Installation guide

1.6 Extensions to atom’s Programmable Interfaces
The atom command has been enhanced. It now provides a -pthread flag
and RTL routines to help tool-writers develop thread safe program analysis
tools, including support for deferred (but not asynchronous) thread
cancellation. The cancellation support has some impact on the performance
of thread-safe tools. See the atom(1), Thread(5), and
pthread_setcanceltype(3) reference pages.
The atom command’s AddCallProto(5) instrumentation RTL routine
now provides the FREGV argument type, to let tool writers pass floating-
point register values to analysis routines.
The atom command’s -gp flag now retains all debug information in
applications that were compiled with the -g option.
The atom command’s new -w2 switch suppresses warnings regarding
analysis routines.
1.7 Ability to Examine the Stack of a User Program that
Caused a Kernel Crash Dump
You can now view the user stack of a program that precipitated a kernel
crash dump. For more information, see Section 5.5.
1.8 Compaq Analyze Utility
The Compaq Analyze utility enables you to analyze binary error log files
(located in /var/adm/binary.errlog). Refer to the System
Administration guide for information on using this new tool.
Compaq Analyze supports selected EV6-class processors in this release.
To function on a supported system, Compaq Analyze requires a modified
Common Error Log Header, which is created automatically if binlogd
detects that the value of rpb_proctype is equivalent to ST_DEC_6600
(EV6-series processors). This modified header is supported by DECevent.
The AlphaServer 8400 (with EV6 processors) is not supported by Compaq
Analyze. This system is supported by DECevent using the older error log
format.
1.9 Secure Version of syslog
The security of the syslog facility has been enhanced in this release.
Unless the domain host name of a remote host is entered in the local file,
/etc/syslog.auth, the local system will not log any syslog messages
from that remote host.
1–4 New and Changed Features