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From: sqweek <sqweek@gmail.com>
To: "Fans of the OS Plan 9 from Bell Labs" <9fans@9fans.net>
Subject: Re: [9fans] 9p over high-latency
Date: Thu, 18 Sep 2008 17:57:21 +0800	[thread overview]
Message-ID: <140e7ec30809180257y34722805y287fd9838bd76f35@mail.gmail.com> (raw)

On Fri, Sep 12, 2008 at 7:47 PM, erik quanstrom <quanstro@quanstro.net> wrote:
> as an aside: i don't think 9p itself limits plan 9 performance
> over high-latency links.  the limitations have more to do with
> the number of outstanding messages, which is 1 in the mnt
> driver.

 Hm, but what's the alternative here? Readahead seems somewhat
attractive, if difficult (I worry about blocking reads and timing
sensitive file systems). But there's one problem I can't resolve - how
do you know what offset to Tread without consulting the previous
Rread's count?
 Actually, I understand there has been discussion about grouping tags
to allow for things like Twalk/Topen batching without waiting for
Rwalk (which sounds like a great idea), maybe that would work here
also...
-sqweek



             reply	other threads:[~2008-09-18  9:57 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-09-18  9:57 sqweek [this message]
2008-09-18 10:36 ` Christian Kellermann
2008-09-18 10:48   ` Uriel
2008-09-27  1:17 ` Nathaniel W Filardo
2008-09-18 11:51 erik quanstrom
2008-09-18 13:34 ` Eric Van Hensbergen
     [not found] <0a44b94d5b9fa0b13dc1d9ae11472e5e@quanstro.net>
2008-09-18 13:34 ` sqweek
2008-09-18 13:49   ` Eric Van Hensbergen
2008-09-18 17:26     ` Francisco J Ballesteros
2008-09-18 20:05       ` Steve Simon
2008-09-18 20:38         ` Francisco J Ballesteros

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