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From: Mike Silbersack <silby@FreeBSD.org>
Date: Sat, 31 Jan 2004 23:56:44 -0800 (PST)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org,
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X-FreeBSD-CVS-Branch: HEAD
Subject: cvs commit: src/sys/kern kern_subr.c uipc_mbuf.c uipc_syscalls.c
 src/sys/sys uio.h
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silby       2004/01/31 23:56:44 PST

  FreeBSD src repository

  Modified files:
    sys/kern             kern_subr.c uipc_mbuf.c uipc_syscalls.c 
    sys/sys              uio.h 
  Log:
  Rewrite sendfile's header support so that headers are now sent in the first
  packet along with data, instead of in their own packet.  When serving files
  of size (packetsize - headersize) or smaller, this will result in one less
  packet crossing the network.  Quick testing with thttpd and http_load has
  shown a noticeable performance improvement in this case (350 vs 330 fetches
  per second.)
  
  Included in this commit are two support routines, iov_to_uio, and m_uiotombuf;
  these routines are used by sendfile to construct the header mbuf chain that
  will be linked to the rest of the data in the socket buffer.
  
  Revision  Changes    Path
  1.80      +42 -0     src/sys/kern/kern_subr.c
  1.125     +56 -0     src/sys/kern/uipc_mbuf.c
  1.171     +43 -12    src/sys/kern/uipc_syscalls.c
  1.31      +3 -0      src/sys/sys/uio.h