IBM Tivoli Access Manager for e-business: WebSEAL Administration ...

This
parameter
determines
the
cut-off
point
for
servicing
requests
across
a
junction.
When
the
worker-thread-hard-limit
is
exceeded,
error
messages
are
sent
(every
30
seconds)
to
the
WebSEAL
error
log
file.
In
addition,
the
user
is
sent
a
503
″Service
Unavailable″
message.
For
example,
when
worker-threads
=
50,
a
setting
of
80
(%)
causes
error
messages
to
be
issued
when
the
junction
tries
to
consume
more
than
40
worker
threads.
All
requests
representing
greater
than
40
worker
threads
on
the
junction
are
returned
with
a
503
″Service
Unavailable″
message.
The
default
value
of
100
(%)
indicates
there
is
no
limit.
These
global
settings
apply
equally
to
all
configured
junctions.
When
configuring
these
two
parameters,
it
is
logical
to
set
the
″soft″
limit
to
a
lower
value
than
the
″hard″
limit.
Per-junction
allocation
of
worker
threads
for
junctions
Alternatively,
you
can
limit
worker
thread
consumption
on
a
per-junction
basis.
The
following
options
to
the
pdadmin
server
task
create
command
allow
you
to
specify
hard
and
soft
worker
thread
limits
on
a
specific
junction:
v
–l
percent_value
This
option
sets
a
value
(percent)
on
the
junction
that
defines
the
soft
limit
for
consumption
of
worker
threads.
As
in
the
global
soft
limit
setting,
this
option
causes
warning
messages
to
be
issued
when
the
junction
consumes
more
worker
threads
than
allowed
by
the
setting.
v
–L
percent_value
This
option
sets
a
value
(percent)
on
the
junction
that
defines
the
hard
limit
for
consumption
of
worker
threads.
As
in
the
global
hard
limit
setting,
this
option
causes
warning
messages
to
be
issued
when
the
junction
tries
to
consume
more
worker
threads
than
allowed
by
the
setting.
In
addition,
the
user
is
sent
a
503
″Service
Unavailable″
message.
For
example:
pdadmin>
server
task
webseald-
create
-t
tcp
-h
\
-l
60
-L
80
Per-junction
settings
always
override
the
global
settings
in
the
WebSEAL
configuration
file.
Ensure
that
the
settings
on
a
specific
junction
do
not
adversely
affect
the
policy
established
by
the
global
settings.
Troubleshooting
notes
v
You
can
use
the
pdadmin
server
task
show
command
to
view
the
number
of
active
worker
threads
on
a
specific
junction:
pdadmin>
server
task
webseald-
show
/
This
information
might
be
useful
when
you
want
to
determine
the
location
of
a
junction
that
is
absorbing
more
than
its
share
of
worker
thread
resources.
v
If
you
specify
a
soft
limit
value
that
is
greater
than
the
hard
limit
value
on
a
specific
junction,
the
junction
will
not
be
created.
v
You
must
specify
both
soft
and
hard
limit
values
(both
–l
and
–L
options)
on
a
specific
junction.
Chapter
2.
WebSEAL
server
configuration
43