Improving File Fetches in AFS

We describe two enhancements to the AFS distributed file system intended to improve the performance of large file fetches over high-speed networks. Selective caching AFS bypasses the client local disk when fetching files, which improves the performance of applications such as streaming video, for wh...

Full description

Saved in:
Bibliographic Details
Main Authors: Antonelli, Charles J, Coffman, Kevin, Rees, Jim
Format: Report
Language:English
Subjects:
AFS(ANDREW FILE SYSTEM)
ASYNCHRONOUS TRANSFER MODE
CLIENT SERVER SYSTEMS
Computer Systems
DATA STORAGE SYSTEMS
DATA TRANSMISSION SYSTEMS
INFORMATION RETRIEVAL
Telemetry
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
cited_by
cites
container_end_page
container_issue
container_start_page
container_title
container_volume
creator Antonelli, Charles J
Coffman, Kevin
Rees, Jim
description We describe two enhancements to the AFS distributed file system intended to improve the performance of large file fetches over high-speed networks. Selective caching AFS bypasses the client local disk when fetching files, which improves the performance of applications such as streaming video, for which local caching is of little benefit, and gives client processor and cache resources to applications for which local caching is an advantage. Split-path AFS augments the conventional UDP-based connection between AFS client and server with a fast path over native ATM AAL5 for file data fetches. These enhancements combine to reduce the elapsed time of large (100 MB) file fetches by 80% in our laboratory environment.
format report
fullrecord <record><control><sourceid>dtic_1RU</sourceid><recordid>TN_cdi_dtic_stinet_ADA386836</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>ADA386836</sourcerecordid><originalsourceid>FETCH-dtic_stinet_ADA3868363</originalsourceid><addsrcrecordid>eNrjZJD1zC0oyi_LzEtXcMvMSVVwSy1JzkgtVsjMU3B0C-ZhYE1LzClO5YXS3Awybq4hzh66KSWZyfHFJZl5qSXxji6OxhZmFsZmxgSkAR0mIHI</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>report</recordtype></control><display><type>report</type><title>Improving File Fetches in AFS</title><source>DTIC Technical Reports</source><creator>Antonelli, Charles J ; Coffman, Kevin ; Rees, Jim</creator><creatorcontrib>Antonelli, Charles J ; Coffman, Kevin ; Rees, Jim ; MICHIGAN UNIV ANN ARBOR CENTER FOR INFORMATION TECHNOLOGY INTEGRATION</creatorcontrib><description>We describe two enhancements to the AFS distributed file system intended to improve the performance of large file fetches over high-speed networks. Selective caching AFS bypasses the client local disk when fetching files, which improves the performance of applications such as streaming video, for which local caching is of little benefit, and gives client processor and cache resources to applications for which local caching is an advantage. Split-path AFS augments the conventional UDP-based connection between AFS client and server with a fast path over native ATM AAL5 for file data fetches. These enhancements combine to reduce the elapsed time of large (100 MB) file fetches by 80% in our laboratory environment.</description><language>eng</language><subject>AFS(ANDREW FILE SYSTEM) ; ASYNCHRONOUS TRANSFER MODE ; CLIENT SERVER SYSTEMS ; Computer Systems ; DATA STORAGE SYSTEMS ; DATA TRANSMISSION SYSTEMS ; INFORMATION RETRIEVAL ; Telemetry</subject><creationdate>2001</creationdate><rights>APPROVED FOR PUBLIC RELEASE</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,776,881,27544,27545</link.rule.ids><linktorsrc>$$Uhttps://apps.dtic.mil/sti/citations/ADA386836$$EView_record_in_DTIC$$FView_record_in_$$GDTIC$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Antonelli, Charles J</creatorcontrib><creatorcontrib>Coffman, Kevin</creatorcontrib><creatorcontrib>Rees, Jim</creatorcontrib><creatorcontrib>MICHIGAN UNIV ANN ARBOR CENTER FOR INFORMATION TECHNOLOGY INTEGRATION</creatorcontrib><title>Improving File Fetches in AFS</title><description>We describe two enhancements to the AFS distributed file system intended to improve the performance of large file fetches over high-speed networks. Selective caching AFS bypasses the client local disk when fetching files, which improves the performance of applications such as streaming video, for which local caching is of little benefit, and gives client processor and cache resources to applications for which local caching is an advantage. Split-path AFS augments the conventional UDP-based connection between AFS client and server with a fast path over native ATM AAL5 for file data fetches. These enhancements combine to reduce the elapsed time of large (100 MB) file fetches by 80% in our laboratory environment.</description><subject>AFS(ANDREW FILE SYSTEM)</subject><subject>ASYNCHRONOUS TRANSFER MODE</subject><subject>CLIENT SERVER SYSTEMS</subject><subject>Computer Systems</subject><subject>DATA STORAGE SYSTEMS</subject><subject>DATA TRANSMISSION SYSTEMS</subject><subject>INFORMATION RETRIEVAL</subject><subject>Telemetry</subject><fulltext>true</fulltext><rsrctype>report</rsrctype><creationdate>2001</creationdate><recordtype>report</recordtype><sourceid>1RU</sourceid><recordid>eNrjZJD1zC0oyi_LzEtXcMvMSVVwSy1JzkgtVsjMU3B0C-ZhYE1LzClO5YXS3Awybq4hzh66KSWZyfHFJZl5qSXxji6OxhZmFsZmxgSkAR0mIHI</recordid><startdate>20010212</startdate><enddate>20010212</enddate><creator>Antonelli, Charles J</creator><creator>Coffman, Kevin</creator><creator>Rees, Jim</creator><scope>1RU</scope><scope>BHM</scope></search><sort><creationdate>20010212</creationdate><title>Improving File Fetches in AFS</title><author>Antonelli, Charles J ; Coffman, Kevin ; Rees, Jim</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-dtic_stinet_ADA3868363</frbrgroupid><rsrctype>reports</rsrctype><prefilter>reports</prefilter><language>eng</language><creationdate>2001</creationdate><topic>AFS(ANDREW FILE SYSTEM)</topic><topic>ASYNCHRONOUS TRANSFER MODE</topic><topic>CLIENT SERVER SYSTEMS</topic><topic>Computer Systems</topic><topic>DATA STORAGE SYSTEMS</topic><topic>DATA TRANSMISSION SYSTEMS</topic><topic>INFORMATION RETRIEVAL</topic><topic>Telemetry</topic><toplevel>online_resources</toplevel><creatorcontrib>Antonelli, Charles J</creatorcontrib><creatorcontrib>Coffman, Kevin</creatorcontrib><creatorcontrib>Rees, Jim</creatorcontrib><creatorcontrib>MICHIGAN UNIV ANN ARBOR CENTER FOR INFORMATION TECHNOLOGY INTEGRATION</creatorcontrib><collection>DTIC Technical Reports</collection><collection>DTIC STINET</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Antonelli, Charles J</au><au>Coffman, Kevin</au><au>Rees, Jim</au><aucorp>MICHIGAN UNIV ANN ARBOR CENTER FOR INFORMATION TECHNOLOGY INTEGRATION</aucorp><format>book</format><genre>unknown</genre><ristype>RPRT</ristype><btitle>Improving File Fetches in AFS</btitle><date>2001-02-12</date><risdate>2001</risdate><abstract>We describe two enhancements to the AFS distributed file system intended to improve the performance of large file fetches over high-speed networks. Selective caching AFS bypasses the client local disk when fetching files, which improves the performance of applications such as streaming video, for which local caching is of little benefit, and gives client processor and cache resources to applications for which local caching is an advantage. Split-path AFS augments the conventional UDP-based connection between AFS client and server with a fast path over native ATM AAL5 for file data fetches. These enhancements combine to reduce the elapsed time of large (100 MB) file fetches by 80% in our laboratory environment.</abstract><oa>free_for_read</oa></addata></record>
fulltext fulltext_linktorsrc
identifier
ispartof
issn
language eng
recordid cdi_dtic_stinet_ADA386836
source DTIC Technical Reports
subjects AFS(ANDREW FILE SYSTEM)
ASYNCHRONOUS TRANSFER MODE
CLIENT SERVER SYSTEMS
Computer Systems
DATA STORAGE SYSTEMS
DATA TRANSMISSION SYSTEMS
INFORMATION RETRIEVAL
Telemetry
title Improving File Fetches in AFS
url http://sfxeu10.hosted.exlibrisgroup.com/loughborough?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-30T00%3A00%3A51IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-dtic_1RU&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=unknown&rft.btitle=Improving%20File%20Fetches%20in%20AFS&rft.au=Antonelli,%20Charles%20J&rft.aucorp=MICHIGAN%20UNIV%20ANN%20ARBOR%20CENTER%20FOR%20INFORMATION%20TECHNOLOGY%20INTEGRATION&rft.date=2001-02-12&rft_id=info:doi/&rft_dat=%3Cdtic_1RU%3EADA386836%3C/dtic_1RU%3E%3Cgrp_id%3Ecdi_FETCH-dtic_stinet_ADA3868363%3C/grp_id%3E%3Coa%3E%3C/oa%3E%3Curl%3E%3C/url%3E&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true