Add a stunningly useful utility.

if you ever nhave needed to do something like:
tar cf - <big_dir> | rsh cat > /dev/tape then you will appreciate this.

do something like

tar cf - <big_dir> | buffer | rsh othersys "cat  | buffer > /dev/tape"
to enjoy HUGE increases in speed while your tape drive does not
incessantly back/forth/stop/start.

5 files changed, 51 insertions, 0 deletions

diff --git a/misc/buffer/Makefile b/misc/buffer/Makefile
new file mode 100644
index 000000000000..5c9f9776864a
--- /dev/null
+++ b/misc/buffer/Makefile
@@ -0,0 +1,19 @@
+# New ports collection makefile for:	buffer
+# Version required:     1.17
+# Date created:         17 Nov 1995
+# Whom:                 markm
+#
+# $Id$
+#
+
+DISTNAME=       buffer-1.17
+CATEGORIES+=	utilities
+MASTER_SITES=   ftp://ftp.sun.ac.za/pub/unix/
+NO_WRKSUBDIR=	yes
+
+post-install:
+.if !defined(NOMANCOMPRESS)
+	gzip -9nf ${PREFIX}/man/manl/buffer.l
+.endif
+
+.include <bsd.port.mk>
diff --git a/misc/buffer/distinfo b/misc/buffer/distinfo
new file mode 100644
index 000000000000..7fc3aa45b303
--- /dev/null
+++ b/misc/buffer/distinfo
@@ -0,0 +1 @@
+MD5 (buffer-1.17.tar.gz) = 6c5236ed99f4df0832623f4c0498c681
diff --git a/misc/buffer/pkg-comment b/misc/buffer/pkg-comment
new file mode 100644
index 000000000000..dddb0d3bcf57
--- /dev/null
+++ b/misc/buffer/pkg-comment
@@ -0,0 +1 @@
+buffer sporadic binary I/O for faster tape use
diff --git a/misc/buffer/pkg-descr b/misc/buffer/pkg-descr
new file mode 100644
index 000000000000..c5c68ac64335
--- /dev/null
+++ b/misc/buffer/pkg-descr
@@ -0,0 +1,27 @@
+This is a program designed to speed up writing tapes on remote tape
+drives.  Requirements are shared memory and locks which normally
+means that these are supported in your kernel.
+
+[for FreeBSD, this means you MUST have a kernel with 
+ options SYSVSHM
+ compiled in - markm]
+
+Buffer has been tested under SunOS 4.0.*, SunOS 4.1.*, Solarix, HP-UX 7.0,
+and Gould UTX 2.1A (sv universe).
+
+The program splits itself into two processes.  The first process reads
+(and reblocks) from stdin into a shared memory buffer.  The second
+writes from the shared memory buffer to stdout.  Doing it this way
+means that the writing side effectly sits in a tight write loop and
+doesn't have to wait for input.  Similarly for the input side.  It is
+this waiting that slows down other reblocking processes, like dd.
+
+I run an archive and need to write large chunks out to tape regularly
+with an ethernet in the way.  Using 'buffer' in a command like:
+
+	tar cvf - stuff | rsh somebox "buffer > /dev/rst8"
+
+is a factor of 5 faster than the best alternative, gnu tar with its
+remote tape option:
+
+	tar cvf somebox:/dev/rst8 stuff
diff --git a/misc/buffer/pkg-plist b/misc/buffer/pkg-plist
new file mode 100644
index 000000000000..0851730727aa
--- /dev/null
+++ b/misc/buffer/pkg-plist
@@ -0,0 +1,3 @@
+@cwd /usr/local
+bin/buffer
+man/manl/buffer.l.gz