From: dorin bumbu <bumbudorin@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] πp
Date: Sat, 16 Oct 2010 02:30:42 +0300 [thread overview]
Message-ID: <AANLkTimWAOTVXkONNbM-fFXt-NjeAuM2gNS059nFBVVw@mail.gmail.com> (raw)
In-Reply-To: <d9d43a1aa634a5ef999566df7a7db0e7@plug.quanstro.net>
2010/10/16 erik quanstrom <quanstro@quanstro.net>:
> On Fri Oct 15 17:14:18 EDT 2010, bumbudorin@gmail.com wrote:
>> 2010/10/15 erik quanstrom <quanstro@quanstro.net>:
>> >> 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. [...]
>>
>> so the real problem is not 9p itself than the transport protocol: TCP/IP.
>
> the transport has nothing to do with it;
consider the following (imaginary) example:
let say that i want to watch a live videocast, and i am in kiev and
the video is emitted from seattle as a 9p service.
i'll mount that service in my local namespace, and my imaginary video
player istead of processig 9p messages in traditional way:
[...] TRead -> RRead -> TRead -> RRead -> TRead -> [...]
will have one thread that: [...] TRead -> TRead-> TRead->
TRead->TRead->TRead -> [...]
and another one that : [...] <-- t0 -->RRead -> RRead->
RRead -> RRead-> RRead-> RRead-> [...]
if transport protocol hasn't anything to do with, please explain me
what other drawbacks will be involved other than a t0 delay, if
latency would be constant?
>
>> i think that a solution might be to run 9p over an information
>> dispersal based protocol, to eliminate roundtrips but guaranteeing
>> reliability.
>
> the definitiion of 9p relies on having round trips.
i was reffering on TCP/IP's roundtrips for each package confirmation,
and not to eliminate 9p's round trips.
in 9p case i suggested to process some of them as i wrote on previous
lines, when high data traffic is involved, like in video streaming.
>
> - erik
>
>
next prev parent reply other threads:[~2010-10-15 23:30 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-13 19:46 Eric Van Hensbergen
2010-10-13 22:13 ` David Leimbach
2010-10-13 22:36 ` roger peppe
2010-10-13 23:15 ` David Leimbach
2010-10-14 4:25 ` blstuart
2010-10-13 23:24 ` Venkatesh Srinivas
2010-10-14 21:12 ` Latchesar Ionkov
2010-10-14 21:48 ` erik quanstrom
2010-10-14 22:14 ` dorin bumbu
2010-10-15 14:07 ` erik quanstrom
2010-10-15 14:45 ` Russ Cox
2010-10-15 15:41 ` Latchesar Ionkov
2010-10-15 21:13 ` dorin bumbu
2010-10-15 22:13 ` erik quanstrom
2010-10-15 23:30 ` dorin bumbu [this message]
2010-10-15 23:45 ` cinap_lenrek
2010-10-15 23:54 ` dorin bumbu
2010-10-15 7:24 ` Sape Mullender
2010-10-15 10:41 ` hiro
2010-10-15 12:11 ` Jacob Todd
2010-10-15 13:06 ` Iruatã Souza
2010-10-15 13:23 ` Sape Mullender
2010-10-15 14:57 ` David Leimbach
2010-10-15 14:54 ` David Leimbach
2010-10-15 14:59 ` Francisco J Ballesteros
2010-10-15 16:19 ` cinap_lenrek
2010-10-15 16:28 ` Lyndon Nerenberg
2010-10-15 17:54 ` Nemo
2010-10-15 17:49 ` ron minnich
2010-10-15 18:56 ` erik quanstrom
2010-10-15 16:31 ` Latchesar Ionkov
2010-10-15 16:40 ` cinap_lenrek
2010-10-15 16:43 ` Latchesar Ionkov
2010-10-15 17:11 ` cinap_lenrek
2010-10-15 17:15 ` Latchesar Ionkov
2010-10-15 19:10 ` erik quanstrom
2010-10-15 19:16 ` Latchesar Ionkov
2010-10-15 21:43 ` Julius Schmidt
2010-10-15 22:02 ` David Leimbach
2010-10-15 22:05 ` John Floren
2010-10-15 16:45 ` ron minnich
2010-10-15 17:26 ` Eric Van Hensbergen
2010-10-15 17:45 ` Charles Forsyth
2010-10-15 17:45 ` ron minnich
2010-10-15 18:03 ` Bakul Shah
2010-10-15 18:45 ` David Leimbach
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