On 15 Aug 2008, at 12:17 pm, Brandon S. Allbery KF8NH wrote:
Actually, while I'm not sure how Linux does it, on the *BSDs pipes
are actually socketpairs.
This raises the question, which the documentation did not make clear
to me,
whether a named pipe is a pipe. One would hope it was, but
On 2008 Aug 15, at 2:23, Richard A. O'Keefe wrote:
On 15 Aug 2008, at 12:17 pm, Brandon S. Allbery KF8NH wrote:
Actually, while I'm not sure how Linux does it, on the *BSDs pipes
are actually socketpairs.
This raises the question, which the documentation did not make clear
to me,
whether
On Thu, 14 Aug 2008, Brandon S. Allbery KF8NH wrote:
Actually, while I'm not sure how Linux does it, on the *BSDs pipes are
actually socketpairs.
Not any more. FreeBSD replaced the socketpair implementation with a faster
one in 1996 and OpenBSD imported it soon after. NetBSD imported it in
On 2008 Aug 15, at 9:34, Tony Finch wrote:
On Thu, 14 Aug 2008, Brandon S. Allbery KF8NH wrote:
Actually, while I'm not sure how Linux does it, on the *BSDs pipes
are
actually socketpairs.
Not any more. FreeBSD replaced the socketpair implementation with a
faster
one in 1996 and
On 2008 Aug 14, at 2:28, Ketil Malde wrote:
Brandon S. Allbery KF8NH [EMAIL PROTECTED] writes:
Your previously stated use case sounds like a good fit. I can easily
imagine sendfile() implementations starving other network operations,
though (and IIRC linux's early sendfile() implementation
Brandon S. Allbery KF8NH [EMAIL PROTECTED] writes:
On 2008 Aug 13, at 18:25, Jason Dusek wrote:
Can you say more about this? I assume that sending static
images back and forth is a good fit for sendfile().
Your previously stated use case sounds like a good fit. I can easily
imagine
On 14 Aug 2008, at 6:28 pm, Ketil Malde wrote:
Isn't [sendfile()] superseeded by splice(2) nowadays?
Solaris 10:
f% man splice
No manual entry for splice
Mac OS X 10.5.4
m% man splice
No manual entry for splice
Linux 2.6.23...
o% man splice
..
one of the descriptors MUST refer
On 2008 Aug 14, at 19:07, Richard A. O'Keefe wrote:
to me, two of them don't have it, and the third seems to be
saying you cannot use it to move data from a file (which is
not a pipe) to a socket (which is not a pipe), which is the
use-case for sendfile().
Actually, while I'm not sure how
I found an old lib for it:
http://www.haskell.org/ghc/docs/6.0/html/unix/System.Sendfile.html
Hoogle turns up nothing, though.
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2008/8/13 Jason Dusek [EMAIL PROTECTED]:
I found an old lib for it:
http://www.haskell.org/ghc/docs/6.0/html/unix/System.Sendfile.html
Hoogle turns up nothing, though.
That don't sound very useful... Maybe when we only had String it was
much more performant for big transfert, but now
On 2008 Aug 13, at 15:01, Chaddaï Fouché wrote:
2008/8/13 Jason Dusek [EMAIL PROTECTED]:
I found an old lib for it:
http://www.haskell.org/ghc/docs/6.0/html/unix/System.Sendfile.html
Hoogle turns up nothing, though.
That don't sound very useful... Maybe when we only had String it was
Chaddaï Fouché [EMAIL PROTECTED] wrote:
Maybe when we only had String it was much more performant for
big transfert, but now we can recode this in one short line of
ByteString code and get the same performance as C.
Oh? Using lazy ByteString?
--
_jsn
On 2008 Aug 13, at 15:04, Brandon S. Allbery KF8NH wrote:
On 2008 Aug 13, at 15:01, Chaddaï Fouché wrote:
2008/8/13 Jason Dusek [EMAIL PROTECTED]:
I found an old lib for it:
http://www.haskell.org/ghc/docs/6.0/html/unix/System.Sendfile.html
Hoogle turns up nothing, though.
That don't
2008/8/13 Brandon S. Allbery KF8NH [EMAIL PROTECTED]:
I should clarify: what sendfile() is supposed to optimize isn't writing
large strings, or even the user-kernel roundtrips; it's an optimization to
the kernel network stack (network buffer management, to be specific). Web
servers use it
Brandon S. Allbery KF8NH [EMAIL PROTECTED] wrote:
I should clarify: what sendfile() is supposed to optimize
isn't writing large strings, or even the user-kernel
roundtrips; it's an optimization to the kernel network stack
(network buffer management, to be specific). Web servers use
it to
Brandon S. Allbery KF8NH [EMAIL PROTECTED] wrote:
Right. I intended that to be a heads-up in both directions:
it is not simply a library convenience function, so one needs
to think about when to use it. In particular, it's possible
that overuse of sendfile() in the wrong circumstances will
On 2008 Aug 13, at 18:25, Jason Dusek wrote:
Brandon S. Allbery KF8NH [EMAIL PROTECTED] wrote:
Right. I intended that to be a heads-up in both directions:
it is not simply a library convenience function, so one needs
to think about when to use it. In particular, it's possible
that overuse of
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