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Mon, 04 Jan 2021 03:03:07 -0800 (PST) MIME-Version: 1.0 Received: by 2002:a17:906:6848:0:0:0:0 with HTTP; Mon, 4 Jan 2021 03:03:06 -0800 (PST) In-Reply-To: References: <86tus46ujm.fsf@cmarib.ramside> <3e07aed0-6865-460a-9433-826cf173bb85@www.fastmail.com> From: hiro <23hiro@gmail.com> Date: Mon, 4 Jan 2021 12:03:06 +0100 Message-ID: Subject: Re: [9fans] Dual dialing/forking sessions to increase 9P throughput To: 9fans <9fans@9fans.net> Content-Type: text/plain; charset="UTF-8" Topicbox-Policy-Reasoning: allow: sender is a member Topicbox-Message-UUID: 70abe906-4e7c-11eb-8183-c632a55593f3 Archived-At: =?UTF-8?B?PGh0dHBzOi8vOWZhbnMudG9waWNib3guY29tL2dyb3Vwcy85?= =?UTF-8?B?ZmFucy9UZTY5YmIwZmNlMGYwZmZhZi1NNmY2MTAyMjJiM2Q3ZmMxODAwZTgy?= =?UTF-8?B?MTc0Pg==?= List-Help: List-Id: "9fans" <9fans.9fans.net> List-Post: List-Software: Topicbox v0 List-Subscribe: Precedence: list Reply-To: 9fans <9fans@9fans.net> Content-Transfer-Encoding: quoted-printable List-Unsubscribe: , Topicbox-Delivery-ID: 2:9fans:437d30aa-c441-11e9-8a57-d036212d11b0:522be890-2105-11eb-b15e-8d699134e1fa:M6f610222b3d7fc1800e82174:1:evo_Qx2QLS6_1TQoaBgDFDCPBx5szkPslIvFWC_KOUY reliability can be provided by AAN, already. You can try out the Op protocol for inferno though, if you want to see a working implementation of streaming 9p. I've been running it for a long time and it worked perfectly for my use cas= e. On 1/4/21, Ole-Hjalmar Kristensen wrote: > I agree with you that using the existing tag mechanism to keep multiple > requests in flight should be sufficient. I get the impression that this is > not readily supported by the higher level libraries, though. > > As an aside, I seem to remember that John Floren sugegsed (and implemente= d) > changes to the 9P protocol making it more suitable for streaming media by > creating another TCP connection on the side. > > On Mon, Jan 4, 2021 at 12:52 AM Ethan Gardener wrot= e: > >> > The idea, basically, is to use an open flag (OJUMBO) to signal that two >> > connections to the same server should be attempted. >> >> What's the advantage over fcp(1)? 9p can have numerous requests "in >> flight" at once to work around latency issues, but of all the user >> programs, fcp is probably the only one which takes advantage of this. >> >> > If a second >> > connection can be established, it is used for normal 9P transactions, >> > while the first connection is used for large ("jumbo") writes. >> >> How large is "jumbo"? I believe all the user programs have 8KB buffers at >> present; are you going to change them all? >> >> I'm not negative about this; just raising the points. ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/Te69bb0fce0f0ffaf-M6f610= 222b3d7fc1800e82174 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription