Ousterhout PowerPoint PPT Presentations

Transfer rate is about 100 MB/s. Log-structured file systems based on assumptions: ... Sun-4/260, 32 MB RAM; Wren IV (1.3 MB/s, 17.5 ms average seek) No cleaning. ...

In Search of an Understandable Consensus Algorithm Diego Ongaro John Ousterhout Stanford University Handling slow followers , Leader reissues the AppendEntry RPC ...

Title: Why Threads Are A Bad Idea Author: John Ousterhout Description: Comparison of threads and events, why events are better. Last modified by

Developed in late 1980s by John Ousterhout at UC Berkeley ... 3. Tcl enhanced at Sun Microsystems: Windows, Macintosh ports. Web/Internet support ...

... is an open-source scripting language created by John Ousterhout in 1988. ... option 'foo': must be close, create, current, destroy, eval, exists, list, open, ...

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... they are going, give advice, give a talk that features ... Builds team spirit, advice on direction, change course. Offers milestones for project stages ...

Second of four talks in all-day Tcl/Tk tutorial. Discusses how to write scripts in Tcl; ignores Tk and Tcl C interfaces.

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Source kept free. Many improvements. Scriptics TCL Core Team. Syntax ... No static typing. variable can contain integers, floats, strings, lists or whatever ...

SEDCL: Stanford Experimental Data Center Laboratory Tackle Data Center Scaling Challenges with Stanford s research depth and breadth ...

In depth, dynamic filtering and highlighting options ... Highlighting of specific games by selecting data points in parallel coord or graphs. ...

Department of Computer Science. Southern Illinois University Edwardsville ... The elapsed time between the end of an inquiry on ...

Title: ICS 143 - Introduction to Operating Systems Author: Information and Computer Science Dept. Last modified by: nalini Created Date: 1/3/1999 9:19:15 PM

cluster of 20 PCs hosting 364 3.5' IBM disks (8.4 GB) in 7 19'x 33' x 84' racks, or 3 TB. ... defined using SQL-like declarative language ...

Shell programming, AWK, Tcl/Tk, Perl. Scripts used to combine components ... 1978 'sh' shell is developed for Unix. 1987 Perl is ... CGI scripts for Web sites ...

Direct Impact: PPL = fast serial lines = Silicon Image ... No single points of failure, redundancy everywhere. Create AME benchmarks to measure progress ...

Scripting languages originated as job control languages ... Scripting languages got increasingly more ... Gluing applications. 3. System Programming Languages ...

Scripting languages originated as job control languages ... It is available on virtually every computer platform, from Apple Macintosh to VMS. ...

ICS 143 - Principles of Operating Systems Lecture 1 - Introduction and Overview T,Th 3:30 - 4:50 p.m. Prof. Nalini Venkatasubramanian ( nalini@ics.uci.edu )

Leroy Mahaney June 1. Gary Wolfe September 2. Jimmy Jadloski November 23. 1998 ... Walter Fargo September 15. William Parker February 7. Richard Shutt March 1 ...

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Presents a new file system architecture allowing mostly ... Unix file systems typically can use only 5-10% 11/8/09. 28. Crash recovery (I) Uses checkpoints ...

Grew up in OS world (processes). Evolved into user-level tool. ... Fork off subprocesses for long-running things (e.g. multimedia), use events to ...

in Workstation and PC Clusters Hank Levy Dept. of Computer Science and Engineering University of Washington

Dynamic Linked Stacks ... Solution: Dynamic stack allocation with linked ... Each node is a call site annotated with the maximum stack space for that call. ...

All values translated to the same type. Note that expr knows about types, not Tcl! ... Global variable errorCode holds machine-readable information about errors (e.g. ...

Why threads are a bad idea (for most purposes) ... Atul Adya, Jon Howell, Marvin Theimer, William J. Bolosky, John R. Douceur. USENIX '02 ...

Systems Programming & Scripting Hans-Wolfgang Loidl hwloidl@macs.hw.ac.uk Lecture 1: Course Overview

Python Tutorial 1 Yu-Tsao Hsing Laboratory for Reliable Computing Department of Electrical Engineering National Tsing Hua University Hsinchu, Taiwan

Assuming constant work model, large jobs only block the machine for a short time ... Modeling Correlation. Divide range of one attribute into sub-ranges ...

Question: How many processes will be created by running the following code? ... Outtakes. Processes that just share code but do not communicate. Wasteful to duplicate ...

Date: Thu, 08 ... Last-Modified: Mon, 14 Nov 2005 21:07:07 GMT. ETag: '12c7ace-1475-4378fc7b' ... Similar in spirit to mod_deflate. Prerequisites. HTTP/1.1 ...

3.9B average daily pageviews. July 2006. 5. This talk is about yapache ... The document has moved A HREF='http://astrology.yahoo.com/astrology/' here /A . P ...

Programmation Internet et Intranet S. Fr not INSA Lyon 1998 stephf@lisiflory.insa-lyon.fr http://lisisun1/~sfrenot/cours/

Title: PowerPoint Presentation Author: yahoo yahoo Last modified by: yahoo yahoo Created Date: 11/30/2005 1:25:25 AM Document presentation format

... Auto-create some code Macromedia Director + LINGO ... the decoupling of programming from design Interface Mockup Tools Develop a quick sketch of GUI Early ...

ActiveState provides multi-language, cross-platform software & services ... Our IDEs. Active distributions. ASPN. July 2002. 8.0 Aug. History of Tcl. 1988. 1989. 1990 ...

2 National Medals of Science. 3 ACM Turing Awards ('Nobel Prize' of CS) 3 IEEE Medals of Honor ('Nobel Prize' of EE) 7 Members of National Academy of Sciences ...

... will there ever, exist a programming language in which it is the ... Programming ... developed for Tcl (now also supported in Python and Perl.) Conclusion ...

Message Passing Machines - iPSC/860, CM-5. Heterogeneous Networks ... One declares a write to ... Object Replica Has Version Number. Object Queue Maintains ...

'Programming productivity may be increased as much as five times when a suitable ... Commands separated by newlines, semi-colons. Tcl command ...

'In its purest form, a thread represents as little as possible: it is an ... VAX, Encore and Sequent machines with CMU. THREADS. Mach thread results ...

Advice on Programming Sept. 4, 2003

Guru Parulkar, Executive Director, Clean Slate Internet Design ... Blueprint of Future Internet? Backbone (Lightflow) Prog Open. Mobile Internet (POMI) 2020 ...

We'll not teach you distributed systems textbooks. We'll learn to engineer realworld complex systems ... Microreboot -- A Technique for Cheap Recovery. Proc. ...

onchange= Content of a field changes (validation) onselect= Text is selected. onmouseover= Mouse moves over a link (animated buttons) ...

... back until well after the file is closed. File sharing rare ... Concurrent Write Sharing Details. Server detects a file about to become concurrent write shared ...

Create shell scripts using basic shell programming features ... You should not directly edit a crontab file in the /var/spool/cron directory ...

ActiveState provides multi-language, cross-platform software ... Fr d ric Bonnet. George Smith. Jeff Hobbs. Todd Helfter. Peter Spjuth. Allen Flick. Mo DeJong ...

Advanced Operating Systems Lecture 2: Design principles University of Tehran Dept. of EE and Computer Engineering By: Dr. Nasser Yazdani Univ. of Tehran

Build specialized crawler, crawl over 17 million URLs from different starting ... Media Crawler. Modify Larbin Web crawler. Recursively traverses URLs ...

Review Tcl syntax from last week. Expressions. Lists. Strings and pattern matching ... red fish blue fish = list. red $fish blue $fish = not a list, but ...

Intuition: Avg. time disk is busy for writing new data. Definition. includes cleaning ... Intuition: Free space in 'cold' (more stable) segments more valuable ...

... 'hello') 5 # size 'hello' 'jello' 1 # comparison 'e' in 'hello' 1 ... 'name':'Guido', 'age':43, ('hello','world'):1, 42:'yes', 'flag': ['red','white','blue' ...

'name':'Guido', 'age':43, ('hello','world'):1, 42:'yes', 'flag': ['red' ... Extended print: print sys.stderr, 'Hello!' Extended import: import foo as bar ...