The current port is tested only on
sco3.2v5.0.7 systems. There has also been
progress on a port to
Server 5.0.8 (Legend) has native threads and permits files
greater than 2GB. The current maximum file size is 2GB.
We have been able to compile MySQL with the following configure command on OpenServer with gcc 2.95.3.
CC=gcc CFLAGS="-D_FILE_OFFSET_BITS=64 -O3" \ CXX=gcc CXXFLAGS="-D_FILE_OFFSET_BITS=64 -O3" \ ./configure --prefix=/usr/local/mysql \ --enable-thread-safe-client --with-innodb \ --with-openssl --with-vio --with-extra-charsets=complex
gcc is available at ftp://ftp.sco.com/pub/openserver5/opensrc/gnutools-5.0.7Kj.
This development system requires the OpenServer Execution
Environment Supplement oss646B on OpenServer 5.0.6 and oss656B
and the OpenSource libraries found in gwxlibs. All OpenSource
tools are in the
opensrc directory. They
are available at
Use the latest production release of MySQL.
SCO provides information about security fixes at ftp://ftp.sco.com/pub/security/OpenServer for OpenServer 5.0.x.
The maximum file size on an OpenServer 5.0.x system is 2GB.
The total memory which can be allocated for streams buffers, clists, and lock records cannot exceed 60MB on OpenServer 5.0.x.
Streams buffers are allocated in units of 4096 byte pages, clists are 70 bytes each, and lock records are 64 bytes each, so:
(NSTRPAGES * 4096) + (NCLIST * 70) + (MAX_FLCKREC * 64) <= 62914560
Follow this procedure to configure the Database Services option. If you are unsure whether an application requires this, see the documentation provided with the application.
Log in as
Enable the SUDS driver by editing the
/etc/conf/sdevice.d/suds file. Change
N in the second field to a
Use mkdev aio or the Hardware/Kernel Manager to enable support for asynchronous I/O and relink the kernel. To enable users to lock down memory for use with this type of I/O, update the aiomemlock(F) file. This file should be updated to include the names of users that can use AIO and the maximum amounts of memory they can lock down.
Many applications use setuid binaries so that you need to specify only a single user. See the documentation provided with the application to determine whether this is the case for your application.
After you complete this process, reboot the system to create a new kernel incorporating these changes.
By default, the entries in
/etc/conf/cf.d/mtune are set as follows:
Value Default Min Max ----- ------- --- --- NBUF 0 24 450000 NHBUF 0 32 524288 NMPBUF 0 12 512 MAX_INODE 0 100 64000 MAX_FILE 0 100 64000 CTBUFSIZE 128 0 256 MAX_PROC 0 50 16000 MAX_REGION 0 500 160000 NCLIST 170 120 16640 MAXUP 100 15 16000 NOFILES 110 60 11000 NHINODE 128 64 8192 NAUTOUP 10 0 60 NGROUPS 8 0 128 BDFLUSHR 30 1 300 MAX_FLCKREC 0 50 16000 PUTBUFSZ 8000 2000 20000 MAXSLICE 100 25 100 ULIMIT 4194303 2048 4194303 * Streams Parameters NSTREAM 64 1 32768 NSTRPUSH 9 9 9 NMUXLINK 192 1 4096 STRMSGSZ 16384 4096 524288 STRCTLSZ 1024 1024 1024 STRMAXBLK 524288 4096 524288 NSTRPAGES 500 0 8000 STRSPLITFRAC 80 50 100 NLOG 3 3 3 NUMSP 64 1 256 NUMTIM 16 1 8192 NUMTRW 16 1 8192 * Semaphore Parameters SEMMAP 10 10 8192 SEMMNI 10 10 8192 SEMMNS 60 60 8192 SEMMNU 30 10 8192 SEMMSL 25 25 150 SEMOPM 10 10 1024 SEMUME 10 10 25 SEMVMX 32767 32767 32767 SEMAEM 16384 16384 16384 * Shared Memory Parameters SHMMAX 524288 131072 2147483647 SHMMIN 1 1 1 SHMMNI 100 100 2000 FILE 0 100 64000 NMOUNT 0 4 256 NPROC 0 50 16000 NREGION 0 500 160000
Set these values as follows:
NOFILES should be 4096 or 2048.
MAXUP should be 2048.
To make changes to the kernel, use the idtune
name parameter command.
idtune modifies the
/etc/conf/cf.d/stune file for you. For
example, to change
200, execute this command as
/etc/conf/bin/idtune SEMMNS 200
Then rebuild and reboot the kernel by issuing this command:
/etc/conf/bin/idbuild -B && init 6
To tune the system, the proper parameter values to use depend on the number of users accessing the application or database and size the of the database (that is, the used buffer pool). The following kernel parameters can be set with idtune:
SHMMAX (recommended setting: 128MB) and
SHMSEG (recommended setting: 15). These
parameters have an influence on the MySQL database engine
to create user buffer pools.
should be set to at least 2048.
MAXPROC should be set to at least
3000/4000 (depends on number of users) or more.
The following formulas are recommended to calculate values
SEMMSL = 13
13 is what has been found to be the best for both Progress and MySQL.
SEMMNS = SEMMSL *
number of db servers to be run on the system
SEMMNS to the value of
SEMMSL multiplied by the number of
database servers (maximum) that you are running on the
system at one time.
SEMMNU = SEMMNS
Set the value of
SEMMNU to equal the
SEMMNS. You could probably set
this to 75% of
SEMMNS, but this is a
You need to at least install the SCO OpenServer Linker and Application Development Libraries or the OpenServer Development System to use gcc. You cannot use the GCC Dev system without installing one of these.
You should get the FSU Pthreads package and install it first. This can be found at http://moss.csc.ncsu.edu/~mueller/ftp/pub/PART/pthreads.tar.gz. You can also get a precompiled package from ftp://ftp.zenez.com/pub/zenez/prgms/FSU-threads-3.14.tar.gz.
FSU Pthreads can be compiled with SCO Unix 4.2 with tcpip, or
using OpenServer 3.0 or Open Desktop 3.0 (OS 3.0 ODT 3.0) with
the SCO Development System installed using a good port of GCC
2.5.x. For ODT or OS 3.0, you need a good port of GCC 2.5.x.
There are a lot of problems without a good port. The port for
this product requires the SCO Unix Development system. Without
it, you are missing the libraries and the linker that is
needed. You also need
SCO-3.2v4.2-includes.tar.gz. This file
contains the changes to the SCO Development include files that
are needed to get MySQL to build. You need to replace the
existing system include files with these modified header
files. They can be obtained from
To build FSU Pthreads on your system, all you should need to
do is run GNU make. The
Makefile in FSU-threads-3.14.tar.gz is
set up to make FSU-threads.
You can run ./configure in the
threads/src directory and select the SCO
OpenServer option. This command copies
Makefile. Then run
To install in the default
directory, log in as
root, and then
cd to the
directory and run make install.
Remember that you must use GNU make to build MySQL.
If you do not start mysqld_safe as
root, you should get only the default 110
open files per process. mysqld writes a
note about this in the log file.
With SCO 3.2V4.2, you should use FSU Pthreads version 3.14 or newer. The following configure command should work:
CFLAGS="-D_XOPEN_XPG4" CXX=gcc CXXFLAGS="-D_XOPEN_XPG4" \ ./configure \ --prefix=/usr/local/mysql \ --with-named-thread-libs="-lgthreads -lsocket -lgen -lgthreads" \ --with-named-curses-libs="-lcurses"
You may have problems with some include files. In this case, you can find new SCO-specific include files at ftp://ftp.zenez.com/pub/zenez/prgms/SCO-3.2v4.2-includes.tar.gz.
You should unpack this file in the
include directory of your MySQL source
SCO development notes:
MySQL should automatically detect FSU Pthreads and link
The SCO development libraries are re-entrant in FSU Pthreads. SCO claims that its library functions are re-entrant, so they must be re-entrant with FSU Pthreads. FSU Pthreads on OpenServer tries to use the SCO scheme to make re-entrant libraries.
FSU Pthreads (at least the version at
ftp://ftp.zenez.com) comes linked with GNU
malloc. If you encounter problems with
memory usage, make sure that
gmalloc.o is included in
In FSU Pthreads, the following system calls are
The CSSA-2001-SCO.35.2 (the patch is listed in custom as erg711905-dscr_remap security patch (version 2.0.0)) breaks FSU threads and makes mysqld unstable. You have to remove this one if you want to run mysqld on an OpenServer 5.0.6 machine.
If you use SCO OpenServer 5, you may need to recompile FSU
InnoDB may hang at a
SCO provides operating system patches at ftp://ftp.sco.com/pub/openserver5 for OpenServer 5.0.x.
Pre-OSR506 security fixes. Also, the
telnetd fix at
libresolv.so.1 with instructions for
installing on pre-OSR506 systems.
It is probably a good idea to install these patches before trying to compile/use MySQL.
Beginning with Legend/OpenServer 6.0.0, there are native threads and no 2GB file size limit.