06-19-2015
Try echo "::memstat" | mdb -kw"
I would suspect ZFS ARC cache has used most of the memory.
If that is the case, you can limit ZFS ARC cache in /etc/system (it will require a reboot).
For instance, added as last line in /etc/system set zfs:zfs_arc_max=4294967296 will limit the ARC cache to 4 GB.
You should consider this limit if you are running databases on ASM (real small arc cache).
Hope that helps
Regards
Peasant.
This User Gave Thanks to Peasant For This Post:
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LEARN ABOUT OPENSOLARIS
arcmsr
arcmsr(7D) Devices arcmsr(7D)
NAME
arcmsr - SAS and SATA HBA driver for Areca Hardware Raid devices
DESCRIPTION
The arcmsr host bus adapter driver is a SCSA-compliant nexus driver that supports Areca Technology SAS and SATA RAID devices.
Supported SATA RAID cards:
ARC-1110 pci17d3,1110
ARC-1120 pci17d3,1120
ARC-1130 pci17d3,1130
ARC-1160 pci17d3,1160
ARC-1170 pci17d3,1170
ARC-1201 pci17d3,1201
ARC-1210 pci17d3,1210
ARC-1220 pci17d3,1220
ARC-1230 pci17d3,1230
ARC-1260 pci17d3,1260
ARC-1270 pci17d3,1270
ARC-1280 pci17d3,1280
Supported SAS RAID cards:
ARC-1380 pci17d3,1380
ARC-1381 pci17d3,1381
ARC-1680 pci17d3,1680
ARC-1681 pci17d3,1681
CONFIGURATION
There are no user configurable parameters available. Please configure your hardware through the host system BIOS.
FILES
/kernel/drv/arcmsr 32-bit ELF kernel module.
/kernel/drv/amd64/arcmsr 64-bit kernel module (x64 only).
/kernel/drv/arcmsr.conf Driver configuration file (contains no user-configurable options).
ATTRIBUTES
See attributes(5) for a description of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Architecture |x86, x64 only |
+-----------------------------+-----------------------------+
|Availability |SUNWarcmsr |
+-----------------------------+-----------------------------+
SEE ALSO
prtconf(1M), attributes(5), scsi_hba_attach_setup(9F), scsi_sync_pkt(9F), scsi_transport(9F), scsi_inquiry(9S), scsi_device(9S),
scsi_pkt(9S)
Small Computer System Interface-2 (SCSI-2)
http://www.areca.com.tw/products/main.htm
http://developer.intel.com/design/iio/index.htm --(Intel Corp IO processors provide the underlying RAID engine for the supported devices).
SunOS 5.11 28 Feb 2008 arcmsr(7D)