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From: arisawa <arisawa@ar.aichi-u.ac.jp>
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Date: Thu, 12 May 2016 22:06:43 +0900
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To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] cpu command latency
Topicbox-Message-UUID: 8ee5bd96-ead9-11e9-9d60-3106f5b1d025

Hello,

> 2016/05/11 22:44=E3=80=81Kenny Lasse Hoff Levinsen =
<kennylevinsen@gmail.com> =E3=81=AE=E3=83=A1=E3=83=BC=E3=83=AB=EF=BC=9A
>=20
> Delete the channel from /srv in the loop to test a full remote mount =
dance, including the initial dial. It shouldn't take 3s to dial, though.
thanks for the advice.
I retried

for(i in 1 2 3){
	time 9fs $host
	#unmount /n/$host
	rm /srv/$host
	sleep 3
}

term% try -m sources outside.plan9.bell-labs.com arisawa
post...
0.00u 0.01s 1.31r 	 9fs sources
post...
0.00u 0.03s 0.69r 	 9fs sources
post...
0.00u 0.00s 0.58r 	 9fs sources
term%=20

term% try -m sources outside.plan9.bell-labs.com arisawa
post...
0.00u 0.01s 1.30r 	 9fs sources
post...
0.00u 0.01s 0.60r 	 9fs sources
post...
0.00u 0.01s 0.55r 	 9fs sources
term%=20

for(i in 1 2 3){
	time 9fs $host
	unmount /n/$host
	#rm /srv/$host
	sleep 3
}

term% try -m sources outside.plan9.bell-labs.com arisawa
post...
0.00u 0.00s 1.25r 	 9fs sources
0.00u 0.01s 0.18r 	 9fs sources
0.00u 0.00s 0.19r 	 9fs sources
term%=20

term% try -m sources outside.plan9.bell-labs.com arisawa
post...
0.00u 0.00s 1.26r 	 9fs sources
0.00u 0.00s 0.19r 	 9fs sources
0.00u 0.01s 0.20r 	 9fs sources
term%=20

the values reported yesterday are:
0.00u 0.00s 3.73r 	 9fs sources
0.00u 0.00s 0.71r 	 9fs sources
0.00u 0.00s 0.21r 	 9fs sources
which shows mount latency depends much on the network condition.