From: Giacomo Tesio <giacomo@tesio.it>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] PDP11 (Was: Re: what heavy negativity!)
Date: Mon, 15 Oct 2018 11:29:07 +0200 [thread overview]
Message-ID: <CAHL7psERqRMg3vxch3=r9qk1EmdOPfrNbyV02Pav=w2V7ubTmg@mail.gmail.com> (raw)
In-Reply-To: <CAHqDL__cjaCwSm86XW5vcQvUWm6aYyogD6jrAAxoOM6oY04maw@mail.gmail.com>
Il giorno dom 14 ott 2018 alle ore 19:39 Ole-Hjalmar Kristensen
<ole.hjalmar.kristensen@gmail.com> ha scritto:
>
> OK, that makes sense. So it would not stop a client from for example first read an index block in a B-tree, wait for the result, and then issue read operations for all the data blocks in parallel.
If the client is the kernel that's true.
If the client is directly speaking 9P that's true again.
But if the client is a userspace program using pread/pwrite that
wouldn't work unless it fork a new process per each read as the
syscalls blocks.
Which is what fcp does, actually:
https://github.com/brho/plan9/blob/master/sys/src/cmd/fcp.c
Giacomo
next prev parent reply other threads:[~2018-10-15 9:29 UTC|newest]
Thread overview: 104+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-10 17:34 cinap_lenrek
2018-10-10 21:54 ` Steven Stallion
2018-10-10 22:26 ` [9fans] zero copy & 9p (was " Bakul Shah
2018-10-10 22:52 ` Steven Stallion
2018-10-11 20:43 ` Lyndon Nerenberg
2018-10-11 22:28 ` hiro
2018-10-12 6:04 ` Ori Bernstein
2018-10-13 18:01 ` Charles Forsyth
2018-10-13 21:11 ` hiro
2018-10-14 5:25 ` FJ Ballesteros
2018-10-14 7:34 ` hiro
2018-10-14 7:38 ` Francisco J Ballesteros
2018-10-14 8:00 ` hiro
2018-10-15 16:48 ` Charles Forsyth
2018-10-15 17:01 ` hiro
2018-10-15 17:29 ` hiro
2018-10-15 23:06 ` Charles Forsyth
2018-10-16 0:09 ` erik quanstrom
2018-10-17 18:14 ` Charles Forsyth
2018-10-10 22:29 ` [9fans] " Kurt H Maier
2018-10-10 22:55 ` Steven Stallion
2018-10-11 11:19 ` Aram Hăvărneanu
2018-10-11 0:26 ` Skip Tavakkolian
2018-10-11 1:03 ` Steven Stallion
2018-10-14 9:46 ` Ole-Hjalmar Kristensen
2018-10-14 10:37 ` hiro
2018-10-14 17:34 ` Ole-Hjalmar Kristensen
2018-10-14 19:17 ` hiro
2018-10-15 9:29 ` Giacomo Tesio [this message]
-- strict thread matches above, loose matches on Subject: below --
2018-10-10 22:19 cinap_lenrek
2018-10-10 16:14 cinap_lenrek
2018-10-10 0:15 cinap_lenrek
2018-10-10 0:22 ` Lyndon Nerenberg
2018-10-09 19:49 cinap_lenrek
2018-10-09 19:56 ` hiro
2018-10-09 19:47 cinap_lenrek
2018-10-09 22:01 ` erik quanstrom
2018-10-09 23:43 ` Lyndon Nerenberg
2018-10-10 5:52 ` hiro
2018-10-10 8:13 ` Digby R.S. Tarvin
2018-10-10 9:14 ` hiro
2018-10-10 13:59 ` Steve Simon
2018-10-10 21:32 ` Digby R.S. Tarvin
2018-10-11 17:43 ` Lyndon Nerenberg
2018-10-11 19:11 ` hiro
2018-10-11 19:27 ` Lyndon Nerenberg
2018-10-11 19:56 ` hiro
2018-10-10 5:57 ` hiro
2018-10-08 3:38 Lucio De Re
2018-10-08 4:29 ` Digby R.S. Tarvin
2018-10-08 7:20 ` hiro
2018-10-08 12:03 ` Charles Forsyth
2018-10-08 17:20 ` hiro
2018-10-08 21:55 ` Digby R.S. Tarvin
2018-10-08 23:03 ` Dan Cross
2018-10-09 0:14 ` Bakul Shah
2018-10-09 1:34 ` Christopher Nielsen
2018-10-09 3:28 ` Lucio De Re
2018-10-09 8:23 ` hiro
2018-10-09 9:45 ` Ethan Gardener
2018-10-09 17:50 ` Bakul Shah
2018-10-09 18:57 ` Ori Bernstein
2018-10-10 7:32 ` Giacomo Tesio
2018-10-09 17:45 ` Lyndon Nerenberg
2018-10-09 18:49 ` hiro
2018-10-09 19:14 ` Lyndon Nerenberg
2018-10-09 22:05 ` erik quanstrom
2018-10-11 17:54 ` Lyndon Nerenberg
2018-10-11 18:04 ` Kurt H Maier
2018-10-11 19:23 ` hiro
2018-10-11 19:24 ` hiro
2018-10-11 19:25 ` hiro
2018-10-11 19:26 ` Skip Tavakkolian
2018-10-11 19:39 ` Lyndon Nerenberg
2018-10-11 19:44 ` Skip Tavakkolian
2018-10-11 19:47 ` Lyndon Nerenberg
2018-10-11 19:57 ` hiro
2018-10-11 20:23 ` Lyndon Nerenberg
2018-10-10 10:42 ` Ethan Gardener
2018-10-09 19:23 ` Lyndon Nerenberg
2018-10-09 19:34 ` hiro
2018-10-09 19:36 ` hiro
2018-10-09 19:40 ` Lyndon Nerenberg
2018-10-10 0:18 ` Dan Cross
2018-10-10 5:45 ` hiro
2018-10-09 22:06 ` erik quanstrom
2018-10-10 6:24 ` Bakul Shah
2018-10-10 13:58 ` erik quanstrom
2018-10-09 22:42 ` Dan Cross
2018-10-09 19:09 ` Bakul Shah
2018-10-09 19:30 ` Lyndon Nerenberg
2018-10-09 3:08 ` Digby R.S. Tarvin
2018-10-09 11:58 ` Ethan Gardener
2018-10-09 13:59 ` erik quanstrom
2018-10-09 22:22 ` Digby R.S. Tarvin
2018-10-10 10:38 ` Ethan Gardener
2018-10-10 23:15 ` Digby R.S. Tarvin
2018-10-11 18:10 ` Lyndon Nerenberg
2018-10-11 20:55 ` Digby R.S. Tarvin
2018-10-11 21:03 ` Lyndon Nerenberg
2018-10-09 14:02 ` erik quanstrom
2018-10-08 8:12 ` Nils M Holm
2018-10-08 9:12 ` Digby R.S. Tarvin
2018-10-08 8:09 ` Nils M Holm
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