diff options
| author | Prashanth Pai <ppai@redhat.com> | 2012-03-26 14:33:41 +0530 |
|---|---|---|
| committer | Vijay Bellur <vbellur@redhat.com> | 2013-11-11 19:35:01 -0800 |
| commit | b18257183d137c7ea8a76b4d57812fe26d9ea850 (patch) | |
| tree | 2f50aa44455255afb3f43b18b9a0066331e25cc1 /configure.ac | |
| parent | 27935ee84c484fff3d8d29218c197812701957ed (diff) | |
features/compress: Compression/DeCompression translator
* When a writev call occurs, the client compresses the data before
sending it to server. On the server, compressed data is decompressed.
Similarly, when a readv call occurs, the server compresses the data
before sending it to client. On the client, the compressed data is
decompressed. Thus the amount of data sent over the wire is minimized.
* Compression/Decompression is done using Zlib library.
* During normal operation, this is the format of data sent over wire :
<compressed-data> + trailer(8)
The trailer contains the CRC32 checksum and length of original
uncompressed data. This is used for validation.
HOW TO USE
----------
Turning on compression xlator:
gluster volume set <vol_name> compress on
Configurable options:
gluster volume set <vol_name> compress.compression-level 8
gluster volume set <vol_name> compress.min-size 50
Change-Id: Ib7a66b6f1f70fe002b7c513588cdf75c69370805
BUG: 923540
Original-author : Venky Shankar <vshankar@redhat.com>
Signed-off-by: Venky Shankar <vshankar@redhat.com>
Signed-off-by: Prashanth Pai <nullpai@gmail.com>
Signed-off-by: Prashanth Pai <ppai@redhat.com>
Reviewed-on: http://review.gluster.org/3251
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index b8cb855a01c..cf301b2901a 100644 --- a/configure.ac +++ b/configure.ac @@ -113,6 +113,8 @@ AC_CONFIG_FILES([Makefile xlators/features/marker/src/Makefile xlators/features/read-only/Makefile xlators/features/read-only/src/Makefile + xlators/features/compress/Makefile + xlators/features/compress/src/Makefile xlators/features/mac-compat/Makefile xlators/features/mac-compat/src/Makefile xlators/features/quiesce/Makefile @@ -484,6 +486,17 @@ AC_SUBST(SYNCDAEMON_COMPILE) AC_SUBST(SYNCDAEMON_SUBDIR) # end SYNCDAEMON section +# CDC xlator - check if libz is present if so enable HAVE_LIB_Z +echo -n "checking if libz is present... " + +PKG_CHECK_MODULES([ZLIB], [zlib >= 1.2.0], + [echo "yes (features requiring zlib enabled)" AC_DEFINE(HAVE_LIB_Z, 1, [define if zlib is present])], + [echo "no"] ) + +AC_SUBST(LIBZ_CFLAGS) +AC_SUBST(LIBZ_LIBS) +# end CDC xlator secion + # check for systemtap/dtrace BUILD_SYSTEMTAP=no AC_MSG_CHECKING([whether to include systemtap tracing support]) |