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.Dd September 20, 2005
.Dt purge 8
.Sh NAME
.Nm purge
.Nd force disk cache to be purged (flushed and emptied)
.Sh SYNOPSIS
.Nm purge
.Sh DESCRIPTION
.Nm Purge
can be used to approximate initial boot conditions with a cold disk buffer cache for performance analysis. It does not affect anonymous memory that has been allocated through malloc, vm_allocate, etc.
.Pp
.Sh SEE ALSO
.Xr sync 8 ,
.Xr malloc 3
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