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1993-06-16
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DOMAIN/OS UPDATE
April 1993
1.0 INTERWORKS '93 CONFERENCE -- APRIL 25-28
InterWorks is the International Hewlett-Packard Workstation
Users Group. The Software Technology Division (SWT) will
participate at the InterWorks '93 conference (Phoenix, Arizona,
U.S.A.). A product update will be provided to Domain/OS users
and SWT will introduce its plans for support of existing HP-UX
operating system products for the Series 300 and Series 400. SWT
will participate in:
o Presentations targeting your specific concerns and needs
o Question and answer desk -- 68K Workstation Operating System
Support: Domain and HP-UX -- Come talk with us
o Focus session -- Patch process
o Technical lab/product activities (Domain/OS, HP-UX, and NFS)
SWT PRESENTATIONS AT INTERWORKS '93
SWT will also deliver the following presentations: (1) 68K
Operating System (OS) Strategy, (2) Domain/OS -- What's New?,
and (3) HP-UX/Domain Interoperability with ONC/NFS.
1. 68K OS Strategy. Addresses HP's commitment to support the
installed base of HP Domain (DN Series and Series 400) and HP-UX
(Series 300 and Series 400) users through the year 2000. Also
describes services and support to be provided based on version
of operating system in use.
2. Domain/OS -- What's New? At InterWorks '92 (New Orleans,
Louisiana, U.S.A.), you requested interoperability enhancements
between Domain and Series 700 HP-UX systems. SWT listened. (See
also ONC/NFS presentation and following article regarding the
Domain '93 Program.) You also requested an improved software
patch process and distribution plan. We heard you and we've
responded. (See also following article re: Improvements to
Domain Patch Process.) The Domain/OS presentation includes
announcement of new enhancements being added to SR10.4 in July
1993. Those enhancements include:
o X11R5 run-time environment
o Motif 1.2 run-time
o HPterm 1.3
o User Environment Development Kit
o Domain patch process improvements
3. HP-UX/Domain Interoperability with ONC/NFS. Presents the
latest NFS features (NFS 4.1) available on HP-UX 9.0 and Domain
SR10.4. Also discusses interoperability between Domain and HP-UX
through the use of NFS, NIS and automount. Supplies answers to
the most commonly asked questions about Domain NFS 4.1 and
interoperability with HP-UX.
INTERWORKS MEMBERSHIP
We encourage you to join InterWorks and attend the conference.
Membership is free and your involvement can directly affect
Domain's future. For membership information, contact Carol
Relph; Manager, Member Services; c/o Hewlett-Packard Company;
Workstation Business Unit; 300 Apollo Drive, MS# IWorks;
Chelmsford, MA 01824-3623.
2.0 IMPROVEMENTS TO THE DOMAIN PATCH PROCESS
Based on information received through InterWorks, customer
visits, mail and phone surveys, your top two concerns relate to
patches:
1. Domain patch documentation is incomplete and difficult to
read.
2. Domain patch information is not proactively communicated
to you.
A multi-functional SWT team investigated existing patch
deliverables and processes with an eye to improvement. The
changes they recommended and implemented included:
1. Improving readability and completeness of patch documentation.
The patch documentation has been reformatted to make it easier
to read. Improvements include a common overall structure for
patch descriptions, which enhances readability and documentation
completeness. The new structure follows:
A. Patch contents (affected filesets)
B. Compatible environment (10.3.5, 10.4)
C. Required patches (other related patches)
D. Obsolete patches (those patches "rolled up" into this
patch)
E. Detailed patch information
2. Proactively communicating patch documentation in a timely way.
SWT is establishing improved methods to communicate and
distribute valuable support information such as patch
documentation. One method for timely distribution of this
information is to use HP SupportLine.
HP SupportLine is available to all customers with an HP support
contract. Accessed via modem or internet, it provides on-line
access to marketing and support information as well as patch
documentation. Should you find reference to a patch in HP
SupportLine that you want to load on your system, there is a
facility to electronically download the patch. Users of HP
SupportLine can also electronically submit assistance requests
to the HP Response Center, or provide general feedback to HP.
Past users of HP SupportLine have noticed a lack of current
on-line information. Because SWT plans to use HP SupportLine
extensively as a means to improve the quantity, quality and
timeliness of the support information you receive, the HP
SupportLine database must be kept up to date. SWT is committed
to make timely submittals to the database. This commitment will
help assure that you receive the most current information with
regard to your Domain environment.
To help notify you that new data is available on HP SupportLine,
a brief overview of the updated information will be sent to
comp.sys.apollo and the InterWorks notes group whenever the HP
SupportLine database is updated. You then will know to check HP
SupportLine for details.
SWT plans to submit updated patch information to HP SupportLine
beginning in May 1993. Log-on procedures will be communicated to
you via the next quarterly Domain mailing, scheduled for June.
Made at your request, these specific improvements to the patch
process should deliver increased value and satisfaction with
your HP support contract.
3.0 DOMAIN '93 PROGRAM
SWT supports Domain users such as you by providing Current
Product Engineering (CPE) and customer-driven enhancements to
help extend your existing system investments. SWT has recently
developed a new update for Domain/OS SR10.4. The release
objectives are to:
o Provide continued investment protection for your Domain
environment
o Address your top graphics requests
o Provide interoperability with HP Series 700 systems based on the
HP-UX operating system
RELEASE CONTENTS
The Domain '93 program release includes:
o Support for X11R5
o Motif 1.2 Shared Libraries
o hpterm 1.3
o User Environment Development Kit (UEDK)
o Application note -- Configuring your Domain node for X
Terminal-like Operation
1. Support for X11R5: Run-time environment which allows the
execution of X11R5-compliant applications. (NOTE: the X11R5
server is backward-compatible with previous versions of X
Windows applications.) The major components of X11R5 are an X
Server, a font server, fonts, a set of shared and archived
libraries, various standard clients and header files. The major
differences between X11R5 and the existing X11R4 are:
o A new more general mechanism for storing/accessing fonts.
o Internalization hooks.
o Ability to use new color spaces.
o Defect fixes and performance enhancements.
2. Motif 1.2 Shared Libraries: Motif 1.2 shared libraries are
those libraries required for running Motif 1.2-compliant
applications within an X11R5 environment.
3. hpterm 1.3: X11R4-compliant application for running an HP
2392A terminal emulation window. Useful for accessing HP
SupportLine via modem or internet.
4. User Environment Development Kit (UEDK): The UEDK enables the
creation of applications which are X11R5- or Motif
1.2-compliant. It includes the X11R5 archive libraries, X11R5
header files, and Motif 1.2 development environment.
5. Application Note -- Configuring your Domain node as an X
Terminal-like Operation: The application note outlines how to
configure a Domain node as an X Terminal. Beneficial when using
a high-performance S700 server in conjunction with Domain nodes.
For example, with such a configuration, the performance of a
DN3000 can be increased to approximate that of an entry-level
Series 400.
RELEASE AVAILABILITY July 1, 1993
The Domain '93 program release (except for the UEDK*) is free of
charge to those who have a current Domain/OS HP support
contract. In early summer, you will receive a post-paid business
reply card and instructions on how to order the release. You may
complete the card and return it to request receipt of a
Domain/OS 10.4 update tape. By providing the release only to
those who respond with the card, we can reduce the cost of
release distribution. Reducing costs can help us focus
resources on improvements to the Domain environment.
Most of the content for the Domain '93 program release was
included as a result of direct feedback from Domain support
customers such as you. We have relied on your direction via the
InterWorks conference, customer visits, paper and phone surveys.
Once again we encourage you to take the time to partipate in
Domain's future direction by filling out the surveys you receive
from us. The information we receive is key to delivering the
enhancements you need.
*You may purchase the UEDK for $1250 through SWT telesales after
July 1, 1993. Additional instructions will be included in our
June communications to you.
4.0 NON-SCSI CT DRIVES -- tar PERFORMANCE
A number of customers who use the tar command to write files
onto cartridge tape (CT) have reported a performance loss of a
factor of two or greater with tar on SR10.4 compared to
SR10.3.5. The problem has been seen only with non-scsi
cartridge tape drives.
SWT engineers have investigated the problem. Generally, the
performance of tar with SR10.4 is better than with SR10.3.5.
However, under certain conditions, tar performance is worse with
SR10.4 than SR10.3.5. The key to avoiding these conditions and
improving performance is to use tar with the correct options for
SR10.4. By using the correct options, tar performance with
SR10.4 can be 30-40% better than with SR10.3.
When you use tar, you specify the device you wish to write to by
specifying (on the tar command line) the name of one of the
device special files in the /dev directory. In Domain, each of
these device special files has a type. You can find out the type
of a file by using the Aegis command:
/com/ld -tu <filename>
Access to a device is mediated by a software module known as a
type manager. (The type of the file determines which type
manager will mediate access to the file.) Each type manager has
different performance characteristics. SR10.4 uses a new type
manager--"uct"--when reading or writing to /dev/rct8. SR10.3
uses the "mt" type manager when reading or writing to /dev/rct8.
The following table contrasts the two type managers:
SR10.4 uct type manager SR10.3 mt type manager
o Writing or reading to the CT via o Writing or reading to the CT via
/dev/rct8 uses the uct type manager. /dev/rct8 uses the mt type manager.
o Provides better performance for o Provides better performance for
writes of large chunks of data, numerous writes of small chunks of
which is what tar does when used data, which is what tar does when
with a large blocking factor. used with a small blocking factor
(set via the b flag on the tar
command line.
o Does not buffer data. Writes o Accumulates data in a buffer.
data to kernel immediately as When buffer reaches a certain size,
received. (This is "correct" UNIX it passes data to the kernel, then
behavior, important to customers to the CT drive. (Buffering sometimes
who require strict UNIX behavior causes problems for customers who
from tar.) Less efficient when it require strict UNIX behavior from tar.)
is repeatedly called with small
chunks of data. Efficiency can be
increased by explicitly resetting
the blocking factor.
SETTING THE BLOCKING FACTOR FOR OPTIMAL PERFORMANCE
With the uct or mt type manager, the tar command uses a small
blocking factor by default. To get optimal performance in
SR10.4, you must explicitly set the blocking factor to a large
value on the tar command line. Note: A blocking factor of 512 is
optimal for large files (100 kbytes or greater).
For example with SR10.4, by using tar with a large blocking
factor (512 in the following example) performance will be as
good or better than the same command used with SR10.3:
tar cfb /dev/rct8 512 /etc/salvol
Without using an explicit large blocking factor (see following
example) tar may not perform as well.
tar cf /dev/rct8 /etc/salvol
It is still possible to use the mt type manager with SR10.4.
Write to:
/dev/rctfp8
instead of
/dev/rct8
To do so, you must first rewind the cartridge tape device. Use
the following sequence of commands:
/usr/apollo/bin/mt -f /dev/rctfp8 rewind
tar cf /dev/rctfp8 <filename>
NOTE--Be sure to use:
/usr/apollo/bin/mt
instead of
/bsd4.3/usr/bin/mt
OTHER FACTORS WHICH MAY AFFECT TAR PERFORMANCE
In addition to the difference between type managers in SR10.4
and SR10.3 and the use of tar command line options, a number of
other factors may affect tar performance. On machines with a
small amount of physical memory and those that are running
discless, tar may show decreased performance.
5.0 HP SWT SUPPORTS HP-UX OPERATING SYSTEM (Series 300/400)
SWT now supports the HP-UX operating system (Series 300/400). As
in the case of the Domain/OS, users of HP-UX will benefit from
focused, customer-driven support through the year 2000. As with
Domain, users will be able to maintain, mix or migrate their
operating system investments. SWT will provide a stable
environment for these users, as well as specific functionality
critical to system interoperability and migration.
6.0 QUESTIONS AND ANSWERS
Q: What does HP SWT's support of HP-UX mean to me?
A: Whether you use Domain or HP-UX (or both) on Motorola
68000-based platforms, you will receive support at least through
the year 2000. Enhancements, defect fixes and features will be
driven by you and support revenues. HP is committed to provide
interoperability between 68000-based HP-UX, Domain, and future
releases of PA-RISC HP-UX.
Q: Are Domain 10.4 and HP-UX 9.0 (Series 300/400) the last
releases of these operating systems?
A: No. HP will make the necessary investments to provide
continuing enhancements and support of these operating systems.
Q: Why transition the Domain and now HP-UX (68000) operating
systems to SWT?
A: The transfer of Domain and now HP-UX to SWT coincides with
HP's decision to pursue further development of its more
powerful, lower-priced Series 700 PA-RISC product line. As an
organization dedicated to providing extended value and support
to users of established HP software products, SWT can focus on a
different set of unique customer needs.