SAS or SSD for Ubuntu 14.04 and data analysis Post: 302966478

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Special Forums Hardware SAS or SSD for Ubuntu 14.04 and data analysis Post 302966478 by jim mcnamara on Friday 12th of February 2016 10:58:34 AM

02-12-2016

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SSD is more than an order of magnitude (or much) faster than SAS high-rpm disks.
SSD is limited - usually to 1-2 TB of storage. With 128GB of memory, you could easily use SSD disks to load whatever file you want into memory - e.g., usual term is a RAMDISK. Ubuntu supports this. It also caches files very effectively without much human intervention other than configuration.

Learn about pdflush: The Linux Page Cache and pdflush

There is also vmtouch. You can force any file to be read entirely into memory. Which would definitely favor SSD.

https://hoytech.com/vmtouch/ Also note some other tools on that site.

So, I would suggest: SSD's and vmtouch (or an analagous tool.)

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ubuntu-upload-permission

ubuntu-upload-permission(1)				      General Commands Manual				       ubuntu-upload-permission(1)

NAME

       ubuntu-upload-permission - Query upload rights and (optionally) list the people and teams with upload rights for a package

SYNOPSIS

       ubuntu-upload-permission [options] package

DESCRIPTION

       ubuntu-upload-permission checks if the user has upload permissions for package.	If the --list-uploaders option is provided, all the people
       and teams that do have upload rights for package will be listed.

OPTIONS

       -r RELEASE, --release=RELEASE
	      Query permissions in RELEASE.  Default: current development release.

       -a, --list-uploaders
	      List all the people and teams who have upload rights for package.

       -t, --list-team-members
	      List all the members of every team with rights. (Implies --list-uploaders)

       -h, --help
	      Display a help message and exit

EXIT STATUS

       0      You have the necessary upload rights.

       1      You don't have the necessary upload rights.

       2      There was an error.

AUTHORS

       ubuntu-upload-permission and this manpage were written by Stefano Rivera <stefanor@ubuntu.com>.

       Both are released under the terms of the ISC License.

ubuntu-dev-tools						   November 2011				       ubuntu-upload-permission(1)