Os Settings; Ubuntu: Use "Generic" Kernels For Highest Io Performance; Suse: Enable Unsupported Modules To Allow Driver Loading; Enhance Performance By Disabling Cpu Throttling - Seagate ST1100FR0000 User Manual

5.0 OS S
ETTINGS
5.1 U : U "G
BUNTU SE
While both "-server" and "-generic" kernels are supported by the Seagate X8 Accelerator device driver, for optimal
performance, use the "-generic" version of your selected kernel version. This "generic" version handles highly threaded IO
drivers much more efficiently than the "server" version.
To see which kernel is presently installed, execute "uname -r" and check if your kernel revision ends in "-generic" or "-server."
To install the generic version of the kernel, use the command, "apt-get install linux-generic".
5.2 SUSE: E
NABLE
While the Seagate X8 Accelerator device driver is fully tested under SUSE Linux, it is not certified by Novell. By default,
SUSE will not allow such modules to be loaded, so this setting must be changed to allow the Seagate device driver to load.
Edit the file "/etc/modprobe.d/unsupported-modules" and set the value "allow_unsupported_modules" to "1" as shown below.
The device driver will be unable to load without this change.
N
OTE
vi /etc/modprobe.d/unsupported-modules
...
# Setting allow_unsupported_modules 1 enables loading of unsupported
# by modprobe, setting allow_unsupported_modules 0 disables it. This can
# be overriden using the --allow-unsupported-modules commandline switch.
allow_unsupported_modules 1
5.3 E P
NHANCE ERFORMANCE BY
To obtain maximum performance, dynamic CPU frequency scaling should be disabled. This is especially important when
measuring I/O latencies. Use the following commands to disable cpuspeed daemon in Red Hat or CentOS:
# service cpuspeed stop
# chkconfig cpuspeed off
S X8 A
EAGATE CCELERATOR
" K
ENERIC ERNELS FOR
U M
NSUPPORTED ODULES TO
D
ISABLING
U G L , R
SER UIDE FOR INUX EV
H IO P
IGHEST ERFORMANCE
A D L
LLOW RIVER
CPU T
HROTTLING
. A
OADING
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