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- Path: sparky!uunet!dtix!darwin.sura.net!wupost!gumby!yale!mintaka.lcs.mit.edu!eswu
- From: eswu@expo.lcs.mit.edu (Eng-Shien Wu)
- Newsgroups: comp.unix.aix
- Subject: MIT X11R5 Performance Patches
- Summary: Additional patches to improve skyway Xserver performance
- Keywords: X11R5 Skyway Xserver
- Message-ID: <eswu.714103518@rsx.lcs.mit.edu>
- Date: 18 Aug 92 02:05:18 GMT
- Sender: news@mintaka.lcs.mit.edu
- Organization: X Consortium, MIT Laboratory for Computer Science
- Lines: 125
-
- -------------------------------------------------------------------------
- Updated to include info on patching UNIX domain sockets for AIX 3.2.
- If you grabbed these files before, they are still the same... no
- further enhancements have been made since January 24, 1992.
- -------------------------------------------------------------------------
-
- X11R5 Skyway Performance Patch 1
- January 24, 1992
- README updated August 17, 1992
-
-
- This distribution contains new files and patches to the MIT X11R5
- sample Xserver for the RISC System/6000 colorgda adapter (also
- known as "skyway"). There are three parts to the distribution:
-
- sky.README - Instructions you are reading
- sky-perf-1.tar.Z - Tar of entire skyway directory
- sky-cfb.patch - Patches to servermd.h, cfbblt.c,
- ibmInit.c, and ibmUtils.c
-
- sky-aix32.patch - Patch to XConnDis.c to make UNIX
- domain sockets work on AIX3.2
- (BSD4.3 -> BSD4.4 networking)
-
- These files are available for anonymous ftp in the contrib
- directory of export.lcs.mit.edu.
-
-
- #include <std/disclaimer.h>
-
- IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS, AND
- NONINFRINGEMENT OF THIRD PARTY RIGHTS, IN NO EVENT SHALL IBM BE
- LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
- DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
- WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
- ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- PERFORMANCE OF THIS SOFTWARE.
-
-
- Prerequisites: MIT public fixes 0 thru 16
-
- It is recommended that you apply this performance patch after
- applying MIT public fixes 0 thru 16 to the original MIT X11R5
- release. Specifically, public fixes 1 and 7 must not be applied
- after applying this performance enhancement. These fixes can be
- obtained via anonomous ftp from export.lcs.mit.edu in the
- directory /pub/R5/fixes.
-
-
- Instructions to apply performance patch:
-
- In the instructions, replace MITSRC with the top of your source tree
- (the directory containing the "mit" and "contrib" subdirectories).
-
- 1. Uncompress tar file, and move tar and patch file
-
- uncompress sky-perf-1.tar.Z
-
- mv sky-perf-1.tar MITSRC/mit/server/ddx/ibm
- mv sky-cfb.patch MITSRC
-
- 2. Apply patches to servermd.h, cfbblt.c, ibmInit.c, and ibmUtils.c
-
- cd MITSRC
- patch -p -s < sky-cfb.patch
-
- 3. Untar skyway directory
-
- cd MITSRC/mit/server/ddx/ibm
- mv skyway skyway.old
- tar xvf sky-perf-1.tar
-
- 4. Rebuild Xibm
-
- cd MITSRC/mit/server
- make Xibm
-
-
- What should be faster:
-
- GetImage, PutImage, CopyArea (window to/from pixmap, pixmap to
- pixmap), FillRectangles, and redrawing tiled window backgrounds
- should be much faster. BackingStore save and restoring should
- be much faster. Text should be a little bit faster. The IBM
- X11R4 Xserver will still be faster on average.
-
-
- Note for AIX V3.2:
-
- Because AIX3.2 switched to BSD4.4 socket address structures,
- a patch to lib/X/XConnDis.c is neccessary for the UNIX domain
- sockets to work.
-
- To patch XConnDis.c:
-
- mv sky-aix32.patch MITSRC/mit/lib/X
- cd MITSRC/mit/lib/X
- cp XConnDis.c XConnDis.c.save
- patch -p -s < sky-aix32.patch
- make libX11.a
-
-
- Note:
-
- 1. This does not fix all the places where socket addresses
- are used, so do *not* turn off the network option "compat_43"
- (by the "no" command).
-
- 2. A full fix will be released someday, but do not hold your
- breath because it affects a lot of files in the MIT tree,
- which have previous changes that also affects more files.
- When a full fix comes, you will have to back out the
- changes to XConnDis.c then.
-
-
- Where do I send bug reports?
-
- Bug reports should be sent to xbugs@expo.lcs.mit.edu using the
- form provided in MITSRC/bug-report. Specify area as ibmddx.
- Specify version as "R5, public-patch-?? + sky-perf-1".
-
- --
- Eng-Shien Wu (eswu@expo.lcs.mit.edu)
- IBM Graphic Systems/MIT X Consortium
-