VSADV(2) — Series 500 Only

NAME

vsadv − advise system about backing store usage

SYNOPSIS

#include <sys/ems.h> vsadv (index);
int index;

HP-UX COMPATIBILITY

Level: Backing Store Control - HP-UX/STANDARD

Origin: HP

Remarks: Vsadv is not currently implemented on the Series 200.

DESCRIPTION

This call requests that all future backing store space allocated for this process be placed on the backing store device specified by index (see vson(2)). It may be used to tune an application to the local system environment. This request remains in effect until the next call to vsadv by this process. An index of -1 will set backing store allocation back to the default system policy.

This call is advisory in nature and will never cause subsequent program failures (e.g. if the device has no room, the system will simply override the request and use another device).

This characteristic is inherited across fork(2) and exec(2).

This call may be reduced to a no-op.

HARDWARE DEPENDENCIES

This system call is supported on Series 500 only.

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