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Default latency plot of system in rack #9, slot #2

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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 50 highest latencies:

System rack9slot2.osadl.org (updated Mon Jul 15, 2024 12:43:25)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3537	2	266	182,69	sleep1	0	-21	swapper/1		1
4092	2	258	177,50	sleep0	0	-21	swapper/0		0
4094	2	248	180,55	sleep2	0	-21	swapper/2		2
3544	2	237	185,39	sleep3	0	-21	swapper/3		3
28386	2	155	0,2	sleep2	0	-21	swapper/2		2
29351	2	47	0,2	sleep3	0	-21	swapper/3		3
4418	99	43	10,18	cyclictest	0	-21	swapper/2		2
19225	2	42	0,1	sleep3	19228	-21	sort		3
5875	2	41	0,3	sleep3	4422	99	cyclictest		3
4405	99	40	2,22	cyclictest	24503	-21	runrttasks		0
4405	99	39	11,25	cyclictest	6736	-21	cat		0
4405	99	36	2,27	cyclictest	14202	-21	apt-get		0
4405	99	36	15,19	cyclictest	8313	-21	cat		0
4405	99	36	15,19	cyclictest	6014	-21	seq		0
4418	99	35	0,32	cyclictest	17959	-21	sendmail-mta		2
4405	99	35	14,18	cyclictest	29262	-21	processes		0
4405	99	35	13,19	cyclictest	18681	-21	fw_packets		0
4405	99	35	12,20	cyclictest	3546	-21	seq		0
4405	99	35	11,21	cyclictest	2727	-21	awk		0
4405	99	35	0,3	cyclictest	13198	-21	/usr/sbin/munin		0
4418	99	34	14,17	cyclictest	8955	-21	sed		2
4418	99	34	12,19	cyclictest	12963	-21	sed		2
4405	99	34	14,18	cyclictest	6522	-21	munin-node		0
4405	99	34	13,19	cyclictest	6003	-21	cat		0
4405	99	34	13,18	cyclictest	27439	-21	sh		0
4405	99	34	12,20	cyclictest	24657	-21	forks		0
4405	99	34	12,19	cyclictest	22491	-21	date		0
4405	99	34	10,21	cyclictest	27498	-21	grep		0
4405	99	34	0,3	cyclictest	31295	-21	memory		0
4405	99	33	9,21	cyclictest	12788	-21	seq		0
4405	99	33	14,16	cyclictest	16148	-21	/usr/sbin/munin		0
4405	99	33	12,19	cyclictest	5783	-21	seq		0
4405	99	33	12,18	cyclictest	30971	-21	seq		0
4405	99	33	11,19	cyclictest	4480	-21	cut		0
4405	99	33	10,20	cyclictest	17063	-21	grep		0
4405	99	33	0,3	cyclictest	9028	-21	ntp_states		0
4405	99	33	0,3	cyclictest	26664	-21	df_inode		0
4405	99	33	0,2	cyclictest	9270	-21	seq		0
4418	99	32	4,26	cyclictest	1788	-21	procmail		2
4405	99	32	9,21	cyclictest	3456	-21	seq		0
4405	99	32	9,20	cyclictest	518	-21	entropy		0
4405	99	32	9,20	cyclictest	19081	-21	ntpq		0
4405	99	32	11,18	cyclictest	24317	-21	sh		0
4405	99	32	11,18	cyclictest	1532	-21	/usr/sbin/munin		0
4405	99	32	10,19	cyclictest	7928	-21	date		0
4405	99	32	0,2	cyclictest	9641	-21	df		0
4418	99	31	0,28	cyclictest	0	-21	swapper/2		2
4405	99	31	9,20	cyclictest	10650	-21	entropy		0
4405	99	31	9,19	cyclictest	3817	-21	cut		0
4405	99	31	9,19	cyclictest	22924	-21	unixbench-2d		0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2021-04-10 - 20:27