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Date: Mon, 11 Nov 1996 17:32:15 GMTServer: NCSA/1.5Content-type: text/htmlLast-modified: Thu, 25 Jan 1996 08:02:16 GMTContent-length: 2384<html><head><title> CS 736 Assignment #1 (Spring 96)</title></head><BODY><h1> CS 736 Assignment #1 (Spring 96)</h1><h2>Here is an informal description of assignment #1.</h2><b>Step 1:</b> <br>Download lmbench from <a href ="cs736-lmbench.tar.Z">here</a>; <br>Unpack it, /bin/sh each part;<br>Build the benchmark and run it, get results; <p><b>Step 2:</b> <br>Read the benchmark source and documents;<p><b>Step 3:</b> <br>Build and run lmbench on a different operating system;<p><b>Step 4:</b> <br>Write your own routine measuring the following:<br><ol><li>How long does it take to do an integer add op? (doesn't have to be complicated; you can ignore pipeline or other hardware details.)<li>How long does a null procedure call take? Vary the number of arguments passed;<li>Measure system call latency using three different system calls other than write;<li>Measure context switch overhead using semaphores, instead of pipes;<li>Measure signal handling cost (hint. you can use mprotect);<li>Measure page fault handling cost for zero-filled pages, instead of mmaped pages;<li>Measure file open/close, creation/deletion latency in directories containing 16, 64, 256 and 1024 files, on local file systems and AFS or NFS file systems;<li>Measure the latency of file read/write using different approaches:<br> . UNIX read/write system call;<br> . stream io library (i.e. stdio);<br> . mmap;<br> Vary the size of each read/write.<li>Write a simulator for memory server using TCP/IP and UDP/IP, in which the the client send a request asking for certain buffer page, and the server respond by sending out a page. Measure the latency of such operations, for page sizes of 4K, 8K and 32K bytes.<li>With two or more clients simultaneously asking for service from the simulated memory server, measure the average response time of page requests.</ol><b>Step 5:</b><br>Read the log-structured file system paper (Rosenblum & Ousterhout), section 5.1, reproduce the microbenchmark results on Sun OS.<p><br>Bonus points:</b><br>Measure anythings that interests you, and report your results.<p><br><b>What to submit:</b>A brief description of what you measured, and how you did it;<br>A list of your results; use graphs when appropriate;<br>The benchmark routines, with a Makefile showing how to build and run them.<br><p></body>⌨️ 快捷键说明
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