01-28-2010
I guess you can approximate this by manual simulation. Set manually a system with 1, 5 and 7 users, measure and multiply by appropriate factor.
Other hint is to use existing experiences. Are you aware of SunRay systems? They are just like you've described with some servers handling many, many users. Try googling for "sunray workload" and maybe you'll find some stats and figures put there by other people.
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LEARN ABOUT OSF1
prestotab
prestotab(4) Kernel Interfaces Manual prestotab(4)
NAME
prestotab - Lists the file systems for Prestoserve to accelerate
SYNOPSIS
/etc/prestotab
DESCRIPTION
The /etc/prestotab file contains descriptive information about the mounted file systems whose I/O will be automatically accelerated with
Prestoserve when the system starts up. This file is created by the prestosetup command, which prompts you for the file systems to automat-
ically accelerate when the system starts up. You can also manually create the file.
The /etc/rc.config file contains variables that specify the Prestoserve configuration. If you configure Prestoserve to automatically
accelerate file systems when the system starts up, the Prestoserve startup script (/sbin/init.d/presto) accelerates the mounted file sys-
tems that are specified in the /etc/prestotab file or, if the file is empty or does not exist, all the local writable file systems that are
currently mounted.
The /etc/prestotab file contains a list of directory mount points (for example, /usr/users). Block devices should not be included because
some functional subsystems, such as the Advanced File System (AdvFS), can map more than one block device to a mount point.
Entries in the /etc/prestotab file must be separated by spaces or must be located on separate lines. You cannot specify comments in the
file.
EXAMPLES
An example of the /etc/prestotab file is as follows: /usr/users/disk1 /usr/users/disk2 /var/spool
FILES
File pathname.
SEE ALSO
Commands: presto(8), prestosetup(8)
Guide to Prestoserve delim off
prestotab(4)