TECHNICAL INFORMATION DOCUMENT

TITLE:              PTF2027 - Fix for memory leak in sleep
DOCUMENT ID:        TID300210
DOCUMENT REVISION:  A
DATE:               17MAY95
ALERT STATUS:       Yellow
INFORMATION TYPE:   Symptom Solution
README FOR:         tf2027

PRODUCT and VERSION:
UnixWare 2.0

ABSTRACT:

A memory leak occurs in sleep() when using threads. This will cause a
starvation of system resources over time.


SYMPTOM

Symptom are a ENOMEM in what is apparently a lightly loaded system.

SOLUTION

Apply the tf2027 file.


Installation Instructions:  

DATATYPE: datastream

1.  Download the tf2027.Z and tf2027.txt files to the /tmp directory
    on your machine.

2.  Read the release notes contained in this file and follow the
    instuctions to add the packages to your system.

3.  Now become root, uncompress the file and add the package to your 
    system using the following commands:

        $ su
        # uncompress /tmp/tf2027.Z
        # pkgadd -d /tmp/tf2027

Solution Specifics

Product And Version
-------------------

UnixWare 2.01

General Description.
-------------------

A failure to correctly free memory allocated in the sleep() library call
in libthreads.

New Features.
------------

None.

Software Notes and Recommendations.
----------------------------------


This ptf requires that UnixWare 2.01 be installed. There
are no other dependencies for its installation. This ptf
will be included in the UnixWare 2.02 release and not need
to be re-installed.

Testing of the modified software contained in this package has been
conducted only to the extent necessary to confirm that it resolves the
problem(s) stated above ("Symptom").  Such testing consists of
recreating the problem conditions and verifying that the problem 
no longer occurs.  No other testing of this software has been done.

Hardware Notes and Recommendations.
----------------------------------

This PTF is targeted for the i386, i486 and Pentium CPU's.