diff options
| author | konstantin@mysql.com <> | 2005-03-06 00:10:08 +0300 |
|---|---|---|
| committer | konstantin@mysql.com <> | 2005-03-06 00:10:08 +0300 |
| commit | 0f1d024461161f200800626f0020daf048c10cbf (patch) | |
| tree | 431745f4c1466da5a5fa719302ab3a443eb8f819 /config/ac-macros/misc.m4 | |
| parent | e25a5877e02f5140a7a23a88493e484003bdbbad (diff) | |
| download | mariadb-git-0f1d024461161f200800626f0020daf048c10cbf.tar.gz | |
Porting of "buffered read" patch to 5.0 and post-review fixes.
The patch implements the idea suggested by Olaf van der Spek in
thread "Client: many small reads?" (internals@lists.mysql.com).
Now small reads performed by the client library are buffered.
The buffering gives up to 2 times speedup when retrieving
one-column tables.
Diffstat (limited to 'config/ac-macros/misc.m4')
| -rw-r--r-- | config/ac-macros/misc.m4 | 23 |
1 files changed, 7 insertions, 16 deletions
diff --git a/config/ac-macros/misc.m4 b/config/ac-macros/misc.m4 index ec0c296a8b2..556cc7625cc 100644 --- a/config/ac-macros/misc.m4 +++ b/config/ac-macros/misc.m4 @@ -594,22 +594,13 @@ AC_MSG_RESULT($ac_cv_conv_longlong_to_float) ]) AC_DEFUN([MYSQL_CHECK_VIO], [ - AC_ARG_WITH([vio], - [ --with-vio Include the Virtual IO support], - [vio="$withval"], - [vio=no]) - - if test "$vio" = "yes" - then - vio_dir="vio" - vio_libs="../vio/libvio.la" - AC_DEFINE(HAVE_VIO, 1) - else - vio_dir="" - vio_libs="" - fi - AC_SUBST([vio_dir]) - AC_SUBST([vio_libs]) +dnl +dnl we always use vio: no need for special defines +dnl + AC_DEFINE([HAVE_VIO_READ_BUFF], [1], + [Define to enable buffered read. This works only if syscalls + read/recv return as soon as there is some data in the kernel + buffer, no matter how big the given buffer is.]) ]) # Local version of _AC_PROG_CXX_EXIT_DECLARATION that does not |