From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <140e7ec30809180257y34722805y287fd9838bd76f35@mail.gmail.com> Date: Thu, 18 Sep 2008 17:57:21 +0800 From: sqweek To: "Fans of the OS Plan 9 from Bell Labs" <9fans@9fans.net> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Disposition: inline Subject: Re: [9fans] 9p over high-latency Topicbox-Message-UUID: 11bb6cee-ead4-11e9-9d60-3106f5b1d025 On Fri, Sep 12, 2008 at 7:47 PM, erik quanstrom 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