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Wed, 01 Jun 2022 15:29:55 -0700 (PDT) MIME-Version: 1.0 Received: by 2002:a05:7300:64cc:b0:60:be3a:16c2 with HTTP; Wed, 1 Jun 2022 15:29:54 -0700 (PDT) In-Reply-To: <5F09745B-3A68-4E27-B5B5-644605A485ED@quintile.net> References: <83022bf9-96d9-d33c-d670-7b90961d61d6@posixcafe.org> <5F09745B-3A68-4E27-B5B5-644605A485ED@quintile.net> From: hiro <23hiro@gmail.com> Date: Thu, 2 Jun 2022 00:29:54 +0200 Message-ID: Subject: Re: [9fans] 9p server to multiply 9p messages? To: 9fans <9fans@9fans.net> Content-Type: text/plain; charset=UTF-8 Topicbox-Policy-Reasoning: allow: sender is a member Topicbox-Message-UUID: 60e8d778-e1fa-11ec-a59f-e556b946e7cb Archived-At: =?UTF-8?B?PGh0dHBzOi8vOWZhbnMudG9waWNib3guY29tL2dyb3Vwcy85?= =?UTF-8?B?ZmFucy9UNzY5ODU0ZmFmZDJiN2QzNS1NNGRlZDk2YmFhMTE3M2MyMzFiNjQ2?= =?UTF-8?B?ODVkPg==?= 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:M4ded96baa1173c231b64685d:1:FecckHGZM3tkcgpw220fYInB4rRPq67G-oxYFgp9Mrw On 6/1/22, Steve Simon wrote: > for performance testing why not copy from ramfs on one machine to ramfs on > another? ramfs is single-process and thus quite slow. > the suggestion from a 9con passim was to have fossil/cwfs/hjfs etc add a = Qid > type flag to files indicating they are from backing store (QTSTABLE ?)and > thus may be copied in parallel. devices and synthetic would not normally > have this flag forcing the read or write be sequential. yeah, that's what my comment about readahead is based on. this work has been already done at least for cwfs. ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/T769854fafd2b7d35-M4ded9= 6baa1173c231b64685d Delivery options: https://9fans.topicbox.com/groups/9fans/subscription