From: Trond Myklebust <trond.myklebust@fys.uio.no>
To: Hirokazu Takahashi <taka@valinux.co.jp>
Cc: jakob@unthought.net, davem@redhat.com, ak@suse.de,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] zerocopy NFS updated
Date: 18 Apr 2002 10:53:31 +0200 [thread overview]
Message-ID: <shspu0x2xro.fsf@charged.uio.no> (raw)
In-Reply-To: <20020414.212308.33849971.davem@redhat.com> <20020416.100302.129343787.taka@valinux.co.jp> <20020416034120.R18116@unthought.net> <20020418.140155.85418444.taka@valinux.co.jp>
>>>>> " " == Hirokazu Takahashi <taka@valinux.co.jp> writes:
> Hi, I've been thinking about your comment, and I realized it
> was a good suggestion. There are no problem with the zerocopy
> NFS, but If you want to use UDP sendfile for streaming or
> something like that, you wouldn't get good performance.
Surely one can work around this in userland without inventing a load
of ad-hoc schemes in the kernel socket layer?
If one doesn't want to create a pool of sockets in order to service
the different threads, one can use generic methods such as
sys_readahead() in order to ensure that the relevant data gets paged
in prior to hogging the socket.
There is no difference between UDP and TCP sendfile() in this respect.
Cheers,
Trond
next prev parent reply other threads:[~2002-04-18 8:53 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20020410.190550.83626375.taka@valinux.co.jp.suse.lists.linux.kernel>
2002-04-10 19:32 ` [PATCH] zerocopy NFS updated Andi Kleen
2002-04-11 2:30 ` David S. Miller
2002-04-11 6:46 ` Hirokazu Takahashi
2002-04-11 6:48 ` David S. Miller
2002-04-11 7:41 ` Hirokazu Takahashi
2002-04-11 7:52 ` David S. Miller
2002-04-11 11:38 ` Hirokazu Takahashi
2002-04-11 11:36 ` David S. Miller
2002-04-11 18:00 ` Denis Vlasenko
2002-04-11 13:16 ` Andi Kleen
2002-04-11 17:36 ` Benjamin LaHaise
2002-04-16 0:17 ` Mike Fedyk
2002-04-16 15:37 ` Oliver Xymoron
2002-04-11 17:33 ` Benjamin LaHaise
2002-04-12 8:10 ` Hirokazu Takahashi
2002-04-12 12:30 ` Hirokazu Takahashi
2002-04-12 12:35 ` Andi Kleen
2002-04-12 21:22 ` Jamie Lokier
2002-04-12 21:31 ` David S. Miller
2002-04-13 0:21 ` Jamie Lokier
2002-04-13 6:39 ` Andi Kleen
2002-04-13 8:01 ` Hirokazu Takahashi
2002-04-13 19:19 ` Eric W. Biederman
2002-04-13 19:37 ` Andi Kleen
2002-04-13 20:34 ` Eric W. Biederman
2002-04-24 23:11 ` Mike Fedyk
2002-04-25 17:11 ` Andreas Dilger
2002-04-13 18:52 ` Chris Wedgwood
2002-04-14 0:07 ` Keith Owens
2002-04-14 8:19 ` Chris Wedgwood
2002-04-14 8:40 ` Keith Owens
2002-04-12 21:39 ` David S. Miller
2002-04-15 1:30 ` Hirokazu Takahashi
2002-04-15 4:23 ` David S. Miller
2002-04-16 1:03 ` Hirokazu Takahashi
2002-04-16 1:41 ` Jakob Østergaard
2002-04-16 2:20 ` Hirokazu Takahashi
2002-04-18 5:01 ` Hirokazu Takahashi
2002-04-18 7:58 ` Jakob Østergaard
2002-04-18 8:53 ` Trond Myklebust [this message]
2002-04-19 3:21 ` Hirokazu Takahashi
2002-04-19 9:18 ` Trond Myklebust
2002-04-20 7:47 ` Hirokazu Takahashi
2002-04-25 12:37 ` Possible bug with UDP and SO_REUSEADDR. Was " Terje Eggestad
2002-04-26 2:43 ` David S. Miller
2002-04-26 7:38 ` Terje Eggestad
2002-04-29 0:41 ` Possible bug with UDP and SO_REUSEADDR David Schwartz
2002-04-29 8:06 ` Terje Eggestad
2002-04-29 8:44 ` David Schwartz
2002-04-29 10:03 ` Terje Eggestad
2002-04-29 10:38 ` David Schwartz
2002-04-29 14:20 ` Terje Eggestad
[not found] ` <200204192128.QAA24592@popmail.austin.ibm.com>
2002-04-20 10:14 ` [PATCH] zerocopy NFS updated Hirokazu Takahashi
2002-04-20 15:49 ` Andrew Theurer
2002-04-10 10:05 Hirokazu Takahashi
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