OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #8

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: 50 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 rack9slot8s.osadl.org (updated Wed Sep 17, 2025 00:44:46)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
818	50	182	0,0	irq/46-4a100000	410	-21	seq	19:05:21	0
1024	99	115	31,0	cyclictest	8131	-21	ssh	23:02:58	0
1024	99	114	31,0	cyclictest	11401	-21	latency_hist	23:10:00	0
1024	99	112	9,0	cyclictest	20281	-21	ssh	21:11:07	0
1024	99	111	26,0	cyclictest	11816	-21	rm	00:20:02	0
1024	99	111	23,0	cyclictest	13128	-21	ssh	23:13:41	0
1024	99	111	16,0	cyclictest	17952	-21	apt-get	22:15:41	0
1024	99	111	10,0	cyclictest	15930	-21	ssh	22:10:29	0
1024	99	110	21,0	cyclictest	4334	-21	munin-run	22:54:57	0
1024	99	110	10,0	cyclictest	29035	-21	ssh	22:38:25	0
1024	99	109	30,0	cyclictest	24555	-21	ssh	23:38:01	0
1024	99	109	27,0	cyclictest	30755	-21	ssh	23:51:09	0
1024	99	109	20,0	cyclictest	5248	-21	ssh	00:05:54	0
1024	99	109	13,0	cyclictest	20918	-21	ssh	00:39:25	0
1024	99	108	21,0	cyclictest	28508	-21	ssh	23:46:20	0
1024	99	108	21,0	cyclictest	14002	-21	ssh	23:15:25	0
1024	99	108	14,0	cyclictest	12015	-21	munin-run	20:19:53	0
1024	99	108	11,0	cyclictest	22420	-21	ssh	22:24:23	0
1024	99	107	29,0	cyclictest	30199	-21	ssh	21:32:03	0
1024	99	107	28,0	cyclictest	24724	-21	ssh	21:20:23	0
1024	99	107	18,0	cyclictest	15239	-21	ssh	00:27:15	0
1024	99	107	11,0	cyclictest	6562	-21	rm	21:50:27	0
1024	99	107	11,0	cyclictest	23399	-21	ssh	22:26:21	0
1024	99	106	30,0	cyclictest	22936	-21	kworker/u2:4	21:35:02	0
1024	99	106	30,0	cyclictest	18444	-21	ssh	23:24:59	0
1024	99	106	25,0	cyclictest	13916	-21	ssh	00:24:34	0
1024	99	106	20,0	cyclictest	9031	-21	sh	21:55:57	0
1024	99	106	20,0	cyclictest	29858	-21	ssh	22:40:02	0
1024	99	106	12,0	cyclictest	14828	-21	rs:main		0
1024	99	105	28,0	cyclictest	7510	-21	ssh	00:10:44	0
1024	99	105	28,0	cyclictest	5376	-21	ssh	22:57:05	0
1024	99	105	27,0	cyclictest	14597	-21	sshd	20:35:28	0
1024	99	105	25,0	cyclictest	2256	-21	ssh	21:41:30	0
1024	99	105	23,0	cyclictest	9486	-21	sshd	20:02:28	0
1024	99	105	23,0	cyclictest	1486	-21	ssh	23:58:00	0
1024	99	105	19,0	cyclictest	12413	-21	ssh	22:03:11	0
1024	99	105	17,0	cyclictest	9041	-21	sendmail	19:59:53	0
1024	99	105	13,0	cyclictest	32662	-21	kworker/u2:2	22:09:57	0
1024	99	105	10,0	cyclictest	18145	-21	munin-run	20:59:55	0
1024	99	104	23,0	cyclictest	22441	-21	ssh	23:33:32	0
1024	99	104	23,0	cyclictest	2214	-21	grep	19:14:58	0
1024	99	104	18,0	cyclictest	23246	-21	ssh	21:17:23	0
1024	99	104	18,0	cyclictest	18643	-21	ssh	23:25:14	0
1024	99	104	14,0	cyclictest	6118	-21	munin-run	21:49:55	0
1024	99	104	13,0	cyclictest	2788	-21	ssh	00:00:38	0
1024	99	104	12,0	cyclictest	32490	-21	ssh	22:45:38	0
1024	99	104	12,0	cyclictest	26272	-21	ssh	23:41:35	0
1024	99	103	9,0	cyclictest	27845	-21	ssh	21:27:05	0
1024	99	103	28,0	cyclictest	25109	-21	apt-config	22:30:02	0
1024	99	103	21,0	cyclictest	12937	-21	cron	20:24:52	0
1024	99	103	20,0	cyclictest	18443	-21	kworker/u2:1	21:09:56	0
1024	99	103	13,0	cyclictest	18047	-21	ssh	00:33:18	0
1024	99	102	9,0	cyclictest	8309	-21	munin-run	19:54:52	0
1024	99	102	25,0	cyclictest	7503	-21	sshd	19:49:26	0
1024	99	102	16,0	cyclictest	16667	-21	munin-run	20:49:53	0
1024	99	102	12,0	cyclictest	1383	-21	apt-get	19:10:23	0
1024	99	101	37,0	cyclictest	818	50	irq/46-4a100000	20:41:54	0
1024	99	101	23,0	cyclictest	10951	-21	sshd	20:12:28	0
1024	99	100	21,0	cyclictest	4174	-21	sshd	19:26:26	0
1024	99	100	16,0	cyclictest	4878	-21	kworker/u2:2	19:39:51	0
1024	99	100	13,0	cyclictest	13702	-21	modprobe	20:29:54	0
1024	99	99	21,0	cyclictest	819	50	irq/47-4a100000	20:54:25	0
1024	99	99	19,0	cyclictest	6771	-21	sshd	19:44:27	0
1024	99	98	15,0	cyclictest	10059	-21	runrttasks	20:06:09	0
1024	99	97	8,0	cyclictest	15173	-21	snmpd	19:34:34	0
1024	99	97	15,0	cyclictest	18898	-21	munin-run	21:04:55	0
1024	99	95	29,0	cyclictest	13262	-21	kworker/u2:2	20:31:11	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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