Simulate Storage Post: 302840495

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Tool to simulate non-sequential disk I/O (simulate db file sequential read) in C POSIX

Writing a Tool to simulate non-sequential disk I/O (simulate db file sequential read) in C POSIX I have over the years come across the same issue a couple of times, and it normally is that the read speed on SAN is absolutely atrocious when doing non-sequential I/O to the disks. Problem being of...

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polygraph-pop-test

POLYGRAPH-POP-TEST(1)						   User Commands					     POLYGRAPH-POP-TEST(1)

NAME

       polygraph-pop-test - predicts cache hit ratios for a given workload

SYNOPSIS

       pop-test [--option ...]

OPTIONS

       --help list of options

       --version
	      package version info

       --out <file>
	      redirect console output

       --cachable <%>
	      portion of cachable replies

       --public_interest <%>
	      portion of URLs shared among all robots

       --recurrence <%>
	      probability of a re-visit to a URL

       --work_set_size <size>
	      working set size

       --cache_size <size>
	      cache size

       --obj_size <size>
	      average object size

       --robots <int>
	      total number of robots to simulate

       --pop_model <str>
	      popularity model

       --sim_length <int>
	      total number of request to simulate

COPYRIGHT

       Copyright (C) 2003-2006 The Measurement Factory, Inc.

SEE ALSO

       polygraph(7) - general information and a list of programs

       http://www.web-polygraph.org/ - project web site

polygraph-pop-test - Web Polygraph				   February 2010					     POLYGRAPH-POP-TEST(1)

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1. Programming

Tool to simulate non-sequential disk I/O (simulate db file sequential read) in C POSIX

Discussion started by: vrghost

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polygraph-pop-test