From mboxrd@z Thu Jan  1 00:00:00 1970
From: erik quanstrom <quanstro@quanstro.net>
Date: Fri, 15 Oct 2010 10:07:18 -0400
To: 9fans@9fans.net
Message-ID: <cd070e8e56994d301a7af213b53f031d@plug.quanstro.net>
In-Reply-To: <AANLkTi=yCrhS3byca+R3b3-srOrdAHe7UQtVWHkvLJ-A@mail.gmail.com>
References: <AANLkTimvaNcf3hC8gPAXrFDDs3CKH2ZVa4siS_ihCQvx@mail.gmail.com>
	<AANLkTikCoXwEp=d6D4uCsU1pOBr=N-rFQARBPj7p_Qb7@mail.gmail.com>
	<AANLkTimZS1jvvGrtzxZhS=iM4rkje1t=PbYL-rCN1cEO@mail.gmail.com>
	<AANLkTinmSbZkCUE874O82Dt=gJaooET+s3_XVyZ_w82_@mail.gmail.com>
	<AANLkTin3O=va2Msv+3r96PKQjrSQqX5EuReh8k9PRdfC@mail.gmail.com>
	<AANLkTi=yCrhS3byca+R3b3-srOrdAHe7UQtVWHkvLJ-A@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="US-ASCII"
Content-Transfer-Encoding: 7bit
Subject: Re: [9fans] =?utf-8?b?z4Bw?=
Topicbox-Message-UUID: 65acc990-ead6-11e9-9d60-3106f5b1d025

> isn't tag field for this intended?

[...]

> so this means to me that a client can send some T-messages and then
> (or concurrently) wait the R-messages.
> in inferno from mount(1) and styxmon(8) i deduced that this case is
> also considered.
> it's true that most of the servers i seen until now doesn't take
> advantage of this feature, they respond to each T-message before
> processing next message.

there is no defined limit to the number of
outstanding tags allowed.  but keep in mind the
server may process them in any order, so whenever
you can't have dependencies between outstanding
requests.  servers can only respond to the requests
issued by the client.  in high latency cases (eg the
network latency is > than the time it takes to service
the request) the concurrency of the server might not
be very important.

- erik