From: "Roman V. Shaposhnick" <vugluskr@unicorn.math.spbu.ru>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] sendfile interface
Date: Mon, 24 Feb 2003 06:50:45 +0300 [thread overview]
Message-ID: <20030224065045.A5493@unicorn.math.spbu.ru> (raw)
In-Reply-To: <20030220013204.A6122@unicorn.math.spbu.ru>
Wow! No reply whatsoever :-( Does it mean that it's completely impossible
to make sense out of scattered-read hardware (like some network cards
for example) under Plan9 ?
I understand that performance could be sacrificed for clarity, but was
it the case here ?
Thanks,
Roman.
On Thu, Feb 20, 2003 at 01:32:04AM +0300, Roman V. Shaposhnick wrote:
> While studying how Linux implements sendfile(2), I couldn't help
> but notice, that it is yet another hack a'la mmap. "There must
> be a better way to do that" I though at the moment.
>
> Now, I imagine, that for Plan9 there should be no problem telling
> kernel that one Chan should server as an "alias", or proxy if you
> will, for another one. By doing that, it should be possible to
> eliminate the whole "copy to userland buffer; copy back to kernel"
> routine and it could be even possible to utilize hardware
> scattered-write. How easy it will be for network connections ? Or may
> be I'm stretching my imagination too far, and there's no really
> a better way to do it. Please comment.
>
> Thanks,
> Roman.
next prev parent reply other threads:[~2003-02-24 3:50 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-02-19 22:32 Roman V. Shaposhnick
2003-02-24 3:50 ` Roman V. Shaposhnick [this message]
2003-02-24 3:56 ` rob pike, esq.
2003-02-24 4:03 ` Russ Cox
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