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Full Discussion: How much Swap is too much?
Operating Systems HP-UX How much Swap is too much? Post 302296185 by Neo on Tuesday 10th of March 2009 02:52:13 PM
Old 03-10-2009
Quote:
Originally Posted by scotbuff
The boss mentioned about not caring about nanoseconds of performance.
I assume your boss was joking. Swap can ad many milliseconds, not nanoseconds. In addition, thrashing due to swap can add seconds or more.

I recommend clustering:

Tuxedo Clustering

Quote:
The heart of the Tuxedo system is the Bulletin Board (BB). This is a shared memory segment that contains the state of a Tuxedo domain. Servers, services, transactions, and clients are all registered in the BB providing a global view of their state across the machines within a domain. To coordinate updates to the BB a process called the Bulletin Board Liaison (BBL) runs on each machine to keep the local copy of the BB up-to-date. A master machine runs a process called the “Distinguished Bulletin Board Liaison” that coordinates the updates to the BB. This allows each machine to have a view of what servers, services, transactions, and clients are on each machine within the domain.

Another process on each machine called the Bridge is responsible for passing requests from one machine to another. This allows Tuxedo to spread load across the various machines within a domain and allows servers and services to be running on multiple machines. In addition the BBL and Bridge monitor each other and restart the other should one fail. In the advent of a failure of the master machine, another machine designated as a backup master can take over the function of master machine. Also, since machines within a single domain can be of different architectures (x86, IA32, SPARC, P-Series, etc.), the Bridge is also responsible for handling differences in things like endianness.
 

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LEARN ABOUT MOJAVE

ypwhich

ypwhich(1)							   User Commands							ypwhich(1)

NAME

       ypwhich - return name of NIS server or map master

SYNOPSIS

       ypwhich [-d domain] [ [-t] -m  [mname] | [-Vn] hostname]

       ypwhich -x

DESCRIPTION

       ypwhich	returns  the  name  of	the  NIS server that supplies the  NIS name services to a NIS client, or which is the master for a map. If
       invoked without arguments, it gives the NIS server for the local machine.  If hostname is specified, that machine is queried  to  find  out
       which NIS master it is using.

       Refer to ypfiles(4) for an overview of the  NIS name services.

OPTIONS

       -d domain       Use domain instead of the default domain.

       -t	       This option inhibits map nickname translation.

       -m mname        Find  the  master  NIS server for a map.  No hostname can be specified with -m. mname can be a mapname, or a nickname for a
		       map. When mname is omitted, produce a list of available maps.

       -x	       Display the map nickname translation table.

       -Vn	       Version of  ypbind, V3 is default.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWnisu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       ypfiles(4), attributes(5)

SunOS 5.10							    7 Apr 1995								ypwhich(1)
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