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Measurements of a distributed file system

Mary G. Baker, John H. Hartman, Michael D. Kupfer, Ken W. Shirriff, John K. Ousterhout
1991 ACM SIGOPS Operating Systems Review  
We analyzed the user-level file access patterns and caching behavior of the Sprite distributed file system. The first part of our analysis repeated a study done in 1985 of the BSD UNIX file system.  ...  Also, many more very large (multi-megabyte) files are in use today than in 1985. The second part of our analysis measured the behavior of Sprite's main-memory file caches.  ...  In this paper we repeat the analysis of the BSD study and report additional measurements of file caching in a distributed file system. Two factors motivated us to make the new measurements.  ... 
doi:10.1145/121133.121164 fatcat:cidds6ppinfgno4s5f7kkpgrbq

Measurements of a distributed file system

Mary G. Baker, John H. Hartman, Michael D. Kupfer, Ken W. Shirriff, John K. Ousterhout
1991 Proceedings of the thirteenth ACM symposium on Operating systems principles - SOSP '91  
We analyzed the user-level file access patterns and caching behavior of the Sprite distributed file system. The first part of our analysis repeated a study done in 1985 of the BSD UNIX file system.  ...  Also, many more very large (multi-megabyte) files are in use today than in 1985. The second part of our analysis measured the behavior of Sprite's main-memory file caches.  ...  In this paper we repeat the analysis of the BSD study and report additional measurements of file caching in a distributed file system. Two factors motivated us to make the new measurements.  ... 
doi:10.1145/121132.121164 dblp:conf/sosp/BakerHKSO91 fatcat:fng3lfezhrdpnhttu2x74fihzu

Feasibility of a serverless distributed file system deployed on an existing set of desktop PCs

William J. Bolosky, John R. Douceur, David Ely, Marvin Theimer
2000 Proceedings of the 2000 ACM SIGMETRICS international conference on Measurement and modeling of computer systems - SIGMETRICS '00  
We consider an architecture for a serverless distributed file system that does not assume mutual trust among the client computers.  ...  To assess the feasibility of deploying this system on an existing desktop infrastructure, we measure and analyze a large set of client machines in a commercial environment.  ...  File System Measurement We measured a set of file systems to determine the amount of disk space that is free and the amount of disk space that would be free if all duplicate files were eliminated.  ... 
doi:10.1145/339331.339345 dblp:conf/sigmetrics/BoloskyDET00 fatcat:htpqf5rqhvgvtigd5fj5bdnye4

Feasibility of a serverless distributed file system deployed on an existing set of desktop PCs

William J. Bolosky, John R. Douceur, David Ely, Marvin Theimer
2000 Performance Evaluation Review  
We consider an architecture for a serverless distributed file system that does not assume mutual trust among the client computers.  ...  To assess the feasibility of deploying this system on an existing desktop infrastructure, we measure and analyze a large set of client machines in a commercial environment.  ...  File System Measurement We measured a set of file systems to determine the amount of disk space that is free and the amount of disk space that would be free if all duplicate files were eliminated.  ... 
doi:10.1145/345063.339345 fatcat:wciixciorrgohbulq6yrodsc2i

A trusted measurement model based on dynamic policy and privacy protection in IaaS security domain

Liangming Wang, Fagui Liu
2018 EURASIP Journal on Information Security  
The model first proposed a measure architecture, where it defines the trusted measurement of the user virtual machine into the trust of files in the virtual machine and trusted network behavior.  ...  However, in the case of privacy protection, how to ensure the security of files in the user virtual machine and the user virtual machine's behavior does not affect other virtual machines; it is a major  ...  Liu Fagui is a professor in South China University of Technology, China. She received the Ph.D. degree from South China University of Technology.  ... 
doi:10.1186/s13635-018-0071-1 fatcat:nruga4ynuvbahpdvbh2bjbl2ue

Distributed PACS using distributed file system with hierarchical meta data servers

T. Hiroyasu, Y. Minamitani, M. Miki, H. Yokouchi, M. Yoshimi
2012 2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society  
At the same time, as distributed file system is utilized, accessing image files can also achieve high-speed access and high fault tolerant. The introduced system has a more significant point.  ...  This system also has the scalability of file access with along to the number of file numbers and file sizes.  ...  CONCLUSIONS AND FUTURE WORK In this paper, the concept of a new distributed PACS using distributed file system was proposed.  ... 
doi:10.1109/embc.2012.6347334 pmid:23367269 dblp:conf/embc/HiroyasuMMYY12 fatcat:5c5vcmp2obfl5emsnofk5kwanm

QA of intensity-modulated beams using dynamic MLC log files

M Dinesh Kumar, N Thirumavalavan, D Venugopal Krishna, M Babaiah
2006 Journal of Medical Physics  
Measured dose distributions agree within 4% dose difference and 4 mm DTA with Planned dose distribution. Our results show Dynalog file as a promising tool for dynamic IMRT QA.  ...  To evaluate the utility of Dynalog file information for planar dose verification in IMRT QA, a program is developed to convert Dynalog file data to DMLC field files.  ...  The detailed dosimetric comparison between planned and measured planar dose distribution is the core of IMRT QA for planning and delivery system.  ... 
doi:10.4103/0971-6203.25668 pmid:21206638 pmcid:PMC3003892 fatcat:77h6fq762jczfleunuog5ewqoi

An evaluation method for the availability of a distributed database management system

Heeseok Lee
1993 Information & Management  
Acknowledgement The author thanks the editor whose suggestions improved the presentation of this paper.  ...  This research was supported in part by the International Center for Telecommunications Management at the University of Nebraska.  ...  A distributed information system consists of several data files that are controlled and coordinated by a distributed database management system.  ... 
doi:10.1016/0378-7206(93)90016-m fatcat:wnt57wbrorhhxl67tkoisvp3ne

File size distribution on UNIX systems

Andrew S. Tanenbaum, Jorrit N. Herder, Herbert Bos
2006 ACM SIGOPS Operating Systems Review  
Knowledge of the file size distribution is needed to optimize file system design.  ...  Only by knowing the file size distribution can reasonable choices be made. In 1984, we published the file size distribution for a university computer science department.  ...  To provide some idea of what the distribution looks like for other applications, we ran the same measurements on a Linux file system being used as a Web server (for www.electoral-vote.com).  ... 
doi:10.1145/1113361.1113364 fatcat:int4sovi6jae3i662kpjypi6ha

Measurement of eDonkey activity with distributed honeypots

Oussama Allali, Matthieu Latapy, Clemence Magnien
2009 2009 IEEE International Symposium on Parallel & Distributed Processing  
We describe here a distributed platform for doing so on the eDonkey network, relying on a group of honeypot peers which claim to have certain files and log queries they receive for these files.  ...  This illustrates both the possible uses of our measurement system, and the kind of data one may collect using it.  ...  We focus here on the measurement of 1 eDonkey is a semi-distributed peer-to-peer file exchange system based on directory servers.  ... 
doi:10.1109/ipdps.2009.5160952 dblp:conf/ipps/AllaliLM09 fatcat:x2estbupfzdohjxfykg6lj6hni

File server scaling with network-attached secure disks

Garth A. Gibson, David Rochberg, Jim Zelenka, David F. Nagle, Khalil Amiri, Fay W. Chang, Eugene M. Feinberg, Howard Gobioff, Chen Lee, Berend Ozceri, Erik Riedel
1997 Proceedings of the 1997 ACM SIGMETRICS international conference on Measurement and modeling of computer systems - SIGMETRICS '97  
a bottleneck) and bandwidth for new parallel and distributed file systems (through network striping and more efficient data paths).  ...  Realizing the technology's full potential requires careful consideration across a wide range of file system, networking and security issues.  ...  The project team is indebted to generous contributions from the member companies of the Parallel Data  ... 
doi:10.1145/258612.258696 dblp:conf/sigmetrics/GibsonNACFGLORRZ97 fatcat:skghduylxjeizk6saptjlkyidi

Measurement of eDonkey Activity with Distributed Honeypots [article]

Oussama Allali LIP6
2009 arXiv   pre-print
We describe here a distributed platform for doing so on the eDonkey network, relying on a group of honeypot peers which claim to have certain files and log queries they receive for these files.  ...  This illustrates both the possible uses of our measurement system, and the kind of data one may collect using it.  ...  We focus here on the measurement of 1 eDonkey is a semi-distributed peer-to-peer file exchange system based on directory servers.  ... 
arXiv:0904.3215v1 fatcat:tski7qdhcfezpc6x2xu73njk4e

File migration in distributed computer systems

Juan M. Porcar
1983 Performance evaluation (Print)  
The File Assignment Problem The distribution of files among the storage elements of a distributed system may have a serious impact on its overall performance.  ...  When there is a great degree of cohesiveness and transparency in the operation of the computer network, it is known as a distributed computer system or a distributed system for short.  ...  Reference to a company or product name does not imply approval or recommendation of the product by the University of California or the U.S.  ... 
doi:10.1016/0166-5316(83)90019-6 fatcat:nuit3vsa4ng25lye57vob4choi

Page 5 of Hewlett-Packard Journal Vol. 26, Issue 3 [page]

1974 Hewlett-Packard Journal  
ara ore eee Satellites for Specific Applications Distributed systems are a logical extension of computer- i based measurement equipment designed for specific ap- | plications.  ...  In a distributed system, both of these limitations are removed. The central system disc file is now available for convenient loading of program and calibration data into the satellite.  ... 

LVFS: A scalable big data scientific storage system

Navid Golpayegani, Milton Halem, Edward J. Masuoka, Neal K. Devine, Gang Ye
2013 2013 IEEE International Conference on Cluster Computing (CLUSTER)  
Ahstract-LVFS is a virtual scalable file storage system developed in response to a class of scientific data systems that over time continue to collect petabytes of data that begin to seriously impact the  ...  The system has been operational in a real use case, the NASA MODIS Adaptive Processing System (MODAPS), and shown to double  ...  file system to a full scientific storage system capable of scaling to exabyte sizes.  ... 
doi:10.1109/cluster.2013.6702687 dblp:conf/cluster/GolpayeganiHMDY13 fatcat:sdlsoaphdzgz3nhvpil4tsmddq
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