10-18-2017
This could be caused by a number of things. What follows is not an exhaustive list but let's highlight a few.
1. Is that zone really busy for some reason? Try running performance stats (sar)
2. Is that zone being strangled by some resource constraint imposed when the zone was configured. Compare config with other zones. (zonecfg)
3. Are these zones whole root or sparse? Is usage of the global zone affecting this zones performance?
4. How is the user authentication carried out? Locally or remotely? Compare with other zones.
5. Can the login delay be interrupted? Can you break out of the delay time by hitting Ctrl-C? Does the prompt appear immediately if you do that? Or is the process uninterruptable?
6. The zone may be doing a reverse lookup to a node that isn't responding. Compare resolv.conf files between zones. Is the server(s) reachable? Working with one login client can you fix the problem by putting it's name & ip into that zones /etc/hosts making it instantly resolvable.
7. Does that zone have exclusive use of its own network interface? If it's sharing an interface (with the global zone for example) is traffic generated by the other zone delaying a reverse lookup?
Let me stop there for the moment. It's difficult to provide a definitive answer without you doing some of your own research. Do please post back your progress.
We're all here to help.
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LEARN ABOUT PHP
datetimezone
DATETIMEZONE(3) 1 DATETIMEZONE(3)
The DateTimeZone class
INTRODUCTION
Representation of time zone.
CLASS SYNOPSIS
DateTimeZone
DateTimeZone
Constants
o const integer$DateTimeZone::AFRICA1
o const integer$DateTimeZone::AMERICA2
o const integer$DateTimeZone::ANTARCTICA4
o const integer$DateTimeZone::ARCTIC8
o const integer$DateTimeZone::ASIA16
o const integer$DateTimeZone::ATLANTIC32
o const integer$DateTimeZone::AUSTRALIA64
o const integer$DateTimeZone::EUROPE128
o const integer$DateTimeZone::INDIAN256
o const integer$DateTimeZone::PACIFIC512
o const integer$DateTimeZone::UTC1024
o const integer$DateTimeZone::ALL2047
o const integer$DateTimeZone::ALL_WITH_BC4095
o const integer$DateTimeZone::PER_COUNTRY4096
Methods
o public DateTimeZone::__construct (string $timezone)
o public array DateTimeZone::getLocation (void )
o public string DateTimeZone::getName (void )
o public int DateTimeZone::getOffset (DateTime $datetime)
o public array DateTimeZone::getTransitions ([int $timestamp_begin], [int $timestamp_end])
o publicstatic array DateTimeZone::listAbbreviations (void )
o publicstatic array DateTimeZone::listIdentifiers NULL ([int $what = DateTimeZone::ALL], [string $country])
PREDEFINED CONSTANTS
o DateTimeZone::AFRICA -Africa time zones.
o DateTimeZone::AMERICA -America time zones.
o DateTimeZone::ANTARCTICA -Antarctica time zones.
o DateTimeZone::ARCTIC -Arctic time zones.
o DateTimeZone::ASIA -Asia time zones.
o DateTimeZone::ATLANTIC -Atlantic time zones.
o DateTimeZone::AUSTRALIA -Australia time zones.
o DateTimeZone::EUROPE -Europe time zones.
o DateTimeZone::INDIAN -Indian time zones.
o DateTimeZone::PACIFIC -Pacific time zones.
o DateTimeZone::UTC -UTC time zones.
o DateTimeZone::ALL -All time zones.
o DateTimeZone::ALL_WITH_BC -All time zones including backwards compatible.
o DateTimeZone::PER_COUNTRY -Time zones per country.
PHP Documentation Group DATETIMEZONE(3)