From: Francisco J Ballesteros <nemo@lsub.org>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] zero copy & 9p (was Re: PDP11 (Was: Re: what heavy negativity!)
Date: Sun, 14 Oct 2018 09:38:26 +0200 [thread overview]
Message-ID: <FA46EAF2-2344-4DA0-8A56-7B85CD4C4826@lsub.org> (raw)
In-Reply-To: <CAFSF3XMgB=QLrtqKpxq7MBVAm2ZOKTK7JxrMWWk24HcYZKmeXg@mail.gmail.com>
Pure "producer/cosumer" stuff, like sending things through a pipe as long as the source didn't need to touch the data ever more.
Regarding bugs, I meant "producing bugs" not "fixing bugs", btw.
> On 14 Oct 2018, at 09:34, hiro <23hiro@gmail.com> wrote:
>
> well, finding bugs is always good :)
> but since i got curious could you also tell which things exactly got
> much faster, so that we know what might be possible?
>
> On 10/14/18, FJ Ballesteros <nemo@lsub.org> wrote:
>> yes. bugs, on my side at least.
>> The copy isolates from others.
>> But some experiments in nix and in a thing I wrote for leanxcale show that
>> some things can be much faster.
>> It’s fun either way.
>>
>>> El 13 oct 2018, a las 23:11, hiro <23hiro@gmail.com> escribió:
>>>
>>> and, did it improve anything noticeably?
>>>
>>>> On 10/13/18, Charles Forsyth <charles.forsyth@gmail.com> wrote:
>>>> I did several versions of one part of zero copy, inspired by several
>>>> things
>>>> in x-kernel, replacing Blocks by another structure throughout the
>>>> network
>>>> stacks and kernel, then made messages visible to user level. Nemo did
>>>> another part, on his way to Clive
>>>>
>>>>> On Fri, 12 Oct 2018, 07:05 Ori Bernstein, <ori@eigenstate.org> wrote:
>>>>>
>>>>> On Thu, 11 Oct 2018 13:43:00 -0700, Lyndon Nerenberg
>>>>> <lyndon@orthanc.ca>
>>>>> wrote:
>>>>>
>>>>>> Another case to ponder ... We're handling the incoming I/Q data
>>>>>> stream, but need to fan that out to many downstream consumers. If
>>>>>> we already read the data into a page, then flip it to the first
>>>>>> consumer, is there a benefit to adding a reference counter to that
>>>>>> read-only page and leaving the page live until the counter expires?
>>>>>>
>>>>>> Hiro clamours for benchmarks. I agree. Some basic searches I've
>>>>>> done don't show anyone trying this out with P9 (and publishing
>>>>>> their results). Anybody have hints/references to prior work?
>>>>>>
>>>>>> --lyndon
>>>>>>
>>>>>
>>>>> I don't believe anyone has done the work yet. I'd be interested
>>>>> to see what you come up with.
>>>>>
>>>>>
>>>>> --
>>>>> Ori Bernstein
>>>>>
>>>>>
>>>>
>>>
>>
>>
>>
>
next prev parent reply other threads:[~2018-10-14 7:38 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-10 17:34 [9fans] " 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 [this message]
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
2018-10-10 23:58 [9fans] zero copy & 9p (was " cinap_lenrek
2018-10-11 0:56 ` Dan Cross
2018-10-11 2:26 ` Steven Stallion
2018-10-11 2:30 ` Bakul Shah
2018-10-11 3:20 ` Steven Stallion
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