Configuring HP SIM for Optimal Performance in Large Environments
msdtf
is
launched
by
the
service.
The
main
purpose
of
this
process
is
to
handle
the
audit
logging and
SSH
command
line
execution
for
MSA,
SSA,
and
command
launch
tools.
Memory
for
this process
is
not
nearly
as
high,
usually
less
than
100
MB.
mxinventory
mxinventory
is
started
as
needed
for
WBEM
and
DMI
data
collection.
When
idle
for
longer periods
it
shuts
itself
down
for
a
short
time.
Note
that
for
there
might
be
two
instances
of
this
process started,
one
for
WBEM
the
other
for
DMI.
System
Page
file
If
your
configuration
has
two
or
more
hard
disk
drives,
HP
recommends
that
you
move
the
system page
file
to
a
different
drive
than
the
one
where
the
Microsoft
Windows
2008
operating
system
is installed.
Splitting
the
page
file
across
multiple
disks
also
improve
s
paging
performance.
Disk
subsystem
The
disk
subsystem
has
very
little
effect
on
web
server
performance
for
static
workloads
that
can
be
cached
in
memory.
For
web
servers
that
have
less
memory
or
that
use
disk
input/output
to
generate
dynamic
content,
a
RAID
subsystem
with
at
least
four
disks
can
improve
performance
substantially over
a
configuration
that
uses
single
disks
connected
to
a
SCSI
controller.
Network
subsystem
The
total
bandwidth
available
to
the
web
server
spread
across
all
of
the
network
adapters
in
the server
sets
the
limit
for
the
number
of
bits
that
a
server
can
send
or
receive.
For
web
servers
on
the Internet,
this
is
probably
the
most
common
bottleneck.
Correspondingly,
the
network
bandwidth
limits the
request
rate
a
server
can
handle.
To
determine
the
performance
capabilities
of
a
web
server,
you must
make
sure
that
there
is
enough
network
bandwidth
so
that
the
tests
reach
the
server’s
peak
performance.
For
instance,
if
a
powerful
server
only
has
100
Mb
of
bandwidth,
this
could
be
the factor
that
prevents
the
server
from
performing
better.
If
the
CPU
is
the
bottleneck,
and
there
is
still some
network
bandwidth
available,
using
a
network
adapter
that
supports
the
offloading
capabilities in
Microsoft
Windows
2008
can
free
CPU
cycles
to
process
more
requests.
For more information regarding the tuning of Windows Server 2008, please consult the following
Microsoft document:
Performance Tuning Guidelines for Windows Server 2008
TcpTimedWaitDelay
When managing a large number of devices with Systems Insight Manager, the CMS opens many
network connections during the various polling and communications tasks. When a TCP connection is
initiated, used, and closed, a standard interval of time must pass between the time the connection is
closed and the resources are released. Once the connection is released, it can be used to create a new
connection.
When polling and communicating with a very large number of systems, there is a possibility that
opening new connections will be attempted even though the previous closed connections aren’t yet
available. In order to combat this, HP recommends that you change the TcpTimedWait delay from 240
seconds (0xfe) to 120 seconds (0x78). This is accomplished by locating the following registry key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Tcpip\Parameters and changing the
TcpTimedWaitDelay
dword value to 0x78.
Tuning
Microsoft
SQL
Server
The
performance
of
Microsoft
SQL
Server
depends
on
the
interaction
of
many
factors,
ranging
from
the
hardware
that
the
system
is
running
to
the
application
coding
techniques
used.
Microsoft
SQL
Server
provides
methods
and
tools
to
tune
Microsoft
SQL
Server
for
optimum
performance.
Keep
these