EnglishFrenchSpanish

Ad


OnWorks favicon

fs_bypassthreshold - Online in the Cloud

Run fs_bypassthreshold in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command fs_bypassthreshold that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


fs_bypassthreshold - get/set Cache Bypass file size threshold

SYNOPSIS


fs bypassthreshold [-size <file size>] [-help]

fs bypassthresh [-s <file size>] [-h]

DESCRIPTION


The fs bypassthreshold command either changes the AFS client Cache Bypass file size
threshold, or reports the current threshold. Normally, when an application tries to read
data via the OpenAFS client, the client will fetch the required data from the fileserver,
store the results in the local cache, and then serve the application request from the
local cache. When the Cache Bypass feature is enabled, certain files will be read directly
from the network, and the data will not be saved to the local cache. In some scenarios,
this can provide a significant performance improvement, especially if the data is only
read once.

Currently, the only way to specify which files should bypass the cache and which files
should not, is by file size. In the future, different mechanisms may exist for specifying
which files should bypass the local cache and which should not.

If -size is not specified, fs bypassthreshold just reports the current threshold and
exits.

CAUTIONS


Cache Bypass is still considered an experimental feature. Even in stable releases of
OpenAFS, it is not considered as stable as the rest of OpenAFS.

OPTIONS


-size <file size>
Specifies how large a file must be in order to enable Cache Bypass mode. If a file is
larger than the specified file size (in bytes), reading from that file will bypass the
local cache and be read directly from the network. A file size of -1 indicates that
Cache Bypass should be disabled complete, so no files will enable Cache Bypass mode,
no matter how large they are.

By default, Cache Bypass is disabled.

-help
Prints the online help for this command. All other valid options are ignored.

OUTPUT


The output format is identical whether or not -size was specified. If -size is specified,
the bypass threshold is changed, and the output represents the new, changed, threshold.
Otherwise the output represents the current threshold.

EXAMPLES


The following example turns on Cache Bypass with a threshold of 4KiB:

% fs bypassthreshold 4096
Cache bypass threshold 4096

The following example disables Cache Bypass:

% fs bypassthreshold -1
Cache bypass threshold -1 (disabled)

The following example examines the current Cache Bypass threshold:

% fs bypassthreshold
Cache bypass threshold 4096

PRIVILEGE REQUIRED


To set the bypass threshold, the issuer must be logged in as the local superuser "root".
Otherwise, no privilege is required.

COPYRIGHT


Copyright 2012 Sine Nomine Associates

This documentation is covered by the BSD License as written in the doc/LICENSE file. This
man page was written by Andrew Deason for OpenAFS.

Use fs_bypassthreshold online using onworks.net services


Free Servers & Workstations

Download Windows & Linux apps

  • 1
    AstrOrzPlayer
    AstrOrzPlayer
    AstrOrz Player is a free media player
    software, part based on WMP and VLC. The
    player is in a minimalist style, with
    more than ten theme colors, and can also
    b...
    Download AstrOrzPlayer
  • 2
    movistartv
    movistartv
    Kodi Movistar+ TV es un ADDON para XBMC/
    Kodi que permite disponer de un
    decodificador de los servicios IPTV de
    Movistar integrado en uno de los
    mediacenters ma...
    Download movistartv
  • 3
    Code::Blocks
    Code::Blocks
    Code::Blocks is a free, open-source,
    cross-platform C, C++ and Fortran IDE
    built to meet the most demanding needs
    of its users. It is designed to be very
    extens...
    Download Code::Blocks
  • 4
    Amidst
    Amidst
    Amidst or Advanced Minecraft Interface
    and Data/Structure Tracking is a tool to
    display an overview of a Minecraft
    world, without actually creating it. It
    can ...
    Download Amidst
  • 5
    MSYS2
    MSYS2
    MSYS2 is a collection of tools and
    libraries providing you with an
    easy-to-use environment for building,
    installing and running native Windows
    software. It con...
    Download MSYS2
  • 6
    libjpeg-turbo
    libjpeg-turbo
    libjpeg-turbo is a JPEG image codec
    that uses SIMD instructions (MMX, SSE2,
    NEON, AltiVec) to accelerate baseline
    JPEG compression and decompression on
    x86, x8...
    Download libjpeg-turbo
  • More »

Linux commands

  • 1
    abi-tracker
    abi-tracker
    abi-tracker - visualize ABI changes
    timeline of a C/C++ software library.
    DESCRIPTION: NAME: ABI Tracker
    (abi-tracker) Visualize ABI changes
    timeline of a C/C+...
    Run abi-tracker
  • 2
    abicheck
    abicheck
    abicheck - check application binaries
    for calls to private or evolving symbols
    in libraries and for static linking of
    some system libraries. ...
    Run abicheck
  • 3
    couriermlm
    couriermlm
    couriermlm - The Courier mailing list
    manager ...
    Run couriermlm
  • 4
    couriertcpd
    couriertcpd
    couriertcpd - the Courier mail server
    TCP server daemon ...
    Run couriertcpd
  • 5
    gbklatex
    gbklatex
    bg5latex - Use LaTeX directly on a Big5
    encodedtex file bg5pdflatex - Use
    pdfLaTeX directly on a Big5 encodedtex
    file bg5+latex - Use LaTeX directly on a
    Big5+...
    Run gbklatex
  • 6
    gbkpdflatex
    gbkpdflatex
    bg5latex - Use LaTeX directly on a Big5
    encodedtex file bg5pdflatex - Use
    pdfLaTeX directly on a Big5 encodedtex
    file bg5+latex - Use LaTeX directly on a
    Big5+...
    Run gbkpdflatex
  • More »

Ad