public inbox for linux-kernel@vger.kernel.org
 help / color / mirror / Atom feed
From: Yaar Schnitman <yaar@pando.com>
To: linux-kernel@vger.kernel.org
Cc: Yaar Schnitman <yaar@pando.com>
Subject: optimizing sendfile
Date: Thu, 05 Apr 2007 18:04:27 -0400	[thread overview]
Message-ID: <4615726B.4080800@pando.com> (raw)

Hi,

How can I control the size of the block requests the sendfile() syscall 
performs
against the disk?

I'm using sendfile (on a 2.6.18 kernel) to copy 1M file chunks into a 
socket. The
socket send buffer size is 2MB, and I verify that its empty before 
making the call.
Indeed, 1M chunk is being sent, but from iostat, I can tell that the 
average request
size is around 128KB. Are there any kernel configuration variables that 
could change that?

Help will be appreciated.


                 reply	other threads:[~2007-04-05 22:38 UTC|newest]

Thread overview: [no followups] expand[flat|nested]  mbox.gz  Atom feed

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=4615726B.4080800@pando.com \
    --to=yaar@pando.com \
    --cc=linux-kernel@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox