1302	-21	snmpd	19:17:00	7
1767322	99	16	14,2	cyclictest	2094620	-21	kworker/u16:0+events_unbound	22:33:48	6
1767322	99	16	14,2	cyclictest	2065521	-21	kworker/u16:4+events_unbound	22:07:01	6
1767322	99	16	14,2	cyclictest	2064499	-21	kworker/u16:2+flush-8:0	23:08:50	6
1767322	99	16	14,2	cyclictest	2064499	-21	kworker/u16:2+flush-8:0	22:56:13	6
1767322	99	16	14,2	cyclictest	2064499	-21	kworker/u16:2+events_unbound	22:02:24	6
1767322	99	16	14,2	cyclictest	2056149	-21	kworker/u16:1+events_unbound	22:50:17	6
1767322	99	16	14,2	cyclictest	2056149	-21	kworker/u16:1+events_unbound	21:52:43	6
1767322	99	16	14,2	cyclictest	2044431	-21	kworker/u16:2+events_unbound	21:35:22	6
1767322	99	16	14,2	cyclictest	2044431	-21	kworker/u16:2+events_unbound	21:35:22	6
1767322	99	16	14,2	cyclictest	1983294	-21	kworker/u16:4+flush-8:0	21:24:30	6
1767322	99	16	14,2	cyclictest	1961222	-21	kworker/u16:1+events_unbound	21:29:40	6
1767322	99	16	14,2	cyclictest	1961222	-21	kworker/u16:1+events_unbound	20:55:49	6
1767322	99	16	14,2	cyclictest	1800860	-21	kworker/u16:3+events_unbound	19:40:19	6
1767322	99	16	14,2	cyclictest	1757905	-21	kworker/u16:4+events_unbound	20:00:31	6
1767322	99	16	14,2	cyclictest	1681941	-21	kworker/u16:0+flush-8:0	19:17:05	6
1767322	99	16	14,2	cyclictest	1681941	-21	kworker/u16:0+flush-8:0	19:17:05	6
1767322	99	16	13,2	cyclictest	2064499	-21	kworker/u16:2+events_unbound	22:25:37	6
1767322	99	16	0,15	cyclictest	1815993	-21	grep	19:29:27	6
1767317	99	16	14,2	cyclictest	2292601	-21	kworker/u16:1+events_unbound	00:17:07	4
1767317	99	16	14,2	cyclictest	2094620	-21	kworker/u16:0+events_unbound	22:21:35	4
1767317	99	16	14,2	cyclictest	1830191	-21	kworker/u16:1+events_unbound	19:39:23	4
1767317	99	16	14,2	cyclictest	1681941	-21	kworker/u16:0+events_unbound	19:14:10	4
1767317	99	16	14,2	cyclictest	1681941	-21	kworker/u16:0+events_unbound	19:14:10	4
1767327	99	15	11,3	cyclictest	1861380	-21	cat	19:54:03	7
1767327	99	15	0,13	cyclictest	1302	-21	snmpd	20:25:32	7
1767322	99	15	13,2	cyclictest	2200959	-21	kworker/u16:5+events_unbound	23:31:09	6
1767322	99	15	13,2	cyclictest	2199075	-21	kworker/u16:4+events_unbound	23:11:27	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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