Dell Acceleration Appliances for Databases - Manual (Page 64)

Performance Tuning and Filesystems for Linux
Initiators
_____________________________________________________________________
The
iontuner
utility does performance tuning for Linux-based initiators used with ION Accelerator.
It is available for download at http://www.fusionio.com/files/ion-optimization-scripts .
Here are a few of its features:
• Balances an initiator's interface IRQ load between CPUs and NUMA nodes
• Tunes block device parameters for ION block devices
• Warns the user of power settings that may negatively impact performance
• Supports RHEL6.x/OL6.x and SLES11
• Has been tested on the Intel Nehalem / Westmere and Intel Sandy Bridge / Ivy Bridge
architectures
INSTALLATION
To install
iontuner.rpm
, run the following commands:
rpm -ivh iontuner*.rpm
reboot
When upgrading from releases prior to 1.1.0, remove the old package and install the new one,
rather than upgrading (use
rpm -e, rpm -i
rather than
rpm –U
).
PERFORMANCE EXPECTATIONS
iontuner
improves performance only when the bottleneck is initiator storage performance.
Configurations that are application-limited, fabric-limited, or target-limited will see little benefit from
iontuner
.
iontuner
is primarily aimed at improving performance on NUMA initiators, but it can improve
performance on any Linux initiator. The impact of
iontuner
will scale with the number of NUMA
nodes in the initiator system.
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