10-09-2012
ZFS : Can arc size value exceed Physical RAM ?
Hi,
kstat -p -m zfs -n arcstats -s size returns
zfs:0:arcstats:size 8177310584
this values is approx (7.61 GB)
but my Physical Memory size is only 6144 Megabytes.
Can this happen ?
if yes, then how can I find free memory on the system.
BTW, I ran the kstat commands from a Non global zone.
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LEARN ABOUT OPENSOLARIS
kstat_delete
kstat_delete(9F) Kernel Functions for Drivers kstat_delete(9F)
NAME
kstat_delete - remove a kstat from the system
SYNOPSIS
#include <sys/types.h>
#include <sys/kstat.h>
void kstat_delete(kstat_t *ksp);
INTERFACE LEVEL
Solaris DDI specific (Solaris DDI)
PARAMETERS
ksp Pointer to a currently installed kstat(9S) structure.
DESCRIPTION
kstat_delete() removes ksp from the kstat chain and frees all associated system resources.
RETURN VALUES
None.
CONTEXT
kstat_delete() can be called from any context.
SEE ALSO
kstat_create(9F), kstat_install(9F), kstat_named_init(9F), kstat(9S)
Writing Device Drivers
NOTES
When calling kstat_delete(), the driver must not be holding that kstat's ks_lock. Otherwise, it may deadlock with a kstat reader.
SunOS 5.11 4 Apr 1994 kstat_delete(9F)